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// Copyright 2014 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.
#ifndef CC_BASE_UNIQUE_NOTIFIER_H_
#define CC_BASE_UNIQUE_NOTIFIER_H_
#include "base/callback.h"
#include "base/memory/weak_ptr.h"
#include "cc/base/cc_export.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace cc {
class CC_EXPORT UniqueNotifier {
public:
// Configure this notifier to issue the |closure| notification when scheduled.
UniqueNotifier(base::SequencedTaskRunner* task_runner,
const base::Closure& closure);
// Destroying the notifier will ensure that no further notifications will
// happen from this class.
~UniqueNotifier();
// Schedule a notification to be run. If another notification is already
// pending, then only one notification will take place.
void Schedule();
private:
void Notify();
base::SequencedTaskRunner* task_runner_;
base::Closure closure_;
bool notification_pending_;
base::WeakPtrFactory<UniqueNotifier> weak_ptr_factory_;
};
} // namespace cc
#endif // CC_BASE_UNIQUE_NOTIFIER_H_
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