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Commit 34a56502 authored by Treehugger Robot's avatar Treehugger Robot Committed by Automerger Merge Worker
Browse files

Merge "Collect Parcel statistics using std::atomics." am: fa05b521 

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1479937

Change-Id: I973bad68a3f64a0a10588c1e15f786c97333f998
parents 16353980 fa05b521

libs/binder/Parcel.cpp

+12 −31
Original line number Diff line number Diff line
@@ -77,9 +77,8 @@ namespace android { 
// many things compile this into prebuilts on the stack

static_assert(sizeof(Parcel) == 60 || sizeof(Parcel) == 120);



static pthread_mutex_t gParcelGlobalAllocSizeLock = PTHREAD_MUTEX_INITIALIZER;

static size_t gParcelGlobalAllocSize = 0;

static size_t gParcelGlobalAllocCount = 0;

static std::atomic<size_t> gParcelGlobalAllocCount;

static std::atomic<size_t> gParcelGlobalAllocSize;



static size_t gMaxFds = 0;
@@ -275,17 +274,11 @@ Parcel::~Parcel() 
}



size_t Parcel::getGlobalAllocSize() {

    pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

    size_t size = gParcelGlobalAllocSize;

    pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);

    return size;

    return gParcelGlobalAllocSize.load();

}



size_t Parcel::getGlobalAllocCount() {

    pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

    size_t count = gParcelGlobalAllocCount;

    pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);

    return count;

    return gParcelGlobalAllocCount.load();

}



const uint8_t* Parcel::data() const
@@ -2630,16 +2623,8 @@ void Parcel::freeDataNoInit() 
        releaseObjects();

        if (mData) {

            LOG_ALLOC("Parcel %p: freeing with %zu capacity", this, mDataCapacity);

            pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

            if (mDataCapacity <= gParcelGlobalAllocSize) {

              gParcelGlobalAllocSize = gParcelGlobalAllocSize - mDataCapacity;

            } else {

              gParcelGlobalAllocSize = 0;

            }

            if (gParcelGlobalAllocCount > 0) {

            gParcelGlobalAllocSize -= mDataCapacity;

            gParcelGlobalAllocCount--;

            }

            pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);

            free(mData);

        }

        if (mObjects) free(mObjects);
@@ -2685,13 +2670,15 @@ status_t Parcel::restartWrite(size_t desired) 


    if (data) {

        LOG_ALLOC("Parcel %p: restart from %zu to %zu capacity", this, mDataCapacity, desired);

        pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

        gParcelGlobalAllocSize += desired;

        gParcelGlobalAllocSize -= mDataCapacity;

        if (mDataCapacity > desired) {

            gParcelGlobalAllocSize -= (mDataCapacity - desired);

        } else {

            gParcelGlobalAllocSize += (desired - mDataCapacity);

        }



        if (!mData) {

            gParcelGlobalAllocCount++;

        }

        pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);

        mData = data;

        mDataCapacity = desired;

    }
@@ -2779,10 +2766,8 @@ status_t Parcel::continueWrite(size_t desired) 
        mOwner = nullptr;



        LOG_ALLOC("Parcel %p: taking ownership of %zu capacity", this, desired);

        pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

        gParcelGlobalAllocSize += desired;

        gParcelGlobalAllocCount++;

        pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);



        mData = data;

        mObjects = objects;
@@ -2830,10 +2815,8 @@ status_t Parcel::continueWrite(size_t desired) 
            if (data) {

                LOG_ALLOC("Parcel %p: continue from %zu to %zu capacity", this, mDataCapacity,

                        desired);

                pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

                gParcelGlobalAllocSize += desired;

                gParcelGlobalAllocSize -= mDataCapacity;

                pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);

                mData = data;

                mDataCapacity = desired;

            } else {
@@ -2865,10 +2848,8 @@ status_t Parcel::continueWrite(size_t desired) 
        }



        LOG_ALLOC("Parcel %p: allocating with %zu capacity", this, desired);

        pthread_mutex_lock(&gParcelGlobalAllocSizeLock);

        gParcelGlobalAllocSize += desired;

        gParcelGlobalAllocCount++;

        pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);



        mData = data;

        mDataSize = mDataPos = 0;