diff options
author | Ahmad Sharif <asharif@google.com> | 2012-12-07 02:35:37 +0000 |
---|---|---|
committer | Ahmad Sharif <asharif@google.com> | 2012-12-07 02:35:37 +0000 |
commit | ffc1fd234389c5c1532456b466290fcd11b1d64e (patch) | |
tree | 1cf1383712d491c6aff1529ec1f33ee9c904feb4 | |
parent | a4c1d8312ba3d403ef6a7de09b2754b107ae6eab (diff) |
2012-12-03 Ahmad Sharif <asharif@google.com>
Backport r185231 from trunk.
2012-03-12 Richard Guenther <rguenther@suse.de>
* gthr.h (__GTHREAD_MUTEX_INIT_FUNCTION): Adjust specification.
* gthr-posix.h (__GTHREAD_MUTEX_INIT_FUNCTION): Define.
(__gthread_mutex_init_function): New function.
* gthr-single.h (__GTHREAD_MUTEX_INIT_FUNCTION): Define.
PR gcov/49484
* libgcov.c: Include gthr.h.
(__gcov_flush_mx): New global variable.
(init_mx, init_mx_once): New functions.
(__gcov_flush): Protect self with a mutex.
(__gcov_fork): Re-initialize mutex after forking.
* unwind-dw2-fde.c: Change condition under which to use
__GTHREAD_MUTEX_INIT_FUNCTION.
git-svn-id: https://gcc.gnu.org/svn/gcc/branches/google/gcc-4_7-mobile@194279 138bc75d-0d04-0410-961f-82ee72b054a4
-rw-r--r-- | libgcc/ChangeLog.google-4_7 | 20 | ||||
-rw-r--r-- | libgcc/gthr-posix.h | 9 | ||||
-rw-r--r-- | libgcc/gthr-single.h | 1 | ||||
-rw-r--r-- | libgcc/gthr.h | 9 | ||||
-rw-r--r-- | libgcc/libgcov.c | 32 | ||||
-rw-r--r-- | libgcc/unwind-dw2-fde.c | 5 |
6 files changed, 67 insertions, 9 deletions
diff --git a/libgcc/ChangeLog.google-4_7 b/libgcc/ChangeLog.google-4_7 index 91f00817f7d..d35dc3f7ee3 100644 --- a/libgcc/ChangeLog.google-4_7 +++ b/libgcc/ChangeLog.google-4_7 @@ -1,3 +1,23 @@ +2012-12-03 Ahmad Sharif <asharif@google.com> + + Backport r185231 from trunk. + + 2012-03-12 Richard Guenther <rguenther@suse.de> + + * gthr.h (__GTHREAD_MUTEX_INIT_FUNCTION): Adjust specification. + * gthr-posix.h (__GTHREAD_MUTEX_INIT_FUNCTION): Define. + (__gthread_mutex_init_function): New function. + * gthr-single.h (__GTHREAD_MUTEX_INIT_FUNCTION): Define. + + PR gcov/49484 + * libgcov.c: Include gthr.h. + (__gcov_flush_mx): New global variable. + (init_mx, init_mx_once): New functions. + (__gcov_flush): Protect self with a mutex. + (__gcov_fork): Re-initialize mutex after forking. + * unwind-dw2-fde.c: Change condition under which to use + __GTHREAD_MUTEX_INIT_FUNCTION. + 2012-08-13 Chris Manghane <cmang@google.com> Backport r190247 from google/main diff --git a/libgcc/gthr-posix.h b/libgcc/gthr-posix.h index a935e929184..6c9af1a4765 100644 --- a/libgcc/gthr-posix.h +++ b/libgcc/gthr-posix.h @@ -63,6 +63,7 @@ typedef struct timespec __gthread_time_t; #define __GTHREAD_HAS_COND 1 #define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function #define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT #if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) #define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER @@ -754,6 +755,14 @@ __gthread_mutex_init_function (__gthread_mutex_t *__mutex) #endif static inline int +__gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_init) (__mutex, NULL); + return 0; +} + +static inline int __gthread_mutex_destroy (__gthread_mutex_t *__mutex) { if (__gthread_active_p ()) diff --git a/libgcc/gthr-single.h b/libgcc/gthr-single.h index 357528ad1f1..87b7579e899 100644 --- a/libgcc/gthr-single.h +++ b/libgcc/gthr-single.h @@ -36,6 +36,7 @@ typedef int __gthread_recursive_mutex_t; #define __GTHREAD_ONCE_INIT 0 #define __GTHREAD_MUTEX_INIT 0 +#define __GTHREAD_MUTEX_INIT_FUNCTION (mx) #define __GTHREAD_RECURSIVE_MUTEX_INIT 0 #define UNUSED __attribute__((unused)) diff --git a/libgcc/gthr.h b/libgcc/gthr.h index 03a3ee1d84f..813abe1e57e 100644 --- a/libgcc/gthr.h +++ b/libgcc/gthr.h @@ -52,11 +52,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see to initialize __gthread_mutex_t to get a fast non-recursive mutex. __GTHREAD_MUTEX_INIT_FUNCTION - some systems can't initialize a mutex without a - function call. On such systems, define this to a - function which looks like this: + to initialize __gthread_mutex_t to get a fast + non-recursive mutex. + Define this to a function which looks like this: void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *) - Don't define __GTHREAD_MUTEX_INIT in this case + Some systems can't initialize a mutex without a + function call. Don't define __GTHREAD_MUTEX_INIT in this case. __GTHREAD_RECURSIVE_MUTEX_INIT __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION as above, but for a recursive mutex. diff --git a/libgcc/libgcov.c b/libgcc/libgcov.c index bd3f4552565..f28df5a4f15 100644 --- a/libgcc/libgcov.c +++ b/libgcc/libgcov.c @@ -48,6 +48,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #include "tm.h" #endif /* __KERNEL__ */ #include "libgcc_tm.h" +#include "gthr.h" #if 1 #define THREAD_PREFIX __thread @@ -689,6 +690,25 @@ __gcov_init (struct gcov_info *info) info->version = 0; } +#ifdef __GTHREAD_MUTEX_INIT +ATTRIBUTE_HIDDEN __gthread_mutex_t __gcov_flush_mx = __GTHREAD_MUTEX_INIT; +#define init_mx_once() +#else +__gthread_mutex_t __gcov_flush_mx ATTRIBUTE_HIDDEN; + +static void +init_mx (void) +{ + __GTHREAD_MUTEX_INIT_FUNCTION (&mx); +} +static void +init_mx_once (void) +{ + static __gthread_once_t once = __GTHREAD_ONCE_INIT; + __gthread_once (&once, init_mx); +} +#endif + /* Called before fork or exec - write out profile information gathered so far and reset it to zero. This avoids duplication or loss of the profile information gathered so far. */ @@ -696,8 +716,13 @@ __gcov_init (struct gcov_info *info) void __gcov_flush (void) { + init_mx_once (); + __gthread_mutex_lock (&__gcov_flush_mx); + gcov_exit (); gcov_clear (); + + __gthread_mutex_unlock (&__gcov_flush_mx); } #else /* __GCOV_KERNEL__ */ @@ -1867,8 +1892,13 @@ __gcov_ior_profiler (gcov_type *counters, gcov_type value) pid_t __gcov_fork (void) { + pid_t pid; + extern __gthread_mutex_t __gcov_flush_mx; __gcov_flush (); - return fork (); + pid = fork (); + if (pid == 0) + __GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_flush_mx); + return pid; } #endif diff --git a/libgcc/unwind-dw2-fde.c b/libgcc/unwind-dw2-fde.c index 7a783329f7c..54eaebac27e 100644 --- a/libgcc/unwind-dw2-fde.c +++ b/libgcc/unwind-dw2-fde.c @@ -47,11 +47,10 @@ static struct object *seen_objects; #ifdef __GTHREAD_MUTEX_INIT static __gthread_mutex_t object_mutex = __GTHREAD_MUTEX_INIT; +#define init_object_mutex_once() #else static __gthread_mutex_t object_mutex; -#endif -#ifdef __GTHREAD_MUTEX_INIT_FUNCTION static void init_object_mutex (void) { @@ -64,8 +63,6 @@ init_object_mutex_once (void) static __gthread_once_t once = __GTHREAD_ONCE_INIT; __gthread_once (&once, init_object_mutex); } -#else -#define init_object_mutex_once() #endif /* Called from crtbegin.o to register the unwind info for an object. */ |