int32_t
nsSocketTransportService::Poll(uint32_t *interval,
TimeDuration *pollDuration)
{
PRPollDesc *pollList;
uint32_t pollCount;
PRIntervalTime pollTimeout;
*pollDuration = 0;
// If there are pending events for this thread then
// DoPollIteration() should service the network without blocking.
bool pendingEvents = false;
mRawThread->HasPendingEvents(&pendingEvents);
if (mPollList[0].fd) {
mPollList[0].out_flags = 0;
pollList = mPollList;
pollCount = mActiveCount + 1;
pollTimeout = pendingEvents ? PR_INTERVAL_NO_WAIT : PollTimeout();
}
else {
// no pollable event, so busy wait...
pollCount = mActiveCount;
if (pollCount)
pollList = &mPollList[1];
else
pollList = nullptr;
pollTimeout =
pendingEvents ? PR_INTERVAL_NO_WAIT : PR_MillisecondsToInterval(25);
}
PRIntervalTime ts = PR_IntervalNow();
TimeStamp pollStart;
if (mTelemetryEnabledPref) {
pollStart = TimeStamp::NowLoRes();
}
SOCKET_LOG((" timeout = %i milliseconds\n",
PR_IntervalToMilliseconds(pollTimeout)));
int32_t rv = PR_Poll(pollList, pollCount, pollTimeout);
PRIntervalTime passedInterval = PR_IntervalNow() - ts;
if (mTelemetryEnabledPref && !pollStart.IsNull()) {
*pollDuration = TimeStamp::NowLoRes() - pollStart;
}
SOCKET_LOG((" ...returned after %i milliseconds\n",
PR_IntervalToMilliseconds(passedInterval)));
*interval = PR_IntervalToSeconds(passedInterval);
return rv;
}
PRInt32
nsSocketTransportService::Poll(PRBool wait, PRUint32 *interval)
{
PRPollDesc *pollList;
PRUint32 pollCount;
PRIntervalTime pollTimeout;
if (mPollList[0].fd) {
mPollList[0].out_flags = 0;
pollList = mPollList;
pollCount = mActiveCount + 1;
pollTimeout = PollTimeout();
}
else {
// no pollable event, so busy wait...
pollCount = mActiveCount;
if (pollCount)
pollList = &mPollList[1];
else
pollList = nsnull;
pollTimeout = PR_MillisecondsToInterval(25);
}
if (!wait)
pollTimeout = PR_INTERVAL_NO_WAIT;
PRIntervalTime ts = PR_IntervalNow();
LOG((" timeout = %i milliseconds\n",
PR_IntervalToMilliseconds(pollTimeout)));
PRInt32 rv = PR_Poll(pollList, pollCount, pollTimeout);
PRIntervalTime passedInterval = PR_IntervalNow() - ts;
LOG((" ...returned after %i milliseconds\n",
PR_IntervalToMilliseconds(passedInterval)));
*interval = PR_IntervalToSeconds(passedInterval);
return rv;
}