components/scheduler/renderer/renderer_scheduler.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/scheduler/renderer/renderer_scheduler.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/trace_event/trace_event.h"
  10 #include "base/trace_event/trace_event_impl.h"
  11 #include "components/scheduler/child/scheduler_message_loop_delegate.h"
  12 #include "components/scheduler/common/scheduler_switches.h"
  13 #include "components/scheduler/renderer/null_renderer_scheduler.h"
  14 #include "components/scheduler/renderer/renderer_scheduler_impl.h"
  15
  16 namespace scheduler {
  17
  18 RendererScheduler::RendererScheduler() {
  19 }
  20
  21 RendererScheduler::~RendererScheduler() {
  22 }
  23
  24 // static
  25 scoped_ptr<RendererScheduler> RendererScheduler::Create() {
  26   // Ensure worker.scheduler, worker.scheduler.debug and
  27   // renderer.scheduler.debug appear as an option in about://tracing
  28   base::trace_event::TraceLog::GetCategoryGroupEnabled(
  29       TRACE_DISABLED_BY_DEFAULT("worker.scheduler"));
  30   base::trace_event::TraceLog::GetCategoryGroupEnabled(
  31       TRACE_DISABLED_BY_DEFAULT("worker.scheduler.debug"));
  32   base::trace_event::TraceLog::GetCategoryGroupEnabled(
  33       TRACE_DISABLED_BY_DEFAULT("renderer.scheduler.debug"));
  34
  35   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  36   if (command_line->HasSwitch(switches::kDisableBlinkScheduler)) {
  37     return make_scoped_ptr(new NullRendererScheduler());
  38   } else {
  39     base::MessageLoop* message_loop = base::MessageLoop::current();
  40     return make_scoped_ptr(new RendererSchedulerImpl(
  41         SchedulerMessageLoopDelegate::Create(message_loop)));
  42   }
  43 }
  44
  45 }  // namespace scheduler