glibc/db2/hash/hash_rec.c
Ulrich Drepper af69217fea Update.
1998-01-26 00:57  Ulrich Drepper  <drepper@cygnus.com>

	* db2/Makefile (routines): Add os_alloc.
	* db2/db.h: Update from db-2.3.16.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/btree/bt_close.c: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_open.c: Likewise.
	* db2/btree/bt_page.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_rec.c: Likewise.
	* db2/btree/bt_recno.c: Likewise.
	* db2/btree/btree_auto.c: Likewise.
	* db2/common/db_appinit.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_err.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/common/db_shash.c: Likewise.
	* db2/db/db.c: Likewise.
	* db2/db/db_auto.c: Likewise.
	* db2/db/db_conv.c: Likewise.
	* db2/db/db_dispatch.c: Likewise.
	* db2/db/db_dup.c: Likewise.
	* db2/db/db_pr.c: Likewise.
	* db2/db/db_rec.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/hash/hash.c: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/hash/hash_dup.c: Likewise.
	* db2/hash/hash_page.c: Likewise.
	* db2/hash/hash_rec.c: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/clib_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_185.h.src: Likewise.
	* db2/include/db_am.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/hash_ext.h: Likewise.
	* db2/include/lock_ext.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/log_auto.h: Likewise.
	* db2/include/log_ext.h: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/mutex_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/os_func.h: Likewise.
	* db2/include/txn_ext.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_util.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log.src: Likewise.
	* db2/log/log_archive.c: Likewise.
	* db2/log/log_auto.c: Likewise.
	* db2/log/log_get.c: Likewise.
	* db2/log/log_put.c: Likewise.
	* db2/log/log_rec.c: Likewise.
	* db2/log/log_register.c: Likewise.
	* db2/mp/mp_bh.c: Likewise.
	* db2/mp/mp_fget.c: Likewise.
	* db2/mp/mp_fopen.c: Likewise.
	* db2/mp/mp_fput.c: Likewise.
	* db2/mp/mp_pr.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/os/os_alloc.c: Likewise.
	* db2/os/os_config.c: Likewise.
	* db2/os/os_stat.c: Likewise.
	* db2/progs/db_checkpoint/db_checkpoint.c: Likewise.
	* db2/progs/db_deadlock/db_deadlock.c: Likewise.
	* db2/progs/db_load/db_load.c: Likewise.
	* db2/progs/db_printlog/db_printlog.c: Likewise.
	* db2/progs/db_recover/db_recover.c: Likewise.
	* db2/progs/db_stat/db_stat.c: Likewise.
	* db2/txn/txn.c: Likewise.

	* elf/dl-close.c (_dl_close): Rename inner variable named map to imap.
	Unmap memory blocks in reverse order of allocation.
	Call munmap with load address added to offset.
	Bug reported by Miguel de Icaza.

	* locale/programs/ld-collate.c (collate_end_weight): Correctly fill
	up weight array.

	* localedata/locales/cs_CZ: Update by Michael Mraka
	<michael@informatics.muni.cz>.

	* misc/sys/syslog.h: Reformat a bit.  Don't declare vsyslog unless
	__USE_BSD.

	* nis/nss_compat/compat-grp.c: Correctly handle buffer overflow while
	reading line with fgets.
	* nis/nss_compat/compat-pwd.c: Likewise.
	* nis/nss_compat/compat-spwd.c: Likewise.
	* nss/nss_files/files-XXX.c: Likewise.
	* nss/nss_files/files-alias.c: Likewise.
	* shadow/fgetspent_r.c: Likewise.

	* string/strerror_r.c: Correct comment.  Patch by Andreas Jaeger.

	* sysdeps/unix/sysv/linux/bits/stat.h: Define _STATBUF_ST_RDEV.
	* sysdeps/unix/sysv/linux/alpha/bits/stat.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/stat.h: Likewise.

	* sysdeps/unix/sysv/linux/i386/sys/ucontext.h: Allocate room for
	FP register content in ucontext_t.

1998-01-22  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/libm-ieee754/s_modfl.c (modf): Correct
	calculation.  Patch by Markus Schoder
	<Markus.Schoder@dresdner-bank.de>.

	* math/libm-test.c (modf_test): Add more tests for modf.

