61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*
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Copyright (c) 2013, Project OSRM, Dennis Luxen, others
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SHARED_BARRIER_H
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#define SHARED_BARRIER_H
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#include <boost/interprocess/sync/named_mutex.hpp>
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#include <boost/interprocess/sync/named_condition.hpp>
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struct SharedBarriers
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{
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SharedBarriers()
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: pending_update_mutex(boost::interprocess::open_or_create, "pending_update"),
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update_mutex(boost::interprocess::open_or_create, "update"),
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query_mutex(boost::interprocess::open_or_create, "query"),
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no_running_queries_condition(boost::interprocess::open_or_create, "no_running_queries"),
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update_ongoing(false), number_of_queries(0)
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{
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}
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// Mutex to protect access to the boolean variable
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boost::interprocess::named_mutex pending_update_mutex;
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boost::interprocess::named_mutex update_mutex;
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boost::interprocess::named_mutex query_mutex;
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// Condition that no update is running
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boost::interprocess::named_condition no_running_queries_condition;
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// Is there an ongoing update?
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bool update_ongoing;
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// Is there any query?
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int number_of_queries;
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};
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#endif // SHARED_BARRIER_H
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