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Commit c60096e4 authored by Glenn Kasten's avatar Glenn Kasten Committed by Android (Google) Code Review
Browse files

Merge "Add comments explaining about SCHED_FIFO"

parents 56c76245 47d55173

media/libaudioclient/AudioTrack.cpp

+4 −0
Original line number Original line Diff line number Diff line
@@ -1414,6 +1414,9 @@ status_t AudioTrack::createTrack_l() 




    pid_t tid = -1;

    pid_t tid = -1;

    if (mFlags & AUDIO_OUTPUT_FLAG_FAST) {

    if (mFlags & AUDIO_OUTPUT_FLAG_FAST) {

        // It is currently meaningless to request SCHED_FIFO for a Java thread.  Even if the

        // application-level code follows all non-blocking design rules, the language runtime

        // doesn't also follow those rules, so the thread will not benefit overall.

        if (mAudioTrackThread != 0 && !mThreadCanCallJava) {

        if (mAudioTrackThread != 0 && !mThreadCanCallJava) {

            tid = mAudioTrackThread->getTid();

            tid = mAudioTrackThread->getTid();

        }

        }
@@ -2948,6 +2951,7 @@ bool AudioTrack::AudioTrackThread::threadLoop() 
            mPausedInt = false;

            mPausedInt = false;

        }

        }

        if (mPausedInt) {

        if (mPausedInt) {

            // TODO use futex instead of condition, for event flag "or"

            if (mPausedNs > 0) {

            if (mPausedNs > 0) {

                (void) mMyCond.waitRelative(mMyLock, mPausedNs);

                (void) mMyCond.waitRelative(mMyLock, mPausedNs);

            } else {

            } else {