	* sysdeps/unix/sysv/linux/sys/mman.h: Add const to mlock and
	munlock according to Unix98.

1998-01-25  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* nss/nss_files/files-network.c (LINE_PARSER): Set n_addrtype to
	AF_INET.

1998-01-21 07:22  H.J. Lu  <hjl@gnu.org>

	* sysdeps/posix/ttyname.c: Handle symbolic links.
	* sysdeps/posix/ttyname_r.c: Ditto.

1998-01-25 19:39  Ulrich Drepper  <drepper@cygnus.com>

	* db2/makedb.c (process_input): Write terminating \0 for value.
	(print_database): Simply print value string, don't use length.

1998-01-24  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* nss/nsswitch.c (__nss_configure_lookup): Correct test for early
	exit of loop.

1998-01-25  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/ypclnt.c: Don't set dom_client to NULL, or we will not
	close all sockets.

1998-01-25 14:54  Ulrich Drepper  <drepper@cygnus.com>

	* signal/Makefile (routines): Add sighold, sigrelse, sigignore, and
	sigset.
	* signal/sighold.c: New file.
	* signal/sigrelse.c: New file.
	* sysdeps/generic/sigignore.c: New file.
	* sysdeps/generic/sigset.c: New file.
	* sysdeps/posix/sigignore.c: New file.
	* sysdeps/posix/sigset.c: New file.
	* signal/signal.h: Add prototypes for new functions.

	* sysdeps/unix/sysv/linux/alpha/bits/signum.h: Define SIG_HOLD.
	* sysdeps/unix/sysv/linux/bits/signum.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/signum.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/signum.h: Likewise.

1998-01-23 00:16  Tim Waugh  <tim@cyberelk.demon.co.uk>

	* posix/wordexp.c: Added IFS field-splitting in parameter and
	command substitution.  Fixed an IFS-related bug that caused an
	infinite loop.

1998-01-25 12:38  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/Makefile (routines): Add getcontext, setcontext, makecontext,
	and swapcontext.
	* stdlib/ucontext.h: Correct prototypes.
	* sysdeps/generic/getcontext.c: New file.
	* sysdeps/generic/setcontext.c: New file.
	* sysdeps/generic/makecontext.c: New file.
	* sysdeps/generic/swapcontext.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Makefile: Removed.

1998-01-25 04:07  Ulrich Drepper  <drepper@cygnus.com>

	* resource/sys/resource.h: Remove #include of ulimit.h which is
	not allowed by SUSv2 and not available on other systems.
	* sysdeps/unix/sysv/linux/ulimit.c: Include ulimit.h.

	* streams/Makefile: New file.
	* streams/stropts.h: New file.
	* sysdeps/generic/bits/stropts.h: New file.
	* sysdeps/generic/isastream.c: New file.
	* sysdeps/generic/getmsg.c: New file.
	* sysdeps/generic/getpmsg.c: New file.
	* sysdeps/generic/putmsg.c: New file.
	* sysdeps/generic/putpmsg.c: New file.
	* sysdeps/generic/fattach.c: New file.
	* sysdeps/generic/fdetach.c: New file.
	* sysdeps/unix/inet/Subdirs: Add streams.
	* sysdeps/generic/bits/types.h: Add definition of __t_scalar_t and
	__t_uscalar_t.
	* sysdeps/unix/sysv/linux/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise.

	* sysdeps/mach/_strerror.c: Follow changes of generic version to
	handle small buffers correctly.

1998-01-24 17:31  H.J. Lu  <hjl@gnu.org>

	* sysdeps/alpha/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
	Remove the 3rd arg and add declaration for _dl_runtime_resolve
	and _dl_runtime_profile.

