Mercurial > hg > orthanc
diff Core/Cache/SharedArchive.cpp @ 1367:fe6e5a9f1ea2 query-retrieve
SharedArchive
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 22 May 2015 17:40:10 +0200 |
parents | |
children | b22ba8c5edbe |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Core/Cache/SharedArchive.cpp Fri May 22 17:40:10 2015 +0200 @@ -0,0 +1,124 @@ +/** + * 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/>. + **/ + + +#include "../PrecompiledHeaders.h" +#include "SharedArchive.h" + + +#include "../Uuid.h" + + +namespace Orthanc +{ + void SharedArchive::RemoveInternal(const std::string& id) + { + Archive::iterator it = archive_.find(id); + + if (it != archive_.end()) + { + delete it->second; + archive_.erase(it); + } + } + + + SharedArchive::Accessor::Accessor(SharedArchive& that, + const std::string& id) : + lock_(that.mutex_) + { + Archive::iterator it = that.archive_.find(id); + + if (it == that.archive_.end()) + { + throw OrthancException(ErrorCode_InexistentItem); + } + else + { + that.lru_.MakeMostRecent(id); + item_ = it->second; + } + } + + + SharedArchive::~SharedArchive() + { + for (Archive::iterator it = archive_.begin(); + it != archive_.end(); it++) + { + delete it->second; + } + } + + + std::string SharedArchive::Add(IDynamicObject* obj) + { + boost::mutex::scoped_lock lock(mutex_); + + if (archive_.size() == maxSize_) + { + // The quota has been reached, remove the oldest element + std::string oldest = lru_.RemoveOldest(); + RemoveInternal(oldest); + } + + std::string id = Toolbox::GenerateUuid(); + RemoveInternal(id); // Should never be useful because of UUID + archive_[id] = obj; + lru_.Add(id); + + return id; + } + + + void SharedArchive::Remove(const std::string& id) + { + boost::mutex::scoped_lock lock(mutex_); + RemoveInternal(id); + lru_.Invalidate(id); + } + + + void SharedArchive::List(std::list<std::string>& items) + { + items.clear(); + + boost::mutex::scoped_lock lock(mutex_); + + for (Archive::const_iterator it = archive_.begin(); + it != archive_.end(); it++) + { + items.push_back(it->first); + } + } +} + +