| /* |
| * |
| * 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. |
| * |
| */ |
| #ifndef sys_Timer |
| #define sys_Timer |
| |
| #include "qpid/sys/TimerWarnings.h" |
| #include "qpid/sys/Monitor.h" |
| #include "qpid/sys/Mutex.h" |
| #include "qpid/sys/Thread.h" |
| #include "qpid/sys/Runnable.h" |
| #include "qpid/RefCounted.h" |
| #include "qpid/CommonImportExport.h" |
| #include <memory> |
| #include <queue> |
| |
| #include <boost/intrusive_ptr.hpp> |
| |
| namespace qpid { |
| namespace sys { |
| |
| class Timer; |
| |
| class QPID_COMMON_CLASS_EXTERN TimerTask : public RefCounted { |
| friend class Timer; |
| friend bool operator<(const boost::intrusive_ptr<TimerTask>&, |
| const boost::intrusive_ptr<TimerTask>&); |
| |
| std::string name; |
| AbsTime sortTime; |
| Duration period; |
| AbsTime nextFireTime; |
| Mutex callbackLock; |
| volatile bool cancelled; |
| |
| bool readyToFire() const; |
| void fireTask(); |
| |
| public: |
| QPID_COMMON_EXTERN TimerTask(Duration period, const std::string& name); |
| QPID_COMMON_EXTERN TimerTask(AbsTime fireTime, const std::string& name); |
| QPID_COMMON_EXTERN virtual ~TimerTask(); |
| |
| QPID_COMMON_EXTERN void setupNextFire(); |
| QPID_COMMON_EXTERN void restart(); |
| QPID_COMMON_EXTERN void cancel(); |
| |
| std::string getName() const { return name; } |
| |
| protected: |
| // Must be overridden with callback |
| virtual void fire() = 0; |
| }; |
| |
| // For the priority_queue order |
| bool operator<(const boost::intrusive_ptr<TimerTask>& a, |
| const boost::intrusive_ptr<TimerTask>& b); |
| |
| class QPID_COMMON_CLASS_EXTERN Timer : private Runnable { |
| qpid::sys::Monitor monitor; |
| std::priority_queue<boost::intrusive_ptr<TimerTask> > tasks; |
| qpid::sys::Thread runner; |
| bool active; |
| |
| // Runnable interface |
| void run(); |
| |
| public: |
| QPID_COMMON_EXTERN Timer(); |
| QPID_COMMON_EXTERN virtual ~Timer(); |
| |
| QPID_COMMON_EXTERN virtual void add(boost::intrusive_ptr<TimerTask> task); |
| QPID_COMMON_EXTERN virtual void start(); |
| QPID_COMMON_EXTERN virtual void stop(); |
| |
| protected: |
| QPID_COMMON_EXTERN virtual void fire(boost::intrusive_ptr<TimerTask> task); |
| QPID_COMMON_EXTERN virtual void drop(boost::intrusive_ptr<TimerTask> task); |
| // Allow derived classes to change the late/overran thresholds. |
| Duration late; |
| Duration overran; |
| Duration lateCancel; |
| TimerWarnings warn; |
| }; |
| |
| |
| }} |
| |
| |
| #endif |