This source file includes following definitions.
- pthread_mutex_unlock
#include "pthread.h"
#include "implement.h"
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);
}