bb281f7f96
SkPurgeableImageCache: New image cache that uses virtual memory to store the pixels. Combines features of SkAshmemImageCache (which has been removed) with SkPurgeableMemoryBlock, which has android and Mac versions. SkImageCache: Modified the API. pinCache now returns a status out parameter which states whether the pinned memory retained the old data. This allows allocAndPinCache to only be used for allocations. Add a new debug only interface to purge unpinned data. Updates to documentation, clarifying behavior. Changed CachedStatus to MemoryStatus SkLruImageCache: Implement the new function purgeAllUnpinnedCaches and change implementation of pinCache for the new behavior. SkLazyPixelRef: Rewrite onLockPixels to account for the new behavior of pinCache. BitmapFactoryTest: Test the new SkPurgeableImageCache. Write tests which directly test the SkImageCaches. Create a larger bitmap, since some of the SkImageCaches are designed to handle large bitmaps. bench_ and render_pictures: Consolidate lazy_decode_bitmap into one function. Allow using a flag to specify using the purgeable image cache. Clean up some #includes. Review URL: https://codereview.chromium.org/12433020 git-svn-id: http://skia.googlecode.com/svn/trunk@8207 2bbb7eff-a529-9590-31e7-b0007b416f81
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkPurgeableImageCache_DEFINED
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#define SkPurgeableImageCache_DEFINED
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#include "SkImageCache.h"
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#ifdef SK_DEBUG
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#include "SkTDArray.h"
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#endif
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/**
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* Implementation for SkImageCache that uses system defined purgeable memory.
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*/
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class SkPurgeableImageCache : public SkImageCache {
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public:
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static SkImageCache* Create();
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virtual void* allocAndPinCache(size_t bytes, intptr_t* ID) SK_OVERRIDE;
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virtual void* pinCache(intptr_t ID, SkImageCache::DataStatus*) SK_OVERRIDE;
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virtual void releaseCache(intptr_t ID) SK_OVERRIDE;
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virtual void throwAwayCache(intptr_t ID) SK_OVERRIDE;
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#ifdef SK_DEBUG
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virtual MemoryStatus getMemoryStatus(intptr_t ID) const SK_OVERRIDE;
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virtual void purgeAllUnpinnedCaches() SK_OVERRIDE;
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virtual ~SkPurgeableImageCache();
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#endif
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private:
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SkPurgeableImageCache();
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#ifdef SK_DEBUG
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SkTDArray<intptr_t> fRecs;
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int findRec(intptr_t) const;
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#endif
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void removeRec(intptr_t);
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};
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#endif // SkPurgeableImageCache_DEFINED
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