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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/btree/bt_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/btree/bt_rec.c')
-rw-r--r--db2/btree/bt_rec.c767
1 files changed, 767 insertions, 0 deletions
diff --git a/db2/btree/bt_rec.c b/db2/btree/bt_rec.c
new file mode 100644
index 0000000000..d4bc7f6824
--- /dev/null
+++ b/db2/btree/bt_rec.c
@@ -0,0 +1,767 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ * Sleepycat Software. All rights reserved.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)bt_rec.c 10.11 (Sleepycat) 8/22/97";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#endif
+
+#include "db_int.h"
+#include "db_page.h"
+#include "shqueue.h"
+#include "hash.h"
+#include "btree.h"
+#include "log.h"
+#include "db_dispatch.h"
+#include "common_ext.h"
+
+/*
+ * __bam_pg_alloc_recover --
+ * Recovery function for pg_alloc.
+ *
+ * PUBLIC: int __bam_pg_alloc_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_pg_alloc_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_pg_alloc_args *argp;
+ BTMETA *meta;
+ DB_MPOOLFILE *mpf;
+ PAGE *pagep;
+ DB *file_dbp, *mdbp;
+ db_pgno_t pgno;
+ int cmp_n, cmp_p, created, modified, ret;
+
+ REC_PRINT(__bam_pg_alloc_print);
+ REC_INTRO(__bam_pg_alloc_read);
+
+ /*
+ * Fix up the allocated page. If we're redoing the operation, we have
+ * to get the page (creating it if it doesn't exist), and update its
+ * LSN. If we're undoing the operation, we have to reset the page's
+ * LSN and put it on the free list.
+ *
+ * Fix up the metadata page. If we're redoing the operation, we have
+ * to get the metadata page and update its LSN and its free pointer.
+ * If we're undoing the operation and the page was ever created, we put
+ * it on the freelist.
+ */
+ pgno = PGNO_METADATA;
+ if ((ret = memp_fget(mpf, &pgno, 0, &meta)) != 0) {
+ (void)__db_pgerr(file_dbp, pgno);
+ goto out;
+ }
+ if ((ret = memp_fget(mpf, &argp->pgno, DB_MPOOL_CREATE, &pagep)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->pgno);
+ (void)memp_fput(mpf, meta, 0);
+ goto out;
+ }
+
+ /* Fix up the allocated page. */
+ created = IS_ZERO_LSN(LSN(pagep));
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &argp->page_lsn);
+ if ((created || cmp_p == 0) && redo) {
+ /* Need to redo update described. */
+ P_INIT(pagep, file_dbp->pgsize,
+ argp->pgno, PGNO_INVALID, PGNO_INVALID, 0, argp->ptype);
+
+ pagep->lsn = *lsnp;
+ modified = 1;
+ } else if ((created || cmp_n == 0) && !redo) {
+ /* Need to undo update described. */
+ P_INIT(pagep, file_dbp->pgsize,
+ argp->pgno, PGNO_INVALID, meta->free, 0, P_INVALID);
+
+ pagep->lsn = argp->page_lsn;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+ (void)__db_panic(file_dbp);
+ (void)memp_fput(mpf, meta, 0);
+ goto out;
+ }
+
+ /* Fix up the metadata page. */
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(meta));
+ cmp_p = log_compare(&LSN(meta), &argp->meta_lsn);
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ meta->lsn = *lsnp;
+ meta->free = argp->next;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ meta->lsn = argp->meta_lsn;
+ meta->free = argp->pgno;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, meta, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+ (void)__db_panic(file_dbp);
+ goto out;
+ }
+
+ *lsnp = argp->prev_lsn;
+ ret = 0;
+
+out: REC_CLOSE;
+}
+
+/*
+ * __bam_pg_free_recover --
+ * Recovery function for pg_free.
+ *
+ * PUBLIC: int __bam_pg_free_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_pg_free_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_pg_free_args *argp;
+ BTMETA *meta;
+ DB *file_dbp, *mdbp;
+ DB_MPOOLFILE *mpf;
+ PAGE *pagep;
+ db_pgno_t pgno;
+ int cmp_n, cmp_p, modified, ret;
+
+ REC_PRINT(__bam_pg_free_print);
+ REC_INTRO(__bam_pg_free_read);
+
+ /*
+ * Fix up the freed page. If we're redoing the operation we get the
+ * page and explicitly discard its contents, then update its LSN. If
+ * we're undoing the operation, we get the page and restore its header.
