RefConvert.hpp
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上传日期:2022-05-23
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- /* Copyright (C) 2003 MySQL AB
- 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; either version 2 of the License, or
- (at your option) any later version.
- 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef REFCONVERT_H
- #define REFCONVERT_H
- #include "kernel_types.h"
- /**
- * Convert BlockReference to BlockNumber
- */
- inline
- BlockNumber refToBlock(BlockReference ref){
- return (BlockNumber)(ref >> 16);
- }
- /**
- * Convert BlockReference to NodeId
- */
- inline
- NodeId refToNode(BlockReference ref){
- return (NodeId)(ref & 0xFFFF);
- }
- /**
- * Convert NodeId and BlockNumber to BlockReference
- */
- inline
- BlockReference numberToRef(BlockNumber bnr, NodeId proc){
- return (((Uint32)bnr) << 16) + proc;
- }
- #endif