X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dff9e15c44ab6340d27215957c56fa72fad246a2..02f6c8f2138d26350576c29cbbbe863ce15c9a2b:/src/xbt/xbt_os_thread.c diff --git a/src/xbt/xbt_os_thread.c b/src/xbt/xbt_os_thread.c index f827c4a52e..4fcb70cdd9 100644 --- a/src/xbt/xbt_os_thread.c +++ b/src/xbt/xbt_os_thread.c @@ -1,11 +1,9 @@ -/* $Id$ */ - /* xbt_os_thread -- portability layer over the pthread API */ /* Used in RL to get win/lin portability, and in SG when CONTEXT_THREAD */ /* in SG, when using CONTEXT_UCONTEXT, xbt_os_thread_stub is used instead */ -/* Copyright 2006,2007 Malek Cherier, Martin Quinson - * All right reserved. */ +/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team. + * All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ @@ -74,7 +72,7 @@ static void _os_thread_ex_terminate(xbt_ex_t * e) /* FIXME: there should be a configuration variable to choose to kill everyone or only this one */ } -void xbt_os_thread_mod_init(void) +void xbt_os_thread_mod_preinit(void) { int errcode; @@ -103,7 +101,7 @@ void xbt_os_thread_mod_init(void) } -void xbt_os_thread_mod_exit(void) +void xbt_os_thread_mod_postexit(void) { /* FIXME: don't try to free our key on shutdown. Valgrind detects no leak if we don't, and whine if we try to */ @@ -118,6 +116,16 @@ void xbt_os_thread_mod_exit(void) #ifndef HAVE_SEM_WAIT xbt_os_mutex_destroy(next_sem_ID_lock); #endif + + /* Restore the default exception setup */ + __xbt_ex_ctx = &__xbt_ex_ctx_default; + __xbt_ex_terminate = &__xbt_ex_terminate_default; +} + +int xbt_os_thread_atfork(void (*prepare)(void), + void (*parent)(void), void (*child)(void)) +{ + return pthread_atfork(prepare, parent, child); } static void *wrapper_start_routine(void *s) @@ -160,8 +168,8 @@ const char *xbt_os_thread_name(xbt_os_thread_t t) const char *xbt_os_thread_self_name(void) { - xbt_os_thread_t self = xbt_os_thread_self(); - return self ? self->name : "main"; + xbt_os_thread_t me = xbt_os_thread_self(); + return me ? me->name : "main"; } void xbt_os_thread_join(xbt_os_thread_t thread, void **thread_return) @@ -261,8 +269,9 @@ void xbt_os_mutex_timedacquire(xbt_os_mutex_t mutex, double delay) case ETIMEDOUT: THROW1(timeout_error, 0, "mutex %p not ready", mutex); default: - THROW2(system_error, errcode, "xbt_mutex_timedacquire(%p) failed: %s", - mutex, strerror(errcode)); + THROW2(system_error, errcode, + "xbt_mutex_timedacquire(%p) failed: %s", mutex, + strerror(errcode)); } @@ -278,7 +287,7 @@ void xbt_os_mutex_timedacquire(xbt_os_mutex_t mutex, double delay) errcode = pthread_mutex_timedlock(&(mutex->m), &ts_end); -#else /* Well, let's reimplement it since those lazy libc dudes didn't */ +#else /* Well, let's reimplement it since those lazy libc dudes didn't */ double start = xbt_os_time(); do { errcode = pthread_mutex_trylock(&(mutex->m)); @@ -289,7 +298,7 @@ void xbt_os_mutex_timedacquire(xbt_os_mutex_t mutex, double delay) if (errcode == EBUSY) errcode = ETIMEDOUT; -#endif /* HAVE_MUTEX_TIMEDLOCK */ +#endif /* HAVE_MUTEX_TIMEDLOCK */ switch (errcode) { case 0: @@ -445,7 +454,7 @@ xbt_os_sem_t xbt_os_sem_init(unsigned int value) THROW1(system_error, errno, "sem_init() failed: %s", strerror(errno)); res->ps = &(res->s); -#else /* damn, no sem_init(). Reimplement it */ +#else /* damn, no sem_init(). Reimplement it */ xbt_os_mutex_acquire(next_sem_ID_lock); res->name = bprintf("/%d.%d", (*xbt_getpid) (), ++next_sem_ID); @@ -462,7 +471,8 @@ xbt_os_sem_t xbt_os_sem_init(unsigned int value) /* Remove the name from the semaphore namespace: we never join on it */ if (sem_unlink(res->name) < 0) - THROW1(system_error, errno, "sem_unlink() failed: %s", strerror(errno)); + THROW1(system_error, errno, "sem_unlink() failed: %s", + strerror(errno)); #endif @@ -495,8 +505,9 @@ void xbt_os_sem_timedacquire(xbt_os_sem_t sem, double delay) case ETIMEDOUT: THROW1(timeout_error, 0, "semaphore %p not ready", sem); default: - THROW2(system_error, errcode, "xbt_os_sem_timedacquire(%p) failed: %s", - sem, strerror(errcode)); + THROW2(system_error, errcode, + "xbt_os_sem_timedacquire(%p) failed: %s", sem, + strerror(errcode)); } } else { @@ -509,7 +520,7 @@ void xbt_os_sem_timedacquire(xbt_os_sem_t sem, double