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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TASK_THREAD_POOL_TASK_H_
#define BASE_TASK_THREAD_POOL_TASK_H_
#include "base/base_export.h"
#include "base/containers/intrusive_heap.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/pending_task.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
namespace base {
namespace internal {
// A task is a unit of work inside the thread pool. Support for tracing and
// profiling inherited from PendingTask.
// TODO(etiennep): This class is now equivalent to PendingTask, remove it.
struct BASE_EXPORT Task : public PendingTask {
Task() = default;
// |posted_from| is the site the task was posted from. |task| is the closure
// to run. |delay| is a delay that must expire before the Task runs.
Task(const Location& posted_from,
OnceClosure task,
TimeTicks queue_time,
TimeDelta delay,
TimeDelta leeway = TimeDelta(),
int sequence_num = 0);
// |delayed_run_time| is the time when the task should be run.
Task(
const Location& posted_from,
OnceClosure task,
TimeTicks queue_time,
TimeTicks delayed_run_time,
TimeDelta leeway = TimeDelta(),
subtle::DelayPolicy delay_policy = subtle::DelayPolicy::kFlexibleNoSooner,
int sequence_num = 0);
Task(const TaskMetadata& metadata, OnceClosure task);
// Task is move-only to avoid mistakes that cause reference counts to be
// accidentally bumped.
Task(Task&& other) noexcept;
Task(const Task&) = delete;
Task& operator=(const Task&) = delete;
~Task() = default;
Task& operator=(Task&& other);
// Required by IntrusiveHeap.
void SetHeapHandle(const HeapHandle& handle) {}
// Required by IntrusiveHeap.
void ClearHeapHandle() {}
// Required by IntrusiveHeap.
HeapHandle GetHeapHandle() const { return HeapHandle::Invalid(); }
};
} // namespace internal
} // namespace base
#endif // BASE_TASK_THREAD_POOL_TASK_H_
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