1998-01-25 02:42  Ulrich Drepper  <drepper@cygnus.com>

	* include/cpio.h: New file.  Mainly copied from GNU cpio.
	* posix/Makefile (headers): Add cpio.h.
1998-01-25 17:01:47 +00:00

949 lines
25 KiB
C

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 1997
* Sleepycat Software. All rights reserved.
*/
/*
* Copyright (c) 1995, 1996
* Margo Seltzer. All rights reserved.
*/
/*
* Copyright (c) 1995, 1996
* The President and Fellows of Harvard University. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Margo Seltzer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)hash_rec.c 10.15 (Sleepycat) 12/4/97";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#endif
#include "db_int.h"
#include "shqueue.h"
#include "db_page.h"
#include "hash.h"
#include "btree.h"
#include "log.h"
#include "db_dispatch.h"
#include "common_ext.h"
/*
* __ham_insdel_recover --
*
* PUBLIC: int __ham_insdel_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_insdel_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_insdel_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
PAGE *pagep;
u_int32_t op;
int cmp_n, cmp_p, getmeta, ret;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_insdel_print);
REC_INTRO(__ham_insdel_read);
ret = memp_fget(mpf, &argp->pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
*lsnp = argp->prev_lsn;
ret = 0;
goto out;
} else if ((ret = memp_fget(mpf, &argp->pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
/*
* Two possible things going on:
* redo a delete/undo a put: delete the item from the page.
* redo a put/undo a delete: add the item to the page.
* If we are undoing a delete, then the information logged is the
* entire entry off the page, not just the data of a dbt. In
* this case, we want to copy it back onto the page verbatim.
* We do this by calling __putitem with the type H_OFFPAGE instead
* of H_KEYDATA.
*/
op = OPCODE_OF(argp->opcode);
if ((op == DELPAIR && cmp_n == 0 && !redo) ||
(op == PUTPAIR && cmp_p == 0 && redo)) {
/* Need to redo a PUT or undo a delete. */
__ham_putitem(pagep, &argp->key,
!redo || PAIR_ISKEYBIG(argp->opcode) ?
H_OFFPAGE : H_KEYDATA);
__ham_putitem(pagep, &argp->data,
!redo || PAIR_ISDATABIG(argp->opcode) ?
H_OFFPAGE : H_KEYDATA);
LSN(pagep) = redo ? *lsnp : argp->pagelsn;
if ((ret = __ham_put_page(file_dbp, pagep, 1)) != 0)
goto out;
} else if ((op == DELPAIR && cmp_p == 0 && redo)
|| (op == PUTPAIR && cmp_n == 0 && !redo)) {
/* Need to undo a put or redo a delete. */
__ham_dpair(file_dbp, pagep, argp->ndx);
LSN(pagep) = redo ? *lsnp : argp->pagelsn;
if ((ret = __ham_put_page(file_dbp, (PAGE *)pagep, 1)) != 0)
goto out;
} else
if ((ret = __ham_put_page(file_dbp, (PAGE *)pagep, 0)) != 0)
goto out;
/* Return the previous LSN. */
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_newpage_recover --
* This log message is used when we add/remove overflow pages. This
* message takes care of the pointer chains, not the data on the pages.
*
* PUBLIC: int __ham_newpage_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_newpage_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_newpage_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
PAGE *pagep;
int cmp_n, cmp_p, change, getmeta, ret;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_newpage_print);
REC_INTRO(__ham_newpage_read);
ret = memp_fget(mpf, &argp->new_pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
ret = 0;
goto ppage;
} else if ((ret = memp_fget(mpf, &argp->new_pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
/*
* There are potentially three pages we need to check: the one
* that we created/deleted, the one before it and the one after
* it.
*/
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
change = 0;
if ((cmp_p == 0 && redo && argp->opcode == PUTOVFL) ||
(cmp_n == 0 && !redo && argp->opcode == DELOVFL)) {
