gpu: Add GpuFence framework.

content/browser/gpu/browser_gpu_memory_buffer_manager.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 CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_
 #define CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 33 matching lines @@
 namespace content {
 class GpuProcessHost;
 
 class CONTENT_EXPORT BrowserGpuMemoryBufferManager
     : public gpu::GpuMemoryBufferManager,
       public base::trace_event::MemoryDumpProvider {
  public:
   using CreateCallback =
       base::Callback<void(const gfx::GpuMemoryBufferHandle& handle)>;
   using AllocationCallback = CreateCallback;
+  using FenceCreationCallback =
+      base::Callback<void(const gfx::GpuFenceHandle& handle)>;
 
   BrowserGpuMemoryBufferManager(int gpu_client_id,
                                 uint64_t gpu_client_tracing_id);
   ~BrowserGpuMemoryBufferManager() override;
 
   static BrowserGpuMemoryBufferManager* current();
 
   static bool IsNativeGpuMemoryBuffersEnabled();
 
   static uint32_t GetImageTextureTarget(gfx::BufferFormat format,
                                         gfx::BufferUsage usage);
 
   // Overridden from gpu::GpuMemoryBufferManager:
   std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       gpu::SurfaceHandle surface_handle) override;
   std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBufferFromHandle(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::BufferFormat format) override;
   void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
                                const gpu::SyncToken& sync_token) override;
+  std::unique_ptr<gfx::GpuFence> CreateGpuFence() override;
+  std::unique_ptr<gfx::GpuFence> CreateGpuFenceFromHandle(
+      const gfx::GpuFenceHandle& handle) override;
+  gfx::GpuFence* GpuFenceFromClientFence(ClientFence fence) override;
 
   // Overridden from base::trace_event::MemoryDumpProvider:
   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                     base::trace_event::ProcessMemoryDump* pmd) override;
 
   void AllocateGpuMemoryBufferForChildProcess(
       gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       base::ProcessHandle child_process_handle,
       int child_client_id,
       const AllocationCallback& callback);
   void ChildProcessDeletedGpuMemoryBuffer(
       gfx::GpuMemoryBufferId id,
       base::ProcessHandle child_process_handle,
       int child_client_id,
       const gpu::SyncToken& sync_token);
+  void CreateGpuFenceForChildProcess(base::ProcessHandle child_process_handle,
+                                     const FenceCreationCallback& callback);
   void ProcessRemoved(base::ProcessHandle process_handle, int client_id);
 
   bool IsNativeGpuMemoryBufferConfiguration(gfx::BufferFormat format,
                                             gfx::BufferUsage usage) const;
 
  private:
   struct BufferInfo {
     BufferInfo();
     BufferInfo(const gfx::Size& size,
                gfx::GpuMemoryBufferType type,
@@ skipping 69 matching lines @@
   using BufferMap = base::hash_map<gfx::GpuMemoryBufferId, BufferInfo>;
   using ClientMap = base::hash_map<int, BufferMap>;
   ClientMap clients_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuMemoryBufferManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_