Global GPU memory manager for android webview

android_webview/browser/shared_renderer_state.h

 // Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
 #define ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
 
 #include <queue>
 
 #include "base/callback.h"
@@ skipping 37 matching lines @@
                       BrowserViewRendererClient* client);
   ~SharedRendererState();
 
   void ClientRequestDrawGL();
 
   // This function should only be called on UI thread.
   void SetCompositorOnUiThread(content::SynchronousCompositor* compositor);
 
   // This function can be called on both UI and RT thread.
   content::SynchronousCompositor* GetCompositor();
+
+  void SetMemoryPolicy(const content::SynchronousCompositorMemoryPolicy policy);
+  content::SynchronousCompositorMemoryPolicy GetMemoryPolicy() const;
+
+  void SetMemoryPolicyDirty(bool is_dirty);
+  bool IsMemoryPolicyDirty() const;
   void SetDrawGLInput(const DrawGLInput& input);
   DrawGLInput GetDrawGLInput() const;
 
   void ClearClosureQueue();
   void AppendClosure(const base::Closure& closure);
   // Will return empty closure if queue empty.
   base::Closure PopFrontClosure();
 
   void SetHardwareInitialized(bool initialized);
   bool IsHardwareInitialized() const;
 
  private:
   void ClientRequestDrawGLOnUIThread();
 
   scoped_refptr<base::MessageLoopProxy> ui_loop_;
   // TODO(boliu): Remove |client_on_ui_| from shared state.
   BrowserViewRendererClient* client_on_ui_;
   base::WeakPtrFactory<SharedRendererState> weak_factory_on_ui_thread_;
   base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
 
   // Accessed by both UI and RT thread.
   mutable base::Lock lock_;
   content::SynchronousCompositor* compositor_;
+  content::SynchronousCompositorMemoryPolicy memory_policy_;
+  // Set to true when SetMemoryPolicy called with a different memory policy.
+  // Set to false when memory policy is read and enforced to compositor.
+  bool memory_policy_dirty_;
   DrawGLInput draw_gl_input_;
   std::queue<base::Closure> closure_queue_;
   bool hardware_initialized_;
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_