Mercurial > hg > orthanc-stone
view Platforms/Generic/Oracle.cpp @ 270:2d64f4d39610 am-2
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author | am@osimis.io |
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date | Thu, 23 Aug 2018 14:45:04 +0200 |
parents | 5412adf19980 |
children | 46c5296d867e |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2018 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero 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 * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "Oracle.h" #include <Core/Logging.h> #include <Core/MultiThreading/SharedMessageQueue.h> #include <Core/OrthancException.h> #include <vector> #include <stdio.h> namespace OrthancStone { class Oracle::PImpl { private: enum State { State_Init, State_Started, State_Stopped }; boost::mutex* globalMutex_; boost::mutex oracleMutex_; State state_; std::vector<boost::thread*> threads_; Orthanc::SharedMessageQueue queue_; static void Worker(PImpl* that) { for (;;) { State state; { boost::mutex::scoped_lock lock(that->oracleMutex_); state = that->state_; } if (state == State_Stopped) { break; } std::auto_ptr<Orthanc::IDynamicObject> item(that->queue_.Dequeue(100)); if (item.get() != NULL) { IOracleCommand& command = dynamic_cast<IOracleCommand&>(*item); command.Execute(); // Random sleeping to test //boost::this_thread::sleep(boost::posix_time::milliseconds(50 * (1 + rand() % 10))); if (that->globalMutex_ != NULL) { boost::mutex::scoped_lock lock(*that->globalMutex_); command.Commit(); } else { command.Commit(); } } } } public: PImpl(boost::mutex* globalMutex, unsigned int threadCount) : globalMutex_(globalMutex), state_(State_Init), threads_(threadCount) { } ~PImpl() { if (state_ == State_Started) { LOG(ERROR) << "You should have manually called Oracle::Stop()"; Stop(); } } Orthanc::SharedMessageQueue& GetQueue() { return queue_; } void Submit(IOracleCommand* command) { std::auto_ptr<IOracleCommand> protection(command); if (command == NULL) { throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); } boost::mutex::scoped_lock lock(oracleMutex_); switch (state_) { case State_Init: case State_Started: queue_.Enqueue(protection.release()); break; case State_Stopped: LOG(ERROR) << "Cannot schedule a request to the Oracle after having " << "called Oracle::Stop()"; break; default: throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } } void Start() { boost::mutex::scoped_lock lock(oracleMutex_); if (state_ != State_Init) { throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); } for (size_t i = 0; i < threads_.size(); i++) { threads_[i] = new boost::thread(Worker, this); } state_ = State_Started; } void Stop() { { boost::mutex::scoped_lock lock(oracleMutex_); if (state_ != State_Started) { throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); } state_ = State_Stopped; } for (size_t i = 0; i < threads_.size(); i++) { if (threads_[i] != NULL) { if (threads_[i]->joinable()) { threads_[i]->join(); } delete threads_[i]; } } } }; Oracle::Oracle(boost::mutex& globalMutex, unsigned int threadCount) : pimpl_(new PImpl(&globalMutex, threadCount)) { } Oracle::Oracle(unsigned int threadCount) : pimpl_(new PImpl(NULL, threadCount)) { } void Oracle::Start() { pimpl_->Start(); } void Oracle::Submit(IOracleCommand* command) { pimpl_->Submit(command); } void Oracle::Stop() { pimpl_->Stop(); } void Oracle::WaitEmpty() { pimpl_->GetQueue().WaitEmpty(50); } }