diff options
Diffstat (limited to 'boehm-gc/include')
| -rw-r--r-- | boehm-gc/include/backptr.h | 56 | ||||
| -rw-r--r-- | boehm-gc/include/cord.h | 327 | ||||
| -rw-r--r-- | boehm-gc/include/ec.h | 70 | ||||
| -rw-r--r-- | boehm-gc/include/gc.h | 766 | ||||
| -rw-r--r-- | boehm-gc/include/gc_alloc.h | 380 | ||||
| -rw-r--r-- | boehm-gc/include/gc_copy_descr.h | 26 | ||||
| -rw-r--r-- | boehm-gc/include/gc_cpp.h | 290 | ||||
| -rw-r--r-- | boehm-gc/include/gc_inl.h | 103 | ||||
| -rw-r--r-- | boehm-gc/include/gc_inline.h | 1 | ||||
| -rw-r--r-- | boehm-gc/include/gc_nursery.h | 90 | ||||
| -rw-r--r-- | boehm-gc/include/gc_typed.h | 91 | ||||
| -rw-r--r-- | boehm-gc/include/javaxfc.h | 41 | ||||
| -rw-r--r-- | boehm-gc/include/leak_detector.h | 7 | ||||
| -rw-r--r-- | boehm-gc/include/new_gc_alloc.h | 452 | ||||
| -rw-r--r-- | boehm-gc/include/private/config.h | 965 | ||||
| -rw-r--r-- | boehm-gc/include/private/cord_pos.h | 118 | ||||
| -rw-r--r-- | boehm-gc/include/private/gc_hdrs.h | 135 | ||||
| -rw-r--r-- | boehm-gc/include/private/gc_priv.h | 1820 | ||||
| -rw-r--r-- | boehm-gc/include/private/gcconfig.h | 1099 | ||||
| -rw-r--r-- | boehm-gc/include/weakpointer.h | 221 |
20 files changed, 0 insertions, 7058 deletions
diff --git a/boehm-gc/include/backptr.h b/boehm-gc/include/backptr.h deleted file mode 100644 index d34224e42ce..00000000000 --- a/boehm-gc/include/backptr.h +++ /dev/null @@ -1,56 +0,0 @@ -/* - * This is a simple API to implement pointer back tracing, i.e. - * to answer questions such as "who is pointing to this" or - * "why is this object being retained by the collector" - * - * This API assumes that we have an ANSI C compiler. - * - * Most of these calls yield useful information on only after - * a garbage collection. Usually the client will first force - * a full collection and then gather information, preferably - * before much intervening allocation. - * - * The implementation of the interface is only about 99.9999% - * correct. It is intended to be good enough for profiling, - * but is not intended to be used with production code. - * - * Results are likely to be much more useful if all allocation is - * accomplished through the debugging allocators. - * - * The implementation idea is due to A. Demers. - */ - -/* Store information about the object referencing dest in *base_p */ -/* and *offset_p. */ -/* If multiple objects or roots point to dest, the one reported */ -/* will be the last on used by the garbage collector to trace the */ -/* object. */ -/* source is root ==> *base_p = address, *offset_p = 0 */ -/* source is heap object ==> *base_p != 0, *offset_p = offset */ -/* Returns 1 on success, 0 if source couldn't be determined. */ -/* Dest can be any address within a heap object. */ -typedef enum { GC_UNREFERENCED, /* No refence info available. */ - GC_NO_SPACE, /* Dest not allocated with debug alloc */ - GC_REFD_FROM_ROOT, /* Referenced directly by root *base_p */ - GC_REFD_FROM_HEAP, /* Referenced from another heap obj. */ - GC_FINALIZER_REFD /* Finalizable and hence accessible. */ -} GC_ref_kind; - -GC_ref_kind GC_get_back_ptr_info(void *dest, void **base_p, size_t *offset_p); - -/* Generate a random heap address. */ -/* The resulting address is in the heap, but */ -/* not necessarily inside a valid object. */ -void * GC_generate_random_heap_address(void); - -/* Generate a random address inside a valid marked heap object. */ -void * GC_generate_random_valid_address(void); - -/* Force a garbage collection and generate a backtrace from a */ -/* random heap address. */ -/* This uses the GC logging mechanism (GC_printf) to produce */ -/* output. It can often be called from a debugger. The */ -/* source in dbg_mlc.c also serves as a sample client. */ -void GC_generate_random_backtrace(void); - - diff --git a/boehm-gc/include/cord.h b/boehm-gc/include/cord.h deleted file mode 100644 index 584112fd181..00000000000 --- a/boehm-gc/include/cord.h +++ /dev/null @@ -1,327 +0,0 @@ -/* - * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - * - * Author: Hans-J. Boehm (boehm@parc.xerox.com) - */ -/* Boehm, October 5, 1995 4:20 pm PDT */ - -/* - * Cords are immutable character strings. A number of operations - * on long cords are much more efficient than their strings.h counterpart. - * In particular, concatenation takes constant time independent of the length - * of the arguments. (Cords are represented as trees, with internal - * nodes representing concatenation and leaves consisting of either C - * strings or a functional description of the string.) - * - * The following are reasonable applications of cords. They would perform - * unacceptably if C strings were used: - * - A compiler that produces assembly language output by repeatedly - * concatenating instructions onto a cord representing the output file. - * - A text editor that converts the input file to a cord, and then - * performs editing operations by producing a new cord representing - * the file after echa character change (and keeping the old ones in an - * edit history) - * - * For optimal performance, cords should be built by - * concatenating short sections. - * This interface is designed for maximum compatibility with C strings. - * ASCII NUL characters may be embedded in cords using CORD_from_fn. - * This is handled correctly, but CORD_to_char_star will produce a string - * with embedded NULs when given such a cord. - * - * This interface is fairly big, largely for performance reasons. - * The most basic constants and functions: - * - * CORD - the type fo a cord; - * CORD_EMPTY - empty cord; - * CORD_len(cord) - length of a cord; - * CORD_cat(cord1,cord2) - concatenation of two cords; - * CORD_substr(cord, start, len) - substring (or subcord); - * CORD_pos i; CORD_FOR(i, cord) { ... CORD_pos_fetch(i) ... } - - * examine each character in a cord. CORD_pos_fetch(i) is the char. - * CORD_fetch(int i) - Retrieve i'th character (slowly). - * CORD_cmp(cord1, cord2) - compare two cords. - * CORD_from_file(FILE * f) - turn a read-only file into a cord. - * CORD_to_char_star(cord) - convert to C string. - * (Non-NULL C constant strings are cords.) - * CORD_printf (etc.) - cord version of printf. Use %r for cords. - */ -# ifndef CORD_H - -# define CORD_H -# include <stddef.h> -# include <stdio.h> -/* Cords have type const char *. This is cheating quite a bit, and not */ -/* 100% portable. But it means that nonempty character string */ -/* constants may be used as cords directly, provided the string is */ -/* never modified in place. The empty cord is represented by, and */ -/* can be written as, 0. */ - -typedef const char * CORD; - -/* An empty cord is always represented as nil */ -# define CORD_EMPTY 0 - -/* Is a nonempty cord represented as a C string? */ -#define CORD_IS_STRING(s) (*(s) != '\0') - -/* Concatenate two cords. If the arguments are C strings, they may */ -/* not be subsequently altered. */ -CORD CORD_cat(CORD x, CORD y); - -/* Concatenate a cord and a C string with known length. Except for the */ -/* empty string case, this is a special case of CORD_cat. Since the */ -/* length is known, it can be faster. */ -/* The string y is shared with the resulting CORD. Hence it should */ -/* not be altered by the caller. */ -CORD CORD_cat_char_star(CORD x, const char * y, size_t leny); - -/* Compute the length of a cord */ -size_t CORD_len(CORD x); - -/* Cords may be represented by functions defining the ith character */ -typedef char (* CORD_fn)(size_t i, void * client_data); - -/* Turn a functional description into a cord. */ -CORD CORD_from_fn(CORD_fn fn, void * client_data, size_t len); - -/* Return the substring (subcord really) of x with length at most n, */ -/* starting at position i. (The initial character has position 0.) */ -CORD CORD_substr(CORD x, size_t i, size_t n); - -/* Return the argument, but rebalanced to allow more efficient */ -/* character retrieval, substring operations, and comparisons. */ -/* This is useful only for cords that were built using repeated */ -/* concatenation. Guarantees log time access to the result, unless */ -/* x was obtained through a large number of repeated substring ops */ -/* or the embedded functional descriptions take longer to evaluate. */ -/* May reallocate significant parts of the cord. The argument is not */ -/* modified; only the result is balanced. */ -CORD CORD_balance(CORD x); - -/* The following traverse a cord by applying a function to each */ -/* character. This is occasionally appropriate, especially where */ -/* speed is crucial. But, since C doesn't have nested functions, */ -/* clients of this sort of traversal are clumsy to write. Consider */ -/* the functions that operate on cord positions instead. */ - -/* Function to iteratively apply to individual characters in cord. */ -typedef int (* CORD_iter_fn)(char c, void * client_data); - -/* Function to apply to substrings of a cord. Each substring is a */ -/* a C character string, not a general cord. */ -typedef int (* CORD_batched_iter_fn)(const char * s, void * client_data); -# define CORD_NO_FN ((CORD_batched_iter_fn)0) - -/* Apply f1 to each character in the cord, in ascending order, */ -/* starting at position i. If */ -/* f2 is not CORD_NO_FN, then multiple calls to f1 may be replaced by */ -/* a single call to f2. The parameter f2 is provided only to allow */ -/* some optimization by the client. This terminates when the right */ -/* end of this string is reached, or when f1 or f2 return != 0. In the */ -/* latter case CORD_iter returns != 0. Otherwise it returns 0. */ -/* The specified value of i must be < CORD_len(x). */ -int CORD_iter5(CORD x, size_t i, CORD_iter_fn f1, - CORD_batched_iter_fn f2, void * client_data); - -/* A simpler version that starts at 0, and without f2: */ -int CORD_iter(CORD x, CORD_iter_fn f1, void * client_data); -# define CORD_iter(x, f1, cd) CORD_iter5(x, 0, f1, CORD_NO_FN, cd) - -/* Similar to CORD_iter5, but end-to-beginning. No provisions for */ -/* CORD_batched_iter_fn. */ -int CORD_riter4(CORD x, size_t i, CORD_iter_fn f1, void * client_data); - -/* A simpler version that starts at the end: */ -int CORD_riter(CORD x, CORD_iter_fn f1, void * client_data); - -/* Functions that operate on cord positions. The easy way to traverse */ -/* cords. A cord position is logically a pair consisting of a cord */ -/* and an index into that cord. But it is much faster to retrieve a */ -/* charcter based on a position than on an index. Unfortunately, */ -/* positions are big (order of a few 100 bytes), so allocate them with */ -/* caution. */ -/* Things in cord_pos.h should be treated as opaque, except as */ -/* described below. Also note that */ -/* CORD_pos_fetch, CORD_next and CORD_prev have both macro and function */ -/* definitions. The former may evaluate their argument more than once. */ -# include "private/cord_pos.h" - -/* - Visible definitions from above: - - typedef <OPAQUE but fairly big> CORD_pos[1]; - - * Extract the cord from a position: - CORD CORD_pos_to_cord(CORD_pos p); - - * Extract the current index from a position: - size_t CORD_pos_to_index(CORD_pos p); - - * Fetch the character located at the given position: - char CORD_pos_fetch(CORD_pos p); - - * Initialize the position to refer to the given cord and index. - * Note that this is the most expensive function on positions: - void CORD_set_pos(CORD_pos p, CORD x, size_t i); - - * Advance the position to the next character. - * P must be initialized and valid. - * Invalidates p if past end: - void CORD_next(CORD_pos p); - - * Move the position to the preceding character. - * P must be initialized and valid. - * Invalidates p if past beginning: - void CORD_prev(CORD_pos p); - - * Is the position valid, i.e. inside the cord? - int CORD_pos_valid(CORD_pos p); -*/ -# define CORD_FOR(pos, cord) \ - for (CORD_set_pos(pos, cord, 0); CORD_pos_valid(pos); CORD_next(pos)) - - -/* An out of memory handler to call. May be supplied by client. */ -/* Must not return. */ -extern void (* CORD_oom_fn)(void); - -/* Dump the representation of x to stdout in an implementation defined */ -/* manner. Intended for debugging only. */ -void CORD_dump(CORD x); - -/* The following could easily be implemented by the client. They are */ -/* provided in cordxtra.c for convenience. */ - -/* Concatenate a character to the end of a cord. */ -CORD CORD_cat_char(CORD x, char c); - -/* Concatenate n cords. */ -CORD CORD_catn(int n, /* CORD */ ...); - -/* Return the character in CORD_substr(x, i, 1) */ -char CORD_fetch(CORD x, size_t i); - -/* Return < 0, 0, or > 0, depending on whether x < y, x = y, x > y */ -int CORD_cmp(CORD x, CORD y); - -/* A generalization that takes both starting positions for the */ -/* comparison, and a limit on the number of characters to be compared. */ -int CORD_ncmp(CORD x, size_t x_start, CORD y, size_t y_start, size_t len); - -/* Find the first occurrence of s in x at position start or later. */ -/* Return the position of the first character of s in x, or */ -/* CORD_NOT_FOUND if there is none. */ -size_t CORD_str(CORD x, size_t start, CORD s); - -/* Return a cord consisting of i copies of (possibly NUL) c. Dangerous */ -/* in conjunction with CORD_to_char_star. */ -/* The resulting representation takes constant space, independent of i. */ -CORD CORD_chars(char c, size_t i); -# define CORD_nul(i) CORD_chars('\0', (i)) - -/* Turn a file into cord. The file must be seekable. Its contents */ -/* must remain constant. The file may be accessed as an immediate */ -/* result of this call and/or as a result of subsequent accesses to */ -/* the cord. Short files are likely to be immediately read, but */ -/* long files are likely to be read on demand, possibly relying on */ -/* stdio for buffering. */ -/* We must have exclusive access to the descriptor f, i.e. we may */ -/* read it at any time, and expect the file pointer to be */ -/* where we left it. Normally this should be invoked as */ -/* CORD_from_file(fopen(...)) */ -/* CORD_from_file arranges to close the file descriptor when it is no */ -/* longer needed (e.g. when the result becomes inaccessible). */ -/* The file f must be such that ftell reflects the actual character */ -/* position in the file, i.e. the number of characters that can be */ -/* or were read with fread. On UNIX systems this is always true. On */ -/* MS Windows systems, f must be opened in binary mode. */ -CORD CORD_from_file(FILE * f); - -/* Equivalent to the above, except that the entire file will be read */ -/* and the file pointer will be closed immediately. */ -/* The binary mode restriction from above does not apply. */ -CORD CORD_from_file_eager(FILE * f); - -/* Equivalent to the above, except that the file will be read on demand.*/ -/* The binary mode restriction applies. */ -CORD CORD_from_file_lazy(FILE * f); - -/* Turn a cord into a C string. The result shares no structure with */ -/* x, and is thus modifiable. */ -char * CORD_to_char_star(CORD x); - -/* Turn a C string into a CORD. The C string is copied, and so may */ -/* subsequently be modified. */ -CORD CORD_from_char_star(const char *s); - -/* Identical to the above, but the result may share structure with */ -/* the argument and is thus not modifiable. */ -const char * CORD_to_const_char_star(CORD x); - -/* Write a cord to a file, starting at the current position. No */ -/* trailing NULs are newlines are added. */ -/* Returns EOF if a write error occurs, 1 otherwise. */ -int CORD_put(CORD x, FILE * f); - -/* "Not found" result for the following two functions. */ -# define CORD_NOT_FOUND ((size_t)(-1)) - -/* A vague analog of strchr. Returns the position (an integer, not */ -/* a pointer) of the first occurrence of (char) c inside x at position */ -/* i or later. The value i must be < CORD_len(x). */ -size_t CORD_chr(CORD x, size_t i, int c); - -/* A vague analog of strrchr. Returns index of the last occurrence */ -/* of (char) c inside x at position i or earlier. The value i */ -/* must be < CORD_len(x). */ -size_t CORD_rchr(CORD x, size_t i, int c); - - -/* The following are also not primitive, but are implemented in */ -/* cordprnt.c. They provide functionality similar to the ANSI C */ -/* functions with corresponding names, but with the following */ -/* additions and changes: */ -/* 1. A %r conversion specification specifies a CORD argument. Field */ -/* width, precision, etc. have the same semantics as for %s. */ -/* (Note that %c,%C, and %S were already taken.) */ -/* 2. The format string is represented as a CORD. */ -/* 3. CORD_sprintf and CORD_vsprintf assign the result through the 1st */ /* argument. Unlike their ANSI C versions, there is no need to guess */ -/* the correct buffer size. */ -/* 4. Most of the conversions are implement through the native */ -/* vsprintf. Hence they are usually no faster, and */ -/* idiosyncracies of the native printf are preserved. However, */ -/* CORD arguments to CORD_sprintf and CORD_vsprintf are NOT copied; */ -/* the result shares the original structure. This may make them */ -/* very efficient in some unusual applications. */ -/* The format string is copied. */ -/* All functions return the number of characters generated or -1 on */ -/* error. This complies with the ANSI standard, but is inconsistent */ -/* with some older implementations of sprintf. */ - -/* The implementation of these is probably less portable than the rest */ -/* of this package. */ - -#ifndef CORD_NO_IO - -#include <stdarg.h> - -int CORD_sprintf(CORD * out, CORD format, ...); -int CORD_vsprintf(CORD * out, CORD format, va_list args); -int CORD_fprintf(FILE * f, CORD format, ...); -int CORD_vfprintf(FILE * f, CORD format, va_list args); -int CORD_printf(CORD format, ...); -int CORD_vprintf(CORD format, va_list args); - -#endif /* CORD_NO_IO */ - -# endif /* CORD_H */ diff --git a/boehm-gc/include/ec.h b/boehm-gc/include/ec.h deleted file mode 100644 index c829b83ad11..00000000000 --- a/boehm-gc/include/ec.h +++ /dev/null @@ -1,70 +0,0 @@ -# ifndef EC_H -# define EC_H - -# ifndef CORD_H -# include "cord.h" -# endif - -/* Extensible cords are strings that may be destructively appended to. */ -/* They allow fast construction of cords from characters that are */ -/* being read from a stream. */ -/* - * A client might look like: - * - * { - * CORD_ec x; - * CORD result; - * char c; - * FILE *f; - * - * ... - * CORD_ec_init(x); - * while(...) { - * c = getc(f); - * ... - * CORD_ec_append(x, c); - * } - * result = CORD_balance(CORD_ec_to_cord(x)); - * - * If a C string is desired as the final result, the call to CORD_balance - * may be replaced by a call to CORD_to_char_star. - */ - -# ifndef CORD_BUFSZ -# define CORD_BUFSZ 128 -# endif - -typedef struct CORD_ec_struct { - CORD ec_cord; - char * ec_bufptr; - char ec_buf[CORD_BUFSZ+1]; -} CORD_ec[1]; - -/* This structure represents the concatenation of ec_cord with */ -/* ec_buf[0 ... (ec_bufptr-ec_buf-1)] */ - -/* Flush the buffer part of the extended chord into ec_cord. */ -/* Note that this is almost the only real function, and it is */ -/* implemented in 6 lines in cordxtra.c */ -void CORD_ec_flush_buf(CORD_ec x); - -/* Convert an extensible cord to a cord. */ -# define CORD_ec_to_cord(x) (CORD_ec_flush_buf(x), (x)[0].ec_cord) - -/* Initialize an extensible cord. */ -# define CORD_ec_init(x) ((x)[0].ec_cord = 0, (x)[0].ec_bufptr = (x)[0].ec_buf) - -/* Append a character to an extensible cord. */ -# define CORD_ec_append(x, c) \ - { \ - if ((x)[0].ec_bufptr == (x)[0].ec_buf + CORD_BUFSZ) { \ - CORD_ec_flush_buf(x); \ - } \ - *((x)[0].ec_bufptr)++ = (c); \ - } - -/* Append a cord to an extensible cord. Structure remains shared with */ -/* original. */ -void CORD_ec_append_cord(CORD_ec x, CORD s); - -# endif /* EC_H */ diff --git a/boehm-gc/include/gc.h b/boehm-gc/include/gc.h deleted file mode 100644 index cc74765d098..00000000000 --- a/boehm-gc/include/gc.h +++ /dev/null @@ -1,766 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. - * Copyright 1996 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -/* - * Note that this defines a large number of tuning hooks, which can - * safely be ignored in nearly all cases. For normal use it suffices - * to call only GC_MALLOC and perhaps GC_REALLOC. - * For better performance, also look at GC_MALLOC_ATOMIC, and - * GC_enable_incremental. If you need an action to be performed - * immediately before an object is collected, look at GC_register_finalizer. - * If you are using Solaris threads, look at the end of this file. - * Everything else is best ignored unless you encounter performance - * problems. - */ - -#ifndef _GC_H - -# define _GC_H -# define __GC -# include <stddef.h> - -#if defined(__CYGWIN32__) && defined(GC_USE_DLL) -#include "libgc_globals.h" -#endif - -#if defined(_MSC_VER) && defined(_DLL) -# ifdef GC_BUILD -# define GC_API __declspec(dllexport) -# else -# define GC_API __declspec(dllimport) -# endif -#endif - -#if defined(__WATCOMC__) && defined(GC_DLL) -# ifdef GC_BUILD -# define GC_API extern __declspec(dllexport) -# else -# define GC_API extern __declspec(dllimport) -# endif -#endif - -#ifndef GC_API -#define GC_API extern -#endif - -# if defined(__STDC__) || defined(__cplusplus) -# define GC_PROTO(args) args - typedef void * GC_PTR; -# define GC_CONST const -# else -# define GC_PROTO(args) () - typedef char * GC_PTR; -# define GC_CONST -# endif - -# ifdef __cplusplus - extern "C" { -# endif - - -/* Define word and signed_word to be unsigned and signed types of the */ -/* size as char * or void *. There seems to be no way to do this */ -/* even semi-portably. The following is probably no better/worse */ -/* than almost anything else. */ -/* The ANSI standard suggests that size_t and ptr_diff_t might be */ -/* better choices. But those appear to have incorrect definitions */ -/* on may systems. Notably "typedef int size_t" seems to be both */ -/* frequent and WRONG. */ -typedef unsigned long GC_word; -typedef long GC_signed_word; - -/* Public read-only variables */ - -GC_API GC_word GC_gc_no;/* Counter incremented per collection. */ - /* Includes empty GCs at startup. */ - - -/* Public R/W variables */ - -GC_API GC_PTR (*GC_oom_fn) GC_PROTO((size_t bytes_requested)); - /* When there is insufficient memory to satisfy */ - /* an allocation request, we return */ - /* (*GC_oom_fn)(). By default this just */ - /* returns 0. */ - /* If it returns, it must return 0 or a valid */ - /* pointer to a previously allocated heap */ - /* object. */ - -GC_API int GC_find_leak; - /* Do not actually garbage collect, but simply */ - /* report inaccessible memory that was not */ - /* deallocated with GC_free. Initial value */ - /* is determined by FIND_LEAK macro. */ - -GC_API int GC_quiet; /* Disable statistics output. Only matters if */ - /* collector has been compiled with statistics */ - /* enabled. This involves a performance cost, */ - /* and is thus not the default. */ - -GC_API int GC_finalize_on_demand; - /* If nonzero, finalizers will only be run in */ - /* response to an eplit GC_invoke_finalizers */ - /* call. The default is determined by whether */ - /* the FINALIZE_ON_DEMAND macro is defined */ - /* when the collector is built. */ - -GC_API int GC_java_finalization; - /* Mark objects reachable from finalizable */ - /* objects in a separate postpass. This makes */ - /* it a bit safer to use non-topologically- */ - /* ordered finalization. Default value is */ - /* determined by JAVA_FINALIZATION macro. */ - -GC_API int GC_dont_gc; /* Dont collect unless explicitly requested, e.g. */ - /* because it's not safe. */ - -GC_API int GC_dont_expand; - /* Dont expand heap unless explicitly requested */ - /* or forced to. */ - -GC_API int GC_full_freq; /* Number of partial collections between */ - /* full collections. Matters only if */ - /* GC_incremental is set. */ - /* Full collections are also triggered if */ - /* the collector detects a substantial */ - /* increase in the number of in-use heap */ - /* blocks. Values in the tens are now */ - /* perfectly reasonable, unlike for */ - /* earlier GC versions. */ - -GC_API GC_word GC_non_gc_bytes; - /* Bytes not considered candidates for collection. */ - /* Used only to control scheduling of collections. */ - -GC_API GC_word GC_free_space_divisor; - /* We try to make sure that we allocate at */ - /* least N/GC_free_space_divisor bytes between */ - /* collections, where N is the heap size plus */ - /* a rough estimate of the root set size. */ - /* Initially, GC_free_space_divisor = 4. */ - /* Increasing its value will use less space */ - /* but more collection time. Decreasing it */ - /* will appreciably decrease collection time */ - /* at the expense of space. */ - /* GC_free_space_divisor = 1 will effectively */ - /* disable collections. */ - -GC_API GC_word GC_max_retries; - /* The maximum number of GCs attempted before */ - /* reporting out of memory after heap */ - /* expansion fails. Initially 0. */ - - -GC_API char *GC_stackbottom; /* Cool end of user stack. */ - /* May be set in the client prior to */ - /* calling any GC_ routines. This */ - /* avoids some overhead, and */ - /* potentially some signals that can */ - /* confuse debuggers. Otherwise the */ - /* collector attempts to set it */ - /* automatically. */ - /* For multithreaded code, this is the */ - /* cold end of the stack for the */ - /* primordial thread. */ - -/* Public procedures */ -/* - * general purpose allocation routines, with roughly malloc calling conv. - * The atomic versions promise that no relevant pointers are contained - * in the object. The nonatomic versions guarantee that the new object - * is cleared. GC_malloc_stubborn promises that no changes to the object - * will occur after GC_end_stubborn_change has been called on the - * result of GC_malloc_stubborn. GC_malloc_uncollectable allocates an object - * that is scanned for pointers to collectable objects, but is not itself - * collectable. GC_malloc_uncollectable and GC_free called on the resulting - * object implicitly update GC_non_gc_bytes appropriately. - */ -GC_API GC_PTR GC_malloc GC_PROTO((size_t size_in_bytes)); -GC_API GC_PTR GC_malloc_atomic GC_PROTO((size_t size_in_bytes)); -GC_API GC_PTR GC_malloc_uncollectable GC_PROTO((size_t size_in_bytes)); -GC_API GC_PTR GC_malloc_stubborn GC_PROTO((size_t size_in_bytes)); - -/* The following is only defined if the library has been suitably */ -/* compiled: */ -GC_API GC_PTR GC_malloc_atomic_uncollectable GC_PROTO((size_t size_in_bytes)); - -/* Explicitly deallocate an object. Dangerous if used incorrectly. */ -/* Requires a pointer to the base of an object. */ -/* If the argument is stubborn, it should not be changeable when freed. */ -/* An object should not be enable for finalization when it is */ -/* explicitly deallocated. */ -/* GC_free(0) is a no-op, as required by ANSI C for free. */ -GC_API void GC_free GC_PROTO((GC_PTR object_addr)); - -/* - * Stubborn objects may be changed only if the collector is explicitly informed. - * The collector is implicitly informed of coming change when such - * an object is first allocated. The following routines inform the - * collector that an object will no longer be changed, or that it will - * once again be changed. Only nonNIL pointer stores into the object - * are considered to be changes. The argument to GC_end_stubborn_change - * must be exacly the value returned by GC_malloc_stubborn or passed to - * GC_change_stubborn. (In the second case it may be an interior pointer - * within 512 bytes of the beginning of the objects.) - * There is a performance penalty for allowing more than - * one stubborn object to be changed at once, but it is acceptable to - * do so. The same applies to dropping stubborn objects that are still - * changeable. - */ -GC_API void GC_change_stubborn GC_PROTO((GC_PTR)); -GC_API void GC_end_stubborn_change GC_PROTO((GC_PTR)); - -/* Return a pointer to the base (lowest address) of an object given */ -/* a pointer to a location within the object. */ -/* Return 0 if displaced_pointer doesn't point to within a valid */ -/* object. */ -GC_API GC_PTR GC_base GC_PROTO((GC_PTR displaced_pointer)); - -/* Given a pointer to the base of an object, return its size in bytes. */ -/* The returned size may be slightly larger than what was originally */ -/* requested. */ -GC_API size_t GC_size GC_PROTO((GC_PTR object_addr)); - -/* For compatibility with C library. This is occasionally faster than */ -/* a malloc followed by a bcopy. But if you rely on that, either here */ -/* or with the standard C library, your code is broken. In my */ -/* opinion, it shouldn't have been invented, but now we're stuck. -HB */ -/* The resulting object has the same kind as the original. */ -/* If the argument is stubborn, the result will have changes enabled. */ -/* It is an error to have changes enabled for the original object. */ -/* Follows ANSI comventions for NULL old_object. */ -GC_API GC_PTR GC_realloc - GC_PROTO((GC_PTR old_object, size_t new_size_in_bytes)); - -/* Explicitly