/* Redo a create new page or undo a delete new page. */
P_INIT(pagep, file_dbp->pgsize, argp->new_pgno,
argp->prev_pgno, argp->next_pgno, 0, P_HASH);
change = 1;
} else if ((cmp_p == 0 && redo && argp->opcode == DELOVFL) ||
(cmp_n == 0 && !redo && argp->opcode == PUTOVFL)) {
/*
* Redo a delete or undo a create new page. All we
* really need to do is change the LSN.
*/
change = 1;
}
if (!change) {
if ((ret = __ham_put_page(file_dbp, (PAGE *)pagep, 0)) != 0)
goto out;
} else {
LSN(pagep) = redo ? *lsnp : argp->pagelsn;
if ((ret = __ham_put_page(file_dbp, (PAGE *)pagep, 1)) != 0)
goto out;
}
/* Now do the prev page. */
ppage: if (argp->prev_pgno != PGNO_INVALID) {
ret = memp_fget(mpf, &argp->prev_pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist.
* That is equivalent to having a pagelsn of 0,
* so we would not have to undo anything. In
* this case, don't bother creating a page.
*/
ret = 0;
goto npage;
} else if ((ret =
memp_fget(mpf, &argp->prev_pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->prevlsn);
change = 0;
if ((cmp_p == 0 && redo && argp->opcode == PUTOVFL) ||
(cmp_n == 0 && !redo && argp->opcode == DELOVFL)) {
/* Redo a create new page or undo a delete new page. */
pagep->next_pgno = argp->new_pgno;
change = 1;
} else if ((cmp_p == 0 && redo && argp->opcode == DELOVFL) ||
(cmp_n == 0 && !redo && argp->opcode == PUTOVFL)) {
/* Redo a delete or undo a create new page. */
pagep->next_pgno = argp->next_pgno;
change = 1;
}
if (!change) {
if ((ret = __ham_put_page(file_dbp, (PAGE *)pagep, 0)) != 0)
goto out;
} else {
LSN(pagep) = redo ? *lsnp : argp->prevlsn;
if ((ret = __ham_put_page(file_dbp, (PAGE *)pagep, 1)) != 0)
goto out;
}
}
/* Now time to do the next page */
npage: if (argp->next_pgno != PGNO_INVALID) {
ret = memp_fget(mpf, &argp->next_pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist.
* That is equivalent to having a pagelsn of 0,
* so we would not have to undo anything. In
* this case, don't bother creating a page.
*/
*lsnp = argp->prev_lsn;
ret = 0;
goto out;
} else if ((ret =
memp_fget(mpf, &argp->next_pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->nextlsn);
change = 0;
if ((cmp_p == 0 && redo && argp->opcode == PUTOVFL) ||
(cmp_n == 0 && !redo && argp->opcode == DELOVFL)) {
/* Redo a create new page or undo a delete new page. */
pagep->prev_pgno = argp->new_pgno;
change = 1;
} else if ((cmp_p == 0 && redo && argp->opcode == DELOVFL) ||
(cmp_n == 0 && !redo && argp->opcode == PUTOVFL)) {
/* Redo a delete or undo a create new page. */
pagep->prev_pgno = argp->prev_pgno;
change = 1;
}
if (!change) {
if ((ret =
__ham_put_page(file_dbp, (PAGE *)pagep, 0)) != 0)
goto out;
} else {
LSN(pagep) = redo ? *lsnp : argp->nextlsn;
if ((ret =
__ham_put_page(file_dbp, (PAGE *)pagep, 1)) != 0)
goto out;
}
}
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_replace_recover --
* This log message refers to partial puts that are local to a single
* page. You can think of them as special cases of the more general
* insdel log message.
*
* PUBLIC: int __ham_replace_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_replace_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_replace_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
DBT dbt;
HTAB *hashp;
PAGE *pagep;
int32_t grow;
int change, cmp_n, cmp_p, getmeta, ret;
u_int8_t *hk;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_replace_print);
REC_INTRO(__ham_replace_read);
ret = memp_fget(mpf, &argp->pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
*lsnp = argp->prev_lsn;
ret = 0;
goto out;
} else if ((ret = memp_fget(mpf, &argp->pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
if (cmp_p == 0 && redo) {
change = 1;
/* Reapply the change as specified. */
dbt.data = argp->newitem.data;
dbt.size = argp->newitem.size;
grow = argp->newitem.size - argp->olditem.size;
LSN(pagep) = *lsnp;
