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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2010 Brian Aker
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* This program 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 2 of the License, or
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* (at your option) any later version.
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* This program 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include "plugin/user_locks/module.h"
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#include <boost/thread/locks.hpp>
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namespace user_locks {
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bool Barriers::create(const user_locks::Key &arg, drizzled::session_id_t owner)
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boost::unique_lock<boost::mutex> scope(mutex);
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return barrier_map.insert(std::make_pair(arg, new Barrier(owner))).second;
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bool Barriers::create(const user_locks::Key &arg, drizzled::session_id_t owner, int64_t wait_count)
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boost::unique_lock<boost::mutex> scope(mutex);
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return barrier_map.insert(std::make_pair(arg, new Barrier(owner, wait_count))).second;
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true -> release happened.
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false -> no release, we were not the owner
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indeterminate -> barrier was not found.
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boost::tribool Barriers::release(const user_locks::Key &arg, drizzled::session_id_t owner)
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boost::unique_lock<boost::mutex> scope(mutex);
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Map::iterator iter= barrier_map.find(arg);
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if ( iter == barrier_map.end())
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return boost::indeterminate;
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if (not (*iter).second->getOwner() == owner)
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(*iter).second->signal(); // We tell anyone left to start running
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(void)barrier_map.erase(arg);
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Barrier::shared_ptr Barriers::find(const user_locks::Key &arg)
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boost::unique_lock<boost::mutex> scope(mutex);
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Map::iterator iter= barrier_map.find(arg);
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if (iter != barrier_map.end())
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return (*iter).second;
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return Barrier::shared_ptr();
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void Barriers::Copy(Map &arg)
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boost::unique_lock<boost::mutex> scope(mutex);
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} /* namespace barriers */
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} /* namespace user_locks */