summaryrefslogtreecommitdiff
path: root/db2/hash/hash_rec.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
committerUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
commit92f1da4da04a7a86ddee91be5eaf0b10c333ac64 (patch)
tree2a10ce9e4e407e7e5b5ca092ca0947d234b5ff60 /db2/hash/hash_rec.c
parent22be878ecbc66606371bd33258f56e6711e6ba7a (diff)
1997-08-10 19:17 Philip Blundell <Philip.Blundell@pobox.com> * nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>. Somebody should update this to use the new db API. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_db/db-alias.c: Likewise. * db2/Makefile: Makefile for db-2.x in glibc. 1997-08-27 21:20 Ulrich Drepper <drepper@cygnus.com> * csu/Makefile (before-compile): New goal. Make sure abi-tag.h is generated. [$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found. * Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add -D__USE_STRING_INLINES. * string/string.f: Move strnlen optimization after inclusion of <bits/string.h>. Include <bits/string.h> only if __USE_STRING_INLINES is defined. * sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name in <bits/string.h>. * sysdeps/generic/memset.c: Likewise. * sysdeps/i386/string.h: i386 optimized string functions. * sysdeps/i386/i486string.h: i486+ optimized string functions. * Makefile (subdirs): Change db to db2. * shlib-versions: Bump libdb verion number to 3. * include/db.h: Include from db2 directory. * include/db_185.h: New file. * sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros to provide spinlock information for db2. * sysdeps/m68k/m68020/Makefile: New file. Likewise. * sysdeps/sparc/Makefile: New file. Likewise. * sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS): Add -DHAVE_LLSEEK. * db2/config.h: Hand-edited config file for db2 in glibc. * db2/compat.h: New file from db-2.3.4. * db2/db.h: Likewise. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/makedb.c: Likewise. * db2/btree/bt_close.c: Likewise. * db2/btree/bt_compare.c: Likewise. * db2/btree/bt_conv.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/btree/bt_rsearch.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_err.c: Likewise. * db2/common/db_byteorder.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_salloc.c: Likewise. * db2/common/db_log2.c: Likewise. * db2/common/db_region.c: Likewise. * db2/common/db_shash.c: Likewise. * db2/db/db.c: Likewise. * db2/db/db.src: Likewise. * db2/db/db_conv.c: Likewise. * db2/db/db_dispatch.c: Likewise. * db2/db/db_dup.c: Likewise. * db2/db/db_overflow.c: Likewise. * db2/db/db_pr.c: Likewise. * db2/db/db_rec.c: Likewise. * db2/db/db_ret.c: Likewise. * db2/db/db_thread.c: Likewise. * db2/db/db_auto.c: Likewise. * db2/db185/db185.c: Likewise. * db2/db185/db185_int.h: Likewise. * db2/dbm/dbm.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash.src: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_conv.c: Likewise. * db2/hash/hash_debug.c: Likewise. * db2/hash/hash_stat.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_func.c: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/include/mp.h: Likewise. * db2/include/btree.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/db_shash.h: Likewise. * db2/include/db_swap.h: Likewise. * db2/include/db_185.h.src: Likewise. * db2/include/txn.h: Likewise. * db2/include/db_am.h: Likewise. * db2/include/shqueue.h: Likewise. * db2/include/hash.h: Likewise. * db2/include/db_dispatch.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/db_page.h: Likewise. * db2/include/log.h: Likewise. * db2/include/db_auto.h: Likewise. * db2/include/btree_auto.h: Likewise. * db2/include/hash_auto.h: Likewise. * db2/include/log_auto.h: Likewise. * db2/include/txn_auto.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/include/cxx_int.h: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/queue.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_conflict.c: Likewise. * db2/lock/lock_util.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log.src: Likewise. * db2/log/log_compare.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_register.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_findckp.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_fset.c: Likewise. * db2/mp/mp_open.c: Likewise. * db2/mp/mp_region.