C++ (Cpp) d_pthread_cond_timedwait Examples

Example #1

File: threads.c Project: newgene/rsyslogd-mongo

/* terminate a thread via the non-cancel interface
 * This is a separate function as it involves a bit more of code.
 * rgerhads, 2009-10-15
 */
static inline rsRetVal
thrdTerminateNonCancel(thrdInfo_t *pThis)
{
	struct timespec tTimeout;
	int ret;
	DEFiRet;
	assert(pThis != NULL);

	DBGPRINTF("request term via SIGTTIN for input thread 0x%x\n", (unsigned) pThis->thrdID);
	pThis->bShallStop = TRUE;
	do {
		d_pthread_mutex_lock(&pThis->mutThrd);
		pthread_kill(pThis->thrdID, SIGTTIN);
		timeoutComp(&tTimeout, 10); /* a fixed 10ms timeout, do after lock (may take long!) */
		ret = d_pthread_cond_timedwait(&pThis->condThrdTerm, &pThis->mutThrd, &tTimeout);
		d_pthread_mutex_unlock(&pThis->mutThrd);
		if(Debug) {
			if(ret == ETIMEDOUT) {
				dbgprintf("input thread term: had a timeout waiting on thread termination\n");
			} else if(ret == 0) {
				dbgprintf("input thread term: thread returned normally and is terminated\n");
			} else {
				char errStr[1024];
				int err = errno;
				rs_strerror_r(err, errStr, sizeof(errStr));
				dbgprintf("input thread term: cond_wait returned with error %d: %s\n",
					  err, errStr);
			}
		}
	} while(pThis->bIsActive);
	DBGPRINTF("non-cancel input thread termination succeeded for thread 0x%x\n", (unsigned) pThis->thrdID);

	RETiRet;
}

Example #2

File: threads.c Project: janzizazizka/rsyslog

/* terminate a thread via the non-cancel interface
 * This is a separate function as it involves a bit more of code.
 * rgerhads, 2009-10-15
 */
static inline rsRetVal
thrdTerminateNonCancel(thrdInfo_t *pThis)
{
	struct timespec tTimeout;
	int ret;
	int was_active;
	DEFiRet;
	assert(pThis != NULL);

	DBGPRINTF("request term via SIGTTIN for input thread '%s' 0x%x\n",
		  pThis->name, (unsigned) pThis->thrdID);

	pThis->bShallStop = RSTRUE;
	timeoutComp(&tTimeout, 1000); /* a fixed 1sec timeout */
	d_pthread_mutex_lock(&pThis->mutThrd);
	was_active = pThis->bIsActive;
	while(was_active) {
		pthread_kill(pThis->thrdID, SIGTTIN);
		ret = d_pthread_cond_timedwait(&pThis->condThrdTerm, &pThis->mutThrd, &tTimeout);
		if(ret == ETIMEDOUT) {
			DBGPRINTF("input thread term: timeout expired waiting on thread %s termination - canceling\n",
				pThis->name);
			pthread_cancel(pThis->thrdID);
			break;
		} else if(ret != 0) {
			char errStr[1024];
			int err = errno;
			rs_strerror_r(err, errStr, sizeof(errStr));
			DBGPRINTF("input thread term: cond_wait returned with error %d: %s\n",
				  err, errStr);
		}
		was_active = pThis->bIsActive;
	}
	d_pthread_mutex_unlock(&pThis->mutThrd);

	if(was_active) {
		DBGPRINTF("non-cancel input thread termination FAILED for thread %s 0x%x\n",
			  pThis->name, (unsigned) pThis->thrdID);
	} else {
		DBGPRINTF("non-cancel input thread termination succeeded for thread %s 0x%x\n",
			  pThis->name, (unsigned) pThis->thrdID);
	}

	RETiRet;
}

Example #3

File: wti.c Project: Joungkyun/rsyslog

/* wait for queue to become non-empty or timeout
 * helper to wtiWorker. Note the the predicate is
 * re-tested by the caller, so it is OK to NOT do it here.
 * rgerhards, 2009-05-20
 */
static void
doIdleProcessing(wti_t *pThis, wtp_t *pWtp, int *pbInactivityTOOccured)
{
	struct timespec t;

	BEGINfunc
	DBGPRINTF("%s: worker IDLE, waiting for work.\n", wtiGetDbgHdr(pThis));

	if(pThis->bAlwaysRunning) {
		/* never shut down any started worker */
		d_pthread_cond_wait(&pThis->pcondBusy, pWtp->pmutUsr);
	} else {
		timeoutComp(&t, pWtp->toWrkShutdown);/* get absolute timeout */
		if(d_pthread_cond_timedwait(&pThis->pcondBusy, pWtp->pmutUsr, &t) != 0) {
			DBGPRINTF("%s: inactivity timeout, worker terminating...\n", wtiGetDbgHdr(pThis));
			*pbInactivityTOOccured = 1; /* indicate we had a timeout */
		}
	}
	DBGOPRINT((obj_t*) pThis, "worker awoke from idle processing\n");
	ENDfunc
}