+ */
+ if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->pgno);
+ goto out;
+ }
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &LSN(argp->header.data));
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ P_INIT(pagep, file_dbp->pgsize,
+ pagep->pgno, PGNO_INVALID, argp->next, 0, P_INVALID);
+ pagep->lsn = *lsnp;
+
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ memcpy(pagep, argp->header.data, argp->header.size);
+
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+ (void)__db_panic(file_dbp);
+ goto out;
+ }
+
+ /*
+ * Fix up the metadata page. If we're redoing or undoing the operation
+ * we get the page and update its LSN and free pointer.
+ */
+ pgno = PGNO_METADATA;
+ if ((ret = memp_fget(mpf, &pgno, 0, &meta)) != 0) {
+ (void)__db_pgerr(file_dbp, pgno);
+ goto out;
+ }
+
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(meta));
+ cmp_p = log_compare(&LSN(meta), &argp->meta_lsn);
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ meta->free = argp->pgno;
+
+ meta->lsn = *lsnp;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ meta->free = argp->next;
+
+ meta->lsn = argp->meta_lsn;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, meta, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+ (void)__db_panic(file_dbp);
+ goto out;
+ }
+
+ *lsnp = argp->prev_lsn;
+ ret = 0;
+
+out: REC_CLOSE;
+}
+
+/*
+ * __bam_split_recover --
+ * Recovery function for split.
+ *
+ * PUBLIC: int __bam_split_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_split_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_split_args *argp;
+ DB *file_dbp, *mdbp;
+ DB_MPOOLFILE *mpf;
+ PAGE *_lp, *lp, *np, *pp, *_rp, *rp, *sp;
+ db_pgno_t pgno;
+ int l_update, p_update, r_update, ret, rootsplit, t_ret;
+
+ REC_PRINT(__bam_split_print);
+
+ mpf = NULL;
+ _lp = lp = np = pp = _rp = rp = NULL;
+
+ REC_INTRO(__bam_split_read);
+
+ /*
+ * There are two kinds of splits that we have to recover from. The
+ * first is a root-page split, where the root page is split from a
+ * leaf page into an internal page and two new leaf pages are created.
+ * The second is where a page is split into two pages, and a new key
+ * is inserted into the parent page.
+ */
+ sp = argp->pg.data;
+ pgno = PGNO(sp);
+ rootsplit = pgno == PGNO_ROOT;
+ if (memp_fget(mpf, &argp->left, 0, &lp) != 0)
+ lp = NULL;
+ if (memp_fget(mpf, &argp->right, 0, &rp) != 0)
+ rp = NULL;
+
+ if (redo) {
+ l_update = r_update = p_update = 0;
+ /*
+ * Decide if we need to resplit the page.
+ *
+ * If this is a root split, then the root has to exist, it's
+ * the page we're splitting and it gets modified. If this is
+ * not a root split, then the left page has to exist, for the
+ * same reason.
+ */
+ if (rootsplit) {
+ if ((ret = memp_fget(mpf, &pgno, 0, &pp)) != 0) {
+ (void)__db_pgerr(file_dbp, pgno);
+ pp = NULL;
+ goto out;
+ }
+ p_update =
+ log_compare(&LSN(pp), &LSN(argp->pg.data)) == 0;
+ } else
+ if (lp == NULL) {
+ (void)__db_pgerr(file_dbp, argp->left);
+ goto out;
+ }
+ if (lp == NULL || log_compare(&LSN(lp), &argp->llsn) == 0)
+ l_update = 1;
+ if (rp == NULL || log_compare(&LSN(rp), &argp->rlsn) == 0)
+ r_update = 1;
+ if (!p_update && !l_update && !r_update)
+ goto done;
+
+ /* Allocate and initialize new left/right child pages. */
+ if ((_lp = (PAGE *)malloc(file_dbp->pgsize)) == NULL)
+ goto nomem;
+ if ((_rp = (PAGE *)malloc(file_dbp->pgsize)) == NULL) {
+nomem: errno = ENOMEM;
+ __db_err(file_dbp->dbenv, "%s", strerror(errno));
+ goto out;
+ }
+ if (rootsplit) {
+ P_INIT(_lp, file_dbp->pgsize, argp->left,
+ PGNO_INVALID,
+ ISINTERNAL(sp) ? PGNO_INVALID : argp->right,