delay) DEBUG2("sem_timedwait(%p,%p)", sem->ps, &ts_end); errcode = sem_timedwait(sem->s, &ts_end); -#else /* Okay, reimplement this function then */ +#else /* Okay, reimplement this function then */ double start = xbt_os_time(); do { errcode = sem_trywait(sem->ps); @@ -527,7 +538,8 @@ void xbt_os_sem_timedacquire(xbt_os_sem_t sem, double delay) case ETIMEDOUT: THROW2(timeout_error, delay, - "semaphore %p wasn't signaled before timeout (%f)", sem, delay); + "semaphore %p wasn't signaled before timeout (%f)", sem, + delay); default: THROW3(system_error, errcode, "sem_timedwait(%p,%f) failed: %s", sem, @@ -551,10 +563,9 @@ void xbt_os_sem_destroy(xbt_os_sem_t sem) THROW0(arg_error, EINVAL, "Cannot destroy the NULL sempahore"); #ifdef HAVE_SEM_INIT - if (sem_destroy(sem->ps)) - <0) - THROW1(system_error, errno, "sem_destroy() failed: %s", - strerror(errno)); + if (sem_destroy(sem->ps) < 0) + THROW1(system_error, errno, "sem_destroy() failed: %s", + strerror(errno)); #else if (sem_close(sem->ps) < 0) THROW1(system_error, errno, "sem_close() failed: %s", strerror(errno)); @@ -567,15 +578,17 @@ void xbt_os_sem_destroy(xbt_os_sem_t sem) void xbt_os_sem_get_value(xbt_os_sem_t sem, int *svalue) { if (!sem) - THROW0(arg_error, EINVAL, "Cannot get the value of the NULL semaphore"); + THROW0(arg_error, EINVAL, + "Cannot get the value of the NULL semaphore"); if (sem_getvalue(&(sem->s), svalue) < 0) - THROW1(system_error, errno, "sem_getvalue() failed: %s", strerror(errno)); + THROW1(system_error, errno, "sem_getvalue() failed: %s", + strerror(errno)); } /* ********************************* WINDOWS IMPLEMENTATION ************************************ */ -#elif defined(WIN32) +#elif defined(_XBT_WIN32) #include @@ -598,12 +611,12 @@ typedef struct xbt_os_thread_ { /* key to the TLS containing the xbt_os_thread_t structure */ static unsigned long xbt_self_thread_key; -void xbt_os_thread_mod_init(void) +void xbt_os_thread_mod_preinit(void) { xbt_self_thread_key = TlsAlloc(); } -void xbt_os_thread_mod_exit(void) +void xbt_os_thread_mod_postexit(void) { if (!TlsFree(xbt_self_thread_key)) @@ -611,6 +624,12 @@ void xbt_os_thread_mod_exit(void) "TlsFree() failed to cleanup the thread submodule"); } +int xbt_os_thread_atfork(void (*prepare)(void), + void (*parent)(void), void (*child)(void)) +{ + return 0; +} + static DWORD WINAPI wrapper_start_routine(void *s) { xbt_os_thread_t t = (xbt_os_thread_t) s; @@ -665,12 +684,14 @@ void xbt_os_thread_join(xbt_os_thread_t thread, void **thread_return) { if (WAIT_OBJECT_0 != WaitForSingleObject(thread->handle, INFINITE)) - THROW0(system_error, (int) GetLastError(), "WaitForSingleObject failed"); + THROW0(system_error, (int) GetLastError(), + "WaitForSingleObject failed"); if (thread_return) { if (!GetExitCodeThread(thread->handle, (DWORD *) (*thread_return))) - THROW0(system_error, (int) GetLastError(), "GetExitCodeThread failed"); + THROW0(system_error, (int) GetLastError(), + "GetExitCodeThread failed"); } CloseHandle(thread->handle); @@ -860,8 +881,8 @@ void xbt_os_cond_timedwait(xbt_os_cond_t cond, xbt_os_mutex_t mutex, if (delay < 0) { xbt_os_cond_wait(cond, mutex); } else { - DEBUG3("xbt_cond_timedwait(%p,%p,%lu)", &(cond->events), &(mutex->lock), - end); + DEBUG3("xbt_cond_timedwait(%p,%p,%lu)", &(cond->events), + &(mutex->lock), end); /* lock the threads counter and increment it */ EnterCriticalSection(&cond->waiters_count_lock); @@ -997,8 +1018,8 @@ void xbt_os_sem_acquire(xbt_os_sem_t sem) /* wait failure */ if (WAIT_OBJECT_0 != WaitForSingleObject(sem->h, INFINITE)) - THROW1(system_error, GetLastError(), "WaitForSingleObject() failed: %s", - strerror(GetLastError())); + THROW1(system_error, GetLastError(), + "WaitForSingleObject() failed: %s", strerror(GetLastError())); EnterCriticalSection(&(sem->value_lock)); sem->value--; LeaveCriticalSection(&(sem->value_lock)); @@ -1074,7 +1095,8 @@ void xbt_os_sem_destroy(xbt_os_sem_t sem) void xbt_os_sem_get_value(xbt_os_sem_t sem, int *svalue) { if (!sem) - THROW0(arg_error, EINVAL, "Cannot get the value of the NULL semaphore"); + THROW0(arg_error, EINVAL, + "Cannot get the value of the NULL semaphore"); EnterCriticalSection(&(sem->value_lock)); *svalue = sem->value;