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#ifndef QPID_BROKER_PERIODICTIMER_H
#define QPID_BROKER_PERIODICTIMER_H
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/sys/PeriodicTimer.h"
#include <vector>
#include <memory>
namespace qpid {
namespace broker {
/**
* A PeriodicTimer implementation that delegates to another PeriodicTimer.
*
* Tasks added while there is no delegate timer are stored.
* When a delgate timer is set, stored tasks are added to it.
*/
class DelegatingPeriodicTimer : public sys::PeriodicTimer
{
public:
DelegatingPeriodicTimer();
/** Add a task: if no delegate, store it. When delegate set, add stored tasks */
void add(const Task& task, sys::Duration period, const std::string& taskName);
/** Set the delegate, transfers ownership of delegate. */
void setDelegate(std::auto_ptr<PeriodicTimer> delegate);
bool hasDelegate() { return delegate.get(); }
private:
struct Entry { Task task; sys::Duration period; std::string name; };
typedef std::vector<Entry> Entries;
std::auto_ptr<PeriodicTimer> delegate;
Entries entries;
};
}} // namespace qpid::broker
#endif /*!QPID_BROKER_PERIODICTIMER_H*/
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