bt_reclaim.c

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1998-2005
 *      Sleepycat Software.  All rights reserved.
 *
 * $Id: bt_reclaim.c,v 12.2 2005/06/16 20:20:19 bostic Exp $
 */

#include "db_config.h"

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>

#include <string.h>
#endif

#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/btree.h"

/*
 * __bam_reclaim --
 *      Free a database.
 *
 * PUBLIC: int __bam_reclaim __P((DB *, DB_TXN *));
 */
int
__bam_reclaim(dbp, txn)
        DB *dbp;
        DB_TXN *txn;
{
        DBC *dbc;
        int ret, t_ret;

        /* Acquire a cursor. */
        if ((ret = __db_cursor(dbp, txn, &dbc, 0)) != 0)
                return (ret);

        /* Walk the tree, freeing pages. */
        ret = __bam_traverse(dbc,
            DB_LOCK_WRITE, dbc->internal->root, __db_reclaim_callback, dbc);

        /* Discard the cursor. */
        if ((t_ret = __db_c_close(dbc)) != 0 && ret == 0)
                ret = t_ret;

        return (ret);
}

/*
 * __bam_truncate --
 *      Truncate a database.
 *
 * PUBLIC: int __bam_truncate __P((DBC *, u_int32_t *));
 */
int
__bam_truncate(dbc, countp)
        DBC *dbc;
        u_int32_t *countp;
{
        db_trunc_param trunc;
        int ret;

        trunc.count = 0;
        trunc.dbc = dbc;

        /* Walk the tree, freeing pages. */
        ret = __bam_traverse(dbc,
            DB_LOCK_WRITE, dbc->internal->root, __db_truncate_callback, &trunc);

        if (countp != NULL)
                *countp = trunc.count;

        return (ret);
}

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