chromium/third_party/blink/renderer/platform/scheduler/common/single_thread_idle_task_runner.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_COMMON_SINGLE_THREAD_IDLE_TASK_RUNNER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_COMMON_SINGLE_THREAD_IDLE_TASK_RUNNER_H_

#include <map>
#include <utility>

#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "third_party/blink/renderer/platform/allow_discouraged_type.h"
#include "third_party/blink/renderer/platform/platform_export.h"

namespace blink {
namespace scheduler {
class IdleHelper;

// A SingleThreadIdleTaskRunner is a task runner for running idle tasks. Idle
// tasks have an unbound argument which is bound to a deadline
// (in base::TimeTicks) when they are run. The idle task is expected to
// complete by this deadline.
//
// This class uses base::RefCountedThreadSafe instead of WTF::ThreadSafe-
// RefCounted, which is against the general rule for code in platform/
// (see audit_non_blink_usage.py). This is because SingleThreadIdleTaskRunner
// is held by MainThreadSchedulerImpl and MainThreadSchedulerImpl is created
// before WTF (and PartitionAlloc) is initialized.
// TODO(yutak): Fix this.
class SingleThreadIdleTaskRunner
    : public base::RefCountedThreadSafe<SingleThreadIdleTaskRunner> { … };

}  // namespace scheduler
}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_COMMON_SINGLE_THREAD_IDLE_TASK_RUNNER_H_