gin/v8_platform.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 "gin/public/v8_platform.h"
   6
   7 #include "base/bind.h"
   8 #include "base/location.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "base/threading/worker_pool.h"
  11 #include "gin/per_isolate_data.h"
  12
  13 namespace gin {
  14
  15 namespace {
  16
  17 base::LazyInstance<V8Platform>::Leaky g_v8_platform = LAZY_INSTANCE_INITIALIZER;
  18
  19 }  // namespace
  20
  21 // static
  22 V8Platform* V8Platform::Get() { return g_v8_platform.Pointer(); }
  23
  24 V8Platform::V8Platform() {}
  25
  26 V8Platform::~V8Platform() {}
  27
  28 void V8Platform::CallOnBackgroundThread(
  29     v8::Task* task,
  30     v8::Platform::ExpectedRuntime expected_runtime) {
  31   base::WorkerPool::PostTask(
  32       FROM_HERE,
  33       base::Bind(&v8::Task::Run, base::Owned(task)),
  34       expected_runtime == v8::Platform::kLongRunningTask);
  35 }
  36
  37 void V8Platform::CallOnForegroundThread(v8::Isolate* isolate, v8::Task* task) {
  38   PerIsolateData::From(isolate)->message_loop_proxy()->PostTask(
  39       FROM_HERE, base::Bind(&v8::Task::Run, base::Owned(task)));
  40 }
  41
  42 double V8Platform::MonotonicallyIncreasingTime() {
  43   return base::TimeTicks::Now().ToInternalValue() /
  44       static_cast<double>(base::Time::kMicrosecondsPerSecond);
  45 }
  46
  47 }  // namespace gin