cc: Set ui/gpu/cc/ipc/upload/raster thread priorities.

content/renderer/gpu/compositor_thread.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_thread.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "content/renderer/gpu/input_event_filter.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebActiveWheelFlingParameters.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositorInputHandlerClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositorInputHandler.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 
+#if defined(OS_ANDROID)
+// TODO(epenner): Move thread priorities to base. (crbug.com/170549)
+#include <sys/resource.h>
+#endif
+
 using WebKit::WebCompositorInputHandler;
 using WebKit::WebInputEvent;
 
 namespace content {
 
 //------------------------------------------------------------------------------
 
 class CompositorThread::InputHandlerWrapper
     : public WebKit::WebCompositorInputHandlerClient,
       public base::RefCountedThreadSafe<InputHandlerWrapper> {
@@ skipping 51 matching lines @@
   scoped_refptr<base::MessageLoopProxy> main_loop_;
 
   // Can only be accessed on the main thread.
   base::WeakPtr<RenderViewImpl> render_view_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(InputHandlerWrapper);
 };
 
 //------------------------------------------------------------------------------
 
+#if defined(OS_ANDROID)
+// TODO(epenner): Move thread priorities to base. (crbug.com/170549)
+namespace {
+void SetHighThreadPriority() {
+  int nice_value = -6; // High priority.
+  setpriority(PRIO_PROCESS, base::PlatformThread::CurrentId(), nice_value);
+}
+}
+#endif
+
 CompositorThread::CompositorThread(IPC::Listener* main_listener)
     : thread_("Compositor") {
   filter_ =
       new InputEventFilter(main_listener,
                            thread_.message_loop()->message_loop_proxy(),
                            base::Bind(&CompositorThread::HandleInputEvent,
                                       base::Unretained(this)));
+#if defined(OS_ANDROID)
+// TODO(epenner): Move thread priorities to base. (crbug.com/170549)
+  thread_.message_loop()->PostTask(FROM_HERE,
+                                   base::Bind(&SetHighThreadPriority));
+#endif
 }
 
 CompositorThread::~CompositorThread() {
 }
 
 IPC::ChannelProxy::MessageFilter* CompositorThread::GetMessageFilter() const {
   return filter_;
 }
 
 void CompositorThread::AddInputHandler(
@@ skipping 57 matching lines @@
     TRACE_EVENT0("CompositorThread::HandleInputEvent", "NoInputHandlerFound");
     // Oops, we no longer have an interested input handler..
     filter_->DidNotHandleInputEvent(true);
     return;
   }
 
   it->second->input_handler()->handleInputEvent(*input_event);
 }
 
 }  // namespace content