82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
/*
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Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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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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#define JAM_FILE_ID 153
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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 Dbacc;
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friend class Dbtup;
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friend class Dbtux;
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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 = 13 );
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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 page_id;
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Uint32 page_idx;
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Uint32 transId1;
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Uint32 transId2;
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};
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#undef JAM_FILE_ID
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#endif
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