Mercurial > hg > orthanc
view Core/MultiThreading/ArrayFilledByThreads.cpp @ 1311:d1a430176401
integration db-changes->default
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 11 Feb 2015 10:51:45 +0100 |
parents | 6e7e5ed91c2d |
children |
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/** * 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 "ArrayFilledByThreads.h" #include "../MultiThreading/ThreadedCommandProcessor.h" #include "../OrthancException.h" namespace Orthanc { class ArrayFilledByThreads::Command : public ICommand { private: ArrayFilledByThreads& that_; size_t index_; public: Command(ArrayFilledByThreads& that, size_t index) : that_(that), index_(index) { } virtual bool Execute() { std::auto_ptr<IDynamicObject> obj(that_.filler_.GetFillerItem(index_)); if (obj.get() == NULL) { return false; } else { boost::mutex::scoped_lock lock(that_.mutex_); that_.array_[index_] = obj.release(); return true; } } }; void ArrayFilledByThreads::Clear() { for (size_t i = 0; i < array_.size(); i++) { if (array_[i]) delete array_[i]; } array_.clear(); filled_ = false; } void ArrayFilledByThreads::Update() { if (!filled_) { array_.resize(filler_.GetFillerSize()); Orthanc::ThreadedCommandProcessor processor(threadCount_); for (size_t i = 0; i < array_.size(); i++) { processor.Post(new Command(*this, i)); } processor.Join(); filled_ = true; } } ArrayFilledByThreads::ArrayFilledByThreads(IFiller& filler) : filler_(filler) { filled_ = false; threadCount_ = 4; } ArrayFilledByThreads::~ArrayFilledByThreads() { Clear(); } void ArrayFilledByThreads::Reload() { Clear(); Update(); } void ArrayFilledByThreads::Invalidate() { Clear(); } void ArrayFilledByThreads::SetThreadCount(unsigned int t) { if (t < 1) { throw OrthancException(ErrorCode_ParameterOutOfRange); } threadCount_ = t; } size_t ArrayFilledByThreads::GetSize() { Update(); return array_.size(); } IDynamicObject& ArrayFilledByThreads::GetItem(size_t index) { if (index >= GetSize()) { throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); } return *array_[index]; } }