increase the heap size. */ -/* Returns 0 on failure, 1 on success. */ -GC_API int GC_expand_hp GC_PROTO((size_t number_of_bytes)); - -/* Limit the heap size to n bytes. Useful when you're debugging, */ -/* especially on systems that don't handle running out of memory well. */ -/* n == 0 ==> unbounded. This is the default. */ -GC_API void GC_set_max_heap_size GC_PROTO((GC_word n)); - -/* Inform the collector that a certain section of statically allocated */ -/* memory contains no pointers to garbage collected memory. Thus it */ -/* need not be scanned. This is sometimes important if the application */ -/* maps large read/write files into the address space, which could be */ -/* mistaken for dynamic library data segments on some systems. */ -GC_API void GC_exclude_static_roots GC_PROTO((GC_PTR start, GC_PTR finish)); - -/* Clear the set of root segments. Wizards only. */ -GC_API void GC_clear_roots GC_PROTO((void)); - -/* Add a root segment. Wizards only. */ -GC_API void GC_add_roots GC_PROTO((char * low_address, - char * high_address_plus_1)); - -/* Add a displacement to the set of those considered valid by the */ -/* collector. GC_register_displacement(n) means that if p was returned */ -/* by GC_malloc, then (char *)p + n will be considered to be a valid */ -/* pointer to n. N must be small and less than the size of p. */ -/* (All pointers to the interior of objects from the stack are */ -/* considered valid in any case. This applies to heap objects and */ -/* static data.) */ -/* Preferably, this should be called before any other GC procedures. */ -/* Calling it later adds to the probability of excess memory */ -/* retention. */ -/* This is a no-op if the collector was compiled with recognition of */ -/* arbitrary interior pointers enabled, which is now the default. */ -GC_API void GC_register_displacement GC_PROTO((GC_word n)); - -/* The following version should be used if any debugging allocation is */ -/* being done. */ -GC_API void GC_debug_register_displacement GC_PROTO((GC_word n)); - -/* Explicitly trigger a full, world-stop collection. */ -GC_API void GC_gcollect GC_PROTO((void)); - -/* Trigger a full world-stopped collection. Abort the collection if */ -/* and when stop_func returns a nonzero value. Stop_func will be */ -/* called frequently, and should be reasonably fast. This works even */ -/* if virtual dirty bits, and hence incremental collection is not */ -/* available for this architecture. Collections can be aborted faster */ -/* than normal pause times for incremental collection. However, */ -/* aborted collections do no useful work; the next collection needs */ -/* to start from the beginning. */ -/* Return 0 if the collection was aborted, 1 if it succeeded. */ -typedef int (* GC_stop_func) GC_PROTO((void)); -GC_API int GC_try_to_collect GC_PROTO((GC_stop_func stop_func)); - -/* Return the number of bytes in the heap. Excludes collector private */ -/* data structures. Includes empty blocks and fragmentation loss. */ -/* Includes some pages that were allocated but never written. */ -GC_API size_t GC_get_heap_size GC_PROTO((void)); - -/* Return a lower bound on the number of free bytes in the heap. */ -GC_API size_t GC_get_free_bytes GC_PROTO((void)); - -/* Return the number of bytes allocated since the last collection. */ -GC_API size_t GC_get_bytes_since_gc GC_PROTO((void)); - -/* Enable incremental/generational collection. */ -/* Not advisable unless dirty bits are */ -/* available or most heap objects are */ -/* pointerfree(atomic) or immutable. */ -/* Don't use in leak finding mode. */ -/* Ignored if GC_dont_gc is true. */ -GC_API void GC_enable_incremental GC_PROTO((void)); - -/* Perform some garbage collection work, if appropriate. */ -/* Return 0 if there is no more work to be done. */ -/* Typically performs an amount of work corresponding roughly */ -/* to marking from one page. May do more work if further */ -/* progress requires it, e.g. if incremental collection is */ -/* disabled. It is reasonable to call this in a wait loop */ -/* until it returns 0. */ -GC_API int GC_collect_a_little GC_PROTO((void)); - -/* Allocate an object of size lb bytes. The client guarantees that */ -/* as long as the object is live, it will be referenced by a pointer */ -/* that points to somewhere within the first 256 bytes of the object. */ -/* (This should normally be declared volatile to prevent the compiler */ -/* from invalidating this assertion.) This routine is only useful */ -/* if a large array is being allocated. It reduces the chance of */ -/* accidentally retaining such an array as a result of scanning an */ -/* integer that happens to be an address inside the array. (Actually, */ -/* it reduces the chance of the allocator not finding space for such */ -/* an array, since it will try hard to avoid introducing such a false */ -/* reference.) On a SunOS 4.X or MS Windows system this is recommended */ -/* for arrays likely to be larger than 100K or so. For other systems, */ -/* or if the collector is not configured to recognize all interior */ -/* pointers, the threshold is normally much higher. */ -GC_API GC_PTR GC_malloc_ignore_off_page GC_PROTO((size_t lb)); -GC_API GC_PTR GC_malloc_atomic_ignore_off_page GC_PROTO((size_t lb)); - -#if defined(__sgi) && !defined(__GNUC__) && _COMPILER_VERSION >= 720 -# define GC_ADD_CALLER -# define GC_RETURN_ADDR (GC_word)__return_address -#endif - -#ifdef GC_ADD_CALLER -# define GC_EXTRAS GC_RETURN_ADDR, __FILE__, __LINE__ -# define GC_EXTRA_PARAMS GC_word ra, GC_CONST char * descr_string, - int descr_int -#else -# define GC_EXTRAS __FILE__, __LINE__ -# define GC_EXTRA_PARAMS GC_CONST char * descr_string, int descr_int -#endif - -/* Debugging (annotated) allocation. GC_gcollect will check */ -/* objects allocated in this way for overwrites, etc. */ -GC_API GC_PTR GC_debug_malloc - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API GC_PTR GC_debug_malloc_atomic - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API GC_PTR GC_debug_malloc_uncollectable - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API GC_PTR GC_debug_malloc_stubborn - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API void GC_debug_free GC_PROTO((GC_PTR object_addr)); -GC_API GC_PTR GC_debug_realloc - GC_PROTO((GC_PTR old_object, size_t new_size_in_bytes, - GC_EXTRA_PARAMS)); - -GC_API void GC_debug_change_stubborn GC_PROTO((GC_PTR)); -GC_API void GC_debug_end_stubborn_change GC_PROTO((GC_PTR)); -# ifdef GC_DEBUG -# define GC_MALLOC(sz) GC_debug_malloc(sz, GC_EXTRAS) -# define GC_MALLOC_ATOMIC(sz) GC_debug_malloc_atomic(sz, GC_EXTRAS) -# define GC_MALLOC_UNCOLLECTABLE(sz) GC_debug_malloc_uncollectable(sz, \ - GC_EXTRAS) -# define GC_REALLOC(old, sz) GC_debug_realloc(old, sz, GC_EXTRAS) -# define GC_FREE(p) GC_debug_free(p) -# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ - GC_debug_register_finalizer(p, f, d, of, od) -# define GC_REGISTER_FINALIZER_IGNORE_SELF(p, f, d, of, od) \ - GC_debug_register_finalizer_ignore_self(p, f, d, of, od) -# define GC_MALLOC_STUBBORN(sz) GC_debug_malloc_stubborn(sz, GC_EXTRAS); -# define GC_CHANGE_STUBBORN(p) GC_debug_change_stubborn(p) -# define GC_END_STUBBORN_CHANGE(p) GC_debug_end_stubborn_change(p) -# define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ - GC_general_register_disappearing_link(link, GC_base(obj)) -# define GC_REGISTER_DISPLACEMENT(n) GC_debug_register_displacement(n) -# else -# define GC_MALLOC(sz) GC_malloc(sz) -# define GC_MALLOC_ATOMIC(sz) GC_malloc_atomic(sz) -# define GC_MALLOC_UNCOLLECTABLE(sz) GC_malloc_uncollectable(sz) -# define GC_REALLOC(old, sz) GC_realloc(old, sz) -# define GC_FREE(p) GC_free(p) -# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ - GC_register_finalizer(p, f, d, of, od) -# define GC_REGISTER_FINALIZER_IGNORE_SELF(p, f, d, of, od) \ - GC_register_finalizer_ignore_self(p, f, d, of, od) -# define GC_MALLOC_STUBBORN(sz) GC_malloc_stubborn(sz) -# define GC_CHANGE_STUBBORN(p) GC_change_stubborn(p) -# define GC_END_STUBBORN_CHANGE(p) GC_end_stubborn_change(p) -# define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ - GC_general_register_disappearing_link(link, obj) -# define GC_REGISTER_DISPLACEMENT(n) GC_register_displacement(n) -# endif -/* The following are included because they are often convenient, and */ -/* reduce the chance for a misspecifed size argument. But calls may */ -/* expand to something syntactically incorrect if t is a complicated */ -/* type expression. */ -# define GC_NEW(t) (t *)GC_MALLOC(sizeof (t)) -# define GC_NEW_ATOMIC(t) (t *)GC_MALLOC_ATOMIC(sizeof (t)) -# define GC_NEW_STUBBORN(t) (t *)GC_MALLOC_STUBBORN(sizeof (t)) -# define GC_NEW_UNCOLLECTABLE(t) (t *)GC_MALLOC_UNCOLLECTABLE(sizeof (t)) - -/* Finalization. Some of these primitives are grossly unsafe. */ -/* The idea is to make them both cheap, and sufficient to build */ -/* a safer layer, closer to PCedar finalization. */ -/* The interface represents my conclusions from a long discussion */ -/* with Alan Demers, Dan Greene, Carl Hauser, Barry Hayes, */ -/* Christian Jacobi, and Russ Atkinson. It's not perfect, and */ -/* probably nobody else agrees with it. Hans-J. Boehm 3/13/92 */ -typedef void (*GC_finalization_proc) - GC_PROTO((GC_PTR obj, GC_PTR client_data)); - -GC_API void GC_register_finalizer - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); -GC_API void GC_debug_register_finalizer - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); - /* When obj is no longer accessible, invoke */ - /* (*fn)(obj, cd). If a and b are inaccessible, and */ - /* a points to b (after disappearing links have been */ - /* made to disappear), then only a will be */ - /* finalized. (If this does not create any new */ - /* pointers to b, then b will be finalized after the */ - /* next collection.) Any finalizable object that */ - /* is reachable from itself by following one or more */ - /* pointers will not be finalized (or collected). */ - /* Thus cycles involving finalizable objects should */ - /* be avoided, or broken by disappearing links. */ - /* All but the last finalizer registered for an object */ - /* is ignored. */ - /* Finalization may be removed by passing 0 as fn. */ - /* Finalizers are implicitly unregistered just before */ - /* they are invoked. */ - /* The old finalizer and client data are stored in */ - /* *ofn and *ocd. */ - /* Fn is never invoked on an accessible object, */ - /* provided hidden pointers are converted to real */ - /* pointers only if the allocation lock is held, and */ - /* such conversions are not performed by finalization */ - /* routines. */ - /* If GC_register_finalizer is aborted as a result of */ - /* a signal, the object may be left with no */ - /* finalization, even if neither the old nor new */ - /* finalizer were NULL. */ - /* Obj should be the nonNULL starting address of an */ - /* object allocated by GC_malloc or friends. */ - /* Note that any garbage collectable object referenced */ - /* by cd will be considered accessible until the */ - /* finalizer is invoked. */ - -/* Another versions of the above follow. It ignores */ -/* self-cycles, i.e. pointers from a finalizable object to */ -/* itself. There is a stylistic argument that this is wrong, */ -/* but it's unavoidable for C++, since the compiler may */ -/* silently introduce these. It's also benign in that specific */ -/* case. */ -GC_API void GC_register_finalizer_ignore_self - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); -GC_API void GC_debug_register_finalizer_ignore_self - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); - -/* The following routine may be used to break cycles between */ -/* finalizable objects, thus causing cyclic finalizable */ -/* objects to be finalized in the correct order. Standard */ -/* use involves calling GC_register_disappearing_link(&p), */ -/* where p is a pointer that is not followed by finalization */ -/* code, and should not be considered in determining */ -/* finalization order. */ -GC_API int GC_register_disappearing_link GC_PROTO((GC_PTR * /* link */)); - /* Link should point to a field of a heap allocated */ - /* object obj. *link will be cleared when obj is */ - /* found to be inaccessible. This happens BEFORE any */ - /* finalization code is invoked, and BEFORE any */ - /* decisions about finalization order are made. */ - /* This is useful in telling the finalizer that */ - /* some pointers are not essential for proper */ - /* finalization. This may avoid finalization cycles. */ - /* Note that obj may be resurrected by another */ - /* finalizer, and thus the clearing of *link may */ - /* be visible to non-finalization code. */ - /* There's an argument that an arbitrary action should */ - /* be allowed here, instead of just clearing a pointer. */ - /* But this causes problems if that action alters, or */ - /* examines connectivity. */ - /* Returns 1 if link was already registered, 0 */ - /* otherwise. */ - /* Only exists for backward compatibility. See below: */ - -GC_API int GC_general_register_disappearing_link - GC_PROTO((GC_PTR * /* link */, GC_PTR obj)); - /* A slight generalization of the above. *link is */ - /* cleared when obj first becomes inaccessible. This */ - /* can be used to implement weak pointers easily and */ - /* safely. Typically link will point to a location */ - /* holding a disguised pointer to obj. (A pointer */ - /* inside an "atomic" object is effectively */ - /* disguised.) In this way soft */ - /* pointers are broken before any object */ - /* reachable from them are finalized. Each link */ - /* May be registered only once, i.e. with one obj */ - /* value. This was added after a long email discussion */ - /* with John Ellis. */ - /* Obj must be a pointer to the first word of an object */ - /* we allocated. It is unsafe to explicitly deallocate */ - /* the object containing link. Explicitly deallocating */ - /* obj may or may not cause link to eventually be */ - /* cleared. */ -GC_API int GC_unregister_disappearing_link GC_PROTO((GC_PTR * /* link */)); - /* Returns 0 if link was not actually registered. */ - /* Undoes a registration by either of the above two */ - /* routines. */ - -/* Auxiliary fns to make finalization work correctly with displaced */ -/* pointers introduced by the debugging allocators. */ -GC_API GC_PTR GC_make_closure GC_PROTO((GC_finalization_proc fn, GC_PTR data)); -GC_API void GC_debug_invoke_finalizer GC_PROTO((GC_PTR obj, GC_PTR data)); - -GC_API int GC_invoke_finalizers GC_PROTO((void)); - /* Run finalizers for all objects that are ready to */ - /* be finalized. Return the number of finalizers */ - /* that were run. Normally this is also called */ - /* implicitly during some allocations. If */ - /* GC-finalize_on_demand is nonzero, it must be called */ - /* explicitly. */ - -/* GC_set_warn_proc can be used to redirect or filter warning messages. */ -/* p may not be a NULL pointer. */ -typedef void (*GC_warn_proc) GC_PROTO((char *msg, GC_word arg)); -GC_API GC_warn_proc GC_set_warn_proc GC_PROTO((GC_warn_proc p)); - /* Returns old warning procedure. */ - -/* The following is intended to be used by a higher level */ -/* (e.g. cedar-like) finalization facility. It is expected */ -/* that finalization code will arrange for hidden pointers to */ -/* disappear. Otherwise objects can be accessed after they */ -/* have been collected. */ -/* Note that putting pointers in atomic objects or in */ -/* nonpointer slots of "typed" objects is equivalent to */ -/* disguising them in this way, and may have other advantages. */ -# if defined(I_HIDE_POINTERS) || defined(GC_I_HIDE_POINTERS) - typedef GC_word GC_hidden_pointer; -# define HIDE_POINTER(p) (~(GC_hidden_pointer)(p)) -# define REVEAL_POINTER(p) ((GC_PTR)(HIDE_POINTER(p))) - /* Converting a hidden pointer to a real pointer requires verifying */ - /* that the object still exists. This involves acquiring the */ - /* allocator lock to avoid a race with the collector. */ -# endif /* I_HIDE_POINTERS */ - -typedef GC_PTR (*GC_fn_type) GC_PROTO((GC_PTR client_data)); -GC_API GC_PTR GC_call_with_alloc_lock - GC_PROTO((GC_fn_type fn, GC_PTR client_data)); - -/* Check that p and q point to the same object. */ -/* Fail conspicuously if they don't. */ -/* Returns the first argument. */ -/* Succeeds if neither p nor q points to the heap. */ -/* May succeed if both p and q point to between heap objects. */ -GC_API GC_PTR GC_same_obj GC_PROTO((GC_PTR p, GC_PTR q)); - -/* Checked pointer pre- and post- increment operations. Note that */ -/* the second argument is in units of bytes, not multiples of the */ -/* object size. This should either be invoked from a macro, or the */ -/* call should be automatically generated. */ -GC_API GC_PTR GC_pre_incr GC_PROTO((GC_PTR *p, size_t how_much)); -GC_API GC_PTR GC_post_incr GC_PROTO((GC_PTR *p, size_t how_much)); - -/* Check that p is visible */ -/* to the collector as a possibly pointer containing location. */ -/* If it isn't fail conspicuously. */ -/* Returns the argument in all cases. May erroneously succeed */ -/* in hard cases. (This is intended for debugging use with */ -/* untyped allocations. The idea is that it should be possible, though */ -/* slow, to add such a call to all indirect pointer stores.) */ -/* Currently useless for multithreaded worlds. */ -GC_API GC_PTR GC_is_visible GC_PROTO((GC_PTR p)); - -/* Check that if p is a pointer to a heap page, then it points to */ -/* a valid displacement within a heap object. */ -/* Fail conspicuously if this property does not hold. */ -/* Uninteresting with ALL_INTERIOR_POINTERS. */ -/* Always returns its argument. */ -GC_API GC_PTR GC_is_valid_displacement GC_PROTO((GC_PTR p)); - -/* Safer, but slow, pointer addition. Probably useful mainly with */ -/* a preprocessor. Useful only for heap pointers. */ -#ifdef GC_DEBUG -# define GC_PTR_ADD3(x, n, type_of_result) \ - ((type_of_result)GC_same_obj((x)+(n), (x))) -# define GC_PRE_INCR3(x, n, type_of_result) \ - ((type_of_result)GC_pre_incr(&(x), (n)*sizeof(*x)) -# define GC_POST_INCR2(x, type_of_result) \ - ((type_of_result)GC_post_incr(&(x), sizeof(*x)) -# ifdef __GNUC__ -# define GC_PTR_ADD(x, n) \ - GC_PTR_ADD3(x, n, typeof(x)) -# define GC_PRE_INCR(x, n) \ - GC_PRE_INCR3(x, n, typeof(x)) -# define GC_POST_INCR(x, n) \ - GC_POST_INCR3(x, typeof(x)) -# else - /* We can't do this right without typeof, which ANSI */ - /* decided was not sufficiently useful. Repeatedly */ - /* mentioning the arguments seems too dangerous to be */ - /* useful. So does not casting the result. */ -# define GC_PTR_ADD(x, n) ((x)+(n)) -# endif -#else /* !GC_DEBUG */ -# define GC_PTR_ADD3(x, n, type_of_result) ((x)+(n)) -# define GC_PTR_ADD(x, n) ((x)+(n)) -# define GC_PRE_INCR3(x, n, type_of_result) ((x) += (n)) -# define GC_PRE_INCR(x, n) ((x) += (n)) -# define GC_POST_INCR2(x, n, type_of_result) ((x)++) -# define GC_POST_INCR(x, n) ((x)++) -#endif - -/* Safer assignment of a pointer to a nonstack location. */ -#ifdef GC_DEBUG -# ifdef __STDC__ -# define GC_PTR_STORE(p, q) \ - (*(void **)GC_is_visible(p) = GC_is_valid_displacement(q)) -# else -# define GC_PTR_STORE(p, q) \ - (*(char **)GC_is_visible(p) = GC_is_valid_displacement(q)) -# endif -#else /* !GC_DEBUG */ -# define GC_PTR_STORE(p, q) *((p) = (q)) -#endif - -/* Fynctions called to report pointer checking errors */ -GC_API void (*GC_same_obj_print_proc) GC_PROTO((GC_PTR p, GC_PTR q)); - -GC_API void (*GC_is_valid_displacement_print_proc) - GC_PROTO((GC_PTR p)); - -GC_API void (*GC_is_visible_print_proc) - GC_PROTO((GC_PTR p)); - -#if defined(_SOLARIS_PTHREADS) && !defined(SOLARIS_THREADS) -# define SOLARIS_THREADS -#endif - -#ifdef SOLARIS_THREADS -/* We need to intercept calls to many of the threads primitives, so */ -/* that we can locate thread stacks and stop the world. */ -/* Note also that the collector cannot see thread specific data. */ -/* Thread specific data should generally consist of pointers to */ -/* uncollectable objects, which are deallocated using the destructor */ -/* facility in thr_keycreate. */ -# include <thread.h> -# include <signal.h> - int GC_thr_create(void *stack_base, size_t stack_size, - void *(*start_routine)(void *), void *arg, long flags, - thread_t *new_thread); - int GC_thr_join(thread_t wait_for, thread_t *departed, void **status); - int GC_thr_suspend(thread_t target_thread); - int GC_thr_continue(thread_t target_thread); - void * GC_dlopen(const char *path, int mode); - -# ifdef _SOLARIS_PTHREADS -# include <pthread.h> - extern int GC_pthread_create(pthread_t *new_thread, - const pthread_attr_t *attr, - void * (*thread_execp)(void *), void *arg); - extern int GC_pthread_join(pthread_t wait_for, void **status); - -# undef thread_t - -# define pthread_join GC_pthread_join -# define pthread_create GC_pthread_create -#endif - -# define thr_create GC_thr_create -# define thr_join GC_thr_join -# define thr_suspend GC_thr_suspend -# define thr_continue GC_thr_continue -# define dlopen GC_dlopen - -# endif /* SOLARIS_THREADS */ - - -#if defined(IRIX_THREADS) || defined(LINUX_THREADS) || defined(HPUX_THREADS) -/* We treat these similarly. */ -# include <pthread.h> -# include <signal.h> - - int GC_pthread_create(pthread_t *new_thread, - const pthread_attr_t *attr, - void *(*start_routine)(void *), void *arg); - int GC_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset); - int GC_pthread_join(pthread_t thread, void **retval); - -# define pthread_create GC_pthread_create -# define pthread_sigmask GC_pthread_sigmask -# define pthread_join GC_pthread_join - -#endif /* IRIX_THREADS || LINUX_THREADS */ - -# if defined(PCR) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \ - defined(IRIX_THREADS) || defined(LINUX_THREADS) || \ - defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS) - /* Any flavor of threads except SRC_M3. */ -/* This returns a list of objects, linked through their first */ -/* word. Its use can greatly reduce lock contention problems, since */ -/* the allocation lock can be acquired and released many fewer times. */ -/* lb must be large enough to hold the pointer field. */ -GC_PTR GC_malloc_many(size_t lb); -#define GC_NEXT(p) (*(GC_PTR *)(p)) /* Retrieve the next element */ - /* in returned list. */ -extern void GC_thr_init(); /* Needed for Solaris/X86 */ - -#endif /* THREADS && !SRC_M3 */ - -/* - * If you are planning on putting - * the collector in a SunOS 5 dynamic library, you need to call GC_INIT() - * from the statically loaded program section. - * This circumvents a Solaris 2.X (X<=4) linker bug. - */ -#if defined(sparc) || defined(__sparc) -# define GC_INIT() { extern end, etext; \ - GC_noop(&end, &etext); } -#else -# if defined(__CYGWIN32__) && defined(GC_USE_DLL) - /* - * Similarly gnu-win32 DLLs need explicit initialization - */ -# define GC_INIT() { GC_add_roots(DATASTART, DATAEND); } -# else -# define GC_INIT() -# endif -#endif - -#if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \ - || defined(_WIN32) - /* win32S may not free all resources on process exit. */ - /* This explicitly deallocates the heap. */ - GC_API void GC_win32_free_heap (); -#endif - -#ifdef __cplusplus - } /* end of extern "C" */ -#endif - -#endif /* _GC_H */ diff --git a/boehm-gc/include/gc_alloc.h b/boehm-gc/include/gc_alloc.h deleted file mode 100644 index 1f1d54aff95..00000000000 --- a/boehm-gc/include/gc_alloc.h +++ /dev/null @@ -1,380 +0,0 @@ -/* - * Copyright (c) 1996-1998 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -// -// This is a C++ header file that is intended to replace the SGI STL -// alloc.h. This assumes SGI STL version < 3.0. -// -// This assumes the collector has been compiled with -DATOMIC_UNCOLLECTABLE -// and -DALL_INTERIOR_POINTERS. We also recommend -// -DREDIRECT_MALLOC=GC_uncollectable_malloc. -// -// Some of this could be faster in the explicit deallocation case. In particular, -// we spend too much time clearing objects on the free lists. That could be avoided. -// -// This uses template classes with static members, and hence does not work -// with g++ 2.7.2 and earlier. -// - -#include "gc.h" - -#ifndef GC_ALLOC_H - -#define GC_ALLOC_H -#define __ALLOC_H // Prevent inclusion of the default version. Ugly. -#define __SGI_STL_ALLOC_H -#define __SGI_STL_INTERNAL_ALLOC_H - -#ifndef __ALLOC -# define __ALLOC alloc -#endif - -#include <stddef.h> -#include <string.h> - -// The following is just replicated from the conventional SGI alloc.h: - -template<class T, class alloc> -class simple_alloc { - -public: - static T *allocate(size_t n) - { return 0 == n? 0 : (T*) alloc::allocate(n * sizeof (T)); } - static T *allocate(void) - { return (T*) alloc::allocate(sizeof (T)); } - static void deallocate(T *p, size_t n) - { if (0 != n) alloc::deallocate(p, n * sizeof (T)); } - static void deallocate(T *p) - { alloc::deallocate(p, sizeof (T)); } -}; - -#include "gc.h" - -// The following need to match collector data structures. -// We can't include gc_priv.h, since that pulls in way too much stuff. -// This should eventually be factored out into another include file. - -extern "C" { - extern void ** const GC_objfreelist_ptr; - extern void ** const GC_aobjfreelist_ptr; - extern void ** const GC_uobjfreelist_ptr; - extern void ** const GC_auobjfreelist_ptr; - - extern void GC_incr_words_allocd(size_t words); - extern void GC_incr_mem_freed(size_t words); - - extern char * GC_generic_malloc_words_small(size_t word, int kind); -} - -// Object kinds; must match PTRFREE, NORMAL, UNCOLLECTABLE, and -// AUNCOLLECTABLE in gc_priv.h. - -enum { GC_PTRFREE = 0, GC_NORMAL = 1, GC_UNCOLLECTABLE = 2, - GC_AUNCOLLECTABLE = 3 }; - -enum { GC_max_fast_bytes = 255 }; - -enum { GC_bytes_per_word = sizeof(char *) }; - -enum { GC_byte_alignment = 8 }; - -enum { GC_word_alignment = GC_byte_alignment/GC_bytes_per_word }; - -inline void * &GC_obj_link(void * p) -{ return *(void **)p; } - -// Compute a number of words >= n+1 bytes. -// The +1 allows for pointers one past the end. -inline size_t GC_round_up(size_t n) -{ - return ((n + GC_byte_alignment)/GC_byte_alignment)*GC_word_alignment; -} - -// The same but don't allow for extra byte. -inline size_t GC_round_up_uncollectable(size_t n) -{ - return ((n + GC_byte_alignment - 1)/GC_byte_alignment)*GC_word_alignment; -} - -template <int dummy> -class GC_aux_template { -public: - // File local count of allocated words. Occasionally this is - // added into the global count. A separate count is necessary since the - // real one must be updated with a procedure call. - static size_t GC_words_recently_allocd; - - // Same for uncollectable mmory. Not yet reflected in either - // GC_words_recently_allocd or GC_non_gc_bytes. - static size_t GC_uncollectable_words_recently_allocd; - - // Similar counter for explicitly deallocated memory. - static size_t GC_mem_recently_freed; - - // Again for uncollectable memory. - static size_t GC_uncollectable_mem_recently_freed; - - static void * GC_out_of_line_malloc(size_t nwords, int kind); -}; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_words_recently_allocd = 0; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_uncollectable_words_recently_allocd = 0; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_mem_recently_freed = 0; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_uncollectable_mem_recently_freed = 0; - -template <int dummy> -void * GC_aux_template<dummy>::GC_out_of_line_malloc(size_t nwords, int kind) -{ - GC_words_recently_allocd += GC_uncollectable_words_recently_allocd; - GC_non_gc_bytes += - GC_bytes_per_word * GC_uncollectable_words_recently_allocd; - GC_uncollectable_words_recently_allocd = 0; - - GC_mem_recently_freed += GC_uncollectable_mem_recently_freed; - GC_non_gc_bytes -= - GC_bytes_per_word * GC_uncollectable_mem_recently_freed; - GC_uncollectable_mem_recently_freed = 0; - - GC_incr_words_allocd(GC_words_recently_allocd); - GC_words_recently_allocd = 0; - - GC_incr_mem_freed(GC_mem_recently_freed); - GC_mem_recently_freed = 0; - - return GC_generic_malloc_words_small(nwords, kind); -} - -typedef GC_aux_template<0> GC_aux; - -// A fast, single-threaded, garbage-collected allocator -// We assume the first word will be immediately overwritten. -// In this version, deallocation is not a noop, and explicit -// deallocation is likely to help performance. -template <int dummy> -class single_client_gc_alloc_template { - public: - static void * allocate(size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc(n); - flh = GC_objfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_NORMAL); - } - *flh = GC_obj_link(op); - GC_aux::GC_words_recently_allocd += nwords; - return op; - } - static void * ptr_free_allocate(size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc_atomic(n); - flh = GC_aobjfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_PTRFREE); - } - *flh = GC_obj_link(op); - GC_aux::GC_words_recently_allocd += nwords; - return op; - } - static void deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_objfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - memset((char *)p + GC_bytes_per_word, 0, - GC_bytes_per_word * (nwords - 1)); - *flh = p; - GC_aux::GC_mem_recently_freed += nwords; - } - } - static void ptr_free_deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_aobjfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - *flh = p; - GC_aux::GC_mem_recently_freed += nwords; - } - } -}; - -typedef single_client_gc_alloc_template<0> single_client_gc_alloc; - -// Once more, for uncollectable objects. -template <int dummy> -class single_client_alloc_template { - public: - static void * allocate(size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc_uncollectable(n); - flh = GC_uobjfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_UNCOLLECTABLE); - } - *flh = GC_obj_link(op); - GC_aux::GC_uncollectable_words_recently_allocd += nwords; - return op; - } - static void * ptr_free_allocate(size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc_atomic_uncollectable(n); - flh = GC_auobjfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_AUNCOLLECTABLE); - } - *flh = GC_obj_link(op); - GC_aux::GC_uncollectable_words_recently_allocd += nwords; - return op; - } - static void deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_uobjfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - *flh = p; - GC_aux::GC_uncollectable_mem_recently_freed += nwords; - } - } - static void ptr_free_deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_auobjfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - *flh = p; - GC_aux::GC_uncollectable_mem_recently_freed += nwords; - } - } -}; - -typedef single_client_alloc_template<0> single_client_alloc; - -template < int dummy > -class gc_alloc_template { - public: - static void * allocate(size_t n) { return GC_malloc(n); } - static void * ptr_free_allocate(size_t n) - { return GC_malloc_atomic(n); } - static void deallocate(void *, size_t) { } - static void ptr_free_deallocate(void *, size_t) { } -}; - -typedef gc_alloc_template < 0 > gc_alloc; - -template < int dummy > -class alloc_template { - public: - static void * allocate(size_t n) { return GC_malloc_uncollectable(n); } - static void * ptr_free_allocate(size_t n) - { return GC_malloc_atomic_uncollectable(n); } - static void deallocate(void *p, size_t) { GC_free(p); } - static void ptr_free_deallocate(void *p, size_t) { GC_free(p); } -}; - -typedef alloc_template < 0 > alloc; - -#ifdef _SGI_SOURCE - -// We want to specialize simple_alloc so that it does the right thing -// for all pointerfree types. At the moment there is no portable way to -// even approximate that. The following approximation should work for -// SGI compilers, and perhaps some others. - -# define __GC_SPECIALIZE(T,alloc) \ -class simple_alloc<T, alloc> { \ -public: \ - static T *allocate(size_t n) \ - { return 0 == n? 0 : \ - (T*) alloc::ptr_free_allocate(n * sizeof (T)); } \ - static T *allocate(void) \ - { return (T*) alloc::ptr_free_allocate(sizeof (T)); } \ - static void deallocate(T *p, size_t n) \ - { if (0 != n) alloc::ptr_free_deallocate(p, n * sizeof (T)); } \ - static void deallocate(T *p) \ - { alloc::ptr_free_deallocate(p, sizeof (T)); } \ -}; - -__GC_SPECIALIZE(char, gc_alloc) -__GC_SPECIALIZE(int, gc_alloc) -__GC_SPECIALIZE(unsigned, gc_alloc) -__GC_SPECIALIZE(float, gc_alloc) -__GC_SPECIALIZE(double, gc_alloc) - -__GC_SPECIALIZE(char, alloc) -__GC_SPECIALIZE(int, alloc) -__GC_SPECIALIZE(unsigned, alloc) -__GC_SPECIALIZE(float, alloc) -__GC_SPECIALIZE(double, alloc) - -__GC_SPECIALIZE(char, single_client_gc_alloc) -__GC_SPECIALIZE(int, single_client_gc_alloc) -__GC_SPECIALIZE(unsigned, single_client_gc_alloc) -__GC_SPECIALIZE(float, single_client_gc_alloc) -__GC_SPECIALIZE(double, single_client_gc_alloc) - -__GC_SPECIALIZE(char, single_client_alloc) -__GC_SPECIALIZE(int, single_client_alloc) -__GC_SPECIALIZE(unsigned, single_client_alloc) -__GC_SPECIALIZE(float, single_client_alloc) -__GC_SPECIALIZE(double, single_client_alloc) - -#ifdef __STL_USE_STD_ALLOCATORS - -???copy stuff from stl_alloc.h or remove it to a different file ??? - -#endif /* __STL_USE_STD_ALLOCATORS */ - -#endif /* _SGI_SOURCE */ - -#endif /* GC_ALLOC_H */ diff --git a/boehm-gc/include/gc_copy_descr.h b/boehm-gc/include/gc_copy_descr.h deleted file mode 100644 index 212c99e28dc..00000000000 --- a/boehm-gc/include/gc_copy_descr.h +++ /dev/null @@ -1,26 +0,0 @@ - -/* - * Copyright (c) 1999 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* Descriptor for allocation request. May be redefined by client. */ -typedef struct { - GC_word bitmap; /* Bitmap describing pointer locations. */ - /* High order bit correspond to 0th */ - /* word. 2 lsbs must be 0. */ - size_t length; /* In bytes, must be multiple of word */ - /* size. Must be >0, <= 512 */ -} * GC_copy_descriptor; - -/* The collector accesses descriptors only through these two macros. */ -#define GC_SIZE_FROM_DESCRIPTOR(d) ((d) -> length) -#define GC_BIT_MAP_FROM_DESCRIPTOR(d) ((d) -> bitmap) - diff --git a/boehm-gc/include/gc_cpp.h b/boehm-gc/include/gc_cpp.h deleted file mode 100644 index ad7df5d71fa..00000000000 --- a/boehm-gc/include/gc_cpp.h +++ /dev/null @@ -1,290 +0,0 @@ -#ifndef GC_CPP_H -#define GC_CPP_H -/**************************************************************************** -Copyright (c) 1994 by Xerox Corporation. All rights reserved. - -THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED -OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - -Permission is hereby granted to use or copy this program for any -purpose, provided the above notices are retained on all copies. -Permission to modify the code and to distribute modified code is -granted, provided the above notices are retained, and a notice that -the code was modified is included with the above copyright notice. -**************************************************************************** - -C++ Interface to the Boehm Collector - - John R. Ellis and Jesse Hull - Last modified on Mon Jul 24 15:43:42 PDT 1995 by ellis - -This interface provides access to the Boehm collector. It provides -basic facilities similar to those described in "Safe, Efficient -Garbage Collection for C++", by John R. Elis and David L. Detlefs -(ftp.parc.xerox.com:/pub/ellis/gc). - -All heap-allocated objects are either "collectable" or -"uncollectable". Programs must explicitly delete uncollectable -objects, whereas the garbage collector will automatically delete -collectable objects when it discovers them to be inaccessible. -Collectable objects may freely point at uncollectable objects and vice -versa. - -Objects allocated with the built-in "::operator new" are uncollectable. - -Objects derived from class "gc" are collectable. For example: - - class A: public gc {...}; - A* a = new A; // a is collectable. - -Collectable instances of non-class types can be allocated using the GC -placement: - - typedef int A[ 10 ]; - A* a = new (GC) A; - -Uncollectable instances of classes derived from "gc" can be allocated -using the NoGC placement: - - class A: public gc {...}; - A* a = new (NoGC) A; // a is uncollectable. - -Both uncollectable and collectable objects can be explicitly deleted -with "delete", which invokes an object's destructors and frees its -storage immediately. - -A collectable object may have a clean-up function, which will be -invoked when the collector discovers the object to be inaccessible. -An object derived from "gc_cleanup" or containing a member derived -from "gc_cleanup" has a default clean-up function that invokes the -object's destructors. Explicit clean-up functions may be specified as -an additional placement argument: - - A* a = ::new (GC, MyCleanup) A; - -An object is considered "accessible" by the collector if it can be -reached by a path of pointers from static variables, automatic -variables of active functions, or from some object with clean-up -enabled; pointers from an object to itself are ignored. - -Thus, if objects A and B both have clean-up functions, and A points at -B, B is considered accessible. After A's clean-up is invoked and its -storage released, B will then become inaccessible and will have its -clean-up invoked. If A points at B and B points to A, forming a -cycle, then that's considered a storage leak, and neither will be -collectable. See the interface gc.h for low-level facilities for -handling such cycles of objects with clean-up. - -The collector cannot guarrantee that it will find all inaccessible -objects. In practice, it finds almost all of them. - - -Cautions: - -1. Be sure the collector has been augmented with "make c++". - -2. If your compiler supports the new "operator new[]" syntax, then -add -DOPERATOR_NEW_ARRAY to the Makefile. - -If your compiler doesn't support "operator new[]", beware that an -array of type T, where T is derived from "gc", may or may not be -allocated as a collectable object (it depends on the compiler). Use -the explicit GC placement to make the array collectable. For example: - - class A: public gc {...}; - A* a1 = new A[ 10 ]; // collectable or uncollectable? - A* a2 = new (GC) A[ 10 ]; // collectable - -3. The destructors of collectable arrays of objects derived from -"gc_cleanup" will not be invoked properly. For example: - - class A: public gc_cleanup {...}; - A* a = new (GC) A[ 10 ]; // destructors not invoked correctly - -Typically, only the destructor for the first element of the array will -be invoked when the array is garbage-collected. To get all the -destructors of any array executed, you must supply an explicit -clean-up function: - - A* a = new (GC, MyCleanUp) A[ 10 ]; - -(Implementing clean-up of arrays correctly, portably, and in a way -that preserves the correct exception semantics requires a language -extension, e.g. the "gc" keyword.) - -4. Compiler bugs: - -* Solaris 2's CC (SC3.0) doesn't implement t->~T() correctly, so the -destructors of classes derived from gc_cleanup won't be invoked. -You'll have to explicitly register a clean-up function with -new-placement syntax. - -* Evidently cfront 3.0 does not allow destructors to be explicitly -invoked using the ANSI-conforming syntax t->~T(). If you're using -cfront 3.0, you'll have to comment out the class gc_cleanup, which -uses explicit invocation. - -****************************************************************************/ - -#include "gc.h" - -#ifndef THINK_CPLUS -#define _cdecl -#endif - -#if ! defined( OPERATOR_NEW_ARRAY ) \ - && (__BORLANDC__ >= 0x450 || (__GNUC__ >= 2 && __GNUC_MINOR__ >= 6) \ - || __WATCOMC__ >= 1050) -# define OPERATOR_NEW_ARRAY -#endif - -enum GCPlacement {GC, NoGC, PointerFreeGC}; - -class gc {public: - inline void* operator new( size_t size ); - inline void* operator new( size_t size, GCPlacement gcp ); - inline void operator delete( void* obj ); - -#ifdef OPERATOR_NEW_ARRAY - inline void* operator new[]( size_t size ); - inline void* operator new[]( size_t size, GCPlacement gcp ); - inline void operator delete[]( void* obj ); -#endif /* OPERATOR_NEW_ARRAY */ - }; - /* - Instances of classes derived from "gc" will be allocated in the - collected heap by default, unless an explicit NoGC placement is - specified. */ - -class gc_cleanup: virtual public gc {public: - inline gc_cleanup(); - inline virtual ~gc_cleanup(); -private: - inline static void _cdecl cleanup( void* obj, void* clientData );}; - /* - Instances of classes derived from "gc_cleanup" will be allocated - in the collected heap by default. When the collector discovers an - inaccessible object derived from "gc_cleanup" or containing a - member derived from "gc_cleanup", its destructors will be - invoked. */ - -extern "C" {typedef void (*GCCleanUpFunc)( void* obj, void* clientData );} - -inline void* operator new( - size_t size, - GCPlacement gcp, - GCCleanUpFunc cleanup = 0, - void* clientData = 0 ); - /* - Allocates a collectable or uncollected object, according to the - value of "gcp". - - For collectable objects, if "cleanup" is non-null, then when the - allocated object "obj" becomes inaccessible, the collector will - invoke the function "cleanup( obj, clientData )" but will not - invoke the object's destructors. It is an error to explicitly - delete an object allocated with a non-null "cleanup". - - It is an error to specify a non-null "cleanup" with NoGC or for - classes derived from "gc_cleanup" or containing members derived - from "gc_cleanup". */ - -#ifdef OPERATOR_NEW_ARRAY - -inline void* operator new[]( - size_t size, - GCPlacement gcp, - GCCleanUpFunc cleanup = 0, - void* clientData = 0 ); - /* - The operator new for arrays, identical to the above. */ - -#endif /* OPERATOR_NEW_ARRAY */ - -/**************************************************************************** - -Inline implementation - -****************************************************************************/ - -inline void* gc::operator new( size_t size ) { - return GC_MALLOC( size );} - -inline void* gc::operator new( size_t size, GCPlacement gcp ) { - if (gcp == GC) - return GC_MALLOC( size ); - else if (gcp == PointerFreeGC) - return GC_MALLOC_ATOMIC( size ); - else - return GC_MALLOC_UNCOLLECTABLE( size );} - -inline void gc::operator delete( void* obj ) { - GC_FREE( obj );} - - -#ifdef OPERATOR_NEW_ARRAY - -inline void* gc::operator new[]( size_t size ) { - return gc::operator new( size );} - -inline void* gc::operator new[]( size_t size, GCPlacement gcp ) { - return gc::operator new( size, gcp );} - -inline void gc::operator delete[]( void* obj ) { - gc::operator delete( obj );} - -#endif /* OPERATOR_NEW_ARRAY */ - - -inline gc_cleanup::~gc_cleanup() { - GC_REGISTER_FINALIZER_IGNORE_SELF( GC_base(this), 0, 0, 0, 0 );} - -inline void gc_cleanup::cleanup( void* obj, void* displ ) { - ((gc_cleanup*) ((char*) obj + (ptrdiff_t) displ))->~gc_cleanup();} - -inline gc_cleanup::gc_cleanup() { - GC_finalization_proc oldProc; - void* oldData; - void* base = GC_base( (void *) this ); - if (0 == base) return; - GC_REGISTER_FINALIZER_IGNORE_SELF( - base, cleanup, (void*) ((char*) this - (char*) base), - &oldProc, &oldData ); - if (0 != oldProc) { - GC_REGISTER_FINALIZER_IGNORE_SELF( base, oldProc, oldData, 0, 0 );}} - -inline void* operator new( - size_t size, - GCPlacement gcp, - GCCleanUpFunc cleanup, - void* clientData ) -{ - void* obj; - - if (gcp == GC) { - obj = GC_MALLOC( size ); - if (cleanup != 0) - GC_REGISTER_FINALIZER_IGNORE_SELF( - obj, cleanup, clientData, 0, 0 );} - else if (gcp == PointerFreeGC) { - obj = GC_MALLOC_ATOMIC( size );} - else { - obj = GC_MALLOC_UNCOLLECTABLE( size );}; - return obj;} - - -#ifdef OPERATOR_NEW_ARRAY - -inline void* operator new[]( - size_t size, - GCPlacement gcp, - GCCleanUpFunc cleanup, - void* clientData ) -{ - return ::operator new( size, gcp, cleanup, clientData );} - -#endif /* OPERATOR_NEW_ARRAY */ - - -#endif /* GC_CPP_H */ - diff --git a/boehm-gc/include/gc_inl.h b/boehm-gc/include/gc_inl.h deleted file mode 100644 index 700843bbf96..00000000000 --- a/boehm-gc/include/gc_inl.h +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* Boehm, October 3, 1995 2:07 pm PDT */ - -# ifndef GC_PRIVATE_H -# include "private/gc_priv.h" -# endif - -/* USE OF THIS FILE IS NOT RECOMMENDED unless the collector has been */ -/* compiled without -DALL_INTERIOR_POINTERS or with */ -/* -DDONT_ADD_BYTE_AT_END, or the specified size includes a pointerfree */ -/* word at the end. In the standard collector configuration, */ -/* the final word of each object may not be scanned. */ -/* This is most useful for compilers that generate C. */ -/* Manual use is hereby discouraged. */ - -/* Allocate n words (NOT BYTES). X is made to point to the result. */ -/* It is assumed that n < MAXOBJSZ, and */ -/* that n > 0. On machines requiring double word alignment of some */ -/* data, we also assume that n is 1 or even. This bypasses the */ -/* MERGE_SIZES mechanism. In order to minimize the number of distinct */ -/* free lists that are maintained, the caller should ensure that a */ -/* small number of distinct values of n are used. (The MERGE_SIZES */ -/* mechanism normally does this by ensuring that only the leading three */ -/* bits of n may be nonzero. See misc.c for details.) We really */ -/* recommend this only in cases in which n is a constant, and no */ -/* locking is required. */ -/* In that case it may allow the compiler to perform substantial */ -/* additional optimizations. */ -# define GC_MALLOC_WORDS(result,n) \ -{ \ - register ptr_t op; \ - register ptr_t *opp; \ - DCL_LOCK_STATE; \ - \ - opp = &(GC_objfreelist[n]); \ - FASTLOCK(); \ - if( !FASTLOCK_SUCCEEDED() || (op = *opp) == 0 ) { \ - FASTUNLOCK(); \ - (result) = GC_generic_malloc_words_small((n), NORMAL); \ - } else { \ - *opp = obj_link(op); \ - obj_link(op) = 0; \ - GC_words_allocd += (n); \ - FASTUNLOCK(); \ - (result) = (GC_PTR) op; \ - } \ -} - - -/* The same for atomic objects: */ -# define GC_MALLOC_ATOMIC_WORDS(result,n) \ -{ \ - register ptr_t op; \ - register ptr_t *opp; \ - DCL_LOCK_STATE; \ - \ - opp = &(GC_aobjfreelist[n]); \ - FASTLOCK(); \ - if( !FASTLOCK_SUCCEEDED() || (op = *opp) == 0 ) { \ - FASTUNLOCK(); \ - (result) = GC_generic_malloc_words_small((n), PTRFREE); \ - } else { \ - *opp = obj_link(op); \ - obj_link(op) = 0; \ - GC_words_allocd += (n); \ - FASTUNLOCK(); \ - (result) = (GC_PTR) op; \ - } \ -} - -/* And once more for two word initialized objects: */ -# define GC_CONS(result, first, second) \ -{ \ - register ptr_t op; \ - register ptr_t *opp; \ - DCL_LOCK_STATE; \ - \ - opp = &(GC_objfreelist[2]); \ - FASTLOCK(); \ - if( !FASTLOCK_SUCCEEDED() || (op = *opp) == 0 ) { \ - FASTUNLOCK(); \ - op = GC_generic_malloc_words_small(2, NORMAL); \ - } else { \ - *opp = obj_link(op); \ - GC_words_allocd += 2; \ - FASTUNLOCK(); \ - } \ - ((word *)op)[0] = (word)(first); \ - ((word *)op)[1] = (word)(second); \ - (result) = (GC_PTR) op; \ -} diff --git a/boehm-gc/include/gc_inline.h b/boehm-gc/include/gc_inline.h deleted file mode 100644 index db62d1d58a8..00000000000 --- a/boehm-gc/include/gc_inline.h +++ /dev/null @@ -1 +0,0 @@ -# include "gc_inl.h" diff --git a/boehm-gc/include/gc_nursery.h b/boehm-gc/include/gc_nursery.h deleted file mode 100644 index d109ff090dc..00000000000 --- a/boehm-gc/include/gc_nursery.h +++ /dev/null @@ -1,90 +0,0 @@ - -/* - * Copyright (c) 1999 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -/* - * THIS IMPLEMENTATION FOR THIS INTERFACE IS INCOMPLETE. - * NONE OF THIS HAS BEEN TESTED. DO NOT USE. - * - * Comments on the interface are appreciated, especially from - * potential users of the interface. - * - * This is a Bartlett style copying collector for young objects. - * We assume for now that all objects allocated through this - * mechanism have pointers only in the first BITMAP_BITS words. - * (On a 32-bit machine, BITMAP_BITS is 30.) - * Objects allocated in this manner should be rarely referenced - * by objects not allocated either through this interface, or through - * the typed allocation interface. - * If this interface is used, we assume that type information provided - * through either this or the typed allocation interface is valid - * in a stronger sense: - * - * 1) No pointers are stored in fields not marked as such. - * (Otherwise it is only necessary that objects referenced by - * fields marked as nonpointers are also reachable via another - * path.) - * 2) Values stored in pointer fields are either not addresses in - * the heap, or they really are pointers. In the latter case, it - * is acceptable to move the object they refer to, and to update - * the pointer. - * - * GC_free may not be invoked on objects allocated with GC_copying_malloc. - * - * No extra space is added to the end of objects allocated through this - * interface. If the client needs to maintain pointers past the - * end, the size should be explicitly padded. - * - * We assume that calls to this will usually be compiler generated. - * Hence the interface is allowed to be a bit ugly in return for speed. - */ - -#include "gc_copy_descr.h" - -/* GC_copy_descr.h must define */ -/* GC_SIZE_FROM_DESCRIPTOR(descr) and */ -/* GC_BIT_MAP_FROM_DESCRIPTOR(descr). */ -/* It may either be the GC supplied version of the header file, or a */ -/* client specific one that derives the information from a client- */ -/* specific type descriptor. */ - -typedef GC_PTR GC_copy_alloc_state; - /* Current allocator state. */ - /* Multiple allocation states */ - /* may be used for concurrent */ - /* allocation, or to enhance */ - /* locality. */ - /* Should be treated as opaque. */ - -/* Allocate a memory block of size given in the descriptor, and with */ -/* pointer layout given by the descriptor. The resulting block may not */ -/* be cleared, and should immediately be initialized by the client. */ -/* (A concurrent GC may see an uninitialized pointer field. If it */ -/* points outside the nursery, that's fine. If it points inside, it */ -/* may retain an object, and be relocated. But that's also fine, since */ -/* the new value will be immediately overwritten. */ -/* This variant acquires the allocation lock, and uses a default */ -/* global allocation state. */ -GC_PTR GC_copying_malloc(GC_copy_descriptor); - -/* A variant of the above that does no locking on the fast path, */ -/* and passes an explicit pointer to an allocation state. */ -/* The allocation state is updated. */ -/* There will eventually need to be a macro or inline function version */ -/* of this. */ -GC_PTR GC_copying_malloc2(GC_copy_descriptor, GC_copy_alloc_state *); - -/* Initialize an allocation state so that it can be used for */ -/* allocation. This implicitly reserves a small section of the */ -/* nursery for use with this allocator. */ -void GC_init_copy_alloc_state(GC_copy_alloc_state *); diff --git a/boehm-gc/include/gc_typed.h b/boehm-gc/include/gc_typed.h deleted file mode 100644 index e4a6b94756e..00000000000 --- a/boehm-gc/include/gc_typed.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. - * Copyright 1996 Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* - * Some simple primitives for allocation with explicit type information. - * Facilities for dynamic type inference may be added later. - * Should be used only for extremely performance critical applications, - * or if conservative collector leakage is otherwise a problem (unlikely). - * Note that this is implemented completely separately from the rest - * of the collector, and is not linked in unless referenced. - * This does not currently support GC_DEBUG in any interesting way. - */ -/* Boehm, May 19, 1994 2:13 pm PDT */ - -#ifndef _GC_TYPED_H -# define _GC_TYPED_H -# ifndef _GC_H -# include "gc.h" -# endif - -typedef GC_word * GC_bitmap; - /* The least significant bit of the first word is one if */ - /* the first word in the object may be a pointer. */ - -# define GC_get_bit(bm, index) \ - (((bm)[divWORDSZ(index)] >> modWORDSZ(index)) & 1) -# define GC_set_bit(bm, index) \ - (bm)[divWORDSZ(index)] |= (word)1 << modWORDSZ(index) - -typedef GC_word GC_descr; - -GC_API GC_descr GC_make_descriptor GC_PROTO((GC_bitmap bm, size_t len)); - /* Return a type descriptor for the object whose layout */ - /* is described by the argument. */ - /* The least significant bit of the first word is one */ - /* if the first word in the object may be a pointer. */ - /* The second argument specifies the number of */ - /* meaningful bits in the bitmap. The actual object */ - /* may be larger (but not smaller). Any additional */ - /* words in the object are assumed not to contain */ - /* pointers. */ - /* Returns a conservative approximation in the */ - /* (unlikely) case of insufficient memory to build */ - /* the descriptor. Calls to GC_make_descriptor */ - /* may consume some amount of a finite resource. This */ - /* is intended to be called once per type, not once */ - /* per allocation. */ - -GC_API GC_PTR GC_malloc_explicitly_typed - GC_PROTO((size_t size_in_bytes, GC_descr d)); - /* Allocate an object whose layout is described by d. */ - /* The resulting object MAY NOT BE PASSED TO REALLOC. */ - -GC_API GC_PTR GC_malloc_explicitly_typed_ignore_off_page - GC_PROTO((size_t size_in_bytes, GC_descr d)); - -GC_API GC_PTR GC_calloc_explicitly_typed - GC_PROTO((size_t nelements, - size_t element_size_in_bytes, - GC_descr d)); - /* Allocate an array of nelements elements, each of the */ - /* given size, and with the given descriptor. */ - /* The elemnt size must be a multiple of the byte */ - /* alignment required for pointers. E.g. on a 32-bit */ - /* machine with 16-bit aligned pointers, size_in_bytes */ - /* must be a multiple of 2. */ - -#ifdef GC_DEBUG -# define GC_MALLOC_EXPLICTLY_TYPED(bytes, d) GC_MALLOC(bytes) -# define GC_CALLOC_EXPLICTLY_TYPED(n, bytes, d) GC_MALLOC(n*bytes) -#else -# define GC_MALLOC_EXPLICTLY_TYPED(bytes, d) \ - GC_malloc_explicitly_typed(bytes, d) -# define GC_CALLOC_EXPLICTLY_TYPED(n, bytes, d) \ - GC_calloc_explicitly_typed(n, bytes, d) -#endif /* !GC_DEBUG */ - - -#endif /* _GC_TYPED_H */ - diff --git a/boehm-gc/include/javaxfc.h b/boehm-gc/include/javaxfc.h deleted file mode 100644 index 880020c5363..00000000000 --- a/boehm-gc/include/javaxfc.h +++ /dev/null @@ -1,41 +0,0 @@ -# ifndef GC_H -# include "gc.h" -# endif - -/* - * Invoke all remaining finalizers that haven't yet been run. - * This is needed for strict compliance with the Java standard, - * which can make the runtime guarantee that all finalizers are run. - * This is problematic for several reasons: - * 1) It means that finalizers, and all methods calle by them, - * must be prepared to deal with objects that have been finalized in - * spite of the fact that they are still referenced by statically - * allocated pointer variables. - * 1) It may mean that we get stuck in an infinite loop running - * finalizers which create new finalizable objects, though that's - * probably unlikely. - * Thus this is not recommended for general use. - */ -void GC_finalize_all(); - -/* - * A version of GC_register_finalizer that allows the object to be - * finalized before the objects it references. This is again error - * prone, in that it makes it easy to accidentally reference finalized - * objects. Again, recommended only for JVM implementors. - */ -void GC_register_finalizer_no_order(GC_PTR obj, - GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR * ocd); - -void GC_debug_register_finalizer_no_order(GC_PTR obj, - GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR * ocd); - -#ifdef GC_DEBUG -# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ - GC_debug_register_finalizer_no_order(p, f, d, of, od) -#else -# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ - GC_register_finalizer_no_order(p, f, d, of, od) -#endif diff --git a/boehm-gc/include/leak_detector.h b/boehm-gc/include/leak_detector.h deleted file mode 100644 index 6786825ab6d..00000000000 --- a/boehm-gc/include/leak_detector.h +++ /dev/null @@ -1,7 +0,0 @@ -#define GC_DEBUG -#include "gc.h" -#define malloc(n) GC_MALLOC(n) -#define calloc(m,n) GC_MALLOC(m*n) -#define free(p) GC_FREE(p) -#define realloc(p,n) GC_REALLOC(n) -#define CHECK_LEAKS() GC_gcollect() diff --git a/boehm-gc/include/new_gc_alloc.h b/boehm-gc/include/new_gc_alloc.h deleted file mode 100644 index 54b7bd448d8..00000000000 --- a/boehm-gc/include/new_gc_alloc.h +++ /dev/null @@ -1,452 +0,0 @@ -/* - * Copyright (c) 1996-1998 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -// -// This is a revision of gc_alloc.h for SGI STL versions > 3.0 -// Unlike earlier versions, it supplements the standard "alloc.h" -// instead of replacing it. -// -// This is sloppy about variable names used in header files. -// It also doesn't yet understand the new header file names or -// namespaces. -// -// This assumes the collector has been compiled with -DATOMIC_UNCOLLECTABLE -// and -DALL_INTERIOR_POINTERS. We also recommend -// -DREDIRECT_MALLOC=GC_uncollectable_malloc. -// -// Some of this could be faster in the explicit deallocation case. -// In particular, we spend too much time clearing objects on the -// free lists. That could be avoided. -// -// This uses template classes with static members, and hence does not work -// with g++ 2.7.2 and earlier. -// -// Unlike its predecessor, this one simply defines -// gc_alloc -// single_client_gc_alloc -// traceable_alloc -// single_client_traceable_alloc -// -// It does not redefine alloc. Nor does it change the default allocator, -// though the user may wish to do so. (The argument against changing -// the default allocator is that it may introduce subtle link compatibility -// problems. The argument for changing it is that the usual default -// allocator is usually a very bad choice for a garbage collected environment.) -// - -#ifndef GC_ALLOC_H - -#include "gc.h" -#include <alloc.h> - -#define GC_ALLOC_H - -#include <stddef.h> -#include <string.h> - -// The following need to match collector data structures. -// We can't include gc_priv.h, since that pulls in way too much stuff. -// This