Plumbing input event latency reporting through Mus GPU.

gpu/ipc/in_process_command_buffer.h

 // Copyright 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 GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_
 #define GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 63 matching lines @@
 
 // This class provides a thread-safe interface to the global GPU service (for
 // example GPU thread) when being run in single process mode.
 // However, the behavior for accessing one context (i.e. one instance of this
 // class) from different client threads is undefined.
 class GPU_EXPORT InProcessCommandBuffer : public CommandBuffer,
                                           public GpuControl,
                                           public ImageTransportSurfaceDelegate {
  public:
   class Service;
+  typedef base::Callback<void(const std::vector<ui::LatencyInfo>&)>
+      LatencyInfoCallback;
+
   explicit InProcessCommandBuffer(const scoped_refptr<Service>& service);
   ~InProcessCommandBuffer() override;
 
   // If |surface| is not null, use it directly; in this case, the command
   // buffer gpu thread must be the same as the client thread. Otherwise create
   // a new GLSurface.
   bool Initialize(scoped_refptr<gl::GLSurface> surface,
                   bool is_offscreen,
                   SurfaceHandle window,
                   const gles2::ContextCreationAttribHelper& attribs,
@@ skipping 30 matching lines @@
   int32_t GetExtraCommandBufferData() const override;
   uint64_t GenerateFenceSyncRelease() override;
   bool IsFenceSyncRelease(uint64_t release) override;
   bool IsFenceSyncFlushed(uint64_t release) override;
   bool IsFenceSyncFlushReceived(uint64_t release) override;
   bool IsFenceSyncReleased(uint64_t release) override;
   void SignalSyncToken(const SyncToken& sync_token,
                        const base::Closure& callback) override;
   void WaitSyncTokenHint(const SyncToken& sync_token) override;
   bool CanWaitUnverifiedSyncToken(const SyncToken& sync_token) override;
+  void AddLatencyInfo(
+      const std::vector<ui::LatencyInfo>& latency_info) override;
 
 // ImageTransportSurfaceDelegate implementation:
 #if defined(OS_WIN)
   void DidCreateAcceleratedSurfaceChildWindow(
       SurfaceHandle parent_window,
       SurfaceHandle child_window) override;
 #endif
   void DidSwapBuffersComplete(SwapBuffersCompleteParams params) override;
   const gles2::FeatureInfo* GetFeatureInfo() const override;
   void SetLatencyInfoCallback(const LatencyInfoCallback& callback) override;
@@ skipping 81 matching lines @@
           window(window),
           attribs(attribs),
           capabilities(capabilities),
           context_group(share_group),
           image_factory(image_factory) {}
   };
 
   bool InitializeOnGpuThread(const InitializeOnGpuThreadParams& params);
   void Destroy();
   bool DestroyOnGpuThread();
-  void FlushOnGpuThread(int32_t put_offset);
+  void FlushOnGpuThread(int32_t put_offset,
+                        std::vector<ui::LatencyInfo>* latency_info);
   void UpdateLastStateOnGpuThread();
   void ScheduleDelayedWorkOnGpuThread();
   bool MakeCurrent();
   base::Closure WrapCallback(const base::Closure& callback);
   void QueueTask(bool out_of_order, const base::Closure& task);
   void ProcessTasksOnGpuThread();
   void CheckSequencedThread();
   void FenceSyncReleaseOnGpuThread(uint64_t release);
   bool WaitSyncTokenOnGpuThread(const SyncToken& sync_token);
   void OnWaitSyncTokenCompleted(const SyncToken& sync_token);
@@ skipping 32 matching lines @@
   std::unique_ptr<gles2::GLES2Decoder> decoder_;
   scoped_refptr<gl::GLContext> context_;
   scoped_refptr<gl::GLSurface> surface_;
   scoped_refptr<SyncPointOrderData> sync_point_order_data_;
   scoped_refptr<SyncPointClientState> sync_point_client_state_;
   base::Closure context_lost_callback_;
   // Used to throttle PerformDelayedWorkOnGpuThread.
   bool delayed_work_pending_;
   ImageFactory* image_factory_;
 
+  LatencyInfoCallback latency_info_callback_;
+
+  // Should only be accessed on the client thread.
+  std::unique_ptr<std::vector<ui::LatencyInfo>> latency_info_;
+
   // Members accessed on the client thread:
   GpuControlClient* gpu_control_client_;
 #if DCHECK_IS_ON()
   bool context_lost_;
 #endif
   State last_state_;
   base::Lock last_state_lock_;
   int32_t last_put_offset_;
   gpu::Capabilities capabilities_;
   GpuMemoryBufferManager* gpu_memory_buffer_manager_;
@@ skipping 33 matching lines @@
   base::WeakPtr<InProcessCommandBuffer> gpu_thread_weak_ptr_;
   base::WeakPtrFactory<InProcessCommandBuffer> client_thread_weak_ptr_factory_;
   base::WeakPtrFactory<InProcessCommandBuffer> gpu_thread_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessCommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_