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Commit 379f264b authored by John Reck's avatar John Reck
Browse files

Add stat collection start time 

Add CLOCK_MONOTONIC to signal
when the stat collection started
to allow for tracking stats
over time

Change-Id: Iab7c52f21184eea603ddc8572b9d91a951b45a00
parent 3d518037

libs/hwui/JankTracker.cpp

+6 −0
Original line number Diff line number Diff line
@@ -169,6 +169,10 @@ void JankTracker::switchStorageToAshmem(int ashmemfd) { 
    newData->jankFrameCount += mData->jankFrameCount;

    newData->totalFrameCount >>= divider;

    newData->totalFrameCount += mData->totalFrameCount;

    if (newData->statStartTime > mData->statStartTime

            || newData->statStartTime == 0) {

        newData->statStartTime = mData->statStartTime;

    }



    freeData();

    mData = newData;
@@ -235,6 +239,7 @@ void JankTracker::dumpBuffer(const void* buffer, size_t bufsize, int fd) { 
}



void JankTracker::dumpData(const ProfileData* data, int fd) {

    dprintf(fd, "\nStats since: %lluns", data->statStartTime);

    dprintf(fd, "\nTotal frames rendered: %u", data->totalFrameCount);

    dprintf(fd, "\nJanky frames: %u (%.2f%%)", data->jankFrameCount,

            (float) data->jankFrameCount / (float) data->totalFrameCount * 100.0f);
@@ -252,6 +257,7 @@ void JankTracker::reset() { 
    mData->frameCounts.fill(0);

    mData->totalFrameCount = 0;

    mData->jankFrameCount = 0;

    mData->statStartTime = systemTime(CLOCK_MONOTONIC);

}



uint32_t JankTracker::findPercentile(const ProfileData* data, int percentile) {

libs/hwui/JankTracker.h

+2 −1
Original line number Diff line number Diff line
@@ -44,10 +44,11 @@ enum JankType { 
struct ProfileData {

    std::array<uint32_t, NUM_BUCKETS> jankTypeCounts;

    // See comments on kBucket* constants for what this holds

    std::array<uint32_t, 57> frameCounts;

    std::array<uint32_t, 55> frameCounts;



    uint32_t totalFrameCount;

    uint32_t jankFrameCount;

    nsecs_t statStartTime;

};



// TODO: Replace DrawProfiler with this