Mercurial > hg > orthanc-webviewer
diff Orthanc/MultiThreading/SharedMessageQueue.h @ 0:02f7a0400a91
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 25 Feb 2015 13:45:35 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Orthanc/MultiThreading/SharedMessageQueue.h Wed Feb 25 13:45:35 2015 +0100 @@ -0,0 +1,82 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#pragma once + +#include "../IDynamicObject.h" + +#include <stdint.h> +#include <list> +#include <boost/thread.hpp> + +namespace Orthanc +{ + class SharedMessageQueue : public boost::noncopyable + { + private: + typedef std::list<IDynamicObject*> Queue; + + bool isFifo_; + unsigned int maxSize_; + Queue queue_; + boost::mutex mutex_; + boost::condition_variable elementAvailable_; + boost::condition_variable emptied_; + + public: + explicit SharedMessageQueue(unsigned int maxSize = 0); + + ~SharedMessageQueue(); + + // This transfers the ownership of the message + void Enqueue(IDynamicObject* message); + + // The caller is responsible to delete the dequeud message! + IDynamicObject* Dequeue(int32_t millisecondsTimeout); + + bool WaitEmpty(int32_t millisecondsTimeout); + + bool IsFifoPolicy() const + { + return isFifo_; + } + + bool IsLifoPolicy() const + { + return !isFifo_; + } + + void SetFifoPolicy(); + + void SetLifoPolicy(); + }; +}