+ LEVEL(sp), TYPE(sp));
+ P_INIT(_rp, file_dbp->pgsize, argp->right,
+ ISINTERNAL(sp) ? PGNO_INVALID : argp->left,
+ PGNO_INVALID, LEVEL(sp), TYPE(sp));
+ } else {
+ P_INIT(_lp, file_dbp->pgsize, PGNO(sp),
+ ISINTERNAL(sp) ? PGNO_INVALID : PREV_PGNO(sp),
+ ISINTERNAL(sp) ? PGNO_INVALID : argp->right,
+ LEVEL(sp), TYPE(sp));
+ P_INIT(_rp, file_dbp->pgsize, argp->right,
+ ISINTERNAL(sp) ? PGNO_INVALID : sp->pgno,
+ ISINTERNAL(sp) ? PGNO_INVALID : NEXT_PGNO(sp),
+ LEVEL(sp), TYPE(sp));
+ }
+
+ /* Split the page. */
+ if ((ret = __bam_copy(file_dbp, sp, _lp, 0, argp->indx)) != 0 ||
+ (ret = __bam_copy(file_dbp, sp, _rp, argp->indx,
+ NUM_ENT(sp))) != 0)
+ goto out;
+
+ /* If the left child is wrong, update it. */
+ if (lp == NULL && (ret =
+ memp_fget(mpf, &argp->left, DB_MPOOL_CREATE, &lp)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->left);
+ lp = NULL;
+ goto out;
+ }
+ if (l_update) {
+ memcpy(lp, _lp, file_dbp->pgsize);
+ lp->lsn = *lsnp;
+ if ((ret = memp_fput(mpf, lp, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ lp = NULL;
+ }
+
+ /* If the right child is wrong, update it. */
+ if (rp == NULL && (ret = memp_fget(mpf,
+ &argp->right, DB_MPOOL_CREATE, &rp)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->right);
+ rp = NULL;
+ goto out;
+ }
+ if (r_update) {
+ memcpy(rp, _rp, file_dbp->pgsize);
+ rp->lsn = *lsnp;
+ if ((ret = memp_fput(mpf, rp, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ rp = NULL;
+ }
+
+ /*
+ * If the parent page is wrong, update it. This is of interest
+ * only if it was a root split, since root splits create parent
+ * pages. All other splits modify a parent page, but those are
+ * separately logged and recovered.
+ */
+ if (rootsplit && p_update) {
+ if (file_dbp->type == DB_BTREE)
+ P_INIT(pp, file_dbp->pgsize,
+ PGNO_ROOT, PGNO_INVALID, PGNO_INVALID,
+ _lp->level + 1, P_IBTREE);
+ else
+ P_INIT(pp, file_dbp->pgsize,
+ PGNO_ROOT, PGNO_INVALID, PGNO_INVALID,
+ _lp->level + 1, P_IRECNO);
+ RE_NREC_SET(pp,
+ file_dbp->type == DB_RECNO ||
+ F_ISSET(file_dbp, DB_BT_RECNUM) ?
+ __bam_total(_lp) + __bam_total(_rp) : 0);
+ pp->lsn = *lsnp;
+ if ((ret = memp_fput(mpf, pp, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ pp = NULL;
+ }
+
+ /*
+ * Finally, redo the next-page link if necessary. This is of
+ * interest only if it wasn't a root split -- inserting a new
+ * page in the tree requires that any following page have its
+ * previous-page pointer updated to our new page. The next
+ * page had better exist.
+ */
+ if (!rootsplit && !IS_ZERO_LSN(argp->nlsn)) {
+ if ((ret = memp_fget(mpf, &argp->npgno, 0, &np)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->npgno);
+ np = NULL;
+ goto out;
+ }
+ if (log_compare(&LSN(np), &argp->nlsn) == 0) {
+ PREV_PGNO(np) = argp->right;
+ np->lsn = *lsnp;
+ if ((ret = memp_fput(mpf,
+ np, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ np = NULL;
+ }
+ }
+ } else {
+ /*
+ * If the split page is wrong, replace its contents with the
+ * logged page contents. The split page had better exist.
+ */
+ if ((ret = memp_fget(mpf, &pgno, 0, &pp)) != 0) {
+ (void)__db_pgerr(file_dbp, pgno);
+ pp = NULL;
+ goto out;
+ }
+ if (log_compare(lsnp, &LSN(pp)) == 0) {
+ memcpy(pp, argp->pg.data, argp->pg.size);
+ if ((ret = memp_fput(mpf, pp, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ pp = NULL;
+ }
+
+ /*
+ * If it's a root split and the left child ever existed, put
+ * it on the free list. (If it's not a root split, we just
+ * updated the left page -- it's the same as the split page.)
+ * If the right child ever existed, root split or not, put it
+ * on the free list.