should eventually be factored out into another include file. - -extern "C" { - extern void ** const GC_objfreelist_ptr; - extern void ** const GC_aobjfreelist_ptr; - extern void ** const GC_uobjfreelist_ptr; - extern void ** const GC_auobjfreelist_ptr; - - extern void GC_incr_words_allocd(size_t words); - extern void GC_incr_mem_freed(size_t words); - - extern char * GC_generic_malloc_words_small(size_t word, int kind); -} - -// Object kinds; must match PTRFREE, NORMAL, UNCOLLECTABLE, and -// AUNCOLLECTABLE in gc_priv.h. - -enum { GC_PTRFREE = 0, GC_NORMAL = 1, GC_UNCOLLECTABLE = 2, - GC_AUNCOLLECTABLE = 3 }; - -enum { GC_max_fast_bytes = 255 }; - -enum { GC_bytes_per_word = sizeof(char *) }; - -enum { GC_byte_alignment = 8 }; - -enum { GC_word_alignment = GC_byte_alignment/GC_bytes_per_word }; - -inline void * &GC_obj_link(void * p) -{ return *(void **)p; } - -// Compute a number of words >= n+1 bytes. -// The +1 allows for pointers one past the end. -inline size_t GC_round_up(size_t n) -{ - return ((n + GC_byte_alignment)/GC_byte_alignment)*GC_word_alignment; -} - -// The same but don't allow for extra byte. -inline size_t GC_round_up_uncollectable(size_t n) -{ - return ((n + GC_byte_alignment - 1)/GC_byte_alignment)*GC_word_alignment; -} - -template <int dummy> -class GC_aux_template { -public: - // File local count of allocated words. Occasionally this is - // added into the global count. A separate count is necessary since the - // real one must be updated with a procedure call. - static size_t GC_words_recently_allocd; - - // Same for uncollectable mmory. Not yet reflected in either - // GC_words_recently_allocd or GC_non_gc_bytes. - static size_t GC_uncollectable_words_recently_allocd; - - // Similar counter for explicitly deallocated memory. - static size_t GC_mem_recently_freed; - - // Again for uncollectable memory. - static size_t GC_uncollectable_mem_recently_freed; - - static void * GC_out_of_line_malloc(size_t nwords, int kind); -}; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_words_recently_allocd = 0; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_uncollectable_words_recently_allocd = 0; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_mem_recently_freed = 0; - -template <int dummy> -size_t GC_aux_template<dummy>::GC_uncollectable_mem_recently_freed = 0; - -template <int dummy> -void * GC_aux_template<dummy>::GC_out_of_line_malloc(size_t nwords, int kind) -{ - GC_words_recently_allocd += GC_uncollectable_words_recently_allocd; - GC_non_gc_bytes += - GC_bytes_per_word * GC_uncollectable_words_recently_allocd; - GC_uncollectable_words_recently_allocd = 0; - - GC_mem_recently_freed += GC_uncollectable_mem_recently_freed; - GC_non_gc_bytes -= - GC_bytes_per_word * GC_uncollectable_mem_recently_freed; - GC_uncollectable_mem_recently_freed = 0; - - GC_incr_words_allocd(GC_words_recently_allocd); - GC_words_recently_allocd = 0; - - GC_incr_mem_freed(GC_mem_recently_freed); - GC_mem_recently_freed = 0; - - return GC_generic_malloc_words_small(nwords, kind); -} - -typedef GC_aux_template<0> GC_aux; - -// A fast, single-threaded, garbage-collected allocator -// We assume the first word will be immediately overwritten. -// In this version, deallocation is not a noop, and explicit -// deallocation is likely to help performance. -template <int dummy> -class single_client_gc_alloc_template { - public: - static void * allocate(size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc(n); - flh = GC_objfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_NORMAL); - } - *flh = GC_obj_link(op); - GC_aux::GC_words_recently_allocd += nwords; - return op; - } - static void * ptr_free_allocate(size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc_atomic(n); - flh = GC_aobjfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_PTRFREE); - } - *flh = GC_obj_link(op); - GC_aux::GC_words_recently_allocd += nwords; - return op; - } - static void deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_objfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - memset((char *)p + GC_bytes_per_word, 0, - GC_bytes_per_word * (nwords - 1)); - *flh = p; - GC_aux::GC_mem_recently_freed += nwords; - } - } - static void ptr_free_deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_aobjfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - *flh = p; - GC_aux::GC_mem_recently_freed += nwords; - } - } -}; - -typedef single_client_gc_alloc_template<0> single_client_gc_alloc; - -// Once more, for uncollectable objects. -template <int dummy> -class single_client_traceable_alloc_template { - public: - static void * allocate(size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc_uncollectable(n); - flh = GC_uobjfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_UNCOLLECTABLE); - } - *flh = GC_obj_link(op); - GC_aux::GC_uncollectable_words_recently_allocd += nwords; - return op; - } - static void * ptr_free_allocate(size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - void * op; - - if (n > GC_max_fast_bytes) return GC_malloc_atomic_uncollectable(n); - flh = GC_auobjfreelist_ptr + nwords; - if (0 == (op = *flh)) { - return GC_aux::GC_out_of_line_malloc(nwords, GC_AUNCOLLECTABLE); - } - *flh = GC_obj_link(op); - GC_aux::GC_uncollectable_words_recently_allocd += nwords; - return op; - } - static void deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_uobjfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - *flh = p; - GC_aux::GC_uncollectable_mem_recently_freed += nwords; - } - } - static void ptr_free_deallocate(void *p, size_t n) - { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - - if (n > GC_max_fast_bytes) { - GC_free(p); - } else { - flh = GC_auobjfreelist_ptr + nwords; - GC_obj_link(p) = *flh; - *flh = p; - GC_aux::GC_uncollectable_mem_recently_freed += nwords; - } - } -}; - -typedef single_client_traceable_alloc_template<0> single_client_traceable_alloc; - -template < int dummy > -class gc_alloc_template { - public: - static void * allocate(size_t n) { return GC_malloc(n); } - static void * ptr_free_allocate(size_t n) - { return GC_malloc_atomic(n); } - static void deallocate(void *, size_t) { } - static void ptr_free_deallocate(void *, size_t) { } -}; - -typedef gc_alloc_template < 0 > gc_alloc; - -template < int dummy > -class traceable_alloc_template { - public: - static void * allocate(size_t n) { return GC_malloc_uncollectable(n); } - static void * ptr_free_allocate(size_t n) - { return GC_malloc_atomic_uncollectable(n); } - static void deallocate(void *p, size_t) { GC_free(p); } - static void ptr_free_deallocate(void *p, size_t) { GC_free(p); } -}; - -typedef traceable_alloc_template < 0 > traceable_alloc; - -// We want to specialize simple_alloc so that it does the right thing -// for all pointerfree types. At the moment there is no portable way to -// even approximate that. The following approximation should work for -// SGI compilers, and recent versions of g++. - -# define __GC_SPECIALIZE(T,alloc) \ -class simple_alloc<T, alloc> { \ -public: \ - static T *allocate(size_t n) \ - { return 0 == n? 0 : \ - (T*) alloc::ptr_free_allocate(n * sizeof (T)); } \ - static T *allocate(void) \ - { return (T*) alloc::ptr_free_allocate(sizeof (T)); } \ - static void deallocate(T *p, size_t n) \ - { if (0 != n) alloc::ptr_free_deallocate(p, n * sizeof (T)); } \ - static void deallocate(T *p) \ - { alloc::ptr_free_deallocate(p, sizeof (T)); } \ -}; - -__GC_SPECIALIZE(char, gc_alloc) -__GC_SPECIALIZE(int, gc_alloc) -__GC_SPECIALIZE(unsigned, gc_alloc) -__GC_SPECIALIZE(float, gc_alloc) -__GC_SPECIALIZE(double, gc_alloc) - -__GC_SPECIALIZE(char, traceable_alloc) -__GC_SPECIALIZE(int, traceable_alloc) -__GC_SPECIALIZE(unsigned, traceable_alloc) -__GC_SPECIALIZE(float, traceable_alloc) -__GC_SPECIALIZE(double, traceable_alloc) - -__GC_SPECIALIZE(char, single_client_gc_alloc) -__GC_SPECIALIZE(int, single_client_gc_alloc) -__GC_SPECIALIZE(unsigned, single_client_gc_alloc) -__GC_SPECIALIZE(float, single_client_gc_alloc) -__GC_SPECIALIZE(double, single_client_gc_alloc) - -__GC_SPECIALIZE(char, single_client_traceable_alloc) -__GC_SPECIALIZE(int, single_client_traceable_alloc) -__GC_SPECIALIZE(unsigned, single_client_traceable_alloc) -__GC_SPECIALIZE(float, single_client_traceable_alloc) -__GC_SPECIALIZE(double, single_client_traceable_alloc) - -#ifdef __STL_USE_STD_ALLOCATORS - -__STL_BEGIN_NAMESPACE - -template <class _T> -struct _Alloc_traits<_T, gc_alloc > -{ - static const bool _S_instanceless = true; - typedef simple_alloc<_T, gc_alloc > _Alloc_type; - typedef __allocator<_T, gc_alloc > allocator_type; -}; - -inline bool operator==(const gc_alloc&, - const gc_alloc&) -{ - return true; -} - -inline bool operator!=(const gc_alloc&, - const gc_alloc&) -{ - return false; -} - -template <class _T> -struct _Alloc_traits<_T, single_client_gc_alloc > -{ - static const bool _S_instanceless = true; - typedef simple_alloc<_T, single_client_gc_alloc > _Alloc_type; - typedef __allocator<_T, single_client_gc_alloc > allocator_type; -}; - -inline bool operator==(const single_client_gc_alloc&, - const single_client_gc_alloc&) -{ - return true; -} - -inline bool operator!=(const single_client_gc_alloc&, - const single_client_gc_alloc&) -{ - return false; -} - -template <class _T> -struct _Alloc_traits<_T, traceable_alloc > -{ - static const bool _S_instanceless = true; - typedef simple_alloc<_T, traceable_alloc > _Alloc_type; - typedef __allocator<_T, traceable_alloc > allocator_type; -}; - -inline bool operator==(const traceable_alloc&, - const traceable_alloc&) -{ - return true; -} - -inline bool operator!=(const traceable_alloc&, - const traceable_alloc&) -{ - return false; -} - -template <class _T> -struct _Alloc_traits<_T, single_client_traceable_alloc > -{ - static const bool _S_instanceless = true; - typedef simple_alloc<_T, single_client_traceable_alloc > _Alloc_type; - typedef __allocator<_T, single_client_traceable_alloc > allocator_type; -}; - -inline bool operator==(const single_client_traceable_alloc&, - const single_client_traceable_alloc&) -{ - return true; -} - -inline bool operator!=(const single_client_traceable_alloc&, - const single_client_traceable_alloc&) -{ - return false; -} - -__STL_END_NAMESPACE - -#endif /* __STL_USE_STD_ALLOCATORS */ - -#endif /* GC_ALLOC_H */ diff --git a/boehm-gc/include/private/config.h b/boehm-gc/include/private/config.h deleted file mode 100644 index fc8004cebe5..00000000000 --- a/boehm-gc/include/private/config.h +++ /dev/null @@ -1,965 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. - * Copyright (c) 1996 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -#ifndef CONFIG_H - -# define CONFIG_H - -/* Machine dependent parameters. Some tuning parameters can be found */ -/* near the top of gc_private.h. */ - -/* Machine specific parts contributed by various people. See README file. */ - -/* Determine the machine type: */ -# if defined(sun) && defined(mc68000) -# define M68K -# define SUNOS4 -# define mach_type_known -# endif -# if defined(hp9000s300) -# define M68K -# define HP -# define mach_type_known -# endif -# if defined(__NetBSD__) && defined(m68k) -# define M68K -# define NETBSD -# define mach_type_known -# endif -# if defined(vax) -# define VAX -# ifdef ultrix -# define ULTRIX -# else -# define BSD -# endif -# define mach_type_known -# endif -# if defined(mips) || defined(__mips) -# define MIPS -# if defined(ultrix) || defined(__ultrix) || defined(__NetBSD__) -# define ULTRIX -# else -# if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) || defined(__SYSTYPE_SVR4__) -# define IRIX5 /* or IRIX 6.X */ -# else -# define RISCOS /* or IRIX 4.X */ -# endif -# endif -# define mach_type_known -# endif -# if defined(sequent) && defined(i386) -# define I386 -# define SEQUENT -# define mach_type_known -# endif -# if defined(sun) && defined(i386) -# define I386 -# define SUNOS5 -# define mach_type_known -# endif -# if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__) -# define I386 -# define OS2 -# define mach_type_known -# endif -# if defined(ibm032) -# define RT -# define mach_type_known -# endif -# if defined(sun) && (defined(sparc) || defined(__sparc)) -# define SPARC - /* Test for SunOS 5.x */ -# include <errno.h> -# ifdef ECHRNG -# define SUNOS5 -# else -# define SUNOS4 -# endif -# define mach_type_known -# endif -# if defined(sparc) && defined(unix) && !defined(sun) -# define SPARC -# define DRSNX -# define mach_type_known -# endif -# if defined(_IBMR2) -# define RS6000 -# define mach_type_known -# endif -# if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386) - /* The above test may need refinement */ -# define I386 -# if defined(_SCO_ELF) -# define SCO_ELF -# else -# define SCO -# endif -# define mach_type_known -# endif -# if defined(_AUX_SOURCE) -# define M68K -# define SYSV -# define mach_type_known -# endif -# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) -# define HP_PA -# define mach_type_known -# endif -# if defined(linux) && defined(i386) -# define I386 -# define LINUX -# define mach_type_known -# endif -# if defined(linux) && defined(powerpc) -# define POWERPC -# define LINUX -# define mach_type_known -# endif -# if defined(__alpha) || defined(__alpha__) -# define ALPHA -# if defined(linux) || defined(__linux__) -# define LINUX -# else -# define OSF1 /* a.k.a Digital Unix */ -# endif -# define mach_type_known -# endif -# if defined(_AMIGA) -# define M68K -# define AMIGA -# define mach_type_known -# endif -# if defined(THINK_C) || defined(__MWERKS__) && !defined(__powerc) -# define M68K -# define MACOS -# define mach_type_known -# endif -# if defined(__MWERKS__) && defined(__powerc) -# define POWERPC -# define MACOS -# define mach_type_known -# endif -# if defined(NeXT) && defined(mc68000) -# define M68K -# define NEXT -# define mach_type_known -# endif -# if defined(NeXT) && defined(i386) -# define I386 -# define NEXT -# define mach_type_known -# endif -# if defined(__FreeBSD__) && defined(i386) -# define I386 -# define FREEBSD -# define mach_type_known -# endif -# if defined(__NetBSD__) && defined(i386) -# define I386 -# define NETBSD -# define mach_type_known -# endif -# if defined(bsdi) && defined(i386) -# define I386 -# define BSDI -# define mach_type_known -# endif -# if !defined(mach_type_known) && defined(__386BSD__) -# define I386 -# define THREE86BSD -# define mach_type_known -# endif -# if defined(_CX_UX) && defined(_M88K) -# define M88K -# define CX_UX -# define mach_type_known -# endif -# if defined(DGUX) -# define M88K - /* DGUX defined */ -# define mach_type_known -# endif -# if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) -# define I386 -# define MSWIN32 /* or Win32s */ -# define mach_type_known -# endif -# if defined(__DJGPP__) -# define I386 -# ifndef DJGPP -# define DJGPP /* MSDOS running the DJGPP port of GCC */ -# endif -# define mach_type_known -# endif -# if defined(__CYGWIN32__) -# define I386 -# define CYGWIN32 -# define mach_type_known -# endif -# if defined(__BORLANDC__) -# define I386 -# define MSWIN32 -# define mach_type_known -# endif -# if defined(_UTS) && !defined(mach_type_known) -# define S370 -# define UTS4 -# define mach_type_known -# endif -/* Ivan Demakov */ -# if defined(__WATCOMC__) && defined(__386__) -# define I386 -# if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW) -# if defined(__OS2__) -# define OS2 -# else -# if defined(__WINDOWS_386__) || defined(__NT__) -# define MSWIN32 -# else -# define DOS4GW -# endif -# endif -# endif -# define mach_type_known -# endif - -/* Feel free to add more clauses here */ - -/* Or manually define the machine type here. A machine type is */ -/* characterized by the architecture. Some */ -/* machine types are further subdivided by OS. */ -/* the macros ULTRIX, RISCOS, and BSD to distinguish. */ -/* Note that SGI IRIX is treated identically to RISCOS. */ -/* SYSV on an M68K actually means A/UX. */ -/* The distinction in these cases is usually the stack starting address */ -# ifndef mach_type_known - --> unknown machine type -# endif - /* Mapping is: M68K ==> Motorola 680X0 */ - /* (SUNOS4,HP,NEXT, and SYSV (A/UX), */ - /* MACOS and AMIGA variants) */ - /* I386 ==> Intel 386 */ - /* (SEQUENT, OS2, SCO, LINUX, NETBSD, */ - /* FREEBSD, THREE86BSD, MSWIN32, */ - /* BSDI, SUNOS5, NEXT variants) */ - /* NS32K ==> Encore Multimax */ - /* MIPS ==> R2000 or R3000 */ - /* (RISCOS, ULTRIX variants) */ - /* VAX ==> DEC VAX */ - /* (BSD, ULTRIX variants) */ - /* RS6000 ==> IBM RS/6000 AIX3.X */ - /* RT ==> IBM PC/RT */ - /* HP_PA ==> HP9000/700 & /800 */ - /* HP/UX */ - /* SPARC ==> SPARC under SunOS */ - /* (SUNOS4, SUNOS5, */ - /* DRSNX variants) */ - /* ALPHA ==> DEC Alpha */ - /* (OSF1 and LINUX variants) */ - /* M88K ==> Motorola 88XX0 */ - /* (CX_UX and DGUX) */ - /* S370 ==> 370-like machine */ - /* running Amdahl UTS4 */ - - -/* - * For each architecture and OS, the following need to be defined: - * - * CPP_WORD_SZ is a simple integer constant representing the word size. - * in bits. We assume byte addressibility, where a byte has 8 bits. - * We also assume CPP_WORD_SZ is either 32 or 64. - * (We care about the length of pointers, not hardware - * bus widths. Thus a 64 bit processor with a C compiler that uses - * 32 bit pointers should use CPP_WORD_SZ of 32, not 64. Default is 32.) - * - * MACH_TYPE is a string representation of the machine type. - * OS_TYPE is analogous for the OS. - * - * ALIGNMENT is the largest N, such that - * all pointer are guaranteed to be aligned on N byte boundaries. - * defining it to be 1 will always work, but perform poorly. - * - * DATASTART is the beginning of the data segment. - * On UNIX systems, the collector will scan the area between DATASTART - * and DATAEND for root pointers. - * - * DATAEND, if not &end. - * - * ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice - * the pointer size. - * - * STACKBOTTOM is the cool end of the stack, which is usually the - * highest address in the stack. - * Under PCR or OS/2, we have other ways of finding thread stacks. - * For each machine, the following should: - * 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and - * 2) define exactly one of - * STACKBOTTOM (should be defined to be an expression) - * HEURISTIC1 - * HEURISTIC2 - * If either of the last two macros are defined, then STACKBOTTOM is computed - * during collector startup using one of the following two heuristics: - * HEURISTIC1: Take an address inside GC_init's frame, and round it up to - * the next multiple of STACK_GRAN. - * HEURISTIC2: Take an address inside GC_init's frame, increment it repeatedly - * in small steps (decrement if STACK_GROWS_UP), and read the value - * at each location. Remember the value when the first - * Segmentation violation or Bus error is signalled. Round that - * to the nearest plausible page boundary, and use that instead - * of STACKBOTTOM. - * - * If no expression for STACKBOTTOM can be found, and neither of the above - * heuristics are usable, the collector can still be used with all of the above - * undefined, provided one of the following is done: - * 1) GC_mark_roots can be changed to somehow mark from the correct stack(s) - * without reference to STACKBOTTOM. This is appropriate for use in - * conjunction with thread packages, since there will be multiple stacks. - * (Allocating thread stacks in the heap, and treating them as ordinary - * heap data objects is also possible as a last resort. However, this is - * likely to introduce significant amounts of excess storage retention - * unless the dead parts of the thread stacks are periodically cleared.) - * 2) Client code may set GC_stackbottom before calling any GC_ routines. - * If the author of the client code controls the main program, this is - * easily accomplished by introducing a new main program, setting - * GC_stackbottom to the address of a local variable, and then calling - * the original main program. The new main program would read something - * like: - * - * # include "gc_private.h" - * - * main(argc, argv, envp) - * int argc; - * char **argv, **envp; - * { - * int dummy; - * - * GC_stackbottom = (ptr_t)(&dummy); - * return(real_main(argc, argv, envp)); - * } - * - * - * Each architecture may also define the style of virtual dirty bit - * implementation to be used: - * MPROTECT_VDB: Write protect the heap and catch faults. - * PROC_VDB: Use the SVR4 /proc primitives to read dirty bits. - * - * An architecture may define DYNAMIC_LOADING if dynamic_load.c - * defined GC_register_dynamic_libraries() for the architecture. - */ - - -# define STACK_GRAN 0x1000000 -# ifdef M68K -# define MACH_TYPE "M68K" -# define ALIGNMENT 2 -# ifdef NETBSD -# define OS_TYPE "NETBSD" -# define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# endif -# ifdef SUNOS4 -# define OS_TYPE "SUNOS4" - extern char etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ffff) & ~0x1ffff)) -# define HEURISTIC1 /* differs */ -# define DYNAMIC_LOADING -# endif -# ifdef HP -# define OS_TYPE "HP" - extern char etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# define STACKBOTTOM ((ptr_t) 0xffeffffc) - /* empirically determined. seems to work. */ -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) -# endif -# ifdef SYSV -# define OS_TYPE "SYSV" - extern etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \ - & ~0x3fffff) \ - +((word)&etext & 0x1fff)) - /* This only works for shared-text binaries with magic number 0413. - The other sorts of SysV binaries put the data at the end of the text, - in which case the default of &etext would work. Unfortunately, - handling both would require having the magic-number available. - -- Parag - */ -# define STACKBOTTOM ((ptr_t)0xFFFFFFFE) - /* The stack starts at the top of memory, but */ - /* 0x0 cannot be used as setjump_test complains */ - /* that the stack direction is incorrect. Two */ - /* bytes down from 0x0 should be safe enough. */ - /* --Parag */ -# include <sys/mmu.h> -# define GETPAGESIZE() PAGESIZE /* Is this still right? */ -# endif -# ifdef AMIGA -# define OS_TYPE "AMIGA" - /* STACKBOTTOM and DATASTART handled specially */ - /* in os_dep.c */ -# define DATAEND /* not needed */ -# define GETPAGESIZE() 4096 -# endif -# ifdef MACOS -# ifndef __LOWMEM__ -# include <LowMem.h> -# endif -# define OS_TYPE "MACOS" - /* see os_dep.c for details of global data segments. */ -# define STACKBOTTOM ((ptr_t) LMGetCurStackBase()) -# define DATAEND /* not needed */ -# define GETPAGESIZE() 4096 -# endif -# ifdef NEXT -# define OS_TYPE "NEXT" -# define DATASTART ((ptr_t) get_etext()) -# define STACKBOTTOM ((ptr_t) 0x4000000) -# define DATAEND /* not needed */ -# endif -# endif - -# ifdef POWERPC -# define MACH_TYPE "POWERPC" -# define ALIGNMENT 2 -# ifdef MACOS -# ifndef __LOWMEM__ -# include <LowMem.h> -# endif -# define OS_TYPE "MACOS" - /* see os_dep.c for details of global data segments. */ -# define STACKBOTTOM ((ptr_t) LMGetCurStackBase()) -# define DATAEND /* not needed */ -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# define STACKBOTTOM ((ptr_t)0x80000000) -# define DATASTART GC_data_start - extern int _end; -# define DATAEND (&_end) -# endif -# endif - -# ifdef VAX -# define MACH_TYPE "VAX" -# define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */ - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# ifdef BSD -# define OS_TYPE "BSD" -# define HEURISTIC1 - /* HEURISTIC2 may be OK, but it's hard to test. */ -# endif -# ifdef ULTRIX -# define OS_TYPE "ULTRIX" -# define STACKBOTTOM ((ptr_t) 0x7fffc800) -# endif -# endif - -# ifdef RT -# define MACH_TYPE "RT" -# define ALIGNMENT 4 -# define DATASTART ((ptr_t) 0x10000000) -# define STACKBOTTOM ((ptr_t) 0x1fffd800) -# endif - -# ifdef SPARC -# define MACH_TYPE "SPARC" -# define ALIGNMENT 4 /* Required by hardware */ -# define ALIGN_DOUBLE - extern int etext; -# ifdef SUNOS5 -# define OS_TYPE "SUNOS5" - extern int _etext; - extern int _end; - extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) -# define DATAEND (&_end) -# ifndef USE_MMAP -# define USE_MMAP -# endif -# ifdef USE_MMAP -# define HEAP_START (ptr_t)0x40000000 -# else -# define HEAP_START DATAEND -# endif -# define PROC_VDB -# define HEURISTIC1 -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGESIZE) - /* getpagesize() appeared to be missing from at least one */ - /* Solaris 5.4 installation. Weird. */ -# endif -# ifdef SUNOS4 -# define OS_TYPE "SUNOS4" - /* [If you have a weak stomach, don't read this.] */ - /* We would like to use: */ -/* # define DATASTART ((ptr_t)((((word) (&etext)) + 0x1fff) & ~0x1fff)) */ - /* This fails occasionally, due to an ancient, but very */ - /* persistent ld bug. &etext is set 32 bytes too high. */ - /* We instead read the text segment size from the a.out */ - /* header, which happens to be mapped into our address space */ - /* at the start of the text segment. The detective work here */ - /* was done by Robert Ehrlich, Manuel Serrano, and Bernard */ - /* Serpette of INRIA. */ - /* This assumes ZMAGIC, i.e. demand-loadable executables. */ -# define TEXTSTART 0x2000 -# define DATASTART ((ptr_t)(*(int *)(TEXTSTART+0x4)+TEXTSTART)) -# define MPROTECT_VDB -# define HEURISTIC1 -# endif -# ifdef DRSNX -# define CPP_WORDSZ 32 -# define OS_TYPE "DRSNX" - extern char * GC_SysVGetDataStart(); - extern int etext; -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext) -# define MPROTECT_VDB -# define STACKBOTTOM ((ptr_t) 0xdfff0000) -# endif -# define DYNAMIC_LOADING -# endif - -# ifdef I386 -# define MACH_TYPE "I386" -# define ALIGNMENT 4 /* Appears to hold for all "32 bit" compilers */ - /* except Borland. The -a4 option fixes */ - /* Borland. */ - /* Ivan Demakov: For Watcom the option is -zp4. */ -# ifndef SMALL_CONFIG -# define ALIGN_DOUBLE /* Not strictly necessary, but may give speed */ - /* improvement on Pentiums. */ -# endif -# ifdef SEQUENT -# define OS_TYPE "SEQUENT" - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# define STACKBOTTOM ((ptr_t) 0x3ffff000) -# endif -# ifdef SUNOS5 -# define OS_TYPE "SUNOS5" - extern int etext, _start; - extern char * GC_SysVGetDataStart(); -# define DATASTART GC_SysVGetDataStart(0x1000, &etext) -# define STACKBOTTOM ((ptr_t)(&_start)) -/** At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */ -/*# define PROC_VDB*/ -# define DYNAMIC_LOADING -# ifndef USE_MMAP -# define USE_MMAP -# endif -# ifdef USE_MMAP -# define HEAP_START (ptr_t)0x40000000 -# else -# define HEAP_START DATAEND -# endif -# endif -# ifdef SCO -# define OS_TYPE "SCO" - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \ - & ~0x3fffff) \ - +((word)&etext & 0xfff)) -# define STACKBOTTOM ((ptr_t) 0x7ffffffc) -# endif -# ifdef SCO_ELF -# define OS_TYPE "SCO_ELF" - extern int etext; -# define DATASTART ((ptr_t)(&etext)) -# define STACKBOTTOM ((ptr_t) 0x08048000) -# define DYNAMIC_LOADING -# define ELF_CLASS ELFCLASS32 -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# define STACKBOTTOM ((ptr_t)0xc0000000) - /* Appears to be 0xe0000000 for at least one 2.1.91 kernel. */ - /* Probably needs to be more flexible, but I don't yet */ - /* fully understand how flexible. */ -# define MPROTECT_VDB -# ifdef __ELF__ -# define DYNAMIC_LOADING -# ifdef UNDEFINED /* includes ro data */ - extern int _etext; -# define DATASTART ((ptr_t)((((word) (&_etext)) + 0xfff) & ~0xfff)) -# endif -# include <linux/version.h> -# include <features.h> -# if LINUX_VERSION_CODE >= 0x20000 && defined(__GLIBC__) && __GLIBC__ >= 2 - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) -# else - extern char **__environ; -# define DATASTART ((ptr_t)(&__environ)) - /* hideous kludge: __environ is the first */ - /* word in crt0.o, and delimits the start */ - /* of the data segment, no matter which */ - /* ld options were passed through. */ - /* We could use _etext instead, but that */ - /* would include .rodata, which may */ - /* contain large read-only data tables */ - /* that we'd rather not scan. */ -# endif - extern int _end; -# define DATAEND (&_end) -# else - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# endif -# endif -# ifdef CYGWIN32 - extern int _data_start__; - extern int _data_end__; - extern int _bss_start__; - extern int _bss_end__; - /* For binutils 2.9.1, we have */ - /* DATASTART = _data_start__ */ - /* DATAEND = _bss_end__ */ - /* whereas for some earlier versions it was */ - /* DATASTART = _bss_start__ */ - /* DATAEND = _data_end__ */ - /* To get it right for both, we take the */ - /* minumum/maximum of the two. */ -# define MAX(x,y) ((x) > (y) ? (x) : (y)) -# define MIN(x,y) ((x) < (y) ? (x) : (y)) -# define DATASTART ((ptr_t) MIN(_data_start__, _bss_start__)) -# define DATAEND ((ptr_t) MAX(_data_end__, _bss_end__)) -# undef STACK_GRAN -# define STACK_GRAN 0x10000 -# define HEURISTIC1 -# endif -# ifdef OS2 -# define OS_TYPE "OS2" - /* STACKBOTTOM and DATASTART are handled specially in */ - /* os_dep.c. OS2 actually has the right */ - /* system call! */ -# define DATAEND /* not needed */ -# endif -# ifdef