content: Fix lost context handling when using native GpuMemoryBuffers.

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 <vector>
+
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "content/common/content_export.h"
+#include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
 
 namespace content {
-class GpuMemoryBufferFactoryHost;
-class GpuMemoryBufferImpl;
 
 class CONTENT_EXPORT BrowserGpuMemoryBufferManager
     : public gpu::GpuMemoryBufferManager,
       public base::trace_event::MemoryDumpProvider {
  public:
   typedef base::Callback<void(const gfx::GpuMemoryBufferHandle& handle)>
       AllocationCallback;
 
-  BrowserGpuMemoryBufferManager(
-      GpuMemoryBufferFactoryHost* gpu_memory_buffer_factory_host,
-      int gpu_client_id);
+  explicit BrowserGpuMemoryBufferManager(int gpu_client_id);
   ~BrowserGpuMemoryBufferManager() override;
 
   static BrowserGpuMemoryBufferManager* current();
 
+  static uint32 GetImageTextureTarget(gfx::GpuMemoryBuffer::Format format,
+                                      gfx::GpuMemoryBuffer::Usage usage);
+
   // Overridden from gpu::GpuMemoryBufferManager:
   scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       gfx::GpuMemoryBuffer::Usage usage) override;
   gfx::GpuMemoryBuffer* GpuMemoryBufferFromClientBuffer(
       ClientBuffer buffer) override;
   void SetDestructionSyncPoint(gfx::GpuMemoryBuffer* buffer,
                                uint32 sync_point) override;
 
@@ skipping 16 matching lines @@
   void ChildProcessDeletedGpuMemoryBuffer(
       gfx::GpuMemoryBufferId id,
       base::ProcessHandle child_process_handle,
       int child_client_id,
       uint32 sync_point);
   void ProcessRemoved(base::ProcessHandle process_handle, int client_id);
 
  private:
   struct BufferInfo {
     BufferInfo()
-        : format(gfx::GpuMemoryBuffer::RGBA_8888), type(gfx::EMPTY_BUFFER) {}
+        : type(gfx::EMPTY_BUFFER),
+          format(gfx::GpuMemoryBuffer::RGBA_8888),
+          usage(gfx::GpuMemoryBuffer::MAP),
+          gpu_host_id(0) {}
     BufferInfo(const gfx::Size& size,
+               gfx::GpuMemoryBufferType type,
                gfx::GpuMemoryBuffer::Format format,
-               gfx::GpuMemoryBufferType type)
-        : size(size), format(format), type(type) {}
+               gfx::GpuMemoryBuffer::Usage usage,
+               int gpu_host_id)
+        : size(size),
+          type(type),
+          format(format),
+          usage(usage),
+          gpu_host_id(gpu_host_id) {}
 
     gfx::Size size;
+    gfx::GpuMemoryBufferType type;
     gfx::GpuMemoryBuffer::Format format;
-    gfx::GpuMemoryBufferType type;
+    gfx::GpuMemoryBuffer::Usage usage;
+    int gpu_host_id;
   };
   struct AllocateGpuMemoryBufferRequest;
 
-  scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBufferCommon(
+  scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBufferForSurface(
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
       gfx::GpuMemoryBuffer::Usage usage,
       int32 surface_id);
-  void AllocateGpuMemoryBufferOnIO(AllocateGpuMemoryBufferRequest* request);
-  void GpuMemoryBufferAllocatedOnIO(AllocateGpuMemoryBufferRequest* request,
+  bool IsGpuMemoryBufferConfigurationSupported(
+      gfx::GpuMemoryBuffer::Format format,
+      gfx::GpuMemoryBuffer::Usage usage) const;
+  void AllocateGpuMemoryBufferForSurfaceOnIO(
+      AllocateGpuMemoryBufferRequest* request);
+  void GpuMemoryBufferAllocatedForSurfaceOnIO(
+      AllocateGpuMemoryBufferRequest* request,
+      const gfx::GpuMemoryBufferHandle& handle);
+  void AllocateGpuMemoryBufferOnIO(gfx::GpuMemoryBufferId id,
+                                   const gfx::Size& size,
+                                   gfx::GpuMemoryBuffer::Format format,
+                                   gfx::GpuMemoryBuffer::Usage usage,
+                                   int client_id,
+                                   int surface_id,
+                                   bool reused_gpu_process,
+                                   const AllocationCallback& callback);
+  void GpuMemoryBufferAllocatedOnIO(gfx::GpuMemoryBufferId id,
+                                    int client_id,
+                                    int surface_id,
+                                    int gpu_host_id,
+                                    bool reused_gpu_process,
+                                    const AllocationCallback& callback,
                                     const gfx::GpuMemoryBufferHandle& handle);
-  void GpuMemoryBufferDeleted(gfx::GpuMemoryBufferId id,
-                              int client_id,
-                              uint32 sync_point);
-  void GpuMemoryBufferAllocatedForChildProcess(
-      gfx::GpuMemoryBufferId id,
-      int child_client_id,
-      const AllocationCallback& callback,
-      const gfx::GpuMemoryBufferHandle& handle);
+  void DestroyGpuMemoryBufferOnIO(gfx::GpuMemoryBufferId id,
+                                  int client_id,
+                                  uint32 sync_point);
 
-  GpuMemoryBufferFactoryHost* gpu_memory_buffer_factory_host_;
-  int gpu_client_id_;
+  const gfx::GpuMemoryBufferType factory_type_;
+  const std::vector<GpuMemoryBufferFactory::Configuration>
+      supported_configurations_;
+  const int gpu_client_id_;
 
-  typedef base::hash_map<gfx::GpuMemoryBufferId, BufferInfo> BufferMap;
-  typedef base::hash_map<int, BufferMap> ClientMap;
+  // The GPU process host ID. This should only be accessed on the IO thread.
+  int gpu_host_id_;
+
+  // Stores info about buffers for all clients. This should only be accessed
+  // on the IO thread.
+  using BufferMap = base::hash_map<gfx::GpuMemoryBufferId, BufferInfo>;
+  using ClientMap = base::hash_map<int, BufferMap>;
   ClientMap clients_;
 
+  // This should only be accessed on the IO thread.
   base::WeakPtrFactory<BrowserGpuMemoryBufferManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuMemoryBufferManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_