Ejemplos de rf_AllocCallbackDesc en C++ (Cpp)

Ejemplo n.º 1

int
rf_State_Quiesce(RF_RaidAccessDesc_t *desc)
{
	RF_AccTraceEntry_t *tracerec = &desc->tracerec;
	RF_Etimer_t timer;
	int suspended = RF_FALSE;
	RF_Raid_t *raidPtr;

	raidPtr = desc->raidPtr;

	RF_ETIMER_START(timer);
	RF_ETIMER_START(desc->timer);

	RF_LOCK_MUTEX(raidPtr->access_suspend_mutex);
	if (raidPtr->accesses_suspended) {
		RF_CallbackDesc_t *cb;
		cb = rf_AllocCallbackDesc();
		/*
		 * XXX The following cast is quite bogus...
		 * rf_ContinueRaidAccess takes a (RF_RaidAccessDesc_t *)
		 * as an argument... GO
		 */
		cb->callbackFunc = (void (*) (RF_CBParam_t))
		    rf_ContinueRaidAccess;
		cb->callbackArg.p = (void *) desc;
		cb->next = raidPtr->quiesce_wait_list;
		raidPtr->quiesce_wait_list = cb;
		suspended = RF_TRUE;
	}
	RF_UNLOCK_MUTEX(raidPtr->access_suspend_mutex);

	RF_ETIMER_STOP(timer);
	RF_ETIMER_EVAL(timer);
	tracerec->specific.user.suspend_ovhd_us += RF_ETIMER_VAL_US(timer);

	if (suspended && rf_quiesceDebug)
		printf("Stalling access due to quiescence lock.\n");

	desc->state++;
	return suspended;
}

Ejemplo n.º 2

Archivo: rf_states.c Proyecto: eyberg/rumpkernel-netbsd-src

int
rf_State_Quiesce(RF_RaidAccessDesc_t *desc)
{
#if RF_ACC_TRACE > 0
	RF_AccTraceEntry_t *tracerec = &desc->tracerec;
	RF_Etimer_t timer;
#endif
	RF_CallbackDesc_t *cb;
	RF_Raid_t *raidPtr;
	int     suspended = RF_FALSE;
	int need_cb, used_cb;

	raidPtr = desc->raidPtr;

#if RF_ACC_TRACE > 0
	RF_ETIMER_START(timer);
	RF_ETIMER_START(desc->timer);
#endif

	need_cb = 0;
	used_cb = 0;
	cb = NULL;

	rf_lock_mutex2(raidPtr->access_suspend_mutex);
	/* Do an initial check to see if we might need a callback structure */
	if (raidPtr->accesses_suspended) {
		need_cb = 1;
	}
	rf_unlock_mutex2(raidPtr->access_suspend_mutex);

	if (need_cb) {
		/* create a callback if we might need it...
		   and we likely do. */
		cb = rf_AllocCallbackDesc();
	}

	rf_lock_mutex2(raidPtr->access_suspend_mutex);
	if (raidPtr->accesses_suspended) {
		cb->callbackFunc = (void (*) (RF_CBParam_t)) rf_ContinueRaidAccess;
		cb->callbackArg.p = (void *) desc;
		cb->next = raidPtr->quiesce_wait_list;
		raidPtr->quiesce_wait_list = cb;
		suspended = RF_TRUE;
		used_cb = 1;
	}
	rf_unlock_mutex2(raidPtr->access_suspend_mutex);

	if ((need_cb == 1) && (used_cb == 0)) {
		rf_FreeCallbackDesc(cb);
	}

#if RF_ACC_TRACE > 0
	RF_ETIMER_STOP(timer);
	RF_ETIMER_EVAL(timer);
	tracerec->specific.user.suspend_ovhd_us += RF_ETIMER_VAL_US(timer);
#endif

#if RF_DEBUG_QUIESCE
	if (suspended && rf_quiesceDebug)
		printf("Stalling access due to quiescence lock\n");
#endif
	desc->state++;
	return suspended;
}