diff options
author | (no author) <(no author)@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-02-23 22:04:18 +0000 |
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committer | (no author) <(no author)@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-02-23 22:04:18 +0000 |
commit | caa2579055a1c25bb7be5846c562b5d1dc15f9fb (patch) | |
tree | 71467886a0e23d335b9a1cbbab9680d475db8695 /libiberty | |
parent | 305b595aa6d44656ebfadaaf3117a3df7bfc883f (diff) |
This commit was manufactured by cvs2svn to create branch
'tree-ssa-20020619-branch'.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/tree-ssa-20020619-branch@63335 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libiberty')
-rw-r--r-- | libiberty/acconfig.h | 3 | ||||
-rw-r--r-- | libiberty/lrealpath.c | 128 | ||||
-rw-r--r-- | libiberty/physmem.c | 227 |
3 files changed, 358 insertions, 0 deletions
diff --git a/libiberty/acconfig.h b/libiberty/acconfig.h new file mode 100644 index 00000000000..364cb41da7c --- /dev/null +++ b/libiberty/acconfig.h @@ -0,0 +1,3 @@ +/* Define to `unsigned long' if <sys/types.h> doesn't define. */ +#undef uintptr_t + diff --git a/libiberty/lrealpath.c b/libiberty/lrealpath.c new file mode 100644 index 00000000000..b001b38ef66 --- /dev/null +++ b/libiberty/lrealpath.c @@ -0,0 +1,128 @@ +/* Libiberty realpath. Like realpath, but more consistent behavior. + Based on gdb_realpath from GDB. + + Copyright 2003 Free Software Foundation, Inc. + + This file is part of the libiberty library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* + +@deftypefn Replacement {const char*} lrealpath (const char *@var{name}) + +Given a pointer to a string containing a pathname, returns a canonical +version of the filename. Symlinks will be resolved, and ``.'' and ``..'' +components will be simplified. The returned value will be allocated using +@code{malloc}, or @code{NULL} will be returned on a memory allocation error. + +@end deftypefn + +*/ + +#include "config.h" +#include "ansidecl.h" +#include "libiberty.h" + +#ifdef HAVE_LIMITS_H +#include <limits.h> +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_STRING_H +#include <string.h> +#endif + +/* On GNU libc systems the declaration is only visible with _GNU_SOURCE. */ +#if defined(HAVE_CANONICALIZE_FILE_NAME) \ + && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) +extern char *canonicalize_file_name (const char *); +#endif + +#if defined(HAVE_REALPATH) +# if defined (PATH_MAX) +# define REALPATH_LIMIT PATH_MAX +# else +# if defined (MAXPATHLEN) +# define REALPATH_LIMIT MAXPATHLEN +# endif +# endif +#endif + +char * +lrealpath (filename) + const char *filename; +{ + /* Method 1: The system has a compile time upper bound on a filename + path. Use that and realpath() to canonicalize the name. This is + the most common case. Note that, if there isn't a compile time + upper bound, you want to avoid realpath() at all costs. */ +#if defined(REALPATH_LIMIT) + { + char buf[REALPATH_LIMIT]; + const char *rp = realpath (filename, buf); + if (rp == NULL) + rp = filename; + return strdup (rp); + } +#endif /* REALPATH_LIMIT */ + + /* Method 2: The host system (i.e., GNU) has the function + canonicalize_file_name() which malloc's a chunk of memory and + returns that, use that. */ +#if defined(HAVE_CANONICALIZE_FILE_NAME) + { + char *rp = canonicalize_file_name (filename); + if (rp == NULL) + return strdup (filename); + else + return rp; + } +#endif + + /* Method 3: Now we're getting desperate! The system doesn't have a + compile time buffer size and no alternative function. Query the + OS, using pathconf(), for the buffer limit. Care is needed + though, some systems do not limit PATH_MAX (return -1 for + pathconf()) making it impossible to pass a correctly sized buffer + to realpath() (it could always overflow). On those systems, we + skip this. */ +#if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) + { + /* Find out the max path size. */ + long path_max = pathconf ("/", _PC_PATH_MAX); + if (path_max > 0) + { + /* PATH_MAX is bounded. */ + char *buf, *rp, *ret; + buf = malloc (path_max); + if (buf == NULL) + return NULL; + rp = realpath (filename, buf); + ret = strdup (rp ? rp : filename); + free (buf); + return ret; + } + } +#endif + + /* This system is a lost cause, just duplicate the filename. */ + return strdup (filename); +} diff --git a/libiberty/physmem.c b/libiberty/physmem.c new file mode 100644 index 00000000000..80fdd7975e9 --- /dev/null +++ b/libiberty/physmem.c @@ -0,0 +1,227 @@ +/* Calculate the size of physical memory. + Copyright 2000, 2001, 2003 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Paul Eggert. */ + +#if HAVE_CONFIG_H +# include <config.h> +#endif + +#if HAVE_UNISTD_H +# include <unistd.h> +#endif + +#if HAVE_SYS_PSTAT_H +# include <sys/pstat.h> +#endif + +#if HAVE_SYS_SYSMP_H +# include <sys/sysmp.h> +#endif + +#if HAVE_SYS_SYSINFO_H && HAVE_MACHINE_HAL_SYSINFO_H +# include <sys/sysinfo.h> +# include <machine/hal_sysinfo.h> +#endif + +#if HAVE_SYS_TABLE_H +# include <sys/table.h> +#endif + +#include <sys/types.h> + +#if HAVE_SYS_PARAM_H +# include <sys/param.h> +#endif + +#if HAVE_SYS_SYSCTL_H +# include <sys/sysctl.h> +#endif + +#if HAVE_SYS_SYSTEMCFG_H +# include <sys/systemcfg.h> +#endif + +#include "libiberty.h" + +/* Return the total amount of physical memory. */ +double +physmem_total () +{ +#if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE + { + double pages = sysconf (_SC_PHYS_PAGES); + double pagesize = sysconf (_SC_PAGESIZE); + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } +#endif + +#if HAVE_PSTAT_GETSTATIC + { /* This works on hpux11. */ + struct pst_static pss; + if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0)) + { + double pages = pss.physical_memory; + double pagesize = pss.page_size; + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } +#endif + +#if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE + { /* This works on irix6. */ + struct rminfo realmem; + if (sysmp (MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0) + { + double pagesize = sysconf (_SC_PAGESIZE); + double pages = realmem.physmem; + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } +#endif + +#if HAVE_GETSYSINFO + { /* This works on Tru64 UNIX V4/5. */ + int physmem; + + if (getsysinfo (GSI_PHYSMEM, (caddr_t) &physmem, sizeof (physmem), + NULL, NULL, NULL) == 1) + { + double kbytes = physmem; + + if (0 <= kbytes) + return kbytes * 1024.0; + } + } +#endif + +#if HAVE_SYSCTL && defined HW_PHYSMEM + { /* This works on *bsd and darwin. */ + unsigned int physmem; + size_t len = sizeof(physmem); + static int mib[2] = {CTL_HW, HW_PHYSMEM}; + + if (sysctl(mib, ARRAY_SIZE(mib), &physmem, &len, NULL, 0) == 0 + && len == sizeof (physmem)) + return (double)physmem; + } +#endif + +#if HAVE__SYSTEM_CONFIGURATION + /* This works on AIX. */ + return _system_configuration.physmem; +#endif + + /* Return 0 if we can't determine the value. */ + return 0; +} + +/* Return the amount of physical memory available. */ +double +physmem_available () +{ +#if defined _SC_AVPHYS_PAGES && defined _SC_PAGESIZE + { + double pages = sysconf (_SC_AVPHYS_PAGES); + double pagesize = sysconf (_SC_PAGESIZE); + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } +#endif + +#if HAVE_PSTAT_GETSTATIC && HAVE_PSTAT_GETDYNAMIC + { /* This works on hpux11. */ + struct pst_static pss; + struct pst_dynamic psd; + if (0 <= pstat_getstatic (&pss, sizeof pss, 1, 0) + && 0 <= pstat_getdynamic (&psd, sizeof psd, 1, 0)) + { + double pages = psd.psd_free; + double pagesize = pss.page_size; + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } +#endif + +#if HAVE_SYSMP && defined MP_SAGET && defined MPSA_RMINFO && defined _SC_PAGESIZE + { /* This works on irix6. */ + struct rminfo realmem; + if (sysmp (MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0) + { + double pagesize = sysconf (_SC_PAGESIZE); + double pages = realmem.availrmem; + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } +#endif + +#if HAVE_TABLE && HAVE_SYS_TABLE_H + { /* This works on Tru64 UNIX V4/5. */ + struct tbl_vmstats vmstats; + + if (table (TBL_VMSTATS, 0, &vmstats, 1, sizeof (vmstats)) == 1) + { + double pages = vmstats.free_count; + double pagesize = vmstats.pagesize; + + if (0 <= pages && 0 <= pagesize) + return pages * pagesize; + } + } +#endif + +#if HAVE_SYSCTL && defined HW_USERMEM + { /* This works on *bsd and darwin. */ + unsigned int usermem; + size_t len = sizeof(usermem); + static int mib[2] = {CTL_HW, HW_USERMEM}; + + if (sysctl(mib, ARRAY_SIZE(mib), &usermem, &len, NULL, 0) == 0 + && len == sizeof (usermem)) + return (double)usermem; + } +#endif + + /* Guess 25% of physical memory. */ + return physmem_total () / 4; +} + + +#if DEBUG + +# include <stdio.h> +# include <stdlib.h> + +int +main () +{ + printf ("%12.f %12.f\n", physmem_total (), physmem_available ()); + exit (0); +} + +#endif /* DEBUG */ + +/* +Local Variables: +compile-command: "gcc -DDEBUG -DHAVE_CONFIG_H -I.. -g -O -Wall -W physmem.c" +End: +*/ |