Track AsyncReadback time using histogram.

content/browser/renderer_host/render_widget_host_view_android.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/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
+#include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/worker_pool.h"
 #include "cc/base/latency_info_swap_promise.h"
 #include "cc/layers/delegated_frame_provider.h"
 #include "cc/layers/delegated_renderer_layer.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/texture_layer.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 32 matching lines @@
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/size_conversions.h"
 
 namespace content {
 
 namespace {
 
 const int kUndefinedOutputSurfaceId = -1;
+static const char kAsyncReadBackString[] = "Compositing.CopyFromSurfaceTime";
 
 void InsertSyncPointAndAckForCompositor(
     int renderer_host_id,
     uint32 output_surface_id,
     int route_id,
     const gpu::Mailbox& return_mailbox,
     const gfx::Size return_size) {
   cc::CompositorFrameAck ack;
   ack.gl_frame_data.reset(new cc::GLFrameData());
   if (!return_mailbox.IsZero()) {
     ack.gl_frame_data->mailbox = return_mailbox;
     ack.gl_frame_data->size = return_size;
     ack.gl_frame_data->sync_point =
         ImageTransportFactoryAndroid::GetInstance()->InsertSyncPoint();
   }
   RenderWidgetHostImpl::SendSwapCompositorFrameAck(
       route_id, output_surface_id, renderer_host_id, ack);
 }
 
 // Sends an acknowledgement to the renderer of a processed IME event.
 void SendImeEventAck(RenderWidgetHostImpl* host) {
   host->Send(new ViewMsg_ImeEventAck(host->GetRoutingID()));
 }
 
 void CopyFromCompositingSurfaceFinished(
     const base::Callback<void(bool, const SkBitmap&)>& callback,
     scoped_ptr<cc::SingleReleaseCallback> release_callback,
     scoped_ptr<SkBitmap> bitmap,
+    const base::TimeTicks& start_time,
     scoped_ptr<SkAutoLockPixels> bitmap_pixels_lock,
     bool result) {
   bitmap_pixels_lock.reset();
   release_callback->Run(0, false);
+  UMA_HISTOGRAM_TIMES(kAsyncReadBackString,
+                      base::TimeTicks::Now() - start_time);
   callback.Run(result, *bitmap);
 }
 
 bool UsingDelegatedRenderer() {
   bool using_delegated_renderer = false;
 
   using_delegated_renderer |= CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableDelegatedRenderer);
 
   using_delegated_renderer &= !CommandLine::ForCurrentProcess()->HasSwitch(
@@ skipping 513 matching lines @@
 void RenderWidgetHostViewAndroid::SetBackground(const SkBitmap& background) {
   RenderWidgetHostViewBase::SetBackground(background);
   host_->Send(new ViewMsg_SetBackground(host_->GetRoutingID(), background));
 }
 
 void RenderWidgetHostViewAndroid::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
     const base::Callback<void(bool, const SkBitmap&)>& callback,
     bool readback_config_rgb565) {
+  base::TimeTicks start_time = base::TimeTicks::Now();
   if (!using_synchronous_compositor_ && !IsSurfaceAvailableForCopy()) {
     callback.Run(false, SkBitmap());
     return;
   }
   ImageTransportFactoryAndroid* factory =
       ImageTransportFactoryAndroid::GetInstance();
   GLHelper* gl_helper = factory->GetGLHelper();
   if (!gl_helper)
     return;
   bool check_rgb565_support = gl_helper->CanUseRgb565Readback();
   if (readback_config_rgb565 && !check_rgb565_support) {
     LOG(ERROR) << "Readbackformat rgb565  not supported";
     callback.Run(false, SkBitmap());
     return;
   }
   const gfx::Display& display =
       gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
   float device_scale_factor = display.device_scale_factor();
 