} else if (cmp_n == 0 && !redo) {
change = 1;
/* Undo the already applied change. */
dbt.data = argp->olditem.data;
dbt.size = argp->olditem.size;
grow = argp->olditem.size - argp->newitem.size;
LSN(pagep) = argp->pagelsn;
} else {
change = 0;
grow = 0;
}
if (change) {
__ham_onpage_replace(pagep,
file_dbp->pgsize, argp->ndx, argp->off, grow, &dbt);
if (argp->makedup) {
hk = P_ENTRY(pagep, argp->ndx);
if (redo)
HPAGE_PTYPE(hk) = H_DUPLICATE;
else
HPAGE_PTYPE(hk) = H_KEYDATA;
}
}
if ((ret = __ham_put_page(file_dbp, pagep, change)) != 0)
goto out;
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_newpgno_recover --
* This log message is used when allocating or deleting an overflow
* page. It takes care of modifying the meta data.
*
* PUBLIC: int __ham_newpgno_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_newpgno_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_newpgno_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
PAGE *pagep;
int change, cmp_n, cmp_p, getmeta, ret;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_newpgno_print);
REC_INTRO(__ham_newpgno_read);
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
/*
* There are two phases to the recovery here. First we need
* to update the meta data; then we need to update the page.
* We'll do the meta-data first.
*/
cmp_n = log_compare(lsnp, &hashp->hdr->lsn);
cmp_p = log_compare(&hashp->hdr->lsn, &argp->metalsn);
change = 0;
if ((cmp_p == 0 && redo && argp->opcode == ALLOCPGNO) ||
(cmp_n == 0 && !redo && argp->opcode == DELPGNO)) {
/* Need to redo an allocation or undo a deletion. */
hashp->hdr->last_freed = argp->free_pgno;
if (redo && argp->old_pgno != 0) /* Must be ALLOCPGNO */
hashp->hdr->spares[hashp->hdr->ovfl_point]++;
change = 1;
} else if (cmp_p == 0 && redo && argp->opcode == DELPGNO) {
/* Need to redo a deletion */
hashp->hdr->last_freed = argp->pgno;
change = 1;
} else if (cmp_n == 0 && !redo && argp->opcode == ALLOCPGNO) {
/* undo an allocation. */
if (argp->old_pgno == 0)
hashp->hdr->last_freed = argp->pgno;
else {
hashp->hdr->spares[hashp->hdr->ovfl_point]--;
hashp->hdr->last_freed = 0;
}
change = 1;
}
if (change) {
hashp->hdr->lsn = redo ? *lsnp : argp->metalsn;
F_SET(file_dbp, DB_HS_DIRTYMETA);
}
/* Now check the newly allocated/freed page. */
ret = memp_fget(mpf, &argp->pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
*lsnp = argp->prev_lsn;
ret = 0;
goto out;
} else if ((ret = memp_fget(mpf, &argp->pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
change = 0;
if (cmp_p == 0 && redo && argp->opcode == ALLOCPGNO) {
/* Need to redo an allocation. */
P_INIT(pagep, file_dbp->pgsize, argp->pgno, PGNO_INVALID,
PGNO_INVALID, 0, argp->new_type);
change = 1;
} else if (cmp_n == 0 && !redo && argp->opcode == DELPGNO) {
/* Undoing a delete. */
P_INIT(pagep, file_dbp->pgsize, argp->pgno, PGNO_INVALID,
argp->old_pgno, 0, argp->old_type);
change = 1;
} else if ((cmp_p == 0 && redo && argp->opcode == DELPGNO) ||
(cmp_n == 0 && !redo && argp->opcode == ALLOCPGNO)) {
/* Need to redo a deletion or undo an allocation. */
NEXT_PGNO(pagep) = argp->free_pgno;
TYPE(pagep) = P_INVALID;
change = 1;
}
if (change)
LSN(pagep) = redo ? *lsnp : argp->pagelsn;
if ((ret = __ham_put_page(file_dbp, pagep, change)) != 0)
goto out;
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_splitmeta_recover --
* This is the meta-data part of the split. Records the new and old
* bucket numbers and the new/old mask information.
*
* PUBLIC: int __ham_splitmeta_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_splitmeta_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_splitmeta_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
int change, cmp_n, cmp_p, getmeta, ret;
u_int32_t pow;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_splitmeta_print);
REC_INTRO(__ham_splitmeta_read);
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
