1 /* 2 Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License, version 2.0, 6 as published by the Free Software Foundation. 7 8 This program is also distributed with certain software (including 9 but not limited to OpenSSL) that is licensed under separate terms, 10 as designated in a particular file or component or in included license 11 documentation. The authors of MySQL hereby grant you an additional 12 permission to link the program and your derivative works with the 13 separately licensed software that they have included with MySQL. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License, version 2.0, for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 */ 24 25 #ifndef ACC_LOCK_HPP 26 #define ACC_LOCK_HPP 27 28 #include "SignalData.hpp" 29 30 #define JAM_FILE_ID 153 31 32 33 /* 34 * Lock or unlock tuple. If lock request is queued, the reply is later 35 * via ACCKEYCONF. 36 */ 37 class AccLockReq { 38 friend class Dbacc; 39 friend class Dbtup; 40 friend class Dbtux; 41 friend bool printACC_LOCKREQ(FILE *, const Uint32*, Uint32, Uint16); 42 public: 43 enum RequestType { // first byte 44 LockShared = 1, 45 LockExclusive = 2, 46 Unlock = 3, 47 Abort = 4, 48 AbortWithConf = 5 49 }; 50 enum RequestFlag { // second byte 51 }; 52 enum ReturnCode { 53 Success = 0, 54 IsBlocked = 1, // was put in lock queue 55 WouldBlock = 2, // if we add non-blocking option 56 Refused = 3, 57 NoFreeOp = 4 58 }; 59 STATIC_CONST( LockSignalLength = 14 ); 60 STATIC_CONST( UndoSignalLength = 3 ); 61 private: 62 Uint32 returnCode; 63 Uint32 requestInfo; 64 Uint32 accOpPtr; 65 // rest only if lock request 66 Uint32 userPtr; 67 Uint32 userRef; 68 Uint32 tableId; 69 Uint32 fragId; 70 Uint32 fragPtrI; 71 Uint32 hashValue; 72 Uint32 page_id; 73 Uint32 page_idx; 74 Uint32 transId1; 75 Uint32 transId2; 76 Uint32 isCopyFragScan; 77 }; 78 79 80 #undef JAM_FILE_ID 81 82 #endif 83