blob: b41629b565b78ba7270cbfe87d9f80524d3ed65e [file] [log] [blame]
// Copyright 2018 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 "base/task/task_scheduler/scheduler_task_runner_delegate.h"
namespace base {
namespace internal {
namespace {
// Indicates whether a SchedulerTaskRunnerDelegate instance exists in the
// process. Used to tell when a task is posted from the main thread after the
// task environment was brought down in unit tests so that TaskRunners can
// return false on PostTask, letting callers know they should complete
// necessary work synchronously. A SchedulerTaskRunnerDelegate is usually
// instantiated before worker threads are started and deleted after worker
// threads have been joined. This makes the variable const while worker threads
// are up and as such it doesn't need to be atomic.
bool g_exists = false;
} // namespace
SchedulerTaskRunnerDelegate::SchedulerTaskRunnerDelegate() {
g_exists = true;
SchedulerTaskRunnerDelegate::~SchedulerTaskRunnerDelegate() {
g_exists = false;
// static
bool SchedulerTaskRunnerDelegate::Exists() {
return g_exists;
} // namespace internal
} // namespace base