/*
* There are two phases to the recovery here. First we need
* to update the meta data; then we need to update the page.
* We'll do the meta-data first.
*/
cmp_n = log_compare(lsnp, &hashp->hdr->lsn);
cmp_p = log_compare(&hashp->hdr->lsn, &argp->metalsn);
change = 0;
if (cmp_p == 0 && redo) {
/* Need to redo the split information. */
hashp->hdr->max_bucket = argp->bucket + 1;
pow = __db_log2(hashp->hdr->max_bucket + 1);
if (pow > hashp->hdr->ovfl_point) {
hashp->hdr->spares[pow] =
hashp->hdr->spares[hashp->hdr->ovfl_point];
hashp->hdr->ovfl_point = pow;
}
if (hashp->hdr->max_bucket > hashp->hdr->high_mask) {
hashp->hdr->low_mask = hashp->hdr->high_mask;
hashp->hdr->high_mask =
hashp->hdr->max_bucket | hashp->hdr->low_mask;
}
change = 1;
} else if (cmp_n == 0 && !redo) {
/* Need to undo the split information. */
hashp->hdr->max_bucket = argp->bucket;
hashp->hdr->ovfl_point = argp->ovflpoint;
hashp->hdr->spares[hashp->hdr->ovfl_point] = argp->spares;
pow = 1 << __db_log2(hashp->hdr->max_bucket + 1);
hashp->hdr->high_mask = pow - 1;
hashp->hdr->low_mask = (pow >> 1) - 1;
change = 1;
}
if (change) {
hashp->hdr->lsn = redo ? *lsnp : argp->metalsn;
F_SET(file_dbp, DB_HS_DIRTYMETA);
}
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_splitdata_recover --
*
* PUBLIC: int __ham_splitdata_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_splitdata_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_splitdata_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
PAGE *pagep;
int change, cmp_n, cmp_p, getmeta, ret;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_splitdata_print);
REC_INTRO(__ham_splitdata_read);
ret = memp_fget(mpf, &argp->pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
*lsnp = argp->prev_lsn;
ret = 0;
goto out;
} else if ((ret = memp_fget(mpf, &argp->pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
/*
* There are two types of log messages here, one for the old page
* and one for the new pages created. The original image in the
* SPLITOLD record is used for undo. The image in the SPLITNEW
* is used for redo. We should never have a case where there is
* a redo operation and the SPLITOLD record is on disk, but not
* the SPLITNEW record. Therefore, we only have work to do when
* redo NEW messages and undo OLD messages, but we have to update
* LSNs in both cases.
*/
change = 0;
if (cmp_p == 0 && redo) {
if (argp->opcode == SPLITNEW)
/* Need to redo the split described. */
memcpy(pagep, argp->pageimage.data,
argp->pageimage.size);
LSN(pagep) = *lsnp;
change = 1;
} else if (cmp_n == 0 && !redo) {
if (argp->opcode == SPLITOLD) {
/* Put back the old image. */
memcpy(pagep, argp->pageimage.data,
argp->pageimage.size);
} else
P_INIT(pagep, file_dbp->pgsize, argp->pgno,
PGNO_INVALID, PGNO_INVALID, 0, P_HASH);
LSN(pagep) = argp->pagelsn;
change = 1;
}
if ((ret = __ham_put_page(file_dbp, pagep, change)) != 0)
goto out;
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_ovfl_recover --
* This message is generated when we initialize a set of overflow pages.
*
* PUBLIC: int __ham_ovfl_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_ovfl_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_ovfl_args *argp;
DB *mdbp, *file_dbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
PAGE *pagep;
db_pgno_t max_pgno, pgno;
int cmp_n, cmp_p, getmeta, ret;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_ovfl_print);
REC_INTRO(__ham_ovfl_read);
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
cmp_n = log_compare(lsnp, &hashp->hdr->lsn);
cmp_p = log_compare(&hashp->hdr->lsn, &argp->metalsn);
if (cmp_p == 0 && redo) {
/* Redo the allocation. */
hashp->hdr->last_freed = argp->start_pgno;
hashp->hdr->spares[argp->ovflpoint] += argp->npages;
hashp->hdr->lsn = *lsnp;
F_SET(file_dbp, DB_HS_DIRTYMETA);
} else if (cmp_n == 0 && !redo) {
