Index: skia/ext/sk_discardable_memory_chrome.h |
diff --git a/skia/ext/sk_discardable_memory_chrome.h b/skia/ext/sk_discardable_memory_chrome.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..c213cf6666366a71209cea7c9b694a06373e7160 |
--- /dev/null |
+++ b/skia/ext/sk_discardable_memory_chrome.h |
@@ -0,0 +1,53 @@ |
+// Copyright (c) 2013 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef SKIA_EXT_SK_DISCARDABLE_MEMORY_CHROME_H_ |
+#define SKIA_EXT_SK_DISCARDABLE_MEMORY_CHROME_H_ |
+ |
+#include "base/memory/discardable_memory.h" |
+#include "base/memory/singleton.h" |
+#include "third_party/skia/src/core/SkDiscardableMemory.h" |
+ |
+namespace skia { |
+ |
+// This class implements the SkDiscardableMemory interface using |
+// base::DiscardableMemory. |
+class SK_API SkDiscardableMemoryChrome : public SkDiscardableMemory { |
nduca
2013/08/14 22:53:37
Also impl is a useful suffix when you're implement
ernstm
2013/08/15 20:30:12
Following the embedding pattern of SkThread, I kep
|
+public: |
+ SkDiscardableMemoryChrome(); |
scroggo
2013/08/15 14:15:25
It looks like someone could create an SkDiscardabl
ernstm
2013/08/15 20:30:12
I think it's safe to create and initialize SkDisca
|
+ |
+ // Initialize the SkDiscardableMemoryChrome object and lock the memory. |
+ // Returns true on success. No memory is allocated if this call returns |
+ // false. This call should only be called once. |
+ bool InitializeAndLock(size_t bytes); |
+ |
+ // Implementation of SkDiscardableMemory interface. |
+ bool lock(); |
+ void* data(); |
+ void unlock(); |
+ |
+private: |
+ scoped_ptr<base::DiscardableMemory> discardable_; |
+}; |
+ |
+// This singleton class implements the SkDiscardableMemoryFactory interface |
+// for creation of SkDiscardableMemoryChrome objects. |
+class SK_API SkDiscardableMemoryFactoryChrome |
+ : public SkDiscardableMemoryFactory { |
+public: |
+ static SkDiscardableMemoryFactoryChrome* GetInstance() { |
+ return Singleton<SkDiscardableMemoryFactoryChrome>::get(); |
+ } |
+ |
+ // Implementation of SkDiscardableMemoryFactory interface. |
+ SkDiscardableMemory* create(size_t bytes); |
+ |
+private: |
+ SkDiscardableMemoryFactoryChrome() {} |
+ friend struct DefaultSingletonTraits<SkDiscardableMemoryFactoryChrome>; |
+}; |
+ |
+} // namespace skia |
+ |
+#endif // SKIA_EXT_SK_DISCARDABLE_MEMORY_CHROME_H_ |