diff options
author | Ulrich Drepper <drepper@redhat.com> | 1998-06-09 15:16:55 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 1998-06-09 15:16:55 +0000 |
commit | bf7997b65c7887d2acda95f5201d818a19d81711 (patch) | |
tree | da3583de3a0b5892f90a4b1eb773a87b554ae37e /db2/btree/bt_search.c | |
parent | 7646e67e6cc4c738a7b402c60fed39d52db0433b (diff) | |
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Update.
1998-06-09 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_options): Define
__data member only for gcc. Reported by ak@muc.de.
* misc/mntent.h: Undo last patch.
* sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Undo last patch.
* misc/tst/mntent.c: Adjust code for this change.
* io/fts.c: Updated from a slightly more recent BSD version.
* io/fts.h: Likewise.
* libc.map: Add __libc_stack_end.
* db2/Makefile (routines): Add lock_region.
* db2/config.h: Update from db-2.4.14.
* db2/db.h: Likewise.
* db2/db_185.h: Likewise.
* db2/db_int.h: Likewise.
* db2/bt_close.c: Likewise.
* db2/bt_compare.c: Likewise.
* db2/bt_conv.c: Likewise.
* db2/bt_cursor.c: Likewise.
* db2/bt_delete.c: Likewise.
* db2/bt_open.c: Likewise.
* db2/bt_page.c: Likewise.
* db2/bt_put.c: Likewise.
* db2/bt_rec.c: Likewise.
* db2/bt_recno.c: Likewise.
* db2/bt_rsearch.c: Likewise.
* db2/bt_search.c: Likewise.
* db2/bt_split.c: Likewise.
* db2/bt_stat.c: Likewise.
* db2/btree.src: Likewise.
* db2/btree_auto.c: Likewise.
* db2/getlong.c: Likewise.
* db2/db_appinit.c: Likewise.
* db2/db_apprec.c: Likewise.
* db2/db_byteorder.c: Likewise.
* db2/db_err.c: Likewise.
* db2/db_log2.c: Likewise.
* db2/db_region.c: Likewise.
* db2/db_salloc.c: Likewise.
* db2/db_shash.c: Likewise.
* db2/db.c: Likewise.
* db2/db.src: Likewise.
* db2/db_auto.c: Likewise.
* db2/db_conv.c: Likewise.
* db2/db_dispatch.c: Likewise.
* db2/db_dup.c: Likewise.
* db2/db_overflow.c: Likewise.
* db2/db_pr.c: Likewise.
* db2/db_rec.c: Likewise.
* db2/db_ret.c: Likewise.
* db2/db_thread.c: Likewise.
* db2/db185.c: Likewise.
* db2/db185_int.h: Likewise.
* db2/dbm.c: Likewise.
* db2/hash.c: Likewise.
* db2/hash.src: Likewise.
* db2/hash_auto.c: Likewise.
* db2/hash_conv.c: Likewise.
* db2/hash_debug.c: Likewise.
* db2/hash_dup.c: Likewise.
* db2/hash_func.c: Likewise.
* db2/hash_page.c: Likewise.
* db2/hash_rec.c: Likewise.
* db2/hash_stat.c: Likewise.
* db2/btree.h: Likewise.
* db2/btree_ext.h: Likewise.
* db2/clib_ext.h: Likewise.
* db2/common_ext.h: Likewise.
* db2/cxx_int.h: Likewise.
* db2/db.h.src: Likewise.
* db2/db_185.h.src: Likewise.
* db2/db_am.h: Likewise.
* db2/db_auto.h: Likewise.
* db2/db_cxx.h: Likewise.
* db2/db_dispatch.h: Likewise.
* db2/db_ext.h: Likewise.
* db2/db_int.h.src: Likewise.
* db2/db_page.h: Likewise.
* db2/db_shash.h: Likewise.
* db2/db_swap.h: Likewise.
* db2/hash.h: Likewise.
* db2/hash_ext.h: Likewise.
* db2/lock.h: Likewise.
* db2/lock_ext.h: Likewise.
* db2/log.h: Likewise.
* db2/log_ext.h: Likewise.
* db2/mp.h: Likewise.
* db2/mp_ext.h: Likewise.
* db2/mutex_ext.h: Likewise.
* db2/os_ext.h: Likewise.
* db2/os_func.h: Likewise.
* db2/queue.h: Likewise.
* db2/shqueue.h: Likewise.
* db2/txn.h: Likewise.
* db2/lock.c: Likewise.
* db2/lock_conflict.c: Likewise.
* db2/lock_deadlock.c: Likewise.
* db2/lock_region.c: Likewise.
* db2/lock_util.c: Likewise.
* db2/log.c: Likewise.
* db2/log.src: Likewise.
* db2/log_archive.c: Likewise.
* db2/log_auto.c: Likewise.
* db2/log_compare.c: Likewise.
* db2/log_findckp.c: Likewise.
* db2/log_get.c: Likewise.
* db2/log_put.c: Likewise.
* db2/log_rec.c: Likewise.
* db2/log_register.c: Likewise.
* db2/mp_bh.c: Likewise.
* db2/mp_fget.c: Likewise.
* db2/mp_fopen.c: Likewise.
* db2/mp_fput.c: Likewise.
* db2/mp_fset.c: Likewise.
* db2/mp_open.c: Likewise.
* db2/mp_pr.c: Likewise.
* db2/mp_region.c: Likewise.
* db2/mp_sync.c: Likewise.
* db2/68020.gcc: Likewise.
* db2/mutex.c: Likewise.
* db2/parisc.gcc: Likewise.
* db2/parisc.hp: Likewise.