   DCHECK_EQ(device_scale_factor,
             ui::GetImageScale(GetScaleFactorForView(this)));
 
   const gfx::Size& dst_size_in_pixel = ConvertViewSizeToPixel(this, dst_size);
   gfx::Rect src_subrect_in_pixel =
       ConvertRectToPixel(device_scale_factor, src_subrect);
 
   if (using_synchronous_compositor_) {
     SynchronousCopyContents(src_subrect_in_pixel, dst_size_in_pixel, callback);
+    UMA_HISTOGRAM_TIMES("Compositing.CopyFromSurfaceTimeSynchronous",
+                        base::TimeTicks::Now() - start_time);
     return;
   }
   scoped_ptr<cc::CopyOutputRequest> request;
   if (src_subrect_in_pixel.size() == dst_size_in_pixel) {
       request = cc::CopyOutputRequest::CreateBitmapRequest(base::Bind(
           &RenderWidgetHostViewAndroid::PrepareBitmapCopyOutputResult,
           dst_size_in_pixel,
+          start_time,
           callback));
   } else {
       request = cc::CopyOutputRequest::CreateRequest(base::Bind(
           &RenderWidgetHostViewAndroid::PrepareTextureCopyOutputResult,
           dst_size_in_pixel,
           readback_config_rgb565,
+          start_time,
           callback));
   }
   request->set_area(src_subrect_in_pixel);
   layer_->RequestCopyOfOutput(request.Pass());
 }
 
 void RenderWidgetHostViewAndroid::CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(bool)>& callback) {
@@ skipping 693 matching lines @@
   if (delegated_renderer_layer_.get())
     DestroyDelegatedContent();
   texture_id_in_layer_ = 0;
   RunAckCallbacks();
 }
 
 // static
 void RenderWidgetHostViewAndroid::PrepareTextureCopyOutputResult(
     const gfx::Size& dst_size_in_pixel,
     bool readback_config_rgb565,
+    const base::TimeTicks& start_time,
     const base::Callback<void(bool, const SkBitmap&)>& callback,
     scoped_ptr<cc::CopyOutputResult> result) {
   DCHECK(result->HasTexture());
   base::ScopedClosureRunner scoped_callback_runner(
       base::Bind(callback, false, SkBitmap()));
 
   if (!result->HasTexture() || result->IsEmpty() || result->size().IsEmpty())
     return;
 
   scoped_ptr<SkBitmap> bitmap(new SkBitmap);
@@ skipping 31 matching lines @@
       texture_mailbox.sync_point(),
       result->size(),
       gfx::Rect(result->size()),
       dst_size_in_pixel,
       pixels,
       readback_config_rgb565,
       base::Bind(&CopyFromCompositingSurfaceFinished,
                  callback,
                  base::Passed(&release_callback),
                  base::Passed(&bitmap),
+                 start_time,
                  base::Passed(&bitmap_pixels_lock)));
 }
 
 // static
 void RenderWidgetHostViewAndroid::PrepareBitmapCopyOutputResult(
     const gfx::Size& dst_size_in_pixel,
+    const base::TimeTicks& start_time,
     const base::Callback<void(bool, const SkBitmap&)>& callback,
     scoped_ptr<cc::CopyOutputResult> result) {
   DCHECK(result->HasBitmap());
   base::ScopedClosureRunner scoped_callback_runner(
       base::Bind(callback, false, SkBitmap()));
 
   if (!result->HasBitmap() || result->IsEmpty() || result->size().IsEmpty())
     return;
 
   scoped_ptr<SkBitmap> source = result->TakeBitmap();
   DCHECK(source);
   if (!source)
     return;
 
   DCHECK_EQ(source->width(), dst_size_in_pixel.width());
   DCHECK_EQ(source->height(), dst_size_in_pixel.height());
 
   ignore_result(scoped_callback_runner.Release());
+  UMA_HISTOGRAM_TIMES(kAsyncReadBackString,
+                      base::TimeTicks::Now() - start_time);
+
   callback.Run(true, *source);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(
     blink::WebScreenInfo* results) {
   const gfx::Display& display =
       gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
   results->rect = display.bounds();
   // TODO(husky): Remove any system controls from availableRect.
   results->availableRect = display.work_area();
   results->deviceScaleFactor = display.device_scale_factor();
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostView, public:
 
 // static
 RenderWidgetHostView*
 RenderWidgetHostView::CreateViewForWidget(RenderWidgetHost* widget) {
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(widget);
   return new RenderWidgetHostViewAndroid(rwhi, NULL);
 }
 
 } // namespace content