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/68020.gcc: Likewise. * db2/mutex/mutex.c: Likewise. * db2/mutex/README: Likewise. * db2/mutex/x86.gcc: Likewise. * db2/mutex/sparc.gcc: Likewise. * db2/mutex/uts4.cc.s: Likewise. * db2/mutex/alpha.dec: Likewise. * db2/mutex/alpha.gcc: Likewise. * db2/mutex/parisc.gcc: Likewise. * db2/mutex/parisc.hp: Likewise. * db2/os/db_os_abs.c: Likewise. * db2/os/db_os_dir.c: Likewise. * db2/os/db_os_fid.c: Likewise. * db2/os/db_os_lseek.c: Likewise. * db2/os/db_os_mmap.c: Likewise. * db2/os/db_os_open.c: Likewise. * db2/os/db_os_rw.c: Likewise. * db2/os/db_os_sleep.c: Likewise. * db2/os/db_os_stat.c: Likewise. * db2/os/db_os_unlink.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn.src: Likewise. * db2/txn/txn_rec.c: Likewise. * db2/txn/txn_auto.c: Likewise. * db2/clib/getlong.c: Likewise. * db2/progs/db_archive/db_archive.c: Likewise. * db2/progs/db_checkpoint/db_checkpoint.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump/db_dump.c: Likewise. * db2/progs/db_dump185/db_dump185.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. * libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline. * po/de.po, po/sv.po: Update from 2.0.5 translations. * sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print. * sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback as const. * sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const. * sunrpx/xdr_rec.c (xdrrec_destroy): Likewise. * sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise. 1997-08-27 18:47 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>. Reported by Benjamin Kosnik <bkoz@cygnus.com>. 1997-08-27 02:27 Roland McGrath <roland@baalperazim.frob.com> * abi-tags: New file. * csu/Makefile (distribute): Remove abi-tag.h. ($(objpfx)abi-tag.h): New target. * Makefile (distribute): Add abi-tags. * sysdeps/unix/sysv/linux/abi-tag.h: File removed. * sysdeps/mach/hurd/abi-tag.h: File removed. * sysdeps/stub/abi-tag.h: File removed. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/make-syscalls.sh: Change output so that it generates compilation rules only for the currently selected object suffixes. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous section to avoid confusing the compiler. * sysdeps/alpha/dl-machine.h (RTLD_START): Likewise. * sysdeps/i386/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT relocation instead of a constant to avoid text relocation. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (RTLD_START): Declare global labels as functions and add size directive. 1997-08-25 17:01 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/bits/select.h: Correct assembler versions to work even for descriptors >= 32. * stdlib/alloca.h: Don't define alloca to __alloca since if gcc is used __alloca is not defined to __builtin_alloca and so might not be available. Reported by Uwe Ohse <uwe@ohse.de>. * sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special way if gcc is not used and so dev_t is an array. Reported by Uwe Ohse <uwe@ohse.de>. 1997-08-23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/libc.texinfo: Reorder chapters to match logical order. 1997-08-25 12:22 Ulrich Drepper <drepper@cygnus.com> * sunrpc/rpc/xdr.h: Change name of parameters in prototypes of xdr_reference, xdrmem_create, and xdrstdio_create because of clash with g++ internal symbols. Patch by Sudish Joseph <sj@eng.mindspring.net>. * elf/dl-deps.c: Implement handling of DT_FILTER.
Diffstat (limited to 'db2/hash/hash_rec.c')
-rw-r--r--db2/hash/hash_rec.c810
1 files changed, 810 insertions, 0 deletions
diff --git a/db2/hash/hash_rec.c b/db2/hash/hash_rec.c
new file mode 100644
index 0000000000..81d9bb5ea8
--- /dev/null
+++ b/db2/hash/hash_rec.c
@@ -0,0 +1,810 @@
+/*-
+ * 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 10.12 (Sleepycat) 8/22/97";
+#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;
+ HKEYDATA *hk;
+ HTAB *hashp;
+ PAGE *pagep;
+ int32_t grow;
+ int change, cmp_n, cmp_p, getmeta, ret;
+
+ 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 = GET_HKEYDATA(pagep, argp->ndx);
+ if (redo)
+ hk->type = H_DUPLICATE;
+ else
+ hk->type = 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;
+ file_dbp = NULL;
+
+ 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->npages - 1] += 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->npages - 1] -= 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;
+}