BOOL
pthread_win32_thread_detach_np ()
{
if (ptw32_processInitialized)
{
/*
* Don't use pthread_self() - to avoid creating an implicit POSIX thread handle
* unnecessarily.
*/
ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
if (sp != NULL) // otherwise Win32 thread with no implicit POSIX handle.
{
ptw32_mcs_local_node_t stateLock;
ptw32_callUserDestroyRoutines (sp->ptHandle);
ptw32_mcs_lock_acquire (&sp->stateLock, &stateLock);
sp->state = PThreadStateLast;
/*
* If the thread is joinable at this point then it MUST be joined
* or detached explicitly by the application.
*/
ptw32_mcs_lock_release (&stateLock);
/*
* Robust Mutexes
*/
while (sp->robustMxList != NULL)
{
pthread_mutex_t mx = sp->robustMxList->mx;
ptw32_robust_mutex_remove(&mx, sp);
(void) PTW32_INTERLOCKED_EXCHANGE_LONG(
(PTW32_INTERLOCKED_LONGPTR)&mx->robustNode->stateInconsistent,
(PTW32_INTERLOCKED_LONG)-1);
/*
* If there are no waiters then the next thread to block will
* sleep, wake up immediately and then go back to sleep.
* See pthread_mutex_lock.c.
*/
SetEvent(mx->event);
}
if (sp->detachState == PTHREAD_CREATE_DETACHED)
{
ptw32_threadDestroy (sp->ptHandle);
if (ptw32_selfThreadKey)
{
TlsSetValue (ptw32_selfThreadKey->key, NULL);
}
}
}
}
return TRUE;
}
int
pthread_mutex_unlock (pthread_mutex_t * mutex)
{
int result = 0;
int kind;
pthread_mutex_t mx;
/*
* Let the system deal with invalid pointers.
*/
mx = *mutex;
/*
* If the thread calling us holds the mutex then there is no
* race condition. If another thread holds the
* lock then we shouldn't be in here.
*/
if (mx < PTHREAD_ERRORCHECK_MUTEX_INITIALIZER)
{
kind = mx->kind;
if (kind >= 0)
{
if (kind == PTHREAD_MUTEX_NORMAL)
{
LONG idx;
idx = (LONG) PTW32_INTERLOCKED_EXCHANGE_LONG ((PTW32_INTERLOCKED_LONGPTR)&mx->lock_idx,
(PTW32_INTERLOCKED_LONG)0);
if (idx != 0)
{
if (idx < 0)
{
/*
* Someone may be waiting on that mutex.
*/
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
}
else
{
if (pthread_equal (to_pthread(mx->ownerThread), pthread_self()))
{
if (kind != PTHREAD_MUTEX_RECURSIVE
|| 0 == --mx->recursive_count)
{
mx->ownerThread.p = NULL;
if ((LONG) PTW32_INTERLOCKED_EXCHANGE_LONG ((PTW32_INTERLOCKED_LONGPTR)&mx->lock_idx,
(PTW32_INTERLOCKED_LONG)0) < 0L)
{
/* Someone may be waiting on that mutex */
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
}
else
{
result = EPERM;
}
}
}
else
{
/* Robust types */
pthread_t self = pthread_self();
kind = -kind - 1; /* Convert to non-robust range */
/*
* The thread must own the lock regardless of type if the mutex
* is robust.
*/
if (pthread_equal (to_pthread(mx->ownerThread), self))
{
PTW32_INTERLOCKED_COMPARE_EXCHANGE_LONG((PTW32_INTERLOCKED_LONGPTR) &mx->robustNode->stateInconsistent,
(PTW32_INTERLOCKED_LONG)PTW32_ROBUST_NOTRECOVERABLE,
(PTW32_INTERLOCKED_LONG)PTW32_ROBUST_INCONSISTENT);
if (PTHREAD_MUTEX_NORMAL == kind)
{
ptw32_robust_mutex_remove(mutex, NULL);
if ((LONG) PTW32_INTERLOCKED_EXCHANGE_LONG((PTW32_INTERLOCKED_LONGPTR) &mx->lock_idx,
(PTW32_INTERLOCKED_LONG) 0) < 0)
{
/*
* Someone may be waiting on that mutex.
*/
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
else
{
if (kind != PTHREAD_MUTEX_RECURSIVE
|| 0 == --mx->recursive_count)
{
ptw32_robust_mutex_remove(mutex, NULL);
if ((LONG) PTW32_INTERLOCKED_EXCHANGE_LONG((PTW32_INTERLOCKED_LONGPTR) &mx->lock_idx,
(PTW32_INTERLOCKED_LONG) 0) < 0)
{
/*
* Someone may be waiting on that mutex.
*/
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
}
}
else
{
result = EPERM;
}
}
}
else if (mx != PTHREAD_MUTEX_INITIALIZER)
{
result = EINVAL;
}
return (result);
}
int
pthread_mutex_unlock (pthread_mutex_t * mutex)
{
int result = 0;
int kind;
pthread_mutex_t mx;
mx = *mutex;
if (mx < PTHREAD_ERRORCHECK_MUTEX_INITIALIZER)
{
kind = mx->kind;
if (kind >= 0)
{
if (kind == PTHREAD_MUTEX_NORMAL)
{
LONG idx;
idx = (LONG) PTW32_INTERLOCKED_EXCHANGE_LONG ((PTW32_INTERLOCKED_LONGPTR)&mx->lock_idx,
(PTW32_INTERLOCKED_LONG)0);
if (idx != 0)
{
if (idx < 0)
{
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
}
else
{
if (pthread_equal (mx->ownerThread, pthread_self()))
{
if (kind != PTHREAD_MUTEX_RECURSIVE
|| 0 == --mx->recursive_count)
{
mx->ownerThread.p = NULL;
if ((LONG) PTW32_INTERLOCKED_EXCHANGE_LONG ((PTW32_INTERLOCKED_LONGPTR)&mx->lock_idx,
(PTW32_INTERLOCKED_LONG)0) < 0L)
{
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
}
else
{
result = EPERM;
}
}
}
else
{
pthread_t self = pthread_self();
kind = -kind - 1;
if (pthread_equal (mx->ownerThread, self))
{
PTW32_INTERLOCKED_COMPARE_EXCHANGE_LONG((PTW32_INTERLOCKED_LONGPTR) &mx->robustNode->stateInconsistent,
(PTW32_INTERLOCKED_LONG)PTW32_ROBUST_NOTRECOVERABLE,
(PTW32_INTERLOCKED_LONG)PTW32_ROBUST_INCONSISTENT);
if (PTHREAD_MUTEX_NORMAL == kind)
{
ptw32_robust_mutex_remove(mutex, NULL);
if ((LONG) PTW32_INTERLOCKED_EXCHANGE_LONG((PTW32_INTERLOCKED_LONGPTR) &mx->lock_idx,
(PTW32_INTERLOCKED_LONG) 0) < 0)
{
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
else
{
if (kind != PTHREAD_MUTEX_RECURSIVE
|| 0 == --mx->recursive_count)
{
ptw32_robust_mutex_remove(mutex, NULL);
if ((LONG) PTW32_INTERLOCKED_EXCHANGE_LONG((PTW32_INTERLOCKED_LONGPTR) &mx->lock_idx,
(PTW32_INTERLOCKED_LONG) 0) < 0)
{
if (SetEvent (mx->event) == 0)
{
result = EINVAL;
}
}
}
}
}
else
{
result = EPERM;
}
}
}
else if (mx != PTHREAD_MUTEX_INITIALIZER)
{
result = EINVAL;
}
return (result);
}
