diff options
Diffstat (limited to 'db2/btree/bt_stat.c')
| -rw-r--r-- | db2/btree/bt_stat.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/db2/btree/bt_stat.c b/db2/btree/bt_stat.c deleted file mode 100644 index 855ef40bbd..0000000000 --- a/db2/btree/bt_stat.c +++ /dev/null @@ -1,198 +0,0 @@ -/*- - * 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[] = "@(#)bt_stat.c 10.27 (Sleepycat) 11/25/98"; -#endif /* not lint */ - -#ifndef NO_SYSTEM_INCLUDES -#include <sys/types.h> - -#include <errno.h> -#include <string.h> -#endif - -#include "db_int.h" -#include "db_page.h" -#include "btree.h" - -/* - * __bam_stat -- - * Gather/print the btree statistics - * - * PUBLIC: int __bam_stat __P((DB *, void *, void *(*)(size_t), u_int32_t)); - */ -int -__bam_stat(dbp, spp, db_malloc, flags) - DB *dbp; - void *spp; - void *(*db_malloc) __P((size_t)); - u_int32_t flags; -{ - BTMETA *meta; - BTREE *t; - DBC *dbc; - DB_BTREE_STAT *sp; - DB_LOCK lock; - PAGE *h; - db_pgno_t lastpgno, pgno; - int ret, t_ret; - - DB_PANIC_CHECK(dbp); - - /* Check for invalid flags. */ - if ((ret = __db_statchk(dbp, flags)) != 0) - return (ret); - - if ((ret = dbp->cursor(dbp, NULL, &dbc, 0)) != 0) - return (ret); - - DEBUG_LWRITE(dbc, NULL, "bam_stat", NULL, NULL, flags); - - t = dbp->internal; - - if (spp == NULL) - return (0); - - /* Allocate and clear the structure. */ - if ((ret = __os_malloc(sizeof(*sp), db_malloc, &sp)) != 0) - goto err; - memset(sp, 0, sizeof(*sp)); - - /* If the app just wants the record count, make it fast. */ - if (flags == DB_RECORDCOUNT) { - pgno = PGNO_ROOT; - if ((ret = __bam_lget(dbc, 0, pgno, DB_LOCK_READ, &lock)) != 0) - goto err; - if ((ret = memp_fget(dbp->mpf, &pgno, 0, (PAGE **)&h)) != 0) - goto err; - - sp->bt_nrecs = RE_NREC(h); - - (void)memp_fput(dbp->mpf, h, 0); - (void)__BT_LPUT(dbc, lock); - goto done; - } - - /* Get the meta-data page. */ - pgno = PGNO_METADATA; - if ((ret = __bam_lget(dbc, 0, pgno, DB_LOCK_READ, &lock)) != 0) - goto err; - if ((ret = memp_fget(dbp->mpf, &pgno, 0, (PAGE **)&meta)) != 0) - goto err; - - /* Translate the metadata flags. */ - if (F_ISSET(meta, BTM_DUP)) - sp->bt_flags |= DB_DUP; - if (F_ISSET(meta, BTM_FIXEDLEN)) - sp->bt_flags |= DB_FIXEDLEN; - if (F_ISSET(meta, BTM_RECNUM)) - sp->bt_flags |= DB_RECNUM; - if (F_ISSET(meta, BTM_RENUMBER)) - sp->bt_flags |= DB_RENUMBER; - - /* Get the remaining metadata fields. */ - sp->bt_minkey = meta->minkey; - sp->bt_maxkey = meta->maxkey; - sp->bt_re_len = meta->re_len; - sp->bt_re_pad = meta->re_pad; - sp->bt_magic = meta->magic; - sp->bt_version = meta->version; - - /* Get the page size from the DB. */ - sp->bt_pagesize = dbp->pgsize; - - /* Walk the free list, counting pages. */ - for (sp->bt_free = 0, pgno = meta->free; pgno != PGNO_INVALID;) { - ++sp->bt_free; - - if ((ret = memp_fget(dbp->mpf, &pgno, 0, &h)) != 0) { - (void)memp_fput(dbp->mpf, meta, 0); - (void)__BT_TLPUT(dbc, lock); - goto err; - } - pgno = h->next_pgno; - (void)memp_fput(dbp->mpf, h, 0); - } - - /* Discard the meta-data page. */ - (void)memp_fput(dbp->mpf, meta, 0); - (void)__BT_TLPUT(dbc, lock); - - /* Determine the last page of the database. */ - if ((ret = memp_fget(dbp->mpf, &lastpgno, DB_MPOOL_LAST, &h)) != 0) - goto err; - (void)memp_fput(dbp->mpf, h, 0); - - /* Get the root page. */ - pgno = PGNO_ROOT; - if ((ret = __bam_lget(dbc, 0, PGNO_ROOT, DB_LOCK_READ, &lock)) != 0) - goto err; - if ((ret = memp_fget(dbp->mpf, &pgno, 0, &h)) != 0) { - (void)__BT_LPUT(dbc, lock); - goto err; - } - - /* Get the levels from the root page. */ - sp->bt_levels = h->level; - - /* Walk the page list, counting things. */ - for (;;) { - switch (TYPE(h)) { - case P_INVALID: - break; - case P_IBTREE: - case P_IRECNO: - ++sp->bt_int_pg; - sp->bt_int_pgfree += HOFFSET(h) - LOFFSET(h); - break; - case P_LBTREE: - ++sp->bt_leaf_pg; - sp->bt_leaf_pgfree += HOFFSET(h) - LOFFSET(h); - sp->bt_nrecs += NUM_ENT(h) / P_INDX; - break; - case P_LRECNO: - ++sp->bt_leaf_pg; - sp->bt_leaf_pgfree += HOFFSET(h) - LOFFSET(h); - sp->bt_nrecs += NUM_ENT(h); - break; - case P_DUPLICATE: - ++sp->bt_dup_pg; - /* XXX MARGO: sp->bt_dup_pgfree; */ - break; - case P_OVERFLOW: - ++sp->bt_over_pg; - /* XXX MARGO: sp->bt_over_pgfree; */ - break; - default: - (void)memp_fput(dbp->mpf, h, 0); - (void)__BT_LPUT(dbc, lock); - return (__db_pgfmt(dbp, pgno)); - } - - (void)memp_fput(dbp->mpf, h, 0); - (void)__BT_LPUT(dbc, lock); - - if (++pgno > lastpgno) - break; - if (__bam_lget(dbc, 0, pgno, DB_LOCK_READ, &lock)) - break; - if (memp_fget(dbp->mpf, &pgno, 0, &h) != 0) { - (void)__BT_LPUT(dbc, lock); - break; - } - } - -done: *(DB_BTREE_STAT **)spp = sp; - ret = 0; - -err: if ((t_ret = dbc->c_close(dbc)) != 0 && ret == 0) - ret = t_ret; - return (ret); -} |