MSWIN32 -# define OS_TYPE "MSWIN32" - /* STACKBOTTOM and DATASTART are handled specially in */ - /* os_dep.c. */ -# ifndef __WATCOMC__ -# define MPROTECT_VDB -# endif -# define DATAEND /* not needed */ -# endif -# ifdef DJGPP -# define OS_TYPE "DJGPP" -# include "stubinfo.h" - extern int etext; - extern int _stklen; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ff) & ~0x1ff)) -# define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \ - + _stklen)) - /* This may not be right. */ -# endif -# ifdef FREEBSD -# define OS_TYPE "FREEBSD" -# define MPROTECT_VDB -# endif -# ifdef NETBSD -# define OS_TYPE "NETBSD" -# endif -# ifdef THREE86BSD -# define OS_TYPE "THREE86BSD" -# endif -# ifdef BSDI -# define OS_TYPE "BSDI" -# endif -# if defined(FREEBSD) || defined(NETBSD) \ - || defined(THREE86BSD) || defined(BSDI) -# define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# endif -# ifdef NEXT -# define OS_TYPE "NEXT" -# define DATASTART ((ptr_t) get_etext()) -# define STACKBOTTOM ((ptr_t)0xc0000000) -# define DATAEND /* not needed */ -# endif -# ifdef DOS4GW -# define OS_TYPE "DOS4GW" - /* Get_DATASTART, Get_DATAEND, Get_STACKBOTTOM - * Defined in gc-watcom.asm - */ - extern char* Get_DATASTART (void); - extern char* Get_DATAEND (void); - extern char* Get_STACKBOTTOM (void); -# pragma aux Get_DATASTART "*" value [eax]; -# pragma aux Get_DATAEND "*" value [eax]; -# pragma aux Get_STACKBOTTOM "*" value [eax]; -# define DATASTART ((ptr_t) Get_DATASTART()) -# define STACKBOTTOM ((ptr_t) Get_STACKBOTTOM()) -# define DATAEND ((ptr_t) Get_DATAEND()) -# endif -# endif - -# ifdef NS32K -# define MACH_TYPE "NS32K" -# define ALIGNMENT 4 - extern char **environ; -# define DATASTART ((ptr_t)(&environ)) - /* hideous kludge: environ is the first */ - /* word in crt0.o, and delimits the start */ - /* of the data segment, no matter which */ - /* ld options were passed through. */ -# define STACKBOTTOM ((ptr_t) 0xfffff000) /* for Encore */ -# endif - -# ifdef MIPS -# define MACH_TYPE "MIPS" -# ifndef IRIX5 -# define DATASTART (ptr_t)0x10000000 - /* Could probably be slightly higher since */ - /* startup code allocates lots of stuff. */ -# else - extern int _fdata; -# define DATASTART ((ptr_t)(&_fdata)) -# ifdef USE_MMAP -# define HEAP_START (ptr_t)0x30000000 -# else -# define HEAP_START DATASTART -# endif - /* Lowest plausible heap address. */ - /* In the MMAP case, we map there. */ - /* In either case it is used to identify */ - /* heap sections so they're not */ - /* considered as roots. */ -# endif /* IRIX5 */ -# define HEURISTIC2 -/* # define STACKBOTTOM ((ptr_t)0x7fff8000) sometimes also works. */ -# ifdef ULTRIX -# define OS_TYPE "ULTRIX" -# define ALIGNMENT 4 -# endif -# ifdef RISCOS -# define OS_TYPE "RISCOS" -# define ALIGNMENT 4 /* Required by hardware */ -# endif -# ifdef IRIX5 -# define OS_TYPE "IRIX5" -# define MPROTECT_VDB -# ifdef _MIPS_SZPTR -# define CPP_WORDSZ _MIPS_SZPTR -# define ALIGNMENT (_MIPS_SZPTR/8) -# if CPP_WORDSZ != 64 -# define ALIGN_DOUBLE -# endif -# else -# define ALIGNMENT 4 -# define ALIGN_DOUBLE -# endif -# define DYNAMIC_LOADING -# endif -# endif - -# ifdef RS6000 -# define MACH_TYPE "RS6000" -# define ALIGNMENT 4 -# define DATASTART ((ptr_t)0x20000000) - extern int errno; -# define STACKBOTTOM ((ptr_t)((ulong)&errno)) -# define DYNAMIC_LOADING - /* For really old versions of AIX, this may have to be removed. */ -# endif - -# ifdef HP_PA -# define MACH_TYPE "HP_PA" -# define ALIGNMENT 4 -# define ALIGN_DOUBLE - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) -# if 0 - /* The following appears to work for 7xx systems running HP/UX */ - /* 9.xx Furthermore, it might result in much faster */ - /* collections than HEURISTIC2, which may involve scanning */ - /* segments that directly precede the stack. It is not the */ - /* default, since it may not work on older machine/OS */ - /* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */ - /* this.) */ -# define STACKBOTTOM ((ptr_t) 0x7b033000) /* from /etc/conf/h/param.h */ -# else -# define HEURISTIC2 -# endif -# define STACK_GROWS_UP -# define DYNAMIC_LOADING -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) - /* They misspelled the Posix macro? */ -# endif - -# ifdef ALPHA -# define MACH_TYPE "ALPHA" -# define ALIGNMENT 8 -# ifdef OSF1 -# define OS_TYPE "OSF1" -# define DATASTART ((ptr_t) 0x140000000) -# define HEURISTIC2 - /* Normally HEURISTIC2 is too conervative, since */ - /* the text segment immediately follows the stack. */ - /* Hence we give an upper pound. */ - extern __start; -# define HEURISTIC2_LIMIT ((ptr_t)((word)(&__start) & ~(getpagesize()-1))) -# define CPP_WORDSZ 64 -# define MPROTECT_VDB -# define DYNAMIC_LOADING -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# define CPP_WORDSZ 64 -# define STACKBOTTOM ((ptr_t) 0x120000000) -# ifdef __ELF__ - extern int __data_start; -# define DATASTART &__data_start -# define DYNAMIC_LOADING -# else -# define DATASTART ((ptr_t) 0x140000000) -# endif - extern int _end; -# define DATAEND (&_end) - /* As of 1.3.90, I couldn't find a way to retrieve the correct */ - /* fault address from a signal handler. */ - /* Hence MPROTECT_VDB is broken. */ -# endif -# endif - -# ifdef M88K -# define MACH_TYPE "M88K" -# define ALIGNMENT 4 -# define ALIGN_DOUBLE - extern int etext; -# ifdef CX_UX -# define OS_TYPE "CX_UX" -# define DATASTART ((((word)&etext + 0x3fffff) & ~0x3fffff) + 0x10000) -# endif -# ifdef DGUX -# define OS_TYPE "DGUX" - extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext) -# endif -# define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */ -# endif - -# ifdef S370 -# define MACH_TYPE "S370" -# define OS_TYPE "UTS4" -# define ALIGNMENT 4 /* Required by hardware */ - extern int etext; - extern int _etext; - extern int _end; - extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) -# define DATAEND (&_end) -# define HEURISTIC2 -# endif - -# ifndef STACK_GROWS_UP -# define STACK_GROWS_DOWN -# endif - -# ifndef CPP_WORDSZ -# define CPP_WORDSZ 32 -# endif - -# ifndef OS_TYPE -# define OS_TYPE "" -# endif - -# ifndef DATAEND - extern int end; -# define DATAEND (&end) -# endif - -# if defined(SVR4) && !defined(GETPAGESIZE) -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGESIZE) -# endif - -# ifndef GETPAGESIZE -# if defined(SUNOS5) || defined(IRIX5) -# include <unistd.h> -# endif -# define GETPAGESIZE() getpagesize() -# endif - -# if defined(SUNOS5) || defined(DRSNX) || defined(UTS4) - /* OS has SVR4 generic features. Probably others also qualify. */ -# define SVR4 -# endif - -# if defined(SUNOS5) || defined(DRSNX) - /* OS has SUNOS5 style semi-undocumented interface to dynamic */ - /* loader. */ -# define SUNOS5DL - /* OS has SUNOS5 style signal handlers. */ -# define SUNOS5SIGS -# endif - -# if CPP_WORDSZ != 32 && CPP_WORDSZ != 64 - -> bad word size -# endif - -# ifdef PCR -# undef DYNAMIC_LOADING -# undef STACKBOTTOM -# undef HEURISTIC1 -# undef HEURISTIC2 -# undef PROC_VDB -# undef MPROTECT_VDB -# define PCR_VDB -# endif - -# ifdef SRC_M3 -/* Postponed for now. */ -# undef PROC_VDB -# undef MPROTECT_VDB -# endif - -# ifdef SMALL_CONFIG -/* Presumably not worth the space it takes. */ -# undef PROC_VDB -# undef MPROTECT_VDB -# endif - -# if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB) -# define DEFAULT_VDB -# endif - -# if defined(IRIX_THREADS) && !defined(IRIX5) ---> inconsistent configuration -# endif -# if defined(LINUX_THREADS) && !defined(LINUX) ---> inconsistent configuration -# endif -# if defined(SOLARIS_THREADS) && !defined(SUNOS5) ---> inconsistent configuration -# endif -# if defined(PCR) || defined(SRC_M3) || \ - defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \ - defined(IRIX_THREADS) || defined(LINUX_THREADS) -# define THREADS -# endif - -# if defined(SPARC) -# define SAVE_CALL_CHAIN -# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ - /* include assembly code to do it well. */ -# endif - -# endif diff --git a/boehm-gc/include/private/cord_pos.h b/boehm-gc/include/private/cord_pos.h deleted file mode 100644 index d2b24bb8ab6..00000000000 --- a/boehm-gc/include/private/cord_pos.h +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* Boehm, May 19, 1994 2:23 pm PDT */ -# ifndef CORD_POSITION_H - -/* The representation of CORD_position. This is private to the */ -/* implementation, but the size is known to clients. Also */ -/* the implementation of some exported macros relies on it. */ -/* Don't use anything defined here and not in cord.h. */ - -# define MAX_DEPTH 48 - /* The maximum depth of a balanced cord + 1. */ - /* We don't let cords get deeper than MAX_DEPTH. */ - -struct CORD_pe { - CORD pe_cord; - size_t pe_start_pos; -}; - -/* A structure describing an entry on the path from the root */ -/* to current position. */ -typedef struct CORD_Pos { - size_t cur_pos; - int path_len; -# define CORD_POS_INVALID (0x55555555) - /* path_len == INVALID <==> position invalid */ - const char *cur_leaf; /* Current leaf, if it is a string. */ - /* If the current leaf is a function, */ - /* then this may point to function_buf */ - /* containing the next few characters. */ - /* Always points to a valid string */ - /* containing the current character */ - /* unless cur_end is 0. */ - size_t cur_start; /* Start position of cur_leaf */ - size_t cur_end; /* Ending position of cur_leaf */ - /* 0 if cur_leaf is invalid. */ - struct CORD_pe path[MAX_DEPTH + 1]; - /* path[path_len] is the leaf corresponding to cur_pos */ - /* path[0].pe_cord is the cord we point to. */ -# define FUNCTION_BUF_SZ 8 - char function_buf[FUNCTION_BUF_SZ]; /* Space for next few chars */ - /* from function node. */ -} CORD_pos[1]; - -/* Extract the cord from a position: */ -CORD CORD_pos_to_cord(CORD_pos p); - -/* Extract the current index from a position: */ -size_t CORD_pos_to_index(CORD_pos p); - -/* Fetch the character located at the given position: */ -char CORD_pos_fetch(CORD_pos p); - -/* Initialize the position to refer to the give cord and index. */ -/* Note that this is the most expensive function on positions: */ -void CORD_set_pos(CORD_pos p, CORD x, size_t i); - -/* Advance the position to the next character. */ -/* P must be initialized and valid. */ -/* Invalidates p if past end: */ -void CORD_next(CORD_pos p); - -/* Move the position to the preceding character. */ -/* P must be initialized and valid. */ -/* Invalidates p if past beginning: */ -void CORD_prev(CORD_pos p); - -/* Is the position valid, i.e. inside the cord? */ -int CORD_pos_valid(CORD_pos p); - -char CORD__pos_fetch(CORD_pos); -void CORD__next(CORD_pos); -void CORD__prev(CORD_pos); - -#define CORD_pos_fetch(p) \ - (((p)[0].cur_end != 0)? \ - (p)[0].cur_leaf[(p)[0].cur_pos - (p)[0].cur_start] \ - : CORD__pos_fetch(p)) - -#define CORD_next(p) \ - (((p)[0].cur_pos + 1 < (p)[0].cur_end)? \ - (p)[0].cur_pos++ \ - : (CORD__next(p), 0)) - -#define CORD_prev(p) \ - (((p)[0].cur_end != 0 && (p)[0].cur_pos > (p)[0].cur_start)? \ - (p)[0].cur_pos-- \ - : (CORD__prev(p), 0)) - -#define CORD_pos_to_index(p) ((p)[0].cur_pos) - -#define CORD_pos_to_cord(p) ((p)[0].path[0].pe_cord) - -#define CORD_pos_valid(p) ((p)[0].path_len != CORD_POS_INVALID) - -/* Some grubby stuff for performance-critical friends: */ -#define CORD_pos_chars_left(p) ((long)((p)[0].cur_end) - (long)((p)[0].cur_pos)) - /* Number of characters in cache. <= 0 ==> none */ - -#define CORD_pos_advance(p,n) ((p)[0].cur_pos += (n) - 1, CORD_next(p)) - /* Advance position by n characters */ - /* 0 < n < CORD_pos_chars_left(p) */ - -#define CORD_pos_cur_char_addr(p) \ - (p)[0].cur_leaf + ((p)[0].cur_pos - (p)[0].cur_start) - /* address of current character in cache. */ - -#endif diff --git a/boehm-gc/include/private/gc_hdrs.h b/boehm-gc/include/private/gc_hdrs.h deleted file mode 100644 index 60dc2ad37d6..00000000000 --- a/boehm-gc/include/private/gc_hdrs.h +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* Boehm, July 11, 1995 11:54 am PDT */ -# ifndef GC_HEADERS_H -# define GC_HEADERS_H -typedef struct hblkhdr hdr; - -# if CPP_WORDSZ != 32 && CPP_WORDSZ < 36 - --> Get a real machine. -# endif - -/* - * The 2 level tree data structure that is used to find block headers. - * If there are more than 32 bits in a pointer, the top level is a hash - * table. - */ - -# if CPP_WORDSZ > 32 -# define HASH_TL -# endif - -/* Define appropriate out-degrees for each of the two tree levels */ -# ifdef SMALL_CONFIG -# define LOG_BOTTOM_SZ 11 - /* Keep top index size reasonable with smaller blocks. */ -# else -# define LOG_BOTTOM_SZ 10 -# endif -# ifndef HASH_TL -# define LOG_TOP_SZ (WORDSZ - LOG_BOTTOM_SZ - LOG_HBLKSIZE) -# else -# define LOG_TOP_SZ 11 -# endif -# define TOP_SZ (1 << LOG_TOP_SZ) -# define BOTTOM_SZ (1 << LOG_BOTTOM_SZ) - -typedef struct bi { - hdr * index[BOTTOM_SZ]; - /* - * The bottom level index contains one of three kinds of values: - * 0 means we're not responsible for this block, - * or this is a block other than the first one in a free block. - * 1 < (long)X <= MAX_JUMP means the block starts at least - * X * HBLKSIZE bytes before the current address. - * A valid pointer points to a hdr structure. (The above can't be - * valid pointers due to the GET_MEM return convention.) - */ - struct bi * asc_link; /* All indices are linked in */ - /* ascending order... */ - struct bi * desc_link; /* ... and in descending order. */ - word key; /* high order address bits. */ -# ifdef HASH_TL - struct bi * hash_link; /* Hash chain link. */ -# endif -} bottom_index; - -/* extern bottom_index GC_all_nils; - really part of GC_arrays */ - -/* extern bottom_index * GC_top_index []; - really part of GC_arrays */ - /* Each entry points to a bottom_index. */ - /* On a 32 bit machine, it points to */ - /* the index for a set of high order */ - /* bits equal to the index. For longer */ - /* addresses, we hash the high order */ - /* bits to compute the index in */ - /* GC_top_index, and each entry points */ - /* to a hash chain. */ - /* The last entry in each chain is */ - /* GC_all_nils. */ - - -# define MAX_JUMP (HBLKSIZE - 1) - -# define HDR_FROM_BI(bi, p) \ - ((bi)->index[((word)(p) >> LOG_HBLKSIZE) & (BOTTOM_SZ - 1)]) -# ifndef HASH_TL -# define BI(p) (GC_top_index \ - [(word)(p) >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE)]) -# define HDR_INNER(p) HDR_FROM_BI(BI(p),p) -# ifdef SMALL_CONFIG -# define HDR(p) GC_find_header((ptr_t)(p)) -# else -# define HDR(p) HDR_INNER(p) -# endif -# define GET_BI(p, bottom_indx) (bottom_indx) = BI(p) -# define GET_HDR(p, hhdr) (hhdr) = HDR(p) -# define SET_HDR(p, hhdr) HDR_INNER(p) = (hhdr) -# define GET_HDR_ADDR(p, ha) (ha) = &(HDR_INNER(p)) -# else /* hash */ -/* Hash function for tree top level */ -# define TL_HASH(hi) ((hi) & (TOP_SZ - 1)) -/* Set bottom_indx to point to the bottom index for address p */ -# define GET_BI(p, bottom_indx) \ - { \ - register word hi = \ - (word)(p) >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE); \ - register bottom_index * _bi = GC_top_index[TL_HASH(hi)]; \ - \ - while (_bi -> key != hi && _bi != GC_all_nils) \ - _bi = _bi -> hash_link; \ - (bottom_indx) = _bi; \ - } -# define GET_HDR_ADDR(p, ha) \ - { \ - register bottom_index * bi; \ - \ - GET_BI(p, bi); \ - (ha) = &(HDR_FROM_BI(bi, p)); \ - } -# define GET_HDR(p, hhdr) { register hdr ** _ha; GET_HDR_ADDR(p, _ha); \ - (hhdr) = *_ha; } -# define SET_HDR(p, hhdr) { register hdr ** _ha; GET_HDR_ADDR(p, _ha); \ - *_ha = (hhdr); } -# define HDR(p) GC_find_header((ptr_t)(p)) -# endif - -/* Is the result a forwarding address to someplace closer to the */ -/* beginning of the block or NIL? */ -# define IS_FORWARDING_ADDR_OR_NIL(hhdr) ((unsigned long) (hhdr) <= MAX_JUMP) - -/* Get an HBLKSIZE aligned address closer to the beginning of the block */ -/* h. Assumes hhdr == HDR(h) and IS_FORWARDING_ADDR(hhdr). */ -# define FORWARDED_ADDR(h, hhdr) ((struct hblk *)(h) - (unsigned long)(hhdr)) -# endif /* GC_HEADERS_H */ diff --git a/boehm-gc/include/private/gc_priv.h b/boehm-gc/include/private/gc_priv.h deleted file mode 100644 index ac4d63a0b26..00000000000 --- a/boehm-gc/include/private/gc_priv.h +++ /dev/null @@ -1,1820 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. - * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. - * Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. - * - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* Boehm, February 16, 1996 2:30 pm PST */ - - -# ifndef GC_PRIVATE_H -# define GC_PRIVATE_H - -#if defined(mips) && defined(SYSTYPE_BSD) && defined(sony_news) - /* sony RISC NEWS, NEWSOS 4 */ -# define BSD_TIME -/* typedef long ptrdiff_t; -- necessary on some really old systems */ -#endif - -#if defined(mips) && defined(SYSTYPE_BSD43) - /* MIPS RISCOS 4 */ -# define BSD_TIME -#endif - -#ifdef BSD_TIME -# include <sys/types.h> -# include <sys/time.h> -# include <sys/resource.h> -#endif /* BSD_TIME */ - -# ifndef GC_H -# include "gc.h" -# endif - -typedef GC_word word; -typedef GC_signed_word signed_word; - -# ifndef CONFIG_H -# include "gcconfig.h" -# endif - -# ifndef HEADERS_H -# include "gc_hdrs.h" -# endif - -typedef int GC_bool; -# define TRUE 1 -# define FALSE 0 - -typedef char * ptr_t; /* A generic pointer to which we can add */ - /* byte displacements. */ - /* Preferably identical to caddr_t, if it */ - /* exists. */ - -#if defined(__STDC__) -# include <stdlib.h> -# if !(defined( sony_news ) ) -# include <stddef.h> -# endif -# define VOLATILE volatile -#else -# ifdef MSWIN32 -# include <stdlib.h> -# endif -# define VOLATILE -#endif - -#define CONST GC_CONST - -#if 0 /* was once defined for AMIGA */ -# define GC_FAR __far -#else -# define GC_FAR -#endif - -/*********************************/ -/* */ -/* Definitions for conservative */ -/* collector */ -/* */ -/*********************************/ - -/*********************************/ -/* */ -/* Easily changeable parameters */ -/* */ -/*********************************/ - -#define STUBBORN_ALLOC /* Define stubborn allocation primitives */ -#if defined(SRC_M3) || defined(SMALL_CONFIG) -# undef STUBBORN_ALLOC -#endif - - -/* #define ALL_INTERIOR_POINTERS */ - /* Forces all pointers into the interior of an */ - /* object to be considered valid. Also causes the */ - /* sizes of all objects to be inflated by at least */ - /* one byte. This should suffice to guarantee */ - /* that in the presence of a compiler that does */ - /* not perform garbage-collector-unsafe */ - /* optimizations, all portable, strictly ANSI */ - /* conforming C programs should be safely usable */ - /* with malloc replaced by GC_malloc and free */ - /* calls removed. There are several disadvantages: */ - /* 1. There are probably no interesting, portable, */ - /* strictly ANSI conforming C programs. */ - /* 2. This option makes it hard for the collector */ - /* to allocate space that is not ``pointed to'' */ - /* by integers, etc. Under SunOS 4.X with a */ - /* statically linked libc, we empiricaly */ - /* observed that it would be difficult to */ - /* allocate individual objects larger than 100K. */ - /* Even if only smaller objects are allocated, */ - /* more swap space is likely to be needed. */ - /* Fortunately, much of this will never be */ - /* touched. */ - /* If you can easily avoid using this option, do. */ - /* If not, try to keep individual objects small. */ - -#define PRINTSTATS /* Print garbage collection statistics */ - /* For less verbose output, undefine in reclaim.c */ - -#define PRINTTIMES /* Print the amount of time consumed by each garbage */ - /* collection. */ - -#define PRINTBLOCKS /* Print object sizes associated with heap blocks, */ - /* whether the objects are atomic or composite, and */ - /* whether or not the block was found to be empty */ - /* during the reclaim phase. Typically generates */ - /* about one screenful per garbage collection. */ -#undef PRINTBLOCKS - -#ifdef SILENT -# ifdef PRINTSTATS -# undef PRINTSTATS -# endif -# ifdef PRINTTIMES -# undef PRINTTIMES -# endif -# ifdef PRINTNBLOCKS -# undef PRINTNBLOCKS -# endif -#endif - -#if defined(PRINTSTATS) && !defined(GATHERSTATS) -# define GATHERSTATS -#endif - -#ifdef FINALIZE_ON_DEMAND -# define GC_INVOKE_FINALIZERS() -#else -# define GC_INVOKE_FINALIZERS() (void)GC_invoke_finalizers() -#endif - -#define MERGE_SIZES /* Round up some object sizes, so that fewer distinct */ - /* free lists are actually maintained. This applies */ - /* only to the top level routines in misc.c, not to */ - /* user generated code that calls GC_allocobj and */ - /* GC_allocaobj directly. */ - /* Slows down average programs slightly. May however */ - /* substantially reduce fragmentation if allocation */ - /* request sizes are widely scattered. */ - /* May save significant amounts of space for obj_map */ - /* entries. */ - -#ifndef OLD_BLOCK_ALLOC - /* Macros controlling large block allocation strategy. */ -# define EXACT_FIRST /* Make a complete pass through the large object */ - /* free list before splitting a block */ -# define PRESERVE_LAST /* Do not divide last allocated heap segment */ - /* unless we would otherwise need to expand the */ - /* heap. */ -#endif - -/* ALIGN_DOUBLE requires MERGE_SIZES at present. */ -# if defined(ALIGN_DOUBLE) && !defined(MERGE_SIZES) -# define MERGE_SIZES -# endif - -#if defined(ALL_INTERIOR_POINTERS) && !defined(DONT_ADD_BYTE_AT_END) -# define ADD_BYTE_AT_END -#endif - - -# ifndef LARGE_CONFIG -# define MINHINCR 16 /* Minimum heap increment, in blocks of HBLKSIZE */ - /* Must be multiple of largest page size. */ -# define MAXHINCR 512 /* Maximum heap increment, in blocks */ -# else -# define MINHINCR 64 -# define MAXHINCR 4096 -# endif - -# define TIME_LIMIT 50 /* We try to keep pause times from exceeding */ - /* this by much. In milliseconds. */ - -# define BL_LIMIT GC_black_list_spacing - /* If we need a block of N bytes, and we have */ - /* a block of N + BL_LIMIT bytes available, */ - /* and N > BL_LIMIT, */ - /* but all possible positions in it are */ - /* blacklisted, we just use it anyway (and */ - /* print a warning, if warnings are enabled). */ - /* This risks subsequently leaking the block */ - /* due to a false reference. But not using */ - /* the block risks unreasonable immediate */ - /* heap growth. */ - -/*********************************/ -/* */ -/* Stack saving for debugging */ -/* */ -/*********************************/ - -#ifdef SAVE_CALL_CHAIN - -/* - * Number of frames and arguments to save in objects allocated by - * debugging allocator. - */ -# define NFRAMES 6 /* Number of frames to save. Even for */ - /* alignment reasons. */ -# define NARGS 2 /* Mumber of arguments to save for each call. */ - -# define NEED_CALLINFO - -/* Fill in the pc and argument information for up to NFRAMES of my */ -/* callers. Ignore my frame and my callers frame. */ -void GC_save_callers (/* struct callinfo info[NFRAMES] */); - -void GC_print_callers (/* struct callinfo info[NFRAMES] */); - -#else - -# ifdef GC_ADD_CALLER -# define NFRAMES 1 -# define NARGS 0 -# define NEED_CALLINFO -# endif - -#endif - -#ifdef NEED_CALLINFO - struct callinfo { - word ci_pc; -# if NARGS > 0 - word ci_arg[NARGS]; /* bit-wise complement to avoid retention */ -# endif -# if defined(ALIGN_DOUBLE) && (NFRAMES * (NARGS + 1)) % 2 == 1 - /* Likely alignment problem. */ - word ci_dummy; -# endif - }; -#endif - - -/*********************************/ -/* */ -/* OS interface routines */ -/* */ -/*********************************/ - -#ifdef BSD_TIME -# undef CLOCK_TYPE -# undef GET_TIME -# undef MS_TIME_DIFF -# define CLOCK_TYPE struct timeval -# define GET_TIME(x) { struct rusage rusage; \ - getrusage (RUSAGE_SELF, &rusage); \ - x = rusage.ru_utime; } -# define MS_TIME_DIFF(a,b) ((double) (a.tv_sec - b.tv_sec) * 1000.0 \ - + (double) (a.tv_usec - b.tv_usec) / 1000.0) -#else /* !BSD_TIME */ -# include <time.h> -# if !defined(__STDC__) && defined(SPARC) && defined(SUNOS4) - clock_t clock(); /* Not in time.h, where it belongs */ -# endif -# if defined(FREEBSD) && !defined(CLOCKS_PER_SEC) -# include <machine/limits.h> -# define CLOCKS_PER_SEC CLK_TCK -# endif -# if !defined(CLOCKS_PER_SEC) -# define CLOCKS_PER_SEC 1000000 -/* - * This is technically a bug in the implementation. ANSI requires that - * CLOCKS_PER_SEC be defined. But at least under SunOS4.1.1, it isn't. - * Also note that the combination of ANSI C and POSIX is incredibly gross - * here. The type clock_t is used by both clock() and times(). But on - * some machines these use different notions of a clock tick, CLOCKS_PER_SEC - * seems to apply only to clock. Hence we use it here. On many machines, - * including SunOS, clock actually uses units of microseconds (which are - * not really clock ticks). - */ -# endif -# define CLOCK_TYPE clock_t -# define GET_TIME(x) x = clock() -# define MS_TIME_DIFF(a,b) ((unsigned long) \ - (1000.0*(double)((a)-(b))/(double)CLOCKS_PER_SEC)) -#endif /* !BSD_TIME */ - -/* We use bzero and bcopy internally. They may not be available. */ -# if defined(SPARC) && defined(SUNOS4) -# define BCOPY_EXISTS -# endif -# if defined(M68K) && defined(AMIGA) -# define BCOPY_EXISTS -# endif -# if defined(M68K) && defined(NEXT) -# define BCOPY_EXISTS -# endif -# if defined(VAX) -# define BCOPY_EXISTS -# endif -# if defined(AMIGA) -# include <string.h> -# define BCOPY_EXISTS -# endif - -# ifndef BCOPY_EXISTS -# include <string.h> -# define BCOPY(x,y,n) memcpy(y, x, (size_t)(n)) -# define BZERO(x,n) memset(x, 0, (size_t)(n)) -# else -# define BCOPY(x,y,n) bcopy((char *)(x),(char *)(y),(int)(n)) -# define BZERO(x,n) bzero((char *)(x),(int)(n)) -# endif - -/* HBLKSIZE aligned allocation. 0 is taken to mean failure */ -/* space is assumed to be cleared. */ -/* In the case os USE_MMAP, the argument must also be a */ -/* physical page size. */ -/* GET_MEM is currently not assumed to retrieve 0 filled space, */ -/* though we should perhaps take advantage of the case in which */ -/* does. */ -# ifdef PCR - char * real_malloc(); -# define GET_MEM(bytes) HBLKPTR(real_malloc((size_t)bytes + GC_page_size) \ - + GC_page_size-1) -# else -# ifdef OS2 - void * os2_alloc(size_t bytes); -# define GET_MEM(bytes) HBLKPTR((ptr_t)os2_alloc((size_t)bytes \ - + GC_page_size) \ - + GC_page_size-1) -# else -# if defined(AMIGA) || defined(NEXT) || defined(MACOSX) || defined(DOS4GW) -# define GET_MEM(bytes) HBLKPTR((size_t) \ - calloc(1, (size_t)bytes + GC_page_size) \ - + GC_page_size-1) -# else -# ifdef MSWIN32 - extern ptr_t GC_win32_get_mem(); -# define GET_MEM(bytes) (struct hblk *)GC_win32_get_mem(bytes) -# else -# ifdef MACOS -# if defined(USE_TEMPORARY_MEMORY) - extern Ptr GC_MacTemporaryNewPtr(size_t size, - Boolean clearMemory); -# define GET_MEM(bytes) HBLKPTR( \ - GC_MacTemporaryNewPtr(bytes + GC_page_size, true) \ - + GC_page_size-1) -# else -# define GET_MEM(bytes) HBLKPTR( \ - NewPtrClear(bytes + GC_page_size) + GC_page_size-1) -# endif -# else - extern ptr_t GC_unix_get_mem(); -# define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes) -# endif -# endif -# endif -# endif -# endif - -/* - * Mutual exclusion between allocator/collector routines. - * Needed if there is more than one allocator thread. - * FASTLOCK() is assumed to try to acquire the lock in a cheap and - * dirty way that is acceptable for a few instructions, e.g. by - * inhibiting preemption. This is assumed to have succeeded only - * if a subsequent call to FASTLOCK_SUCCEEDED() returns TRUE. - * FASTUNLOCK() is called whether or not FASTLOCK_SUCCEEDED(). - * If signals cannot be tolerated with the FASTLOCK held, then - * FASTLOCK should disable signals. The code executed under - * FASTLOCK is otherwise immune to interruption, provided it is - * not restarted. - * DCL_LOCK_STATE declares any local variables needed by LOCK and UNLOCK - * and/or DISABLE_SIGNALS and ENABLE_SIGNALS and/or FASTLOCK. - * (There is currently no equivalent for FASTLOCK.) - */ -# ifdef THREADS -# ifdef PCR_OBSOLETE /* Faster, but broken with multiple lwp's */ -# include "th/PCR_Th.h" -# include "th/PCR_ThCrSec.h" - extern struct PCR_Th_MLRep GC_allocate_ml; -# define DCL_LOCK_STATE PCR_sigset_t GC_old_sig_mask -# define LOCK() PCR_Th_ML_Acquire(&GC_allocate_ml) -# define UNLOCK() PCR_Th_ML_Release(&GC_allocate_ml) -# define FASTLOCK() PCR_ThCrSec_EnterSys() - /* Here we cheat (a lot): */ -# define FASTLOCK_SUCCEEDED() (*(int *)(&GC_allocate_ml) == 0) - /* TRUE if nobody currently holds the lock */ -# define FASTUNLOCK() PCR_ThCrSec_ExitSys() -# endif -# ifdef PCR -# include <base/PCR_Base.h> -# include <th/PCR_Th.h> - extern PCR_Th_ML GC_allocate_ml; -# define DCL_LOCK_STATE \ - PCR_ERes GC_fastLockRes; PCR_sigset_t GC_old_sig_mask -# define LOCK() PCR_Th_ML_Acquire(&GC_allocate_ml) -# define UNLOCK() PCR_Th_ML_Release(&GC_allocate_ml) -# define FASTLOCK() (GC_fastLockRes = PCR_Th_ML_Try(&GC_allocate_ml)) -# define FASTLOCK_SUCCEEDED() (GC_fastLockRes == PCR_ERes_okay) -# define FASTUNLOCK() {\ - if( FASTLOCK_SUCCEEDED() ) PCR_Th_ML_Release(&GC_allocate_ml); } -# endif -# ifdef SRC_M3 - extern word RT0u__inCritical; -# define LOCK() RT0u__inCritical++ -# define UNLOCK() RT0u__inCritical-- -# endif -# ifdef SOLARIS_THREADS -# include <thread.h> -# include <signal.h> - extern mutex_t GC_allocate_ml; -# define LOCK() mutex_lock(&GC_allocate_ml); -# define UNLOCK() mutex_unlock(&GC_allocate_ml); -# endif -# ifdef LINUX_THREADS -# include <pthread.h> -# if defined(I386) - inline static int GC_test_and_set(volatile unsigned int *addr) { - int oldval; - /* Note: the "xchg" instruction does not need a "lock" prefix */ - __asm__ __volatile__("xchgl %0, %1" - : "=r"(oldval), "=m"(*(addr)) - : "0"(1), "m"(*(addr))); - return oldval; - } -# else -# if defined(POWERPC) - inline static int GC_test_and_set(volatile unsigned int *addr) { - int oldval; - int temp = 1; // locked value - - __asm__ __volatile__( - "1:\tlwarx %0,0,%3\n" // load and reserve - "\tcmpwi %0, 0\n" // if load is - "\tbne 2f\n" // non-zero, return already set - "\tstwcx. %2,0,%1\n" // else store conditional - "\tbne- 1b\n" // retry if lost reservation - "2:\t\n" // oldval is zero if we set - : "=&r"(oldval), "=p"(addr) - : "r"(temp), "1"(addr) - : "memory"); - return (int)oldval; - } -# else -# ifdef ALPHA - inline static int GC_test_and_set(volatile unsigned int * -addr) - { - unsigned long oldvalue; - unsigned long temp; - - __asm__ __volatile__( - "1: ldl_l %0,%1\n" - " and %0,%3,%2\n" - " bne %2,2f\n" - " xor %0,%3,%0\n" - " stl_c %0,%1\n" - " beq %0,3f\n" - " mb\n" - "2:\n" - ".section .text2,\"ax\"\n" - "3: br 1b\n" - ".previous" - :"=&r" (temp), "=m" (*addr), "=&r" -(oldvalue) - :"Ir" (1), "m" (*addr)); - - return oldvalue; - } -# else - -- > Need implementation of GC_test_and_set() -# endif -# endif -# endif - inline static void GC_clear(volatile unsigned int *addr) { - *(addr) = 0; - } - - extern volatile unsigned int GC_allocate_lock; - /* This is not a mutex because mutexes that obey the (optional) */ - /* POSIX scheduling rules are subject to convoys in high contention */ - /* applications. This is basically a spin lock. */ - extern pthread_t GC_lock_holder; - extern void GC_lock(void); - /* Allocation lock holder. Only set if acquired by client through */ - /* GC_call_with_alloc_lock. */ -# define SET_LOCK_HOLDER() GC_lock_holder = pthread_self() -# define NO_THREAD (pthread_t)(-1) -# define UNSET_LOCK_HOLDER() GC_lock_holder = NO_THREAD -# define I_HOLD_LOCK() (pthread_equal(GC_lock_holder, pthread_self())) -# define LOCK() \ - { if (GC_test_and_set(&GC_allocate_lock)) GC_lock(); } -# define UNLOCK() \ - GC_clear(&GC_allocate_lock) - extern GC_bool GC_collecting; -# define ENTER_GC() \ - { \ - GC_collecting = 1; \ - } -# define EXIT_GC() GC_collecting = 0; -# endif /* LINUX_THREADS */ -# if defined(HPUX_THREADS) -# include <pthread.h> - extern pthread_mutex_t GC_allocate_ml; -# define LOCK() pthread_mutex_lock(&GC_allocate_ml) -# define UNLOCK() pthread_mutex_unlock(&GC_allocate_ml) -# endif -# if defined(IRIX_THREADS) || defined(IRIX_JDK_THREADS) - /* This may also eventually be appropriate for HPUX_THREADS */ -# include <pthread.h> -# ifndef HPUX_THREADS - /* This probably should never be included, but I can't test */ - /* on Irix anymore. */ -# include <mutex.h> -# endif - -# ifndef HPUX_THREADS -# if __mips < 3 || !