Improvements/additions to SkImageCache/SkLazyPixelRef.
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
diff --git a/include/lazy/SkPurgeableImageCache.h b/include/lazy/SkPurgeableImageCache.h
new file mode 100644
index 0000000..0516ff1
--- /dev/null
+++ b/include/lazy/SkPurgeableImageCache.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkPurgeableImageCache_DEFINED
+#define SkPurgeableImageCache_DEFINED
+
+#include "SkImageCache.h"
+
+#ifdef SK_DEBUG
+ #include "SkTDArray.h"
+#endif
+
+/**
+ * Implementation for SkImageCache that uses system defined purgeable memory.
+ */
+class SkPurgeableImageCache : public SkImageCache {
+
+public:
+ static SkImageCache* Create();
+
+ virtual void* allocAndPinCache(size_t bytes, intptr_t* ID) SK_OVERRIDE;
+ virtual void* pinCache(intptr_t ID, SkImageCache::DataStatus*) SK_OVERRIDE;
+ virtual void releaseCache(intptr_t ID) SK_OVERRIDE;
+ virtual void throwAwayCache(intptr_t ID) SK_OVERRIDE;
+
+#ifdef SK_DEBUG
+ virtual MemoryStatus getMemoryStatus(intptr_t ID) const SK_OVERRIDE;
+ virtual void purgeAllUnpinnedCaches() SK_OVERRIDE;
+ virtual ~SkPurgeableImageCache();
+#endif
+
+private:
+ SkPurgeableImageCache();
+
+#ifdef SK_DEBUG
+ SkTDArray<intptr_t> fRecs;
+ int findRec(intptr_t) const;
+#endif
+ void removeRec(intptr_t);
+};
+#endif // SkPurgeableImageCache_DEFINED