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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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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 Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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// $Id: activestatementcounter.cpp 940 2013-01-21 14:11:31Z rdempsey $
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//
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#include <unistd.h>
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#include <boost/thread/mutex.hpp>
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using namespace boost;
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#include "activestatementcounter.h"
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void ActiveStatementCounter::incr(bool& counted)
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{
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if (counted)
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return;
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counted = true;
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boost::mutex::scoped_lock lk(fMutex);
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if (upperLimit > 0)
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while (fStatementCount >= upperLimit)
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{
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fStatementsWaiting++;
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condvar.wait(lk);
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--fStatementsWaiting;
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}
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fStatementCount++;
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}
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void ActiveStatementCounter::decr(bool& counted)
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{
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if (!counted)
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return;
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counted = false;
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boost::mutex::scoped_lock lk(fMutex);
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if (fStatementCount == 0)
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return;
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--fStatementCount;
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condvar.notify_one();
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}
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