• commit-queue@webkit.org's avatar
    2010-11-04 Pratik Solanki <psolanki@apple.com> · 5408f321
    commit-queue@webkit.org authored
            Reviewed by Darin Adler.
    
            Should make use of purge priorities for different resource types
            https://bugs.webkit.org/show_bug.cgi?id=48684
    
            Assign purge priorities to CachedResource objects. JavaScript and CSS stylesheets are more
            important than images so hint to the kernel to purge them last. We do this by repurposing
            the previously unused function, PurgeableBuffer::setPurgePriority(). It now just sets the
            priority field and does not have side-effects like calling makePurgeable(true).
    
            Also, remove unusued PurgeableBuffer::create(const Vector<char>&) function and move the
            purgeable memory size threshold from CachedResource to PurgeableBuffer.
    
            * WebCore.xcodeproj/project.pbxproj: Add new PurgePriority.h header and mark it as private
            header.
            * loader/CachedCSSStyleSheet.h:
            (WebCore::CachedCSSStyleSheet::purgePriority):
            * loader/CachedImage.h:
            (WebCore::CachedImage::purgePriority):
            * loader/CachedResource.cpp:
            (WebCore::CachedResource::makePurgeable): Set the purge priority on the PurgeableBffer.
            Also, move the check for purgeable size threshold to PurgeableBuffer.
            * loader/CachedResource.h:
            (WebCore::CachedResource::purgePriority): Added. New virtual method that lets the class
            specify its purge priority.
            * loader/CachedScript.h:
            (WebCore::CachedScript::purgePriority):
            * platform/PurgePriority.h: Added. Move the PurgePriority enum from PurgeableBuffer class to
            its own header file.
            (WebCore::):
            * platform/PurgeableBuffer.h:
            (WebCore::PurgeableBuffer::setPurgePriority): Update this previously unused function to just
            set the priority and not call makePurgeable(true).
            * platform/mac/PurgeableBufferMac.cpp: Update size threshold to 16KB which is what
            CachedResource was using.
    
    git-svn-id: http://svn.webkit.org/repository/webkit/trunk@71318 268f45cc-cd09-0410-ab3c-d52691b4dbfc
    5408f321
PurgeableBufferMac.cpp 4.96 KB