Bug 69101 – [chromium] Memory leak when updating GPU layers

• Component: Platform
• Status: RESOLVED WONTFIX

[Alexandru Chiculita]

Every time a GPU layer is updated the CG graphics context is leaked:

In http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/chromium/PlatformCanvas.h the m_contextCG  and m_colorSpace members are RetainPtr, but the initial reference is never released. RetainPtr needs adoptCF in order to adopt the reference of the objects that were just created.

        RetainPtr<CGColorSpaceRef> m_colorSpace;
        RetainPtr<CGContextRef> m_contextCG;

http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/chromium/PlatformCanvas.cpp

    m_colorSpace = CGColorSpaceCreateDeviceRGB();
    size_t rowBytes = canvas->size().width() * 4;
    m_contextCG = CGBitmapContextCreate(canvas->m_pixelData.get(),
                                        canvas->size().width(), canvas->size().height(), 8, rowBytes,
                                        m_colorSpace.get(),
                                        kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host);

[Stephen Chenney]

https://code.google.com/p/chromium/issues/detail?id=230803