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the begginning

This commit is contained in:
david hill
2016-01-06 14:08:59 -06:00
parent 66a31debcb
commit f6afc42dd0
18251 changed files with 16460679 additions and 2 deletions

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/* Copyright (C) 2014 InfiniDB, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2 of
the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA. */
/*
* autoincrementmanager.h
*
* Created on: Dec 16, 2011
* Author: pleblanc
*/
#include <unistd.h>
#include <boost/thread.hpp>
#include <map>
#include "calpontsystemcatalog.h"
#ifndef AUTOINCREMENTMANAGER_H_
#define AUTOINCREMENTMANAGER_H_
#if defined(_MSC_VER) && defined(xxxBRMAUTOINCMGR_DLLEXPORT)
#define EXPORT __declspec(dllexport)
#else
#define EXPORT
#endif
namespace BRM {
class AutoincrementManager {
public:
EXPORT AutoincrementManager();
EXPORT virtual ~AutoincrementManager();
EXPORT void startSequence(uint32_t OID, uint64_t firstNum, uint32_t colWidth,
execplan::CalpontSystemCatalog::ColDataType colDataType);
EXPORT bool getAIRange(uint32_t OID, uint64_t count, uint64_t *firstNum);
EXPORT void resetSequence(uint32_t OID, uint64_t value);
EXPORT void getLock(uint32_t OID);
EXPORT void releaseLock(uint32_t OID);
EXPORT void deleteSequence(uint32_t OID);
private:
static const uint32_t lockTime = 30; // 30 seconds
struct sequence {
sequence() : value(0), overflow(0) { }
sequence(const sequence &s) : value(s.value), overflow(s.overflow) { }
sequence & operator=(const sequence &s) { value = s.value; overflow = s.overflow; return *this; }
uint64_t value;
uint64_t overflow;
boost::mutex lock;
};
boost::mutex lock;
std::map<uint64_t, sequence> sequences;
};
} /* namespace BRM */
#undef EXPORT
#endif /* AUTOINCREMENTMANAGER_H_ */