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125 lines
2.8 KiB
C++
125 lines
2.8 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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* $Id$
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*
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*******************************************************************************/
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/*
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* we_tablelockgrabber.cpp
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*
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* Created on: Dec 19, 2011
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* Author: bpaul
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*/
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#include "brm.h"
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#include "brmtypes.h"
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using namespace BRM;
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#include <iostream>
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using namespace std;
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#include "we_sdhandler.h"
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#include "we_tablelockgrabber.h"
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namespace WriteEngine
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{
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uint64_t WETableLockGrabber::grabTableLock(std::vector<unsigned int> &PmList,
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uint32_t tableOID)
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{
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uint64_t aLockId;
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std::string aProcName = "cpimport";
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uint32_t aProcId = getpid();
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int32_t aSessId = -1;
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int32_t aTxnId = -1;
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try
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{
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aLockId = fRef.fDbrm.getTableLock(PmList, tableOID, &aProcName,
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&aProcId, &aSessId, &aTxnId, BRM::LOADING);
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}
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catch (std::exception &e)
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{
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cout << "ERROR: Failed to get Table Lock " << e.what() << endl;
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throw runtime_error(e.what());
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}
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if (aLockId == 0)
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{
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ostringstream oss;
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oss << " Table currently locked by process-" <<
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aProcName << "; pid-" << aProcId <<
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"; session-" << aSessId <<
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"; txn-" << aTxnId;
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throw runtime_error(oss.str());
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}
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//cout << "lock ID = " << aLockId << endl;
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//if (aLockId == 0)
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// cout << " existing owner name = " << aProcName << " pid = " <<
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// aProcId << " session = " << aSessId << endl;
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return aLockId;
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}
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bool WETableLockGrabber::releaseTableLock(uint64_t LockId)
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{
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bool aRet;
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//cout << "releasing lock " << LockId << endl;
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try
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{
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aRet = fRef.fDbrm.releaseTableLock(LockId);
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}
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catch (std::exception &e)
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{
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cout << "caught an exception: " << e.what() << endl;
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throw runtime_error(e.what());
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}
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return aRet;
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}
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bool WETableLockGrabber::changeTableLockState(uint64_t LockId)
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{
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bool aRet;
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//cout << "changing state of lock " << LockId << endl;
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try
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{
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aRet = fRef.fDbrm.changeState(LockId, BRM::CLEANUP);
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}
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catch (std::exception &e)
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{
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cout << "caught an exception: " << e.what() << endl;
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throw runtime_error(e.what());
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}
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return aRet;
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}
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} /* namespace WriteEngine */
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