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(struct loc_Thread, empth_sem_wait, empth_sem_signal) [WIN32]:

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Remove the semaphore mutex and replace with hThreadMutex instead
This commit is contained in:
Ron Koenderink 2007-01-18 14:28:23 +00:00
parent 68662df96a
commit 71b46e770b
1 changed files with 6 additions and 23 deletions
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27
src/lib/empthread/ntthread.c
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@ -97,13 +97,12 @@ struct loc_Thread {
*/
struct loc_Sem {
/* The semaphore name, passed in at create time. */
char szName[17];
/* An exclusion semaphore for this sem. */
HANDLE hMutex;
/* An Event that the thread(s) will sleep on. */
HANDLE hEvent;
/* The count variable */
int count;
};
@ -664,7 +663,6 @@ empth_sem_create(char *name, int cnt)
memset(pSem, 0, sizeof(pSem));
strncpy(pSem->szName, name, sizeof(pSem->szName) - 1);
pSem->hMutex = CreateMutex(NULL, FALSE, NULL);
pSem->hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
pSem->count = cnt;
@ -681,14 +679,9 @@ empth_sem_signal(empth_sem_t *pSem)
{
loc_debug("signal on semaphore %s:%d", pSem->szName, pSem->count);
/* Wait for the Semaphore */
WaitForSingleObject(pSem->hMutex, INFINITE);
if (pSem->count++ < 0) {
SetEvent(pSem->hEvent);
}
ReleaseMutex(pSem->hMutex);
}
/************************
@ -702,23 +695,13 @@ empth_sem_wait(empth_sem_t *pSem)
empth_t *pThread = TlsGetValue(dwTLSIndex);
loc_debug("wait on semaphore %s:%d", pSem->szName, pSem->count);
if (--pSem->count < 0) {
/* Remove the thread from the running state. */
loc_BlockThisThread();
/* Wait for the Semaphore */
WaitForSingleObject(pSem->hMutex, INFINITE);
if (--pSem->count < 0) {
loc_debug("blocking");
ReleaseMutex(pSem->hMutex);
WaitForSingleObject(pSem->hEvent, INFINITE);
loc_RunThisThread(pSem->hEvent);
loc_debug("waking up");
} else
ReleaseMutex(pSem->hMutex);
loc_RunThisThread(NULL);
}
}
empth_rwlock_t *