(defined (_ABIN32) || defined(_ABI64)) \ - || !defined(_COMPILER_VERSION) || _COMPILER_VERSION < 700 -# define GC_test_and_set(addr, v) test_and_set(addr,v) -# else -# define GC_test_and_set(addr, v) __test_and_set(addr,v) -# endif -# else - /* I couldn't find a way to do this inline on HP/UX */ -# endif - extern unsigned long GC_allocate_lock; - /* This is not a mutex because mutexes that obey the (optional) */ - /* POSIX scheduling rules are subject to convoys in high contention */ - /* applications. This is basically a spin lock. */ - extern pthread_t GC_lock_holder; - extern void GC_lock(void); - /* Allocation lock holder. Only set if acquired by client through */ - /* GC_call_with_alloc_lock. */ -# define SET_LOCK_HOLDER() GC_lock_holder = pthread_self() -# define NO_THREAD (pthread_t)(-1) -# define UNSET_LOCK_HOLDER() GC_lock_holder = NO_THREAD -# define I_HOLD_LOCK() (pthread_equal(GC_lock_holder, pthread_self())) -# ifdef HPUX_THREADS -# define LOCK() { if (!GC_test_and_clear(&GC_allocate_lock)) GC_lock(); } - /* The following is INCORRECT, since the memory model is too weak. */ -# define UNLOCK() { GC_noop1(&GC_allocate_lock); \ - *(volatile unsigned long *)(&GC_allocate_lock) = 1; } -# else -# define LOCK() { if (GC_test_and_set(&GC_allocate_lock, 1)) GC_lock(); } -# if __mips >= 3 && (defined (_ABIN32) || defined(_ABI64)) \ - && defined(_COMPILER_VERSION) && _COMPILER_VERSION >= 700 -# define UNLOCK() __lock_release(&GC_allocate_lock) -# else - /* The function call in the following should prevent the */ - /* compiler from moving assignments to below the UNLOCK. */ - /* This is probably not necessary for ucode or gcc 2.8. */ - /* It may be necessary for Ragnarok and future gcc */ - /* versions. */ -# define UNLOCK() { GC_noop1(&GC_allocate_lock); \ - *(volatile unsigned long *)(&GC_allocate_lock) = 0; } -# endif -# endif - extern GC_bool GC_collecting; -# define ENTER_GC() \ - { \ - GC_collecting = 1; \ - } -# define EXIT_GC() GC_collecting = 0; -# endif /* IRIX_THREADS || IRIX_JDK_THREADS */ -# ifdef WIN32_THREADS -# include <windows.h> - GC_API CRITICAL_SECTION GC_allocate_ml; -# define LOCK() EnterCriticalSection(&GC_allocate_ml); -# define UNLOCK() LeaveCriticalSection(&GC_allocate_ml); -# endif -# ifndef SET_LOCK_HOLDER -# define SET_LOCK_HOLDER() -# define UNSET_LOCK_HOLDER() -# define I_HOLD_LOCK() FALSE - /* Used on platforms were locks can be reacquired, */ - /* so it doesn't matter if we lie. */ -# endif -# else -# define LOCK() -# define UNLOCK() -# endif -# ifndef SET_LOCK_HOLDER -# define SET_LOCK_HOLDER() -# define UNSET_LOCK_HOLDER() -# define I_HOLD_LOCK() FALSE - /* Used on platforms were locks can be reacquired, */ - /* so it doesn't matter if we lie. */ -# endif -# ifndef ENTER_GC -# define ENTER_GC() -# define EXIT_GC() -# endif - -# ifndef DCL_LOCK_STATE -# define DCL_LOCK_STATE -# endif -# ifndef FASTLOCK -# define FASTLOCK() LOCK() -# define FASTLOCK_SUCCEEDED() TRUE -# define FASTUNLOCK() UNLOCK() -# endif - -/* Delay any interrupts or signals that may abort this thread. Data */ -/* structures are in a consistent state outside this pair of calls. */ -/* ANSI C allows both to be empty (though the standard isn't very */ -/* clear on that point). Standard malloc implementations are usually */ -/* neither interruptable nor thread-safe, and thus correspond to */ -/* empty definitions. */ -# ifdef PCR -# define DISABLE_SIGNALS() \ - PCR_Th_SetSigMask(PCR_allSigsBlocked,&GC_old_sig_mask) -# define ENABLE_SIGNALS() \ - PCR_Th_SetSigMask(&GC_old_sig_mask, NIL) -# else -# if defined(SRC_M3) || defined(AMIGA) || defined(SOLARIS_THREADS) \ - || defined(MSWIN32) || defined(MACOS) || defined(DJGPP) \ - || defined(NO_SIGNALS) || defined(IRIX_THREADS) \ - || defined(IRIX_JDK_THREADS) || defined(LINUX_THREADS) - /* Also useful for debugging. */ - /* Should probably use thr_sigsetmask for SOLARIS_THREADS. */ -# define DISABLE_SIGNALS() -# define ENABLE_SIGNALS() -# else -# define DISABLE_SIGNALS() GC_disable_signals() - void GC_disable_signals(); -# define ENABLE_SIGNALS() GC_enable_signals() - void GC_enable_signals(); -# endif -# endif - -/* - * Stop and restart mutator threads. - */ -# ifdef PCR -# include "th/PCR_ThCtl.h" -# define STOP_WORLD() \ - PCR_ThCtl_SetExclusiveMode(PCR_ThCtl_ExclusiveMode_stopNormal, \ - PCR_allSigsBlocked, \ - PCR_waitForever) -# define START_WORLD() \ - PCR_ThCtl_SetExclusiveMode(PCR_ThCtl_ExclusiveMode_null, \ - PCR_allSigsBlocked, \ - PCR_waitForever); -# else -# if defined(SOLARIS_THREADS) || defined(WIN32_THREADS) \ - || defined(IRIX_THREADS) || defined(LINUX_THREADS) \ - || defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS) - void GC_stop_world(); - void GC_start_world(); -# define STOP_WORLD() GC_stop_world() -# define START_WORLD() GC_start_world() -# else -# define STOP_WORLD() -# define START_WORLD() -# endif -# endif - -/* Abandon ship */ -# ifdef PCR -# define ABORT(s) PCR_Base_Panic(s) -# else -# ifdef SMALL_CONFIG -# define ABORT(msg) abort(); -# else - GC_API void GC_abort(); -# define ABORT(msg) GC_abort(msg); -# endif -# endif - -/* Exit abnormally, but without making a mess (e.g. out of memory) */ -# ifdef PCR -# define EXIT() PCR_Base_Exit(1,PCR_waitForever) -# else -# define EXIT() (void)exit(1) -# endif - -/* Print warning message, e.g. almost out of memory. */ -# define WARN(msg,arg) (*GC_current_warn_proc)(msg, (GC_word)(arg)) -extern GC_warn_proc GC_current_warn_proc; - -/*********************************/ -/* */ -/* Word-size-dependent defines */ -/* */ -/*********************************/ - -#if CPP_WORDSZ == 32 -# define WORDS_TO_BYTES(x) ((x)<<2) -# define BYTES_TO_WORDS(x) ((x)>>2) -# define LOGWL ((word)5) /* log[2] of CPP_WORDSZ */ -# define modWORDSZ(n) ((n) & 0x1f) /* n mod size of word */ -# if ALIGNMENT != 4 -# define UNALIGNED -# endif -#endif - -#if CPP_WORDSZ == 64 -# define WORDS_TO_BYTES(x) ((x)<<3) -# define BYTES_TO_WORDS(x) ((x)>>3) -# define LOGWL ((word)6) /* log[2] of CPP_WORDSZ */ -# define modWORDSZ(n) ((n) & 0x3f) /* n mod size of word */ -# if ALIGNMENT != 8 -# define UNALIGNED -# endif -#endif - -#define WORDSZ ((word)CPP_WORDSZ) -#define SIGNB ((word)1 << (WORDSZ-1)) -#define BYTES_PER_WORD ((word)(sizeof (word))) -#define ONES ((word)(-1)) -#define divWORDSZ(n) ((n) >> LOGWL) /* divide n by size of word */ - -/*********************/ -/* */ -/* Size Parameters */ -/* */ -/*********************/ - -/* heap block size, bytes. Should be power of 2 */ - -#ifndef HBLKSIZE -# ifdef SMALL_CONFIG -# define CPP_LOG_HBLKSIZE 10 -# else -# if CPP_WORDSZ == 32 -# define CPP_LOG_HBLKSIZE 12 -# else -# define CPP_LOG_HBLKSIZE 13 -# endif -# endif -#else -# if HBLKSIZE == 512 -# define CPP_LOG_HBLKSIZE 9 -# endif -# if HBLKSIZE == 1024 -# define CPP_LOG_HBLKSIZE 10 -# endif -# if HBLKSIZE == 2048 -# define CPP_LOG_HBLKSIZE 11 -# endif -# if HBLKSIZE == 4096 -# define CPP_LOG_HBLKSIZE 12 -# endif -# if HBLKSIZE == 8192 -# define CPP_LOG_HBLKSIZE 13 -# endif -# if HBLKSIZE == 16384 -# define CPP_LOG_HBLKSIZE 14 -# endif -# ifndef CPP_LOG_HBLKSIZE - --> fix HBLKSIZE -# endif -# undef HBLKSIZE -#endif -# define CPP_HBLKSIZE (1 << CPP_LOG_HBLKSIZE) -# define LOG_HBLKSIZE ((word)CPP_LOG_HBLKSIZE) -# define HBLKSIZE ((word)CPP_HBLKSIZE) - - -/* max size objects supported by freelist (larger objects may be */ -/* allocated, but less efficiently) */ - -#define CPP_MAXOBJSZ BYTES_TO_WORDS(CPP_HBLKSIZE/2) -#define MAXOBJSZ ((word)CPP_MAXOBJSZ) - -# define divHBLKSZ(n) ((n) >> LOG_HBLKSIZE) - -# define HBLK_PTR_DIFF(p,q) divHBLKSZ((ptr_t)p - (ptr_t)q) - /* Equivalent to subtracting 2 hblk pointers. */ - /* We do it this way because a compiler should */ - /* find it hard to use an integer division */ - /* instead of a shift. The bundled SunOS 4.1 */ - /* o.w. sometimes pessimizes the subtraction to */ - /* involve a call to .div. */ - -# define modHBLKSZ(n) ((n) & (HBLKSIZE-1)) - -# define HBLKPTR(objptr) ((struct hblk *)(((word) (objptr)) & ~(HBLKSIZE-1))) - -# define HBLKDISPL(objptr) (((word) (objptr)) & (HBLKSIZE-1)) - -/* Round up byte allocation requests to integral number of words, etc. */ -# ifdef ADD_BYTE_AT_END -# define ROUNDED_UP_WORDS(n) BYTES_TO_WORDS((n) + WORDS_TO_BYTES(1)) -# ifdef ALIGN_DOUBLE -# define ALIGNED_WORDS(n) (BYTES_TO_WORDS((n) + WORDS_TO_BYTES(2)) & ~1) -# else -# define ALIGNED_WORDS(n) ROUNDED_UP_WORDS(n) -# endif -# define SMALL_OBJ(bytes) ((bytes) < WORDS_TO_BYTES(MAXOBJSZ)) -# define ADD_SLOP(bytes) ((bytes)+1) -# else -# define ROUNDED_UP_WORDS(n) BYTES_TO_WORDS((n) + (WORDS_TO_BYTES(1) - 1)) -# ifdef ALIGN_DOUBLE -# define ALIGNED_WORDS(n) \ - (BYTES_TO_WORDS((n) + WORDS_TO_BYTES(2) - 1) & ~1) -# else -# define ALIGNED_WORDS(n) ROUNDED_UP_WORDS(n) -# endif -# define SMALL_OBJ(bytes) ((bytes) <= WORDS_TO_BYTES(MAXOBJSZ)) -# define ADD_SLOP(bytes) (bytes) -# endif - - -/* - * Hash table representation of sets of pages. This assumes it is - * OK to add spurious entries to sets. - * Used by black-listing code, and perhaps by dirty bit maintenance code. - */ - -# ifdef LARGE_CONFIG -# define LOG_PHT_ENTRIES 17 -# else -# define LOG_PHT_ENTRIES 14 /* Collisions are likely if heap grows */ - /* to more than 16K hblks = 64MB. */ - /* Each hash table occupies 2K bytes. */ -# endif -# define PHT_ENTRIES ((word)1 << LOG_PHT_ENTRIES) -# define PHT_SIZE (PHT_ENTRIES >> LOGWL) -typedef word page_hash_table[PHT_SIZE]; - -# define PHT_HASH(addr) ((((word)(addr)) >> LOG_HBLKSIZE) & (PHT_ENTRIES - 1)) - -# define get_pht_entry_from_index(bl, index) \ - (((bl)[divWORDSZ(index)] >> modWORDSZ(index)) & 1) -# define set_pht_entry_from_index(bl, index) \ - (bl)[divWORDSZ(index)] |= (word)1 << modWORDSZ(index) -# define clear_pht_entry_from_index(bl, index) \ - (bl)[divWORDSZ(index)] &= ~((word)1 << modWORDSZ(index)) - - - -/********************************************/ -/* */ -/* H e a p B l o c k s */ -/* */ -/********************************************/ - -/* heap block header */ -#define HBLKMASK (HBLKSIZE-1) - -#define BITS_PER_HBLK (HBLKSIZE * 8) - -#define MARK_BITS_PER_HBLK (BITS_PER_HBLK/CPP_WORDSZ) - /* upper bound */ - /* We allocate 1 bit/word. Only the first word */ - /* in each object is actually marked. */ - -# ifdef ALIGN_DOUBLE -# define MARK_BITS_SZ (((MARK_BITS_PER_HBLK + 2*CPP_WORDSZ - 1) \ - / (2*CPP_WORDSZ))*2) -# else -# define MARK_BITS_SZ ((MARK_BITS_PER_HBLK + CPP_WORDSZ - 1)/CPP_WORDSZ) -# endif - /* Upper bound on number of mark words per heap block */ - -struct hblkhdr { - word hb_sz; /* If in use, size in words, of objects in the block. */ - /* if free, the size in bytes of the whole block */ - struct hblk * hb_next; /* Link field for hblk free list */ - /* and for lists of chunks waiting to be */ - /* reclaimed. */ - struct hblk * hb_prev; /* Backwards link for free list. */ - word hb_descr; /* object descriptor for marking. See */ - /* mark.h. */ - char* hb_map; /* A pointer to a pointer validity map of the block. */ - /* See GC_obj_map. */ - /* Valid for all blocks with headers. */ - /* Free blocks point to GC_invalid_map. */ - unsigned char hb_obj_kind; - /* Kind of objects in the block. Each kind */ - /* identifies a mark procedure and a set of */ - /* list headers. Sometimes called regions. */ - unsigned char hb_flags; -# define IGNORE_OFF_PAGE 1 /* Ignore pointers that do not */ - /* point to the first page of */ - /* this object. */ -# define WAS_UNMAPPED 2 /* This is a free block, which has */ - /* been unmapped from the address */ - /* space. */ - /* GC_remap must be invoked on it */ - /* before it can be reallocated. */ - /* Only set with USE_MUNMAP. */ - unsigned short hb_last_reclaimed; - /* Value of GC_gc_no when block was */ - /* last allocated or swept. May wrap. */ - /* For a free block, this is maintained */ - /* unly for USE_MUNMAP, and indicates */ - /* when the header was allocated, or */ - /* when the size of the block last */ - /* changed. */ - word hb_marks[MARK_BITS_SZ]; - /* Bit i in the array refers to the */ - /* object starting at the ith word (header */ - /* INCLUDED) in the heap block. */ - /* The lsb of word 0 is numbered 0. */ - /* Unused bits are invalid, and are */ - /* occasionally set, e.g for uncollectable */ - /* objects. */ -}; - -/* heap block body */ - -# define DISCARD_WORDS 0 - /* Number of words to be dropped at the beginning of each block */ - /* Must be a multiple of WORDSZ. May reasonably be nonzero */ - /* on machines that don't guarantee longword alignment of */ - /* pointers, so that the number of false hits is minimized. */ - /* 0 and WORDSZ are probably the only reasonable values. */ - -# define BODY_SZ ((HBLKSIZE-WORDS_TO_BYTES(DISCARD_WORDS))/sizeof(word)) - -struct hblk { -# if (DISCARD_WORDS != 0) - word garbage[DISCARD_WORDS]; -# endif - word hb_body[BODY_SZ]; -}; - -# define HDR_WORDS ((word)DISCARD_WORDS) -# define HDR_BYTES ((word)WORDS_TO_BYTES(DISCARD_WORDS)) - -# define OBJ_SZ_TO_BLOCKS(sz) \ - divHBLKSZ(HDR_BYTES + WORDS_TO_BYTES(sz) + HBLKSIZE-1) - /* Size of block (in units of HBLKSIZE) needed to hold objects of */ - /* given sz (in words). */ - -/* Object free list link */ -# define obj_link(p) (*(ptr_t *)(p)) - -/* The type of mark procedures. This really belongs in gc_mark.h. */ -/* But we put it here, so that we can avoid scanning the mark proc */ -/* table. */ -typedef struct ms_entry * (*mark_proc)(/* word * addr, mark_stack_ptr, - mark_stack_limit, env */); -# define LOG_MAX_MARK_PROCS 6 -# define MAX_MARK_PROCS (1 << LOG_MAX_MARK_PROCS) - -/* Root sets. Logically private to mark_rts.c. But we don't want the */ -/* tables scanned, so we put them here. */ -/* MAX_ROOT_SETS is the maximum number of ranges that can be */ -/* registered as static roots. */ -# ifdef LARGE_CONFIG -# define MAX_ROOT_SETS 4096 -# else -# ifdef PCR -# define MAX_ROOT_SETS 1024 -# else -# ifdef MSWIN32 -# define MAX_ROOT_SETS 512 - /* Under NT, we add only written pages, which can result */ - /* in many small root sets. */ -# else -# define MAX_ROOT_SETS 64 -# endif -# endif -# endif - -# define MAX_EXCLUSIONS (MAX_ROOT_SETS/4) -/* Maximum number of segments that can be excluded from root sets. */ - -/* - * Data structure for excluded static roots. - */ -struct exclusion { - ptr_t e_start; - ptr_t e_end; -}; - -/* Data structure for list of root sets. */ -/* We keep a hash table, so that we can filter out duplicate additions. */ -/* Under Win32, we need to do a better job of filtering overlaps, so */ -/* we resort to sequential search, and pay the price. */ -struct roots { - ptr_t r_start; - ptr_t r_end; -# ifndef MSWIN32 - struct roots * r_next; -# endif - GC_bool r_tmp; - /* Delete before registering new dynamic libraries */ -}; - -#ifndef MSWIN32 - /* Size of hash table index to roots. */ -# define LOG_RT_SIZE 6 -# define RT_SIZE (1 << LOG_RT_SIZE) /* Power of 2, may be != MAX_ROOT_SETS */ -#endif - -/* Lists of all heap blocks and free lists */ -/* as well as other random data structures */ -/* that should not be scanned by the */ -/* collector. */ -/* These are grouped together in a struct */ -/* so that they can be easily skipped by the */ -/* GC_mark routine. */ -/* The ordering is weird to make GC_malloc */ -/* faster by keeping the important fields */ -/* sufficiently close together that a */ -/* single load of a base register will do. */ -/* Scalars that could easily appear to */ -/* be pointers are also put here. */ -/* The main fields should precede any */ -/* conditionally included fields, so that */ -/* gc_inl.h will work even if a different set */ -/* of macros is defined when the client is */ -/* compiled. */ - -struct _GC_arrays { - word _heapsize; - word _max_heapsize; - ptr_t _last_heap_addr; - ptr_t _prev_heap_addr; - word _large_free_bytes; - /* Total bytes contained in blocks on large object free */ - /* list. */ - word _words_allocd_before_gc; - /* Number of words allocated before this */ - /* collection cycle. */ - word _words_allocd; - /* Number of words allocated during this collection cycle */ - word _words_wasted; - /* Number of words wasted due to internal fragmentation */ - /* in large objects, or due to dropping blacklisted */ - /* blocks, since last gc. Approximate. */ - word _words_finalized; - /* Approximate number of words in objects (and headers) */ - /* That became ready for finalization in the last */ - /* collection. */ - word _non_gc_bytes_at_gc; - /* Number of explicitly managed bytes of storage */ - /* at last collection. */ - word _mem_freed; - /* Number of explicitly deallocated words of memory */ - /* since last collection. */ - mark_proc _mark_procs[MAX_MARK_PROCS]; - /* Table of user-defined mark procedures. There is */ - /* a small number of these, which can be referenced */ - /* by DS_PROC mark descriptors. See gc_mark.h. */ - ptr_t _objfreelist[MAXOBJSZ+1]; - /* free list for objects */ - ptr_t _aobjfreelist[MAXOBJSZ+1]; - /* free list for atomic objs */ - - ptr_t _uobjfreelist[MAXOBJSZ+1]; - /* uncollectable but traced objs */ - /* objects on this and auobjfreelist */ - /* are always marked, except during */ - /* garbage collections. */ -# ifdef ATOMIC_UNCOLLECTABLE - ptr_t _auobjfreelist[MAXOBJSZ+1]; -# endif - /* uncollectable but traced objs */ - -# ifdef GATHERSTATS - word _composite_in_use; - /* Number of words in accessible composite */ - /* objects. */ - word _atomic_in_use; - /* Number of words in accessible atomic */ - /* objects. */ -# endif -# ifdef USE_MUNMAP - word _unmapped_bytes; -# endif -# ifdef MERGE_SIZES - unsigned _size_map[WORDS_TO_BYTES(MAXOBJSZ+1)]; - /* Number of words to allocate for a given allocation request in */ - /* bytes. */ -# endif - -# ifdef STUBBORN_ALLOC - ptr_t _sobjfreelist[MAXOBJSZ+1]; -# endif - /* free list for immutable objects */ - ptr_t _obj_map[MAXOBJSZ+1]; - /* If not NIL, then a pointer to a map of valid */ - /* object addresses. _obj_map[sz][i] is j if the */ - /* address block_start+i is a valid pointer */ - /* to an object at */ - /* block_start+i&~3 - WORDS_TO_BYTES(j). */ - /* (If ALL_INTERIOR_POINTERS is defined, then */ - /* instead ((short *)(hb_map[sz])[i] is j if */ - /* block_start+WORDS_TO_BYTES(i) is in the */ - /* interior of an object starting at */ - /* block_start+WORDS_TO_BYTES(i-j)). */ - /* It is OBJ_INVALID if */ - /* block_start+WORDS_TO_BYTES(i) is not */ - /* valid as a pointer to an object. */ - /* We assume all values of j <= OBJ_INVALID. */ - /* The zeroth entry corresponds to large objects.*/ -# ifdef ALL_INTERIOR_POINTERS -# define map_entry_type short -# define OBJ_INVALID 0x7fff -# define MAP_ENTRY(map, bytes) \ - (((map_entry_type *)(map))[BYTES_TO_WORDS(bytes)]) -# define MAP_ENTRIES BYTES_TO_WORDS(HBLKSIZE) -# define MAP_SIZE (MAP_ENTRIES * sizeof(map_entry_type)) -# define OFFSET_VALID(displ) TRUE -# define CPP_MAX_OFFSET (HBLKSIZE - HDR_BYTES - 1) -# define MAX_OFFSET ((word)CPP_MAX_OFFSET) -# else -# define map_entry_type char -# define OBJ_INVALID 0x7f -# define MAP_ENTRY(map, bytes) \ - (map)[bytes] -# define MAP_ENTRIES HBLKSIZE -# define MAP_SIZE MAP_ENTRIES -# define CPP_MAX_OFFSET (WORDS_TO_BYTES(OBJ_INVALID) - 1) -# define MAX_OFFSET ((word)CPP_MAX_OFFSET) -# define VALID_OFFSET_SZ \ - (CPP_MAX_OFFSET > WORDS_TO_BYTES(CPP_MAXOBJSZ)? \ - CPP_MAX_OFFSET+1 \ - : WORDS_TO_BYTES(CPP_MAXOBJSZ)+1) - char _valid_offsets[VALID_OFFSET_SZ]; - /* GC_valid_offsets[i] == TRUE ==> i */ - /* is registered as a displacement. */ -# define OFFSET_VALID(displ) GC_valid_offsets[displ] - char _modws_valid_offsets[sizeof(word)]; - /* GC_valid_offsets[i] ==> */ - /* GC_modws_valid_offsets[i%sizeof(word)] */ -# endif -# ifdef STUBBORN_ALLOC - page_hash_table _changed_pages; - /* Stubborn object pages that were changes since last call to */ - /* GC_read_changed. */ - page_hash_table _prev_changed_pages; - /* Stubborn object pages that were changes before last call to */ - /* GC_read_changed. */ -# endif -# if defined(PROC_VDB) || defined(MPROTECT_VDB) - page_hash_table _grungy_pages; /* Pages that were dirty at last */ - /* GC_read_dirty. */ -# endif -# ifdef MPROTECT_VDB - VOLATILE page_hash_table _dirty_pages; - /* Pages dirtied since last GC_read_dirty. */ -# endif -# ifdef PROC_VDB - page_hash_table _written_pages; /* Pages ever dirtied */ -# endif -# ifdef LARGE_CONFIG -# if CPP_WORDSZ > 32 -# define MAX_HEAP_SECTS 4096 /* overflows at roughly 64 GB */ -# else -# define MAX_HEAP_SECTS 768 /* Separately added heap sections. */ -# endif -# else -# define MAX_HEAP_SECTS 256 -# endif - struct HeapSect { - ptr_t hs_start; word hs_bytes; - } _heap_sects[MAX_HEAP_SECTS]; -# ifdef MSWIN32 - ptr_t _heap_bases[MAX_HEAP_SECTS]; - /* Start address of memory regions obtained from kernel. */ -# endif - struct roots _static_roots[MAX_ROOT_SETS]; -# ifndef MSWIN32 - struct roots * _root_index[RT_SIZE]; -# endif - struct exclusion _excl_table[MAX_EXCLUSIONS]; - /* Block header index; see gc_headers.h */ - bottom_index * _all_nils; - bottom_index * _top_index [TOP_SZ]; -#ifdef SAVE_CALL_CHAIN - struct callinfo _last_stack[NFRAMES]; /* Stack at last garbage collection.*/ - /* Useful for debugging mysterious */ - /* object disappearances. */ - /* In the multithreaded case, we */ - /* currently only save the calling */ - /* stack. */ -#endif -}; - -GC_API GC_FAR struct _GC_arrays GC_arrays; - -# define GC_objfreelist GC_arrays._objfreelist -# define GC_aobjfreelist GC_arrays._aobjfreelist -# define GC_uobjfreelist GC_arrays._uobjfreelist -# ifdef ATOMIC_UNCOLLECTABLE -# define GC_auobjfreelist GC_arrays._auobjfreelist -# endif -# define GC_sobjfreelist GC_arrays._sobjfreelist -# define GC_valid_offsets GC_arrays._valid_offsets -# define GC_modws_valid_offsets GC_arrays._modws_valid_offsets -# ifdef STUBBORN_ALLOC -# define GC_changed_pages GC_arrays._changed_pages -# define GC_prev_changed_pages GC_arrays._prev_changed_pages -# endif -# define GC_obj_map GC_arrays._obj_map -# define GC_last_heap_addr GC_arrays._last_heap_addr -# define GC_prev_heap_addr GC_arrays._prev_heap_addr -# define GC_words_allocd GC_arrays._words_allocd -# define GC_words_wasted GC_arrays._words_wasted -# define GC_large_free_bytes GC_arrays._large_free_bytes -# define GC_words_finalized GC_arrays._words_finalized -# define GC_non_gc_bytes_at_gc GC_arrays._non_gc_bytes_at_gc -# define GC_mem_freed GC_arrays._mem_freed -# define GC_mark_procs GC_arrays._mark_procs -# define GC_heapsize GC_arrays._heapsize -# define GC_max_heapsize GC_arrays._max_heapsize -# define GC_words_allocd_before_gc GC_arrays._words_allocd_before_gc -# define GC_heap_sects GC_arrays._heap_sects -# define GC_last_stack GC_arrays._last_stack -# ifdef USE_MUNMAP -# define GC_unmapped_bytes GC_arrays._unmapped_bytes -# endif -# ifdef MSWIN32 -# define GC_heap_bases GC_arrays._heap_bases -# endif -# define GC_static_roots GC_arrays._static_roots -# define GC_root_index GC_arrays._root_index -# define GC_excl_table GC_arrays._excl_table -# define GC_all_nils GC_arrays._all_nils -# define GC_top_index GC_arrays._top_index -# if defined(PROC_VDB) || defined(MPROTECT_VDB) -# define GC_grungy_pages GC_arrays._grungy_pages -# endif -# ifdef MPROTECT_VDB -# define GC_dirty_pages GC_arrays._dirty_pages -# endif -# ifdef PROC_VDB -# define GC_written_pages GC_arrays._written_pages -# endif -# ifdef GATHERSTATS -# define GC_composite_in_use GC_arrays._composite_in_use -# define GC_atomic_in_use GC_arrays._atomic_in_use -# endif -# ifdef MERGE_SIZES -# define GC_size_map GC_arrays._size_map -# endif - -# define beginGC_arrays ((ptr_t)(&GC_arrays)) -# define endGC_arrays (((ptr_t)(&GC_arrays)) + (sizeof GC_arrays)) - -/* Object kinds: */ -# define MAXOBJKINDS 16 - -extern struct obj_kind { - ptr_t *ok_freelist; /* Array of free listheaders for this kind of object */ - /* Point either to GC_arrays or to storage allocated */ - /* with GC_scratch_alloc. */ - struct hblk **ok_reclaim_list; - /* List headers for lists of blocks waiting to be */ - /* swept. */ - word ok_descriptor; /* Descriptor template for objects in this */ - /* block. */ - GC_bool ok_relocate_descr; - /* Add object size in bytes to descriptor */ - /* template to obtain descriptor. Otherwise */ - /* template is used as is. */ - GC_bool ok_init; /* Clear objects before putting them on the free list. */ -} GC_obj_kinds[MAXOBJKINDS]; - -# define endGC_obj_kinds (((ptr_t)(&GC_obj_kinds)) + (sizeof GC_obj_kinds)) - -# define end_gc_area ((ptr_t)endGC_arrays == (ptr_t)(&GC_obj_kinds) ? \ - endGC_obj_kinds : endGC_arrays) - -/* Predefined kinds: */ -# define PTRFREE 0 -# define NORMAL 1 -# define UNCOLLECTABLE 2 -# ifdef ATOMIC_UNCOLLECTABLE -# define AUNCOLLECTABLE 3 -# define STUBBORN 4 -# define IS_UNCOLLECTABLE(k) (((k) & ~1) == UNCOLLECTABLE) -# else -# define STUBBORN 3 -# define IS_UNCOLLECTABLE(k) ((k) == UNCOLLECTABLE) -# endif - -extern int GC_n_kinds; - -GC_API word GC_fo_entries; - -extern word GC_n_heap_sects; /* Number of separately added heap */ - /* sections. */ - -extern word GC_page_size; - -# ifdef MSWIN32 -extern word GC_n_heap_bases; /* See GC_heap_bases. */ -# endif - -extern word GC_total_stack_black_listed; - /* Number of bytes on stack blacklist. */ - -extern word GC_black_list_spacing; - /* Average number of bytes between blacklisted */ - /* blocks. Approximate. */ - /* Counts only blocks that are */ - /* "stack-blacklisted", i.e. that are */ - /* problematic in the interior of an object. */ - -extern char * GC_invalid_map; - /* Pointer to the nowhere valid hblk map */ - /* Blocks pointing to this map are free. */ - -extern struct hblk * GC_hblkfreelist[]; - /* List of completely empty heap blocks */ - /* Linked through hb_next field of */ - /* header structure associated with */ - /* block. */ - -extern GC_bool