lock_conflict.c

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/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1996, 1997, 1998, 1999, 2000
 *      Sleepycat Software.  All rights reserved.
 */

#include "config.h"

#ifndef lint
static const char revid[] = "$Id: lock__conflict_8c-source.html,v 1.1 2008/06/08 10:19:56 sebdiaz Exp $";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#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 CDB_db_rw_conflicts[] = {
        /*              N   R   W */
        /*   N */       0,  0,  0,
        /*   R */       0,  0,  1,
        /*   W */       0,  1,  1
};

const u_int8_t CDB_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
};

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