+ */
+ if ((rootsplit && lp != NULL) || rp != NULL) {
+ if (rootsplit && lp != NULL &&
+ log_compare(lsnp, &LSN(lp)) == 0) {
+ lp->lsn = argp->llsn;
+ if ((ret =
+ memp_fput(mpf, lp, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ lp = NULL;
+ }
+ if (rp != NULL &&
+ log_compare(lsnp, &LSN(rp)) == 0) {
+ rp->lsn = argp->rlsn;
+ if ((ret =
+ memp_fput(mpf, rp, DB_MPOOL_DIRTY)) != 0)
+ goto fatal;
+ rp = NULL;
+ }
+ }
+
+ /*
+ * Finally, undo the next-page link if necessary. This is of
+ * interest only if it wasn't a root split -- inserting a new
+ * page in the tree requires that any following page have its
+ * previous-page pointer updated to our new page. The next
+ * page had better exist.
+ */
+ if (!rootsplit && !IS_ZERO_LSN(argp->nlsn)) {
+ if ((ret = memp_fget(mpf, &argp->npgno, 0, &np)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->npgno);
+ np = NULL;
+ goto out;
+ }
+ if (log_compare(lsnp, &LSN(np)) == 0) {
+ PREV_PGNO(np) = argp->left;
+ np->lsn = argp->nlsn;
+ if (memp_fput(mpf, np, DB_MPOOL_DIRTY))
+ goto fatal;
+ np = NULL;
+ }
+ }
+ }
+
+done: ret = 0;
+ *lsnp = argp->prev_lsn;
+
+ if (0) {
+fatal: (void)__db_panic(file_dbp);
+ }
+out: /* Free any pages that weren't dirtied. */
+ if (pp != NULL && (t_ret = memp_fput(mpf, pp, 0)) != 0 && ret == 0)
+ ret = t_ret;
+ if (lp != NULL && (t_ret = memp_fput(mpf, lp, 0)) != 0 && ret == 0)
+ ret = t_ret;
+ if (np != NULL && (t_ret = memp_fput(mpf, np, 0)) != 0 && ret == 0)
+ ret = t_ret;
+ if (rp != NULL && (t_ret = memp_fput(mpf, rp, 0)) != 0 && ret == 0)
+ ret = t_ret;
+
+ /* Free any allocated space. */
+ if (_lp != NULL)
+ free(_lp);
+ if (_rp != NULL)
+ free(_rp);
+
+ REC_CLOSE;
+}
+
+/*
+ * __bam_rsplit_recover --
+ * Recovery function for a reverse split.
+ *
+ * PUBLIC: int __bam_rsplit_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_rsplit_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_rsplit_args *argp;
+ DB *file_dbp, *mdbp;
+ DB_MPOOLFILE *mpf;
+ PAGE *pagep;
+ db_pgno_t pgno;
+ int cmp_n, cmp_p, modified, ret;
+
+ REC_PRINT(__bam_rsplit_print);
+ REC_INTRO(__bam_rsplit_read);
+
+ /* Fix the root page. */
+ pgno = PGNO_ROOT;
+ if ((ret = memp_fget(mpf, &pgno, 0, &pagep)) != 0) {
+ __db_pgerr(file_dbp, pgno);
+ pagep = NULL;
+ goto out;
+ }
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &argp->rootlsn);
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ memcpy(pagep, argp->pgdbt.data, argp->pgdbt.size);
+ pagep->pgno = PGNO_ROOT;
+ pagep->lsn = *lsnp;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ P_INIT(pagep, file_dbp->pgsize, PGNO_ROOT,
+ PGNO_INVALID, PGNO_INVALID, pagep->level + 1, TYPE(pagep));
+ if ((ret = __db_pitem(file_dbp, pagep, 0,
+ argp->rootent.size, &argp->rootent, NULL)) != 0)
+ goto out;
+ pagep->lsn = argp->rootlsn;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+ (void)__db_panic(file_dbp);
+ goto out;
+ }
+
+ /* Fix the page copied over the root page. */
+ if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->pgno);
+ pagep = NULL;
+ goto out;
+ }
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &LSN(argp->pgdbt.data));
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ pagep->lsn = *lsnp;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ memcpy(pagep, argp->pgdbt.data, argp->pgdbt.size);
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) != 0) {
+ (void)__db_panic(file_dbp);
+ goto out;
+ }
+
+ ret = 0;
+ *lsnp = argp->prev_lsn;
+
+out: REC_CLOSE;
+}
+
+/*
+ * __bam_adj_recover --
+ * Recovery function for adj.
