bt_reclaim.c
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上传日期:2022-05-23
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文件大小:2k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1998-2002
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: bt_reclaim.c,v 11.11 2002/03/29 20:46:26 bostic Exp $";
- #endif /* not lint */
- #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 = dbp->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 = dbc->c_close(dbc)) != 0 && ret == 0)
- ret = t_ret;
- return (ret);
- }
- /*
- * __bam_truncate --
- * Truncate a database.
- *
- * PUBLIC: int __bam_truncate __P((DB *, DB_TXN *, u_int32_t *));
- */
- int
- __bam_truncate(dbp, txn, countp)
- DB *dbp;
- DB_TXN *txn;
- u_int32_t *countp;
- {
- DBC *dbc;
- db_trunc_param trunc;
- int ret, t_ret;
- /* Acquire a cursor. */
- if ((ret = dbp->cursor(dbp, txn, &dbc, 0)) != 0)
- return (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);
- /* Discard the cursor. */
- if ((t_ret = dbc->c_close(dbc)) != 0 && ret == 0)
- ret = t_ret;
- *countp = trunc.count;
- return (ret);
- }