Mercurial > hg > orthanc
view OrthancFramework/Sources/MultiThreading/Semaphore.cpp @ 4984:c8cdf5163cd2
cppcheck
author | Alain Mazy <am@osimis.io> |
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date | Mon, 25 Apr 2022 18:54:45 +0200 |
parents | 43e613a7756b |
children | 0ea402b4d901 |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2022 Osimis S.A., Belgium * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/>. **/ #include "../PrecompiledHeaders.h" #include "Semaphore.h" #include "../OrthancException.h" namespace Orthanc { Semaphore::Semaphore(unsigned int availableResources) : availableResources_(availableResources) { } unsigned int Semaphore::GetAvailableResourcesCount() const { return availableResources_; } void Semaphore::Release(unsigned int resourceCount) { boost::mutex::scoped_lock lock(mutex_); availableResources_ += resourceCount; condition_.notify_one(); } void Semaphore::Acquire(unsigned int resourceCount) { boost::mutex::scoped_lock lock(mutex_); while (availableResources_ < resourceCount) { condition_.wait(lock); } availableResources_ -= resourceCount; } bool Semaphore::TryAcquire(unsigned int resourceCount) { boost::mutex::scoped_lock lock(mutex_); if (availableResources_ < resourceCount) { return false; } availableResources_ -= resourceCount; return true; } }