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86 lines
2.6 KiB
C++
86 lines
2.6 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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/******************************************************************************
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* $Id: unique32generator.cpp 9210 2013-01-21 14:10:42Z rdempsey $
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*
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*****************************************************************************/
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/** @file Contains class that controls unique 32-bit generation for joblist.
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*
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*/
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#include "unique32generator.h"
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#include <stdint.h>
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#include <boost/thread.hpp>
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#include "dbrm.h"
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namespace joblist
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{
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/* static */ UniqueNumberGenerator* UniqueNumberGenerator::fUnique32Generator = 0;
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/* static */ boost::mutex UniqueNumberGenerator::fLock;
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//------------------------------------------------------------------------------
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// Accessor to singleton handle
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//------------------------------------------------------------------------------
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/* static */
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UniqueNumberGenerator* UniqueNumberGenerator::instance()
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{
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boost::mutex::scoped_lock lk(fLock);
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if (!fUnique32Generator)
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{
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fUnique32Generator = new UniqueNumberGenerator();
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}
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return fUnique32Generator;
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}
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//------------------------------------------------------------------------------
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// Deletes singleton instance (not necessary for application to call this,
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// but we make it available in case we ever want to clean up correctly; else
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// valgrind may report a memory leak for not deleting our heap memory).
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//------------------------------------------------------------------------------
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/* static */
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void UniqueNumberGenerator::deleteInstance()
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{
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boost::mutex::scoped_lock lk(fLock);
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if (fUnique32Generator)
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{
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delete fUnique32Generator;
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fUnique32Generator = 0;
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}
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}
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//------------------------------------------------------------------------------
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// Return a system-wide unique32 bit integer
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//------------------------------------------------------------------------------
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uint32_t UniqueNumberGenerator::getUnique32()
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{
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return fDbrm.getUnique32();
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}
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uint64_t UniqueNumberGenerator::getUnique64()
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{
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return fDbrm.getUnique64();
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}
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} // namespace joblist
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