GC_is_initialized; /* GC_init() has been run. */ - -extern GC_bool GC_objects_are_marked; /* There are marked objects in */ - /* the heap. */ - -#ifndef SMALL_CONFIG - extern GC_bool GC_incremental; - /* Using incremental/generational collection. */ -#else -# define GC_incremental TRUE - /* Hopefully allow optimizer to remove some code. */ -#endif - -extern GC_bool GC_dirty_maintained; - /* Dirty bits are being maintained, */ - /* either for incremental collection, */ - /* or to limit the root set. */ - -extern word GC_root_size; /* Total size of registered root sections */ - -extern GC_bool GC_debugging_started; /* GC_debug_malloc has been called. */ - -extern ptr_t GC_least_plausible_heap_addr; -extern ptr_t GC_greatest_plausible_heap_addr; - /* Bounds on the heap. Guaranteed valid */ - /* Likely to include future heap expansion. */ - -/* Operations */ -# ifndef abs -# define abs(x) ((x) < 0? (-(x)) : (x)) -# endif - - -/* Marks are in a reserved area in */ -/* each heap block. Each word has one mark bit associated */ -/* with it. Only those corresponding to the beginning of an */ -/* object are used. */ - - -/* Mark bit operations */ - -/* - * Retrieve, set, clear the mark bit corresponding - * to the nth word in a given heap block. - * - * (Recall that bit n corresponds to object beginning at word n - * relative to the beginning of the block, including unused words) - */ - -# define mark_bit_from_hdr(hhdr,n) (((hhdr)->hb_marks[divWORDSZ(n)] \ - >> (modWORDSZ(n))) & (word)1) -# define set_mark_bit_from_hdr(hhdr,n) (hhdr)->hb_marks[divWORDSZ(n)] \ - |= (word)1 << modWORDSZ(n) - -# define clear_mark_bit_from_hdr(hhdr,n) (hhdr)->hb_marks[divWORDSZ(n)] \ - &= ~((word)1 << modWORDSZ(n)) - -/* Important internal collector routines */ - -ptr_t GC_approx_sp(); - -GC_bool GC_should_collect(); -#ifdef PRESERVE_LAST - GC_bool GC_in_last_heap_sect(/* ptr_t */); - /* In last added heap section? If so, avoid breaking up. */ -#endif -void GC_apply_to_all_blocks(/*fn, client_data*/); - /* Invoke fn(hbp, client_data) for each */ - /* allocated heap block. */ -struct hblk * GC_next_used_block(/* struct hblk * h */); - /* Return first in-use block >= h */ -struct hblk * GC_prev_block(/* struct hblk * h */); - /* Return last block <= h. Returned block */ - /* is managed by GC, but may or may not be in */ - /* use. */ -void GC_mark_init(); -void GC_clear_marks(); /* Clear mark bits for all heap objects. */ -void GC_invalidate_mark_state(); /* Tell the marker that marked */ - /* objects may point to unmarked */ - /* ones, and roots may point to */ - /* unmarked objects. */ - /* Reset mark stack. */ -void GC_mark_from_mark_stack(); /* Mark from everything on the mark stack. */ - /* Return after about one pages worth of */ - /* work. */ -GC_bool GC_mark_stack_empty(); -GC_bool GC_mark_some(/* cold_gc_frame */); - /* Perform about one pages worth of marking */ - /* work of whatever kind is needed. Returns */ - /* quickly if no collection is in progress. */ - /* Return TRUE if mark phase finished. */ -void GC_initiate_gc(); /* initiate collection. */ - /* If the mark state is invalid, this */ - /* becomes full colleection. Otherwise */ - /* it's partial. */ -void GC_push_all(/*b,t*/); /* Push everything in a range */ - /* onto mark stack. */ -void GC_push_dirty(/*b,t*/); /* Push all possibly changed */ - /* subintervals of [b,t) onto */ - /* mark stack. */ -#ifndef SMALL_CONFIG - void GC_push_conditional(/* ptr_t b, ptr_t t, GC_bool all*/); -#else -# define GC_push_conditional(b, t, all) GC_push_all(b, t) -#endif - /* Do either of the above, depending */ - /* on the third arg. */ -void GC_push_all_stack(/*b,t*/); /* As above, but consider */ - /* interior pointers as valid */ -void GC_push_all_eager(/*b,t*/); /* Same as GC_push_all_stack, but */ - /* ensures that stack is scanned */ - /* immediately, not just scheduled */ - /* for scanning. */ -#ifndef THREADS - void GC_push_all_stack_partially_eager(/* bottom, top, cold_gc_frame */); - /* Similar to GC_push_all_eager, but only the */ - /* part hotter than cold_gc_frame is scanned */ - /* immediately. Needed to endure that callee- */ - /* save registers are not missed. */ -#else - /* In the threads case, we push part of the current thread stack */ - /* with GC_push_all_eager when we push the registers. This gets the */ - /* callee-save registers that may disappear. The remainder of the */ - /* stacks are scheduled for scanning in *GC_push_other_roots, which */ - /* is thread-package-specific. */ -#endif -void GC_push_current_stack(/* ptr_t cold_gc_frame */); - /* Push enough of the current stack eagerly to */ - /* ensure that callee-save registers saved in */ - /* GC frames are scanned. */ - /* In the non-threads case, schedule entire */ - /* stack for scanning. */ -void GC_push_roots(/* GC_bool all, ptr_t cold_gc_frame */); - /* Push all or dirty roots. */ -extern void (*GC_push_other_roots)(); - /* Push system or application specific roots */ - /* onto the mark stack. In some environments */ - /* (e.g. threads environments) this is */ - /* predfined to be non-zero. A client supplied */ - /* replacement should also call the original */ - /* function. */ -extern void (*GC_start_call_back)(/* void */); - /* Called at start of full collections. */ - /* Not called if 0. Called with allocation */ - /* lock held. */ - /* 0 by default. */ -void GC_push_regs(); /* Push register contents onto mark stack. */ - /* If NURSERY is defined, the default push */ - /* action can be overridden with GC_push_proc */ -void GC_remark(); /* Mark from all marked objects. Used */ - /* only if we had to drop something. */ - -# ifdef NURSERY - extern void (*GC_push_proc)(ptr_t); -# endif -# if defined(MSWIN32) - void __cdecl GC_push_one(); -# else - void GC_push_one(/*p*/); /* If p points to an object, mark it */ - /* and push contents on the mark stack */ -# endif -void GC_push_one_checked(/*p*/); /* Ditto, omits plausibility test */ -void GC_push_marked(/* struct hblk h, hdr * hhdr */); - /* Push contents of all marked objects in h onto */ - /* mark stack. */ -#ifdef SMALL_CONFIG -# define GC_push_next_marked_dirty(h) GC_push_next_marked(h) -#else - struct hblk * GC_push_next_marked_dirty(/* h */); - /* Invoke GC_push_marked on next dirty block above h. */ - /* Return a pointer just past the end of this block. */ -#endif /* !SMALL_CONFIG */ -struct hblk * GC_push_next_marked(/* h */); - /* Ditto, but also mark from clean pages. */ -struct hblk * GC_push_next_marked_uncollectable(/* h */); - /* Ditto, but mark only from uncollectable pages. */ -GC_bool GC_stopped_mark(); /* Stop world and mark from all roots */ - /* and rescuers. */ -void GC_clear_hdr_marks(/* hhdr */); /* Clear the mark bits in a header */ -void GC_set_hdr_marks(/* hhdr */); /* Set the mark bits in a header */ -void GC_add_roots_inner(); -GC_bool GC_is_static_root(/* ptr_t p */); - /* Is the address p in one of the registered static */ - /* root sections? */ -void GC_register_dynamic_libraries(); - /* Add dynamic library data sections to the root set. */ - -/* Machine dependent startup routines */ -ptr_t GC_get_stack_base(); -void GC_register_data_segments(); - -/* Black listing: */ -void GC_bl_init(); -# ifndef ALL_INTERIOR_POINTERS - void GC_add_to_black_list_normal(/* bits, maybe source */); - /* Register bits as a possible future false */ - /* reference from the heap or static data */ -# ifdef PRINT_BLACK_LIST -# define GC_ADD_TO_BLACK_LIST_NORMAL(bits, source) \ - GC_add_to_black_list_normal(bits, source) -# else -# define GC_ADD_TO_BLACK_LIST_NORMAL(bits, source) \ - GC_add_to_black_list_normal(bits) -# endif -# else -# ifdef PRINT_BLACK_LIST -# define GC_ADD_TO_BLACK_LIST_NORMAL(bits, source) \ - GC_add_to_black_list_stack(bits, source) -# else -# define GC_ADD_TO_BLACK_LIST_NORMAL(bits, source) \ - GC_add_to_black_list_stack(bits) -# endif -# endif - -void GC_add_to_black_list_stack(/* bits, maybe source */); -struct hblk * GC_is_black_listed(/* h, len */); - /* If there are likely to be false references */ - /* to a block starting at h of the indicated */ - /* length, then return the next plausible */ - /* starting location for h that might avoid */ - /* these false references. */ -void GC_promote_black_lists(); - /* Declare an end to a black listing phase. */ -void GC_unpromote_black_lists(); - /* Approximately undo the effect of the above. */ - /* This actually loses some information, but */ - /* only in a reasonably safe way. */ -word GC_number_stack_black_listed(/*struct hblk *start, struct hblk *endp1 */); - /* Return the number of (stack) blacklisted */ - /* blocks in the range for statistical */ - /* purposes. */ - -ptr_t GC_scratch_alloc(/*bytes*/); - /* GC internal memory allocation for */ - /* small objects. Deallocation is not */ - /* possible. */ - -/* Heap block layout maps: */ -void GC_invalidate_map(/* hdr */); - /* Remove the object map associated */ - /* with the block. This identifies */ - /* the block as invalid to the mark */ - /* routines. */ -GC_bool GC_add_map_entry(/*sz*/); - /* Add a heap block map for objects of */ - /* size sz to obj_map. */ - /* Return FALSE on failure. */ -void GC_register_displacement_inner(/*offset*/); - /* Version of GC_register_displacement */ - /* that assumes lock is already held */ - /* and signals are already disabled. */ - -/* hblk allocation: */ -void GC_new_hblk(/*size_in_words, kind*/); - /* Allocate a new heap block, and build */ - /* a free list in it. */ -struct hblk * GC_allochblk(/*size_in_words, kind*/); - /* Allocate a heap block, clear it if */ - /* for composite objects, inform */ - /* the marker that block is valid */ - /* for objects of indicated size. */ - /* sz < 0 ==> atomic. */ -void GC_freehblk(); /* Deallocate a heap block and mark it */ - /* as invalid. */ - -/* Misc GC: */ -void GC_init_inner(); -GC_bool GC_expand_hp_inner(); -void GC_start_reclaim(/*abort_if_found*/); - /* Restore unmarked objects to free */ - /* lists, or (if abort_if_found is */ - /* TRUE) report them. */ - /* Sweeping of small object pages is */ - /* largely deferred. */ -void GC_continue_reclaim(/*size, kind*/); - /* Sweep pages of the given size and */ - /* kind, as long as possible, and */ - /* as long as the corr. free list is */ - /* empty. */ -void GC_reclaim_or_delete_all(); - /* Arrange for all reclaim lists to be */ - /* empty. Judiciously choose between */ - /* sweeping and discarding each page. */ -GC_bool GC_reclaim_all(/* GC_stop_func f*/); - /* Reclaim all blocks. Abort (in a */ - /* consistent state) if f returns TRUE. */ -GC_bool GC_block_empty(/* hhdr */); /* Block completely unmarked? */ -GC_bool GC_never_stop_func(); /* Returns FALSE. */ -GC_bool GC_try_to_collect_inner(/* GC_stop_func f */); - /* Collect; caller must have acquired */ - /* lock and disabled signals. */ - /* Collection is aborted if f returns */ - /* TRUE. Returns TRUE if it completes */ - /* successfully. */ -# define GC_gcollect_inner() \ - (void) GC_try_to_collect_inner(GC_never_stop_func) -void GC_finish_collection(); /* Finish collection. Mark bits are */ - /* consistent and lock is still held. */ -GC_bool GC_collect_or_expand(/* needed_blocks */); - /* Collect or expand heap in an attempt */ - /* make the indicated number of free */ - /* blocks available. Should be called */ - /* until the blocks are available or */ - /* until it fails by returning FALSE. */ -GC_API void GC_init(); /* Initialize collector. */ -void GC_collect_a_little_inner(/* int n */); - /* Do n units worth of garbage */ - /* collection work, if appropriate. */ - /* A unit is an amount appropriate for */ - /* HBLKSIZE bytes of allocation. */ -ptr_t GC_generic_malloc(/* bytes, kind */); - /* Allocate an object of the given */ - /* kind. By default, there are only */ - /* a few kinds: composite(pointerfree), */ - /* atomic, uncollectable, etc. */ - /* We claim it's possible for clever */ - /* client code that understands GC */ - /* internals to add more, e.g. to */ - /* communicate object layout info */ - /* to the collector. */ -ptr_t GC_generic_malloc_ignore_off_page(/* bytes, kind */); - /* As above, but pointers past the */ - /* first page of the resulting object */ - /* are ignored. */ -ptr_t GC_generic_malloc_inner(/* bytes, kind */); - /* Ditto, but I already hold lock, etc. */ -ptr_t GC_generic_malloc_words_small GC_PROTO((size_t words, int kind)); - /* As above, but size in units of words */ - /* Bypasses MERGE_SIZES. Assumes */ - /* words <= MAXOBJSZ. */ -ptr_t GC_generic_malloc_inner_ignore_off_page(/* bytes, kind */); - /* Allocate an object, where */ - /* the client guarantees that there */ - /* will always be a pointer to the */ - /* beginning of the object while the */ - /* object is live. */ -ptr_t GC_allocobj(/* sz_inn_words, kind */); - /* Make the indicated */ - /* free list nonempty, and return its */ - /* head. */ - -void GC_init_headers(); -GC_bool GC_install_header(/*h*/); - /* Install a header for block h. */ - /* Return FALSE on failure. */ -GC_bool GC_install_counts(/*h, sz*/); - /* Set up forwarding counts for block */ - /* h of size sz. */ - /* Return FALSE on failure. */ -void GC_remove_header(/*h*/); - /* Remove the header for block h. */ -void GC_remove_counts(/*h, sz*/); - /* Remove forwarding counts for h. */ -hdr * GC_find_header(/*p*/); /* Debugging only. */ - -void GC_finalize(); /* Perform all indicated finalization actions */ - /* on unmarked objects. */ - /* Unreachable finalizable objects are enqueued */ - /* for processing by GC_invoke_finalizers. */ - /* Invoked with lock. */ - -void GC_add_to_heap(/*p, bytes*/); - /* Add a HBLKSIZE aligned chunk to the heap. */ - -void GC_print_obj(/* ptr_t p */); - /* P points to somewhere inside an object with */ - /* debugging info. Print a human readable */ - /* description of the object to stderr. */ -extern void (*GC_check_heap)(); - /* Check that all objects in the heap with */ - /* debugging info are intact. Print */ - /* descriptions of any that are not. */ -extern void (*GC_print_heap_obj)(/* ptr_t p */); - /* If possible print s followed by a more */ - /* detailed description of the object */ - /* referred to by p. */ - -/* Memory unmapping: */ -#ifdef USE_MUNMAP - void GC_unmap_old(void); - void GC_merge_unmapped(void); - void GC_unmap(ptr_t start, word bytes); - void GC_remap(ptr_t start, word bytes); - void GC_unmap_gap(ptr_t start1, word bytes1, ptr_t start2, word bytes2); -#endif - -/* Virtual dirty bit implementation: */ -/* Each implementation exports the following: */ -void GC_read_dirty(); /* Retrieve dirty bits. */ -GC_bool GC_page_was_dirty(/* struct hblk * h */); - /* Read retrieved dirty bits. */ -GC_bool GC_page_was_ever_dirty(/* struct hblk * h */); - /* Could the page contain valid heap pointers? */ -void GC_is_fresh(/* struct hblk * h, word number_of_blocks */); - /* Assert the region currently contains no */ - /* valid pointers. */ -void GC_write_hint(/* struct hblk * h */); - /* h is about to be written. */ -void GC_dirty_init(); - -/* Slow/general mark bit manipulation: */ -GC_API GC_bool GC_is_marked(); -void GC_clear_mark_bit(); -void GC_set_mark_bit(); - -/* Stubborn objects: */ -void GC_read_changed(); /* Analogous to GC_read_dirty */ -GC_bool GC_page_was_changed(/* h */); /* Analogous to GC_page_was_dirty */ -void GC_clean_changing_list(); /* Collect obsolete changing list entries */ -void GC_stubborn_init(); - -/* Debugging print routines: */ -void GC_print_block_list(); -void GC_print_hblkfreelist(); -void GC_print_heap_sects(); -void GC_print_static_roots(); -void GC_dump(); - -#ifdef KEEP_BACK_PTRS - void GC_store_back_pointer(ptr_t source, ptr_t dest); - void GC_marked_for_finalization(ptr_t dest); -# define GC_STORE_BACK_PTR(source, dest) GC_store_back_pointer(source, dest) -# define GC_MARKED_FOR_FINALIZATION(dest) GC_marked_for_finalization(dest) -#else -# define GC_STORE_BACK_PTR(source, dest) -# define GC_MARKED_FOR_FINALIZATION(dest) -#endif - -/* Make arguments appear live to compiler */ -# ifdef __WATCOMC__ - void GC_noop(void*, ...); -# else - GC_API void GC_noop(); -# endif - -void GC_noop1(/* word arg */); - -/* Logging and diagnostic output: */ -GC_API void GC_printf GC_PROTO((char * format, long, long, long, long, long, long)); - /* A version of printf that doesn't allocate, */ - /* is restricted to long arguments, and */ - /* (unfortunately) doesn't use varargs for */ - /* portability. Restricted to 6 args and */ - /* 1K total output length. */ - /* (We use sprintf. Hopefully that doesn't */ - /* allocate for long arguments.) */ -# define GC_printf0(f) GC_printf(f, 0l, 0l, 0l, 0l, 0l, 0l) -# define GC_printf1(f,a) GC_printf(f, (long)a, 0l, 0l, 0l, 0l, 0l) -# define GC_printf2(f,a,b) GC_printf(f, (long)a, (long)b, 0l, 0l, 0l, 0l) -# define GC_printf3(f,a,b,c) GC_printf(f, (long)a, (long)b, (long)c, 0l, 0l, 0l) -# define GC_printf4(f,a,b,c,d) GC_printf(f, (long)a, (long)b, (long)c, \ - (long)d, 0l, 0l) -# define GC_printf5(f,a,b,c,d,e) GC_printf(f, (long)a, (long)b, (long)c, \ - (long)d, (long)e, 0l) -# define GC_printf6(f,a,b,c,d,e,g) GC_printf(f, (long)a, (long)b, (long)c, \ - (long)d, (long)e, (long)g) - -void GC_err_printf(/* format, a, b, c, d, e, f */); -# define GC_err_printf0(f) GC_err_puts(f) -# define GC_err_printf1(f,a) GC_err_printf(f, (long)a, 0l, 0l, 0l, 0l, 0l) -# define GC_err_printf2(f,a,b) GC_err_printf(f, (long)a, (long)b, 0l, 0l, 0l, 0l) -# define GC_err_printf3(f,a,b,c) GC_err_printf(f, (long)a, (long)b, (long)c, \ - 0l, 0l, 0l) -# define GC_err_printf4(f,a,b,c,d) GC_err_printf(f, (long)a, (long)b, \ - (long)c, (long)d, 0l, 0l) -# define GC_err_printf5(f,a,b,c,d,e) GC_err_printf(f, (long)a, (long)b, \ - (long)c, (long)d, \ - (long)e, 0l) -# define GC_err_printf6(f,a,b,c,d,e,g) GC_err_printf(f, (long)a, (long)b, \ - (long)c, (long)d, \ - (long)e, (long)g) - /* Ditto, writes to stderr. */ - -void GC_err_puts(/* char *s */); - /* Write s to stderr, don't buffer, don't add */ - /* newlines, don't ... */ - - -# ifdef GC_ASSERTIONS -# define GC_ASSERT(expr) if(!(expr)) {\ - GC_err_printf2("Assertion failure: %s:%ld\n", \ - __FILE__, (unsigned long)__LINE__); \ - ABORT("assertion failure"); } -# else -# define GC_ASSERT(expr) -# endif - -# endif /* GC_PRIVATE_H */ diff --git a/boehm-gc/include/private/gcconfig.h b/boehm-gc/include/private/gcconfig.h deleted file mode 100644 index c9017d371a8..00000000000 --- a/boehm-gc/include/private/gcconfig.h +++ /dev/null @@ -1,1099 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. - * Copyright (c) 1996 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -#ifndef CONFIG_H - -# define CONFIG_H - -/* Machine dependent parameters. Some tuning parameters can be found */ -/* near the top of gc_private.h. */ - -/* Machine specific parts contributed by various people. See README file. */ - -/* First a unified test for Linux: */ -# if defined(linux) || defined(__linux__) -# define LINUX -# endif - -/* Determine the machine type: */ -# if defined(sun) && defined(mc68000) -# define M68K -# define SUNOS4 -# define mach_type_known -# endif -# if defined(hp9000s300) -# define M68K -# define HP -# define mach_type_known -# endif -# if defined(__OpenBSD__) && defined(m68k) -# define M68K -# define OPENBSD -# define mach_type_known -# endif -# if defined(__OpenBSD__) && defined(__sparc__) -# define SPARC -# define OPENBSD -# define mach_type_known -# endif -# if defined(__NetBSD__) && defined(m68k) -# define M68K -# define NETBSD -# define mach_type_known -# endif -# if defined(vax) -# define VAX -# ifdef ultrix -# define ULTRIX -# else -# define BSD -# endif -# define mach_type_known -# endif -# if defined(mips) || defined(__mips) -# define MIPS -# if defined(ultrix) || defined(__ultrix) || defined(__NetBSD__) -# define ULTRIX -# else -# if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) || defined(__SYSTYPE_SVR4__) -# define IRIX5 /* or IRIX 6.X */ -# else -# define RISCOS /* or IRIX 4.X */ -# endif -# endif -# define mach_type_known -# endif -# if defined(sequent) && defined(i386) -# define I386 -# define SEQUENT -# define mach_type_known -# endif -# if defined(sun) && defined(i386) -# define I386 -# define SUNOS5 -# define mach_type_known -# endif -# if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__) -# define I386 -# define OS2 -# define mach_type_known -# endif -# if defined(ibm032) -# define RT -# define mach_type_known -# endif -# if defined(sun) && (defined(sparc) || defined(__sparc)) -# define SPARC - /* Test for SunOS 5.x */ -# include <errno.h> -# ifdef ECHRNG -# define SUNOS5 -# else -# define SUNOS4 -# endif -# define mach_type_known -# endif -# if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \ - && !defined(__OpenBSD__) -# define SPARC -# define DRSNX -# define mach_type_known -# endif -# if defined(_IBMR2) -# define RS6000 -# define mach_type_known -# endif -# if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386) - /* The above test may need refinement */ -# define I386 -# if defined(_SCO_ELF) -# define SCO_ELF -# else -# define SCO -# endif -# define mach_type_known -# endif -# if defined(_AUX_SOURCE) -# define M68K -# define SYSV -# define mach_type_known -# endif -# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) \ - || defined(hppa) || defined(__hppa__) -# define HP_PA -# define mach_type_known -# endif -# if defined(LINUX) && (defined(i386) || defined(__i386__)) -# define I386 -# define mach_type_known -# endif -# if defined(LINUX) && defined(powerpc) -# define POWERPC -# define mach_type_known -# endif -# if defined(LINUX) && defined(__mc68000__) -# define M68K -# define mach_type_known -# endif -# if defined(LINUX) && defined(sparc) -# define SPARC -# define mach_type_known -# endif -# if defined(__alpha) || defined(__alpha__) -# define ALPHA -# if !defined(LINUX) -# define OSF1 /* a.k.a Digital Unix */ -# endif -# define mach_type_known -# endif -# if defined(_AMIGA) && !defined(AMIGA) -# define AMIGA -# endif -# ifdef AMIGA -# define M68K -# define mach_type_known -# endif -# if defined(THINK_C) || defined(__MWERKS__) && !defined(__powerc) -# define M68K -# define MACOS -# define mach_type_known -# endif -# if defined(__MWERKS__) && defined(__powerc) -# define POWERPC -# define MACOS -# define mach_type_known -# endif -# if defined(macosx) -# define MACOSX -# define POWERPC -# define mach_type_known -# endif -# if defined(NeXT) && defined(mc68000) -# define M68K -# define NEXT -# define mach_type_known -# endif -# if defined(NeXT) && defined(i386) -# define I386 -# define NEXT -# define mach_type_known -# endif -# if defined(__OpenBSD__) && defined(i386) -# define I386 -# define OPENBSD -# define mach_type_known -# endif -# if defined(__FreeBSD__) && defined(i386) -# define I386 -# define FREEBSD -# define mach_type_known -# endif -# if defined(__NetBSD__) && defined(i386) -# define I386 -# define NETBSD -# define mach_type_known -# endif -# if defined(bsdi) && defined(i386) -# define I386 -# define BSDI -# define mach_type_known -# endif -# if !defined(mach_type_known) && defined(__386BSD__) -# define I386 -# define THREE86BSD -# define mach_type_known -# endif -# if defined(_CX_UX) && defined(_M88K) -# define M88K -# define CX_UX -# define mach_type_known -# endif -# if defined(DGUX) -# define M88K - /* DGUX defined */ -# define mach_type_known -# endif -# if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \ - || defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__) -# define I386 -# define MSWIN32 /* or Win32s */ -# define mach_type_known -# endif -# if defined(__DJGPP__) -# define I386 -# ifndef DJGPP -# define DJGPP /* MSDOS running the DJGPP port of GCC */ -# endif -# define mach_type_known -# endif -# if defined(__CYGWIN32__) || defined(__CYGWIN__) -# define I386 -# define CYGWIN32 -# define mach_type_known -# endif -# if defined(__BORLANDC__) -# define I386 -# define MSWIN32 -# define mach_type_known -# endif -# if defined(_UTS) && !defined(mach_type_known) -# define S370 -# define UTS4 -# define mach_type_known -# endif -/* Ivan Demakov */ -# if defined(__WATCOMC__) && defined(__386__) -# define I386 -# if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW) -# if defined(__OS2__) -# define OS2 -# else -# if defined(__WINDOWS_386__) || defined(__NT__) -# define MSWIN32 -# else -# define DOS4GW -# endif -# endif -# endif -# define mach_type_known -# endif - -/* Feel free to add more clauses here */ - -/* Or manually define the machine type here. A machine type is */ -/* characterized by the architecture. Some */ -/* machine types are further subdivided by OS. */ -/* the macros ULTRIX, RISCOS, and BSD to distinguish. */ -/* Note that SGI IRIX is treated identically to RISCOS. */ -/* SYSV on an M68K actually means A/UX. */ -/* The distinction in these cases is usually the stack starting address */ -# ifndef mach_type_known - --> unknown machine type -# endif - /* Mapping is: M68K ==> Motorola 680X0 */ - /* (SUNOS4,HP,NEXT, and SYSV (A/UX), */ - /* MACOS and AMIGA variants) */ - /* I386 ==> Intel 386 */ - /* (SEQUENT, OS2, SCO, LINUX, NETBSD, */ - /* FREEBSD, THREE86BSD, MSWIN32, */ - /* BSDI,SUNOS5, NEXT, other variants) */ - /* NS32K ==> Encore Multimax */ - /* MIPS ==> R2000 or R3000 */ - /* (RISCOS, ULTRIX variants) */ - /* VAX ==> DEC VAX */ - /* (BSD, ULTRIX variants) */ - /* RS6000 ==> IBM RS/6000 AIX3.X */ - /* RT ==> IBM PC/RT */ - /* HP_PA ==> HP9000/700 & /800 */ - /* HP/UX */ - /* SPARC ==> SPARC under SunOS */ - /* (SUNOS4, SUNOS5, */ - /* DRSNX variants) */ - /* ALPHA ==> DEC Alpha */ - /* (OSF1 and LINUX variants) */ - /* M88K ==> Motorola 88XX0 */ - /* (CX_UX and DGUX) */ - /* S370 ==> 370-like machine */ - /* running Amdahl UTS4 */ - - -/* - * For each architecture and OS, the following need to be defined: - * - * CPP_WORD_SZ is a simple integer constant representing the word size. - * in bits. We assume byte addressibility, where a byte has 8 bits. - * We also assume CPP_WORD_SZ is either 32 or 64. - * (We care about the length of pointers, not hardware - * bus widths. Thus a 64 bit processor with a C compiler that uses - * 32 bit pointers should use CPP_WORD_SZ of 32, not 64. Default is 32.) - * - * MACH_TYPE is a string representation of the machine type. - * OS_TYPE is analogous for the OS. - * - * ALIGNMENT is the largest N, such that - * all pointer are guaranteed to be aligned on N byte boundaries. - * defining it to be 1 will always work, but perform poorly. - * - * DATASTART is the beginning of the data segment. - * On UNIX systems, the collector will scan the area between DATASTART - * and DATAEND for root pointers. - * - * DATAEND, if not &end. - * - * ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice - * the pointer size. - * - * STACKBOTTOM is the cool end of the stack, which is usually the - * highest address in the stack. - * Under PCR or OS/2, we have other ways of finding thread stacks. - * For each machine, the following should: - * 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and - * 2) define exactly one of - * STACKBOTTOM (should be defined to be an expression) - * HEURISTIC1 - * HEURISTIC2 - * If either of the last two macros are defined, then STACKBOTTOM is computed - * during collector startup using one of the following two heuristics: - * HEURISTIC1: Take an address inside GC_init's frame, and round it up to - * the next multiple of STACK_GRAN. - * HEURISTIC2: Take an address inside GC_init's frame, increment it repeatedly - * in small steps (decrement if STACK_GROWS_UP), and read the value - * at each location. Remember the value when the first - * Segmentation violation or Bus error is signalled. Round that - * to the nearest plausible page boundary, and use that instead - * of STACKBOTTOM. - * - * If no expression for STACKBOTTOM can be found, and neither of the above - * heuristics are usable, the collector can still be used with all of the above - * undefined, provided one of the following is done: - * 1) GC_mark_roots can be changed to somehow mark from the correct stack(s) - * without reference to STACKBOTTOM. This is appropriate for use in - * conjunction with thread packages, since there will be multiple stacks. - * (Allocating thread stacks in the heap, and treating them as ordinary - * heap data objects is also possible as a last resort. However, this is - * likely to introduce significant amounts of excess storage retention - * unless the dead parts of the thread stacks are periodically cleared.) - * 2) Client code may set GC_stackbottom before calling any GC_ routines. - * If the author of the client code controls the main program, this is - * easily accomplished by introducing a new main program, setting - * GC_stackbottom to the address of a local variable, and then calling - * the original main program. The new main program would read something - * like: - * - * # include "gc_private.h" - * - * main(argc, argv, envp) - * int argc; - * char **argv, **envp; - * { - * int dummy; - * - * GC_stackbottom = (ptr_t)(&dummy); - * return(real_main(argc, argv, envp)); - * } - * - * - * Each architecture may also define the style of virtual dirty bit - * implementation to be used: - * MPROTECT_VDB: Write protect the heap and catch faults. - * PROC_VDB: Use the SVR4 /proc primitives to read dirty bits. - * - * An architecture may define DYNAMIC_LOADING if dynamic_load.c - * defined GC_register_dynamic_libraries() for the architecture. - */ - - -# define STACK_GRAN 0x1000000 -# ifdef M68K -# define MACH_TYPE "M68K" -# define ALIGNMENT 2 -# ifdef OPENBSD -# define OS_TYPE "OPENBSD" -# define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# endif -# ifdef NETBSD -# define OS_TYPE "NETBSD" -# define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# define STACKBOTTOM ((ptr_t)0xf0000000) -# define MPROTECT_VDB -# ifdef __ELF__ -# define DYNAMIC_LOADING - extern char **__environ; -# define DATASTART ((ptr_t)(&__environ)) - /* hideous kludge: __environ is the first */ - /* word in crt0.o, and delimits the start */ - /* of the data segment, no matter which */ - /* ld options were passed through. */ - /* We could use _etext instead, but that */ - /* would include .rodata, which may */ - /* contain large read-only data tables */ - /* that we'd rather not scan. */ - extern int _end; -# define DATAEND (&_end) -# else - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# endif -# endif -# ifdef SUNOS4 -# define OS_TYPE "SUNOS4" - extern char etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ffff) & ~0x1ffff)) -# define HEURISTIC1 /* differs */ -# define DYNAMIC_LOADING -# endif -# ifdef HP -# define OS_TYPE "HP" - extern char etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# define STACKBOTTOM ((ptr_t) 0xffeffffc) - /* empirically determined. seems to work. */ -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) -# endif -# ifdef SYSV -# define OS_TYPE "SYSV" - extern etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \ - & ~0x3fffff) \ - +((word)&etext & 0x1fff)) - /* This only works for shared-text binaries with magic number 0413. - The other sorts of SysV binaries put the data at the end of the text, - in which case the default of &etext would work. Unfortunately, - handling both would require having the magic-number available. - -- Parag - */ -# define STACKBOTTOM ((ptr_t)0xFFFFFFFE) - /* The stack starts at the top of memory, but */ - /* 0x0 cannot be used as setjump_test complains */ - /* that the stack direction is incorrect. Two */ - /* bytes down from 0x0 should be safe enough. */ - /* --Parag */ -# include <sys/mmu.h> -# define GETPAGESIZE() PAGESIZE /* Is this still right? */ -# endif -# ifdef AMIGA -# define OS_TYPE "AMIGA" - /* STACKBOTTOM and DATASTART handled specially */ - /* in os_dep.c */ -# define DATAEND /* not needed */ -# define GETPAGESIZE() 4096 -# endif -# ifdef MACOS -# ifndef __LOWMEM__ -# include <LowMem.h> -# endif -# define OS_TYPE "MACOS" - /* see os_dep.c for details of global data segments. */ -# define STACKBOTTOM ((ptr_t) LMGetCurStackBase()) -# define DATAEND /* not needed */ -# define GETPAGESIZE() 4096 -# endif -# ifdef NEXT -# define OS_TYPE "NEXT" -# define DATASTART ((ptr_t) get_etext()) -# define STACKBOTTOM ((ptr_t) 0x4000000) -# define DATAEND /* not needed */ -# endif -# endif - -# ifdef POWERPC -# define MACH_TYPE "POWERPC" -# ifdef MACOS -# define ALIGNMENT 2 /* Still necessary? Could it be 4? */ -# ifndef __LOWMEM__ -# include <LowMem.h> -# endif -# define OS_TYPE "MACOS" - /* see os_dep.c for details of global data segments. */ -# define STACKBOTTOM ((ptr_t) LMGetCurStackBase()) -# define DATAEND /* not needed */ -# endif -# ifdef LINUX -# define ALIGNMENT 4 /* Guess. Can someone verify? */ - /* This was 2, but that didn't sound right. */ -# define OS_TYPE "LINUX" -# define HEURISTIC1 -# undef STACK_GRAN -# define STACK_GRAN 0x10000000 - /* Stack usually starts at 0x80000000 */ -# define DATASTART GC_data_start - extern int _end; -# define DATAEND (&_end) -# endif -# ifdef MACOSX -# define ALIGNMENT 4 -# define OS_TYPE "MACOSX" -# define DATASTART ((ptr_t) get_etext()) -# define STACKBOTTOM ((ptr_t) 0xc0000000) -# define DATAEND /* not needed */ -# endif -# endif - -# ifdef VAX -# define MACH_TYPE "VAX" -# define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */ - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# ifdef BSD -# define OS_TYPE "BSD" -# define HEURISTIC1 - /* HEURISTIC2 may be OK, but it's hard to test. */ -# endif -# ifdef ULTRIX -# define OS_TYPE "ULTRIX" -# define STACKBOTTOM ((ptr_t) 0x7fffc800) -# endif -# endif - -# ifdef RT -# define MACH_TYPE "RT" -# define ALIGNMENT 4 -# define DATASTART ((ptr_t) 0x10000000) -# define STACKBOTTOM ((ptr_t) 0x1fffd800) -# endif - -# ifdef SPARC -# define MACH_TYPE "SPARC" -# define ALIGNMENT 4 /* Required by hardware */ -# define ALIGN_DOUBLE - extern int etext; -# ifdef SUNOS5 -# define OS_TYPE "SUNOS5" - extern int _etext; - extern int _end; - extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) -# define DATAEND (&_end) -# ifndef USE_MMAP -# define USE_MMAP -# endif -# ifdef USE_MMAP -# define HEAP_START (ptr_t)0x40000000 -# else -# define HEAP_START DATAEND -# endif -# define PROC_VDB -/* HEURISTIC1 reportedly no longer works under 2.7. Thus we */ -/* switched to HEURISTIC2, eventhough it creates some debugging */ -/* issues. */ -# define HEURISTIC2 -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGESIZE) - /* getpagesize() appeared to be missing from at least one */ - /* Solaris 5.4 installation. Weird. */ -# define DYNAMIC_LOADING -# endif -# ifdef SUNOS4 -# define OS_TYPE "SUNOS4" - /* [If you have a weak stomach, don't read this.] */ - /* We would like to use: */ -/* # define DATASTART ((ptr_t)((((word) (&etext)) + 0x1fff) & ~0x1fff)) */ - /* This fails occasionally, due to an ancient, but very */ - /* persistent ld bug. &etext is set 32 bytes too high. */ - /* We instead read the text segment size from the a.out */ - /* header, which happens to be mapped into our address space */ - /* at the start of the text segment. The detective work here */ - /* was done by Robert Ehrlich, Manuel Serrano, and Bernard */ - /* Serpette of INRIA. */ - /* This assumes ZMAGIC, i.e. demand-loadable executables. */ -# define TEXTSTART 0x2000 -# define DATASTART ((ptr_t)(*(int *)(TEXTSTART+0x4)+TEXTSTART)) -# define MPROTECT_VDB -# define HEURISTIC1 -# define DYNAMIC_LOADING -# endif -# ifdef DRSNX -# define CPP_WORDSZ 32 -# define OS_TYPE "DRSNX" - extern char * GC_SysVGetDataStart(); - extern int etext; -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext) -# define MPROTECT_VDB -# define STACKBOTTOM ((ptr_t) 0xdfff0000) -# define DYNAMIC_LOADING -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# ifdef __ELF__ -# define DATASTART GC_data_start -# define DYNAMIC_LOADING -# else - Linux Sparc non elf ? -# endif - extern int _end; -# define DATAEND (&_end) -# define SVR4 -# define STACKBOTTOM ((ptr_t) 0xf0000000) -# endif -# ifdef OPENBSD -# define OS_TYPE "OPENBSD" -# define STACKBOTTOM ((ptr_t) 0xf8000000) -# define DATASTART ((ptr_t)(&etext)) -# endif -# endif - -# ifdef I386 -# define MACH_TYPE "I386" -# define ALIGNMENT 4 /* Appears to hold for all "32 bit" compilers */ - /* except Borland. The -a4 option fixes */ - /* Borland. */ - /* Ivan Demakov: For Watcom the option is -zp4. */ -# ifndef SMALL_CONFIG -# define ALIGN_DOUBLE /* Not strictly necessary, but may give speed */ - /* improvement on Pentiums. */ -# endif -# ifdef SEQUENT -# define OS_TYPE "SEQUENT" - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# define STACKBOTTOM ((ptr_t) 0x3ffff000) -# endif -# ifdef SUNOS5 -# define OS_TYPE "SUNOS5" - extern int etext, _start; - extern char * GC_SysVGetDataStart(); -# define DATASTART GC_SysVGetDataStart(0x1000, &etext) -# define STACKBOTTOM ((ptr_t)(&_start)) -/** At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */ -/*# define PROC_VDB*/ -# define DYNAMIC_LOADING -# ifndef USE_MMAP -# define USE_MMAP -# endif -# ifdef USE_MMAP -# define HEAP_START (ptr_t)0x40000000 -# else -# define HEAP_START DATAEND -# endif -# endif -# ifdef SCO -# define OS_TYPE "SCO" - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \ - & ~0x3fffff) \ - +((word)&etext & 0xfff)) -# define STACKBOTTOM ((ptr_t) 0x7ffffffc) -# endif -# ifdef SCO_ELF -# define OS_TYPE "SCO_ELF" - extern int etext; -# define DATASTART ((ptr_t)(&etext)) -# define STACKBOTTOM ((ptr_t) 0x08048000) -# define DYNAMIC_LOADING -# define ELF_CLASS ELFCLASS32 -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# define HEURISTIC1 -# undef STACK_GRAN -# define STACK_GRAN 0x10000000 - /* STACKBOTTOM is usually 0xc0000000, but this changes with */ - /* different kernel configurations. In particular, systems */ - /* with 2GB physical memory will usually move the user */ - /* address space limit, and hence initial SP to 0x80000000. */ -# if !defined(LINUX_THREADS) || !defined(REDIRECT_MALLOC) -# define MPROTECT_VDB -# else - /* We seem to get random errors in incremental mode, */ - /* possibly because Linux threads is itself a malloc client */ - /* and can't deal with the signals. */ -# endif -# ifdef __ELF__ -# define DYNAMIC_LOADING -# ifdef UNDEFINED /* includes ro data */ - extern int _etext; -# define DATASTART ((ptr_t)((((word) (&_etext)) + 0xfff) & ~0xfff)) -# endif -# include <features.h> -# if defined(__GLIBC__) && __GLIBC__ >= 2 - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) -# else - extern char **__environ; -# define DATASTART ((ptr_t)(&__environ)) - /* hideous kludge: __environ is the first */ - /* word in crt0.o, and delimits the start */ - /* of the data segment, no matter which */ - /* ld options were passed through. */ - /* We could use _etext instead, but that */ - /* would include .rodata, which may */ - /* contain large read-only data tables */ - /* that we'd rather not scan. */ -# endif - extern int _end; -# define DATAEND (&_end) -# else - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) -# endif -# endif -# ifdef CYGWIN32 -# define OS_TYPE "CYGWIN32" - extern int _data_start__; - extern int _data_end__; - extern int _bss_start__; - extern int _bss_end__; - /* For binutils 2.9.1, we have */ - /* DATASTART = _data_start__ */ - /* DATAEND = _bss_end__ */ - /* whereas for some earlier versions it was */ - /* DATASTART = _bss_start__ */ - /* DATAEND = _data_end__ */ - /* To get it right for both, we take the */ - /* minumum/maximum of the two. */ -# define MAX(x,y) ((x) > (y) ? (x) : (y)) -# define MIN(x,y) ((x) < (y) ? (x) : (y)) -# define DATASTART ((ptr_t) MIN(&_data_start__, &_bss_start__)) -# define DATAEND ((ptr_t) MAX(&_data_end__, &_bss_end__)) -# undef STACK_GRAN -# define STACK_GRAN 0x10000 -# define HEURISTIC1 -# endif -# ifdef OS2 -# define OS_TYPE "OS2" - /* STACKBOTTOM and DATASTART are handled specially in */ - /* os_dep.c. OS2 actually has the right */ - /* system call! */ -# define DATAEND /* not needed */ -# endif -# ifdef MSWIN32 -# define OS_TYPE "MSWIN32" - /* STACKBOTTOM and DATASTART are handled specially in */ - /* os_dep.c. */ -# ifndef __WATCOMC__ -# define MPROTECT_VDB -# endif -# define DATAEND /* not needed */ -# endif -# ifdef DJGPP -# define OS_TYPE "DJGPP" -# include "stubinfo.h" - extern int etext; - extern int _stklen; - extern int __djgpp_stack_limit; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ff) & ~0x1ff)) -/* # define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \ - + _stklen)) */ -# define STACKBOTTOM ((ptr_t)((word) __djgpp_stack_limit + _stklen)) - /* This may not be right. */ -# endif -# ifdef OPENBSD -# define OS_TYPE "OPENBSD" -# endif -# ifdef FREEBSD -# define OS_TYPE "FREEBSD" -# define MPROTECT_VDB -# endif -# ifdef NETBSD -# define OS_TYPE "NETBSD" -# endif -# ifdef THREE86BSD -# define OS_TYPE "THREE86BSD" -# endif -# ifdef BSDI -# define OS_TYPE "BSDI" -# endif -# if defined(OPENBSD) || defined(FREEBSD) || defined(NETBSD) \ - || defined(THREE86BSD) || defined(BSDI) -# define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) -# endif -# ifdef NEXT -# define OS_TYPE "NEXT" -# define DATASTART ((ptr_t) get_etext()) -# define STACKBOTTOM ((ptr_t)0xc0000000) -# define DATAEND /* not needed */ -# endif -# ifdef DOS4GW -# define OS_TYPE "DOS4GW" - extern long __nullarea; - extern char _end; - extern char *_STACKTOP; - /* Depending on calling conventions Watcom C either precedes - or does not precedes with undescore names of C-variables. - Make sure startup code variables always have the same names. */ - #pragma aux __nullarea "*"; - #pragma aux _end "*"; -# define STACKBOTTOM ((ptr_t) _STACKTOP) - /* confused? me too. */ -# define DATASTART ((ptr_t) &__nullarea) -# define DATAEND ((ptr_t) &_end) -# endif -# endif - -# ifdef NS32K -# define MACH_TYPE "NS32K" -# define ALIGNMENT 4 - extern char **environ; -# define DATASTART ((ptr_t)(&environ)) - /* hideous kludge: environ is the first */ - /* word in crt0.o, and delimits the start */ - /* of the data segment, no matter which */ - /* ld options were passed through. */ -# define STACKBOTTOM ((ptr_t) 0xfffff000) /* for Encore */ -# endif - -# ifdef MIPS -# define MACH_TYPE "MIPS" -# ifndef IRIX5 -# define DATASTART (ptr_t)0x10000000 - /* Could probably be slightly higher since */ - /* startup code allocates lots of stuff. */ -# else - extern int _fdata; -# define DATASTART ((ptr_t)(&_fdata)) -# ifdef USE_MMAP -# define HEAP_START (ptr_t)0x30000000 -# else -# define HEAP_START DATASTART -# endif - /* Lowest plausible heap address. */ - /* In the MMAP case, we map there. */ - /* In either case it is used to identify */ - /* heap sections so they're not */ - /* considered as roots. */ -# endif /* IRIX5 */ -# define HEURISTIC2 -/* # define STACKBOTTOM ((ptr_t)0x7fff8000) sometimes also works. */ -# ifdef ULTRIX -# define OS_TYPE "ULTRIX" -# define ALIGNMENT 4 -# endif -# ifdef RISCOS -# define OS_TYPE "RISCOS" -# define ALIGNMENT 4 /* Required by hardware */ -# endif -# ifdef IRIX5 -# define OS_TYPE "IRIX5" -# define MPROTECT_VDB -# ifdef _MIPS_SZPTR -# define CPP_WORDSZ _MIPS_SZPTR -# define ALIGNMENT (_MIPS_SZPTR/8) -# if CPP_WORDSZ != 64 -# define ALIGN_DOUBLE -# endif -# else -# define ALIGNMENT 4 -# define ALIGN_DOUBLE -# endif -# define DYNAMIC_LOADING -# endif -# endif - -# ifdef RS6000 -# define MACH_TYPE "RS6000" -# define ALIGNMENT 4 -# define DATASTART ((ptr_t)0x20000000) - extern int errno; -# define STACKBOTTOM ((ptr_t)((ulong)&errno)) -# define DYNAMIC_LOADING - /* For really old versions of AIX, this may have to be removed. */ -# endif - -# ifdef HP_PA -# define MACH_TYPE "HP_PA" -# define ALIGNMENT 4 -# define ALIGN_DOUBLE - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) -# if 0 - /* The following appears to work for 7xx systems running HP/UX */ - /* 9.xx Furthermore, it might result in much faster */ - /* collections than HEURISTIC2, which may involve scanning */ - /* segments that directly precede the stack. It is not the */ - /* default, since it may not work on older machine/OS */ - /* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */ - /* this.) */ -# define STACKBOTTOM ((ptr_t) 0x7b033000) /* from /etc/conf/h/param.h */ -# else -# define HEURISTIC2 -# endif -# define STACK_GROWS_UP -# define DYNAMIC_LOADING -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) - /* They misspelled the Posix macro? */ -# endif - -# ifdef ALPHA -# define MACH_TYPE "ALPHA" -# define ALIGNMENT 8 -# ifdef OSF1 -# define OS_TYPE "OSF1" -# define DATASTART ((ptr_t) 0x140000000) - extern _end; -# define DATAEND ((ptr_t) &_end) -# define HEURISTIC2 - /* Normally HEURISTIC2 is too conervative, since */ - /* the text segment immediately follows the stack. */ - /* Hence we give an upper pound. */ - extern int __start; -# define HEURISTIC2_LIMIT ((ptr_t)((word)(&__start) & ~(getpagesize()-1))) -# define CPP_WORDSZ 64 -# define MPROTECT_VDB -# define DYNAMIC_LOADING -# endif -# ifdef LINUX -# define OS_TYPE "LINUX" -# define CPP_WORDSZ 64 -# define STACKBOTTOM ((ptr_t) 0x120000000) -# ifdef __ELF__ -# if 0 - /* __data_start apparently disappeared in some recent releases. */ - extern int __data_start; -# define DATASTART &__data_start -# endif -# define DATASTART GC_data_start -# define DYNAMIC_LOADING -# else -# define DATASTART ((ptr_t) 0x140000000) -# endif - extern int _end; -# define DATAEND (&_end) -# define MPROTECT_VDB - /* Has only been superficially tested. May not */ - /* work on all versions. */ -# endif -# endif - -# ifdef M88K -# define MACH_TYPE "M88K" -# define ALIGNMENT 4 -# define ALIGN_DOUBLE - extern int etext; -# ifdef CX_UX -# define OS_TYPE "CX_UX" -# define DATASTART ((((word)&etext + 0x3fffff) & ~0x3fffff) + 0x10000) -# endif -# ifdef DGUX -# define OS_TYPE "DGUX" - extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext) -# endif -# define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */ -# endif - -# ifdef S370 -# define MACH_TYPE "S370" -# define OS_TYPE "UTS4" -# define ALIGNMENT 4 /* Required by hardware */ - extern int etext; - extern int _etext; - extern int _end; - extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) -# define DATAEND (&_end) -# define HEURISTIC2 -# endif - -# ifndef STACK_GROWS_UP -# define STACK_GROWS_DOWN -# endif - -# ifndef CPP_WORDSZ -# define CPP_WORDSZ 32 -# endif - -# ifndef OS_TYPE -# define OS_TYPE "" -# endif - -# ifndef DATAEND - extern int end; -# define DATAEND (&end) -# endif - -# if defined(SVR4) && !defined(GETPAGESIZE) -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGESIZE) -# endif - -# ifndef GETPAGESIZE -# if defined(SUNOS5) || defined(IRIX5) -# include <unistd.h> -# endif -# define GETPAGESIZE() getpagesize() -# endif - -# if defined(SUNOS5) || defined(DRSNX) || defined(UTS4) - /* OS has SVR4 generic features. Probably others also qualify. */ -# define SVR4 -# endif - -# if defined(SUNOS5) || defined(DRSNX) - /* OS has SUNOS5 style semi-undocumented interface to dynamic */ - /* loader. */ -# define SUNOS5DL - /* OS has SUNOS5 style signal handlers. */ -# define SUNOS5SIGS -# endif - -# if CPP_WORDSZ != 32 && CPP_WORDSZ != 64 - -> bad word size -# endif - -# ifdef PCR -# undef DYNAMIC_LOADING -# undef STACKBOTTOM -# undef HEURISTIC1 -# undef HEURISTIC2 -# undef PROC_VDB -# undef MPROTECT_VDB -# define PCR_VDB -# endif - -# ifdef SRC_M3 -/* Postponed for now. */ -# undef PROC_VDB -# undef MPROTECT_VDB -# endif - -# ifdef SMALL_CONFIG -/* Presumably not worth the space it takes. */ -# undef PROC_VDB -# undef MPROTECT_VDB -# endif - -# ifdef USE_MUNMAP -# undef MPROTECT_VDB /* Can't deal with address space holes. */ -# endif - -# if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB) -# define DEFAULT_VDB -# endif - -# if defined(_SOLARIS_PTHREADS) && !defined(SOLARIS_THREADS) -# define SOLARIS_THREADS -# endif -# if defined(IRIX_THREADS) && !defined(IRIX5) ---> inconsistent configuration -# endif -# if defined(IRIX_JDK_THREADS) && !defined(IRIX5) ---> inconsistent configuration -# endif -# if defined(LINUX_THREADS) && !defined(LINUX) ---> inconsistent configuration -# endif -# if defined(SOLARIS_THREADS) && !defined(SUNOS5) ---> inconsistent configuration -# endif -# if defined(PCR) || defined(SRC_M3) || \ - defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \ - defined(IRIX_THREADS) || defined(LINUX_THREADS) || \ - defined(IRIX_JDK_THREADS) -# define THREADS -# endif - -# if defined(HP_PA) || defined(M88K) || defined(POWERPC) \ - || (defined(I386) && defined(OS2)) || defined(UTS4) || defined(LINT) - /* Use setjmp based hack to mark from callee-save registers. */ -# define USE_GENERIC_PUSH_REGS -# endif -# if defined(SPARC) && !defined(LINUX) -# define SAVE_CALL_CHAIN -# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ - /* include assembly code to do it well. */ -# endif - -# endif diff --git a/boehm-gc/include/weakpointer.h b/boehm-gc/include/weakpointer.h deleted file mode 100644 index 84906b00a68..00000000000 --- a/boehm-gc/include/weakpointer.h +++ /dev/null @@ -1,221 +0,0 @@ -#ifndef _weakpointer_h_ -#define _weakpointer_h_ - -/**************************************************************************** - -WeakPointer and CleanUp - - Copyright (c) 1991 by Xerox Corporation. All rights reserved. - - THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - - Permission is hereby granted to copy this code for any purpose, - provided the above notices are retained on all copies. - - Last modified on Mon Jul 17 18:16:01 PDT 1995 by ellis - -****************************************************************************/ - -/**************************************************************************** - -WeakPointer - -A weak pointer is a pointer to a heap-allocated object that doesn't -prevent the object from being garbage collected. Weak pointers can be -used to track which objects haven't yet been reclaimed by the -collector. A weak pointer is deactivated when the collector discovers -its referent object is unreachable by normal pointers (reachability -and deactivation are defined more precisely below). A deactivated weak -pointer remains deactivated forever. - -****************************************************************************/ - - -template< class T > class WeakPointer { -public: - -WeakPointer( T* t = 0 ) - /* Constructs a weak pointer for *t. t may be null. It is an error - if t is non-null and *t is not a collected object. */ - {impl = _WeakPointer_New( t );} - -T* Pointer() - /* wp.Pointer() returns a pointer to the referent object of wp or - null if wp has been deactivated (because its referent object - has been discovered unreachable by the collector). */ - {return (T*) _WeakPointer_Pointer( this->impl );} - -int operator==( WeakPointer< T > wp2 ) - /* Given weak pointers wp1 and wp2, if wp1 == wp2, then wp1 and - wp2 refer to the same object. If wp1 != wp2, then either wp1 - and wp2 don't refer to the same object, or if they do, one or - both of them has been deactivated. (Note: If objects t1 and t2 - are never made reachable by their clean-up functions, then - WeakPointer<T>(t1) == WeakPointer<T>(t2) if and only t1 == t2.) */ - {return _WeakPointer_Equal( this->impl, wp2.impl );} - -int Hash() - /* Returns a hash code suitable for use by multiplicative- and - division-based hash tables. If wp1 == wp2, then wp1.Hash() == - wp2.Hash(). */ - {return _WeakPointer_Hash( this->impl );} - -private: -void* impl; -}; - -/***************************************************************************** - -CleanUp - -A garbage-collected object can have an associated clean-up function -that will be invoked some time after the collector discovers the -object is unreachable via normal pointers. Clean-up functions can be -used to release resources such as open-file handles or window handles -when their containing objects become unreachable. If a C++ object has -a non-empty explicit destructor (i.e. it contains programmer-written -code), the destructor will be automatically registered as the object's -initial clean-up function. - -There is no guarantee that the collector will detect every unreachable -object (though it will find almost all of them). Clients should not -rely on clean-up to cause some action to occur immediately -- clean-up -is only a mechanism for improving resource usage. - -Every object with a clean-up function also has a clean-up queue. When -the collector finds the object is unreachable, it enqueues it on its -queue. The clean-up function is applied when the object is removed -from the queue. By default, objects are enqueued on the garbage -collector's queue, and the collector removes all objects from its -queue after each collection. If a client supplies another queue for -objects, it is his responsibility to remove objects (and cause their -functions to be called) by polling it periodically. - -Clean-up queues allow clean-up functions accessing global data to -synchronize with the main program. Garbage collection can occur at any -time, and clean-ups invoked by the collector might access data in an -inconsistent state. A client can control this by defining an explicit -queue for objects and polling it at safe points. - -The following definitions are used by the specification below: - -Given a pointer t to a collected object, the base object BO(t) is the -value returned by new when it created the object. (Because of multiple -inheritance, t and BO(t) may not be the same address.) - -A weak pointer wp references an object *t if BO(wp.Pointer()) == -BO(t). - -***************************************************************************/ - -template< class T, class Data > class CleanUp { -public: - -static void Set( T* t, void c( Data* d, T* t ), Data* d = 0 ) - /* Sets the clean-up function of object BO(t) to be <c, d>, - replacing any previously defined clean-up function for BO(t); c - and d can be null, but t cannot. Sets the clean-up queue for - BO(t) to be the collector's queue. When t is removed from its - clean-up queue, its clean-up will be applied by calling c(d, - t). It is an error if *t is not a collected object. */ - {_CleanUp_Set( t, c, d );} - -static void Call( T* t ) - /* Sets the new clean-up function for BO(t) to be null and, if the - old one is non-null, calls it immediately, even if BO(t) is - still reachable. Deactivates any weak pointers to BO(t). */ - {_CleanUp_Call( t );} - -class Queue {public: - Queue() - /* Constructs a new queue. */ - {this->head = _CleanUp_Queue_NewHead();} - - void Set( T* t ) - /* q.Set(t) sets the clean-up queue of BO(t) to be q. */ - {_CleanUp_Queue_Set( this->head, t );} - - int Call() - /* If q is non-empty, q.Call() removes the first object and - calls its clean-up function; does nothing if q is - empty. Returns true if there are more objects in the - queue. */ - {return _CleanUp_Queue_Call( this->head );} - - private: - void* head; - }; -}; - -/********************************************************************** - -Reachability and Clean-up - -An object O is reachable if it can be reached via a non-empty path of -normal pointers from the registers, stacks, global variables, or an -object with a non-null clean-up function (including O itself), -ignoring pointers from an object to itself. - -This definition of reachability ensures that if object B is accessible -from object A (and not vice versa) and if both A and B have clean-up -functions, then A will always be cleaned up before B. Note that as -long as an object with a clean-up function is contained in a cycle of -pointers, it will always be reachable and will never be cleaned up or -collected. - -When the collector finds an unreachable object with a null clean-up -function, it atomically deactivates all weak pointers referencing the -object and recycles its storage. If object B is accessible from object -A via a path of normal pointers, A will be discovered unreachable no -later than B, and a weak pointer to A will be deactivated no later -than a weak pointer to B. - -When the collector finds an unreachable object with a non-null -clean-up function, the collector atomically deactivates all weak -pointers referencing the object, redefines its clean-up function to be -null, and enqueues it on its clean-up queue. The object then becomes -reachable again and remains reachable at least until its clean-up -function executes. - -The clean-up function is assured that its argument is the only -accessible pointer to the object. Nothing prevents the function from -redefining the object's clean-up function or making the object -reachable again (for example, by storing the pointer in a global -variable). - -If the clean-up function does not make its object reachable again and -does not redefine its clean-up function, then the object will be -collected by a subsequent collection (because the object remains -unreachable and now has a null clean-up function). If the clean-up -function does make its object reachable again and a clean-up function -is subsequently redefined for the object, then the new clean-up -function will be invoked the next time the collector finds the object -unreachable. - -Note that a destructor for a collected object cannot safely redefine a -clean-up function for its object, since after the destructor executes, -the object has been destroyed into "raw memory". (In most -implementations, destroying an object mutates its vtbl.) - -Finally, note that calling delete t on a collected object first -deactivates any weak pointers to t and then invokes its clean-up -function (destructor). - -**********************************************************************/ - -extern "C" { - void* _WeakPointer_New( void* t ); - void* _WeakPointer_Pointer( void* wp ); - int _WeakPointer_Equal( void* wp1, void* wp2 ); - int _WeakPointer_Hash( void* wp ); - void _CleanUp_Set( void* t, void (*c)( void* d, void* t ), void* d ); - void _CleanUp_Call( void* t ); - void* _CleanUp_Queue_NewHead (); - void _CleanUp_Queue_Set( void* h, void* t ); - int _CleanUp_Queue_Call( void* h ); -} - -#endif /* _weakpointer_h_ */ - - |