hashp->hdr->last_freed = argp->free_pgno;
hashp->hdr->spares[argp->ovflpoint] -= argp->npages;
hashp->hdr->lsn = argp->metalsn;
F_SET(file_dbp, DB_HS_DIRTYMETA);
}
max_pgno = argp->start_pgno + argp->npages - 1;
ret = 0;
for (pgno = argp->start_pgno; pgno <= max_pgno; pgno++) {
ret = memp_fget(mpf, &pgno, 0, &pagep);
if (ret != 0) {
if (redo && (ret = memp_fget(mpf, &pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
else if (!redo) {
(void)__ham_put_page(file_dbp, pagep, 0);
continue;
}
}
if (redo && log_compare((const DB_LSN *)lsnp,
(const DB_LSN *)&LSN(pagep)) > 0) {
P_INIT(pagep, file_dbp->pgsize, pgno, PGNO_INVALID,
pgno == max_pgno ? argp->free_pgno : pgno + 1,
0, P_HASH);
LSN(pagep) = *lsnp;
ret = __ham_put_page(file_dbp, pagep, 1);
} else if (!redo) {
ZERO_LSN(pagep->lsn);
ret = __ham_put_page(file_dbp, pagep, 1);
} else
ret = __ham_put_page(file_dbp, pagep, 0);
if (ret)
goto out;
}
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}
/*
* __ham_copypage_recover --
* Recovery function for copypage.
*
* PUBLIC: int __ham_copypage_recover
* PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
*/
int
__ham_copypage_recover(logp, dbtp, lsnp, redo, info)
DB_LOG *logp;
DBT *dbtp;
DB_LSN *lsnp;
int redo;
void *info;
{
__ham_copypage_args *argp;
DB *file_dbp, *mdbp;
DB_MPOOLFILE *mpf;
HTAB *hashp;
PAGE *pagep;
int cmp_n, cmp_p, getmeta, modified, ret;
getmeta = 0;
hashp = NULL; /* XXX: shut the compiler up. */
REC_PRINT(__ham_copypage_print);
REC_INTRO(__ham_copypage_read);
hashp = (HTAB *)file_dbp->internal;
GET_META(file_dbp, hashp);
getmeta = 1;
modified = 0;
/* This is the bucket page. */
ret = memp_fget(mpf, &argp->pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
ret = 0;
goto donext;
} else if ((ret = memp_fget(mpf, &argp->pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->pagelsn);
if (cmp_p == 0 && redo) {
/* Need to redo update described. */
memcpy(pagep, argp->page.data, argp->page.size);
LSN(pagep) = *lsnp;
modified = 1;
} else if (cmp_n == 0 && !redo) {
/* Need to undo update described. */
P_INIT(pagep, hashp->hdr->pagesize, argp->pgno, PGNO_INVALID,
argp->next_pgno, 0, P_HASH);
LSN(pagep) = argp->pagelsn;
modified = 1;
}
if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0)
goto out;
/* Now fix up the "next" page. */
donext: ret = memp_fget(mpf, &argp->next_pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
ret = 0;
goto do_nn;
} else if ((ret = memp_fget(mpf, &argp->next_pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
/* There is nothing to do in the REDO case; only UNDO. */
cmp_n = log_compare(lsnp, &LSN(pagep));
if (cmp_n == 0 && !redo) {
/* Need to undo update described. */
memcpy(pagep, argp->page.data, argp->page.size);
modified = 1;
}
if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0)
goto out;
/* Now fix up the next's next page. */
do_nn: if (argp->nnext_pgno == PGNO_INVALID) {
*lsnp = argp->prev_lsn;
goto out;
}
ret = memp_fget(mpf, &argp->nnext_pgno, 0, &pagep);
if (ret != 0)
if (!redo) {
/*
* We are undoing and the page doesn't exist. That
* is equivalent to having a pagelsn of 0, so we
* would not have to undo anything. In this case,
* don't bother creating a page.
*/
ret = 0;
*lsnp = argp->prev_lsn;
goto out;
} else if ((ret = memp_fget(mpf, &argp->nnext_pgno,
DB_MPOOL_CREATE, &pagep)) != 0)
goto out;
cmp_n = log_compare(lsnp, &LSN(pagep));
cmp_p = log_compare(&LSN(pagep), &argp->nnextlsn);
if (cmp_p == 0 && redo) {
/* Need to redo update described. */
PREV_PGNO(pagep) = argp->pgno;
LSN(pagep) = *lsnp;
modified = 1;
} else if (cmp_n == 0 && !redo) {
/* Need to undo update described. */
PREV_PGNO(pagep) = argp->next_pgno;
LSN(pagep) = argp->nnextlsn;
modified = 1;
}
if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0)
goto out;
*lsnp = argp->prev_lsn;
out: if (getmeta)
RELEASE_META(file_dbp, hashp);
REC_CLOSE;
}