tree 27e36e26a5b71b9aa7aa2f4698a9b398252353f3
parent 1111b611b66c383d585eb7aaea0b1defd8488699
author commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 1399062536 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 1399062536 +0000

Choose memset procs once.

TSAN shows us racing on the function pointers.  Might as well fix it.

WARNING: ThreadSanitizer: data race (pid=19995)
  Read of size 8 at 0x7f703affb048 by thread T12 (mutexes: write M2957):
    #0 SkBitmap::internalErase(SkIRect const&, unsigned int, unsigned int, unsigned int, unsigned int) const /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/core/SkBitmap.cpp:886 (tests+0x0000003511ca)
    #1 SkBitmap::eraseARGB(unsigned int, unsigned int, unsigned int, unsigned int) const /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/core/SkBitmap.cpp:919 (tests+0x0000003534bf)
    #2 (anonymous namespace)::DecodingImageGenerator::getPixels(SkImageInfo const&, void*, unsigned long) /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/images/SkDecodingImageGenerator.cpp:195 (tests+0x00000051bee1)
    #3 SkDiscardablePixelRef::onNewLockPixels(SkPixelRef::LockRec*) /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/lazy/SkDiscardablePixelRef.cpp:63 (tests+0x00000039ad9c)
    #4 SkPixelRef::lockPixels(SkPixelRef::LockRec*) /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/core/SkPixelRef.cpp:179 (tests+0x0000003fec23)
    #5 SkBitmap::lockPixels() const /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/core/SkBitmap.cpp:414 (tests+0x00000034e41e)
    #6 SkAutoLockPixels /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/include/core/SkBitmap.h:819 (tests+0x0000002752f3)
    #7 ImageDecoderOptions(skiatest::Reporter*) /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/tests/ImageDecodingTest.cpp:565 (tests+0x000000275d03)
    #8 skiatest::Test::run() /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/tests/Test.cpp:107 (tests+0x0000002263e7)
    #9 SkTestRunnable::run() /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/tests/skia_test.cpp:108 (tests+0x0000001d8607)
    #10 SkThreadPoolPrivate::ThreadLocal<void>::run(SkTRunnable<void>*) /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/include/utils/SkThreadPool.h:108 (tests+0x0000001d817e)
    #11 thread_start(void*) /var/scratch/Release/../../../usr/local/google/home/mtklein/skia/src/utils/SkThreadUtils_pthread.cpp:66 (tests+0x000000604347)

  Previous write of size 8 at 0x7f703affb048 by thread T26:
    [failed to restore the stack]


BUG=skia:1792
R=bungeman@google.com, mtklein@google.com, reed@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/250503003

git-svn-id: http://skia.googlecode.com/svn/trunk@14548 2bbb7eff-a529-9590-31e7-b0007b416f81