[Webkit-unassigned] [Bug 169943] When the browser window is activated or deactivated, images can flash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=169943

Simon Fraser (smfr) <simon.fraser at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |akling at apple.com

--- Comment #1 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
So the memory cache prunes on a timer, and destroys decoded image data via:

  * frame #0: 0x0000000117c78a9c WebCore`WebCore::BitmapImage::destroyDecodedData(this=0x0000000123a345c0, destroyAll=true) at BitmapImage.cpp:68
    frame #1: 0x0000000117cbade3 WebCore`WebCore::CachedImage::destroyDecodedData(this=0x00000001297bf200) at CachedImage.cpp:489
    frame #2: 0x0000000119987629 WebCore`WebCore::MemoryCache::pruneLiveResourcesToSize(this=0x000000011b9ff1d0, targetSize=95630128, shouldDestroyDecodedDataForAllLiveResources=false) at MemoryCache.cpp:338
    frame #3: 0x0000000119987486 WebCore`WebCore::MemoryCache::pruneLiveResources(this=0x000000011b9ff1d0, shouldDestroyDecodedDataForAllLiveResources=false) at MemoryCache.cpp:265
    frame #4: 0x000000011998526a WebCore`WebCore::MemoryCache::prune(this=0x000000011b9ff1d0) at MemoryCache.cpp:731
...
    frame #10: 0x000000011998cff9 WebCore`std::__1::__function::__func<std::__1::__bind<void (WebCore::MemoryCache::*&)(), WebCore::MemoryCache*>, std::__1::allocator<std::__1::__bind<void (WebCore::MemoryCache::*&)(), WebCore::MemoryCache*> >, void ()>::operator(this=0x000000011b9ff3a0)() at functional:1437
    frame #11: 0x0000000117ab6b0a WebCore`std::__1::function<void ()>::operator(this=0x000000011b9ff3a0)() const at functional:1817
    frame #12: 0x0000000117ab6a29 WebCore`WebCore::Timer::fired(this=0x000000011b9ff360) at Timer.h:148

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