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/*
* libjingle
* Copyright 2004--2006, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_BASE_TASKPARENT_H__
#define TALK_BASE_TASKPARENT_H__
#include <set>
#include "talk/base/basictypes.h"
#include "talk/base/scoped_ptr.h"
namespace talk_base {
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();
#ifdef _DEBUG
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;
scoped_ptr<ChildSet> children_;
DISALLOW_EVIL_CONSTRUCTORS(TaskParent);
};
} // namespace talk_base
#endif // TALK_BASE_TASKPARENT_H__
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