Exemplo n.º 1
0
    bool wait(unsigned long time)
    {
        TInt err = KErrNone;
        if (time == ULONG_MAX) {
            // untimed wait, loop because RCondVar::Wait may return before the condition is triggered
            do {
                err = cond.Wait(mutex);
            } while (err == KErrNone && wakeups == 0);
        } else {
            unsigned long maxWait = KMaxTInt / 1000;
            QElapsedTimer waitTimer;
            do {
                waitTimer.start();
                unsigned long waitTime = qMin(maxWait, time);
                // wait at least 1ms, as 0 means no wait
                err = cond.TimedWait(mutex, qMax(1ul, waitTime) * 1000);
                // RCondVar::TimedWait may return before the condition is triggered, update the timeout with actual wait time
                time -= qMin((unsigned long)waitTimer.elapsed(), waitTime);
            } while ((err == KErrNone && wakeups == 0) || (err == KErrTimedOut && time > 0));
        }

        Q_ASSERT_X(waiters > 0, "QWaitCondition::wait", "internal error (waiters)");
        --waiters;
        if (err == KErrNone) {
            Q_ASSERT_X(wakeups > 0, "QWaitCondition::wait", "internal error (wakeups)");
            --wakeups;
        }

        mutex.Signal();

        if (err && err != KErrTimedOut)
            report_error(err, "QWaitCondition::wait()", "cv wait");
        return err == KErrNone;
    }
Exemplo n.º 2
0
bool_t ConditionWait(void* Handle,int Tick,void* Lock)
{
	RCondVar p;
	RMutex m;	
	p.SetHandle((int)Handle);
	m.SetHandle((int)Lock);
	// Increase the tick by one to mimic other platforms
	// which is -1 = Wait forever, 0 = Return
	// For Symbian, 0 = Wait forever
	Tick++;		
	return p.TimedWait(m, Tick*1000) == KErrNone;
}