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47 lines
1.2 KiB
C++
47 lines
1.2 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 REFCONVERT_H
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#define REFCONVERT_H
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#include "kernel_types.h"
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/**
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* Convert BlockReference to BlockNumber
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*/
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inline
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BlockNumber refToBlock(BlockReference ref){
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return (BlockNumber)(ref >> 16);
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}
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/**
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* Convert BlockReference to NodeId
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*/
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inline
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NodeId refToNode(BlockReference ref){
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return (NodeId)(ref & 0xFFFF);
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}
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/**
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* Convert NodeId and BlockNumber to BlockReference
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*/
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inline
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BlockReference numberToRef(BlockNumber bnr, NodeId proc){
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return (((Uint32)bnr) << 16) + proc;
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}
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#endif
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