lock_conflict.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 1997, 1998
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)lock_conflict.c 10.4 (Sleepycat) 11/20/98";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#endif
#include "db_int.h"
/*
* The conflict arrays are set up such that the row is the lock you
* are holding and the column is the lock that is desired.
*/
const u_int8_t db_rw_conflicts[] = {
/* N R W */
/* N */ 0, 0, 0,
/* R */ 0, 0, 1,
/* W */ 0, 1, 1
};
const u_int8_t db_riw_conflicts[] = {
/* N S X IX IS SIX */
/* N */ 0, 0, 0, 0, 0, 0,
/* S */ 0, 0, 1, 1, 0, 1,
/* X */ 1, 1, 1, 1, 1, 1,
/* IX */ 0, 1, 1, 0, 0, 0,
/* IS */ 0, 0, 1, 0, 0, 0,
/* SIX */ 0, 1, 1, 0, 0, 0
};