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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_BASE_TASKPARENT_H__
#define WEBRTC_BASE_TASKPARENT_H__
#include <memory>
#include <set>
#include "webrtc/base/checks.h"
#include "webrtc/base/constructormagic.h"
namespace rtc {
class Task;
class TaskRunner;
class TaskParent {
public:
TaskParent(Task *derived_instance, TaskParent *parent);
explicit TaskParent(TaskRunner *derived_instance);
virtual ~TaskParent();
TaskParent *GetParent() { return parent_; }
TaskRunner *GetRunner() { return runner_; }
bool AllChildrenDone();
bool AnyChildError();
#if RTC_DCHECK_IS_ON
bool IsChildTask(Task *task);
#endif
protected:
void OnStopped(Task *task);
void AbortAllChildren();
TaskParent *parent() {
return parent_;
}
private:
void Initialize();
void OnChildStopped(Task *child);
void AddChild(Task *child);
TaskParent *parent_;
TaskRunner *runner_;
bool child_error_;
typedef std::set<Task *> ChildSet;
std::unique_ptr<ChildSet> children_;
RTC_DISALLOW_COPY_AND_ASSIGN(TaskParent);
};
} // namespace rtc
#endif // WEBRTC_BASE_TASKPARENT_H__
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