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65 lines
1.9 KiB
C++
65 lines
1.9 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.h 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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#pragma once
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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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/** @brief Controls unique 32-bit generation for joblist
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*
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* Maintains a single DBRM connection that is used for the generation of all
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* unique 32-bit ints. All joblist classes should go through this singleton
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* class which maintains a single DBRM connection exclusively reserved for
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* this purpose.
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*/
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class UniqueNumberGenerator
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{
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public:
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static UniqueNumberGenerator* instance(); // singleton accessor
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static void deleteInstance(); // singleton cleanup
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uint32_t getUnique32(); // generate unique 32-bit int
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uint64_t getUnique64(); // generate unique 64-bit int
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private:
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UniqueNumberGenerator()
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{
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}
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~UniqueNumberGenerator()
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{
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}
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static UniqueNumberGenerator* fUnique32Generator;
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static boost::mutex fLock;
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BRM::DBRM fDbrm;
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};
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} // namespace joblist
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