Add latency measurement system

content/renderer/gpu/compositor_output_surface.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/gpu/compositor_output_surface.h"
 
 #include "base/message_loop_proxy.h"
 #include "cc/compositor_frame.h"
 #include "cc/output_surface_client.h"
+#include "content/common/gpu/client/command_buffer_proxy_impl.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/render_thread_impl.h"
 #include "ipc/ipc_forwarding_message_filter.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ipc/ipc_sync_message_filter.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 
 using cc::CompositorFrame;
 using cc::SoftwareOutputDevice;
 using WebKit::WebGraphicsContext3D;
 
 namespace content {
 
 //------------------------------------------------------------------------------
 
 // static
 IPC::ForwardingMessageFilter* CompositorOutputSurface::CreateFilter(
     base::TaskRunner* target_task_runner)
 {
   uint32 messages_to_filter[] = {ViewMsg_UpdateVSyncParameters::ID};
   return new IPC::ForwardingMessageFilter(
       messages_to_filter, arraysize(messages_to_filter),
       target_task_runner);
 }
 
 CompositorOutputSurface::CompositorOutputSurface(
     int32 routing_id,
     WebGraphicsContext3D* context3D,
+    CommandBufferProxyImpl* command_buffer_proxy,
     cc::SoftwareOutputDevice* software_device)
     : output_surface_filter_(
           RenderThreadImpl::current()->compositor_output_surface_filter()),
       client_(NULL),
       routing_id_(routing_id),
       context3D_(context3D),
-      software_device_(software_device) {
+      software_device_(software_device),
+      command_buffer_proxy_(command_buffer_proxy) {
   DCHECK(output_surface_filter_);
   capabilities_.has_parent_compositor = false;
   DetachFromThread();
 }
 
 CompositorOutputSurface::~CompositorOutputSurface() {
   DCHECK(CalledOnValidThread());
   if (!client_)
     return;
   output_surface_proxy_->ClearOutputSurface();
@@ skipping 16 matching lines @@
   }
 
   client_ = client;
 
   output_surface_proxy_ = new CompositorOutputSurfaceProxy(this);
   output_surface_filter_->AddRoute(
       routing_id_,
       base::Bind(&CompositorOutputSurfaceProxy::OnMessageReceived,
                  output_surface_proxy_));
 
+  if (command_buffer_proxy_)
+    command_buffer_proxy_->SetLatencyInfoCallback(
+        base::Bind(&CompositorOutputSurface::OnReceivedLatencyInfo,
+                   base::Unretained(this)));
+
   return true;
 }
 
 WebGraphicsContext3D* CompositorOutputSurface::Context3D() const {
   DCHECK(CalledOnValidThread());
   return context3D_.get();
 }
 
 cc::SoftwareOutputDevice* CompositorOutputSurface::SoftwareDevice() const {
   return software_device_.get();
 }
 
 void CompositorOutputSurface::SendFrameToParentCompositor(
     const cc::CompositorFrame& frame) {
   DCHECK(CalledOnValidThread());
   Send(new ViewHostMsg_SwapCompositorFrame(routing_id_, frame));
 }
 
+void CompositorOutputSurface::SetLatencyInfo(
+    const cc::LatencyInfo& latency_info) {
+  if (command_buffer_proxy_)
+    command_buffer_proxy_->SetLatencyInfo(latency_info);
+}
+
+void CompositorOutputSurface::OnReceivedLatencyInfo(
+    const cc::LatencyInfo& latency_info) {
+  DCHECK(CalledOnValidThread());
+  DCHECK(client_);
+  client_->OnReceivedLatencyInfo(latency_info);
+}
+
 void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) {
   DCHECK(CalledOnValidThread());
   if (!client_)
     return;
   IPC_BEGIN_MESSAGE_MAP(CompositorOutputSurface, message)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateVSyncParameters, OnUpdateVSyncParameters);
   IPC_END_MESSAGE_MAP()
 }
 
 void CompositorOutputSurface::OnUpdateVSyncParameters(
     base::TimeTicks timebase, base::TimeDelta interval) {
   DCHECK(CalledOnValidThread());
   DCHECK(client_);
   client_->OnVSyncParametersChanged(timebase, interval);
 }
 
 bool CompositorOutputSurface::Send(IPC::Message* message) {
   return ChildThread::current()->sync_message_filter()->Send(message);
 }
 
 }  // namespace content