* db2/sco.cc: Likewise.
* db2/os_abs.c: Likewise.
* db2/os_alloc.c: Likewise.
* db2/os_config.c: Likewise.
* db2/os_dir.c: Likewise.
* db2/os_fid.c: Likewise.
* db2/os_fsync.c: Likewise.
* db2/os_map.c: Likewise.
* db2/os_oflags.c: Likewise.
* db2/os_open.c: Likewise.
* db2/os_rpath.c: Likewise.
* db2/os_rw.c: Likewise.
* db2/os_seek.c: Likewise.
* db2/os_sleep.c: Likewise.
* db2/os_spin.c: Likewise.
* db2/os_stat.c: Likewise.
* db2/os_unlink.c: Likewise.
* db2/db_archive.c: Likewise.
* db2/db_checkpoint.c: Likewise.
* db2/db_deadlock.c: Likewise.
* db2/db_dump.c: Likewise.
* db2/db_dump185.c: Likewise.
* db2/db_load.c: Likewise.
* db2/db_printlog.c: Likewise.
* db2/db_recover.c: Likewise.
* db2/db_stat.c: Likewise.
* db2/txn.c: Likewise.
* db2/txn.src: Likewise.
* db2/txn_auto.c: Likewise.
* db2/txn_rec.c: Likewise.
* elf/rtld.c: Move definition of __libc_stack_end to ...
* sysdeps/generic/dl-sysdep.h: ...here.
* sysdeps/unix/sysv/linux/fstatvfs.c: Handle nodiratime option.
* sysdeps/unix/sysv/linux/bits/statvfs.h: Define ST_NODIRATIME.
* sysdeps/unix/sysv/linux/sys/mount.h: Define MS_NODIRATIME.
1998-06-08 21:44 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/fstatvfs.c: Handle constant option string
from mntent correctly.
1998-06-06 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* sunrpc/Makefile (generated): Correct typo.
1998-06-04 Philip Blundell <philb@gnu.org>
* elf/elf.h (EM_ARM, et al.): New definitions.
* sysdeps/arm/dl-machine.h: Update for new draft ARM ELF ABI.
Diffstat (limited to 'db2/btree/bt_search.c')
-rw-r--r-- | db2/btree/bt_search.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/db2/btree/bt_search.c b/db2/btree/bt_search.c index c39c9af322..09ce46d90a 100644 --- a/db2/btree/bt_search.c +++ b/db2/btree/bt_search.c @@ -1,7 +1,7 @@ /*- * See the file LICENSE for redistribution information. * - * Copyright (c) 1996, 1997 + * Copyright (c) 1996, 1997, 1998 * Sleepycat Software. All rights reserved. */ /* @@ -47,15 +47,13 @@ #include "config.h" #ifndef lint -static const char sccsid[] = "@(#)bt_search.c 10.9 (Sleepycat) 11/18/97"; +static const char sccsid[] = "@(#)bt_search.c 10.15 (Sleepycat) 5/6/98"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES #include <sys/types.h> #include <errno.h> -#include <stdio.h> -#include <stdlib.h> #include <string.h> #endif @@ -68,13 +66,13 @@ static const char sccsid[] = "@(#)bt_search.c 10.9 (Sleepycat) 11/18/97"; * Search a btree for a key. * * PUBLIC: int __bam_search __P((DB *, - * PUBLIC: const DBT *, u_int, int, db_recno_t *, int *)); + * PUBLIC: const DBT *, u_int32_t, int, db_recno_t *, int *)); */ int __bam_search(dbp, key, flags, stop, recnop, exactp) DB *dbp; const DBT *key; - u_int flags; + u_int32_t flags; int stop, *exactp; db_recno_t *recnop; { @@ -109,8 +107,7 @@ __bam_search(dbp, key, flags, stop, recnop, exactp) * Retrieve the root page. */ pg = PGNO_ROOT; - stack = F_ISSET(dbp, DB_BT_RECNUM) && - (flags == S_INSERT || flags == S_DELETE); + stack = F_ISSET(dbp, DB_BT_RECNUM) && LF_ISSET(S_STACK); if ((ret = __bam_lget(dbp, 0, pg, stack ? DB_LOCK_WRITE : DB_LOCK_READ, &lock)) != 0) return (ret); @@ -179,6 +176,14 @@ __bam_search(dbp, key, flags, stop, recnop, exactp) if (LF_ISSET(S_EXACT)) goto notfound; + /* + * !!! + * Possibly returning a deleted record -- DB_SET_RANGE, + * DB_KEYFIRST and DB_KEYLAST don't require an exact + * match, and we don't want to walk multiple pages here + * to find an undeleted record. This is handled in the + * __bam_c_search() routine. + */ BT_STK_ENTER(t, h, base, lock, ret); return (ret); } @@ -249,7 +254,10 @@ match: *exactp = 1; /* * If we got here, we know that we have a btree leaf page. * - * If there are duplicates, go to the first/last one. + * If there are duplicates, go to the first/last one. This is + * safe because we know that we're not going to leave the page, + * all duplicate sets that are not on overflow pages exist on a + * single leaf page. */ if (LF_ISSET(S_DUPLAST)) while (indx < (db_indx_t)(NUM_ENT(h) - P_INDX) && @@ -261,8 +269,8 @@ match: *exactp = 1; indx -= P_INDX; /* - * Now check if we are allowed to return deleted item; if not - * find/last the first non-deleted item. + * Now check if we are allowed to return deleted items; if not + * find the next (or previous) non-deleted item. */ if (LF_ISSET(S_DELNO)) { if (LF_ISSET(S_DUPLAST)) |