components/scheduler/child/web_task_runner_impl.cc

// Copyright 2015 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 "components/scheduler/child/web_task_runner_impl.h"

#include "base/bind.h"
#include "base/location.h"
#include "components/scheduler/base/task_queue.h"
#include "components/scheduler/base/time_domain.h"
#include "third_party/WebKit/public/platform/WebTraceLocation.h"

namespace scheduler {

WebTaskRunnerImpl::WebTaskRunnerImpl(scoped_refptr<TaskQueue> task_queue)
    : task_queue_(task_queue) {}

WebTaskRunnerImpl::~WebTaskRunnerImpl() {}

void WebTaskRunnerImpl::postTask(const blink::WebTraceLocation& web_location,
                                 blink::WebTaskRunner::Task* task) {
  tracked_objects::Location location(web_location.functionName(),
                                     web_location.fileName(), -1, nullptr);
  task_queue_->PostTask(
      location,
      base::Bind(&WebTaskRunnerImpl::runTask,
                 base::Passed(scoped_ptr<blink::WebTaskRunner::Task>(task))));
}

void WebTaskRunnerImpl::postDelayedTask(
    const blink::WebTraceLocation& web_location,
    blink::WebTaskRunner::Task* task,
    double delayMs) {
  DCHECK_GE(delayMs, 0.0);
  tracked_objects::Location location(web_location.functionName(),
                                     web_location.fileName(), -1, nullptr);
  task_queue_->PostDelayedTask(
      location,
      base::Bind(&WebTaskRunnerImpl::runTask,
                 base::Passed(scoped_ptr<blink::WebTaskRunner::Task>(task))),
      base::TimeDelta::FromMillisecondsD(delayMs));
}

double WebTaskRunnerImpl::virtualTimeSeconds() const {
  return (task_queue_->GetTimeDomain()->Now() - base::TimeTicks::UnixEpoch())
      .InSecondsF();
}

double WebTaskRunnerImpl::monotonicallyIncreasingVirtualTimeSeconds() const {
  return task_queue_->GetTimeDomain()->Now().ToInternalValue() /
         static_cast<double>(base::Time::kMicrosecondsPerSecond);
}

blink::WebTaskRunner* WebTaskRunnerImpl::clone() {
  return new WebTaskRunnerImpl(task_queue_);
}

void WebTaskRunnerImpl::runTask(scoped_ptr<blink::WebTaskRunner::Task> task)
{
  task->run();
}

}  // namespace scheduler