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https://github.com/MariaDB/server.git
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65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/* Copyright (C) 2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef ACC_LOCK_HPP
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#define ACC_LOCK_HPP
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#include "SignalData.hpp"
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/*
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* Lock or unlock tuple. If lock request is queued, the reply is later
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* via ACCKEYCONF.
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*/
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class AccLockReq {
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friend class Dbtux;
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friend class Dbacc;
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friend bool printACC_LOCKREQ(FILE *, const Uint32*, Uint32, Uint16);
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public:
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enum RequestType { // first byte
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LockShared = 1,
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LockExclusive = 2,
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Unlock = 3,
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Abort = 4,
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AbortWithConf = 5
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};
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enum RequestFlag { // second byte
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};
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enum ReturnCode {
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Success = 0,
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IsBlocked = 1, // was put in lock queue
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WouldBlock = 2, // if we add non-blocking option
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Refused = 3,
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NoFreeOp = 4
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};
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STATIC_CONST( LockSignalLength = 12 );
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STATIC_CONST( UndoSignalLength = 3 );
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private:
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Uint32 returnCode;
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Uint32 requestInfo;
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Uint32 accOpPtr;
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// rest only if lock request
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Uint32 userPtr;
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Uint32 userRef;
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Uint32 tableId;
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Uint32 fragId;
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Uint32 fragPtrI;
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Uint32 hashValue;
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Uint32 tupAddr;
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Uint32 transId1;
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Uint32 transId2;
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};
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#endif
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