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Signal condition variables with the mutex held. Destroy condition variables 

before their mutexes.
This commit is contained in:
Kristján Valur Jónsson 2012-06-05 22:17:42 +00:00
parent 902274e948
commit 187aa54516
2 changed files with 14 additions and 10 deletions
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9
Python/ceval_gil.h
View File

@ -313,13 +313,14 @@ static void create_gil(void)
static void destroy_gil(void)
{
/* some pthread-like implementations tie the mutex to the cond
* and must have the cond destroyed first.
*/
COND_FINI(gil_cond);
MUTEX_FINI(gil_mutex);
#ifdef FORCE_SWITCHING
MUTEX_FINI(switch_mutex);
#endif
COND_FINI(gil_cond);
#ifdef FORCE_SWITCHING
COND_FINI(switch_cond);
MUTEX_FINI(switch_mutex);
#endif
_Py_atomic_store_explicit(&gil_locked, -1, _Py_memory_order_release);
_Py_ANNOTATE_RWLOCK_DESTROY(&gil_locked);

15
Python/thread_pthread.h
View File

@ -443,12 +443,15 @@ PyThread_free_lock(PyThread_type_lock lock)
dprintf(("PyThread_free_lock(%p) called\n", lock));
status = pthread_mutex_destroy( &thelock->mut );
CHECK_STATUS("pthread_mutex_destroy");
/* some pthread-like implementations tie the mutex to the cond
* and must have the cond destroyed first.
*/
status = pthread_cond_destroy( &thelock->lock_released );
CHECK_STATUS("pthread_cond_destroy");
status = pthread_mutex_destroy( &thelock->mut );
CHECK_STATUS("pthread_mutex_destroy");
free((void *)thelock);
}
@ -531,12 +534,12 @@ PyThread_release_lock(PyThread_type_lock lock)
thelock->locked = 0;
status = pthread_mutex_unlock( &thelock->mut );
CHECK_STATUS("pthread_mutex_unlock[3]");
/* wake up someone (anyone, if any) waiting on the lock */
status = pthread_cond_signal( &thelock->lock_released );
CHECK_STATUS("pthread_cond_signal");
status = pthread_mutex_unlock( &thelock->mut );
CHECK_STATUS("pthread_mutex_unlock[3]");
}
#endif /* USE_SEMAPHORES */