mirror of
https://github.com/gnss-sdr/gnss-sdr
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91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
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/*!
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* \file concurrent_queue.h
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* \brief This class implements a thread-safe std::queue
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* \author Javier Arribas, 2011. jarribas(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2011 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_CONCURRENT_QUEUE_H
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#define GNSS_SDR_CONCURRENT_QUEUE_H
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template<typename Data>
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/*!
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* \brief This class implements a thread-safe std::queue
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*
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* Thread-safe object queue which uses the library
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* boost_thread to perform MUTEX based on the code available at
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* http://www.justsoftwaresolutions.co.uk/threading/implementing-a-thread-safe-queue-using-condition-variables.html
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*/
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class concurrent_queue
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{
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private:
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std::queue<Data> the_queue;
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mutable boost::mutex the_mutex;
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boost::condition_variable the_condition_variable;
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public:
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void push(Data const& data)
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{
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boost::mutex::scoped_lock lock(the_mutex);
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the_queue.push(data);
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lock.unlock();
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the_condition_variable.notify_one();
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}
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bool empty() const
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{
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boost::mutex::scoped_lock lock(the_mutex);
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return the_queue.empty();
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}
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bool try_pop(Data& popped_value)
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{
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boost::mutex::scoped_lock lock(the_mutex);
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if(the_queue.empty())
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{
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return false;
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}
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popped_value=the_queue.front();
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the_queue.pop();
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return true;
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}
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void wait_and_pop(Data& popped_value)
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{
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boost::mutex::scoped_lock lock(the_mutex);
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while(the_queue.empty())
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{
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the_condition_variable.wait(lock);
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}
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popped_value=the_queue.front();
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the_queue.pop();
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}
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};
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#endif
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