+ *
+ * PUBLIC: int __bam_adj_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_adj_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_adj_args *argp;
+ DB *file_dbp, *mdbp;
+ DB_MPOOLFILE *mpf;
+ PAGE *pagep;
+ int cmp_n, cmp_p, modified, ret;
+
+ REC_PRINT(__bam_adj_print);
+ REC_INTRO(__bam_adj_read);
+
+ if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->pgno);
+ pagep = NULL;
+ goto out;
+ }
+
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &argp->lsn);
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ if ((ret = __bam_adjindx(file_dbp,
+ pagep, argp->indx, argp->indx_copy, argp->is_insert)) != 0)
+ goto err;
+
+ LSN(pagep) = *lsnp;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ if ((ret = __bam_adjindx(file_dbp,
+ pagep, argp->indx, argp->indx_copy, !argp->is_insert)) != 0)
+ goto err;
+
+ LSN(pagep) = argp->lsn;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) == 0)
+ *lsnp = argp->prev_lsn;
+
+ if (0) {
+err: (void)memp_fput(mpf, pagep, 0);
+ }
+out: REC_CLOSE;
+}
+
+/*
+ * __bam_cadjust_recover --
+ * Recovery function for the adjust of a count change in an internal
+ * page.
+ *
+ * PUBLIC: int __bam_cadjust_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_cadjust_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_cadjust_args *argp;
+ DB *file_dbp, *mdbp;
+ DB_MPOOLFILE *mpf;
+ PAGE *pagep;
+ int cmp_n, cmp_p, modified, ret;
+
+ REC_PRINT(__bam_cadjust_print);
+ REC_INTRO(__bam_cadjust_read);
+
+ if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+ errno = __db_pgerr(file_dbp, argp->pgno);
+ pagep = NULL;
+ goto out;
+ }
+
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &argp->lsn);
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ if (file_dbp->type == DB_BTREE &&
+ F_ISSET(file_dbp, DB_BT_RECNUM)) {
+ GET_BINTERNAL(pagep, argp->indx)->nrecs += argp->adjust;
+ if (argp->total && PGNO(pagep) == PGNO_ROOT)
+ RE_NREC_ADJ(pagep, argp->adjust);
+ }
+ if (file_dbp->type == DB_RECNO) {
+ GET_RINTERNAL(pagep, argp->indx)->nrecs += argp->adjust;
+ if (argp->total && PGNO(pagep) == PGNO_ROOT)
+ RE_NREC_ADJ(pagep, argp->adjust);
+ }
+
+ LSN(pagep) = *lsnp;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ if (file_dbp->type == DB_BTREE &&
+ F_ISSET(file_dbp, DB_BT_RECNUM)) {
+ GET_BINTERNAL(pagep, argp->indx)->nrecs -= argp->adjust;
+ if (argp->total && PGNO(pagep) == PGNO_ROOT)
+ RE_NREC_ADJ(pagep, argp->adjust);
+ }
+ if (file_dbp->type == DB_RECNO) {
+ GET_RINTERNAL(pagep, argp->indx)->nrecs -= argp->adjust;
+ if (argp->total && PGNO(pagep) == PGNO_ROOT)
+ RE_NREC_ADJ(pagep, -(argp->adjust));
+ }
+ LSN(pagep) = argp->lsn;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) == 0)
+ *lsnp = argp->prev_lsn;
+
+out: REC_CLOSE;
+}
+
+/*
+ * __bam_cdel_recover --
+ * Recovery function for the intent-to-delete of a cursor record.
+ *
+ * PUBLIC: int __bam_cdel_recover
+ * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
+ */
+int
+__bam_cdel_recover(logp, dbtp, lsnp, redo, info)
+ DB_LOG *logp;
+ DBT *dbtp;
+ DB_LSN *lsnp;
+ int redo;
+ void *info;
+{
+ __bam_cdel_args *argp;
+ DB *file_dbp, *mdbp;
+ DB_MPOOLFILE *mpf;
+ PAGE *pagep;
+ int cmp_n, cmp_p, modified, ret;
+
+ REC_PRINT(__bam_cdel_print);
+ REC_INTRO(__bam_cdel_read);
+
+ if ((ret = memp_fget(mpf, &argp->pgno, 0, &pagep)) != 0) {
+ (void)__db_pgerr(file_dbp, argp->pgno);
+ pagep = NULL;
+ goto out;
+ }
+
+ modified = 0;
+ cmp_n = log_compare(lsnp, &LSN(pagep));
+ cmp_p = log_compare(&LSN(pagep), &argp->lsn);
+ if (cmp_p == 0 && redo) {
+ /* Need to redo update described. */
+ GET_BKEYDATA(pagep, argp->indx + O_INDX)->deleted = 1;
+
+ LSN(pagep) = *lsnp;
+ modified = 1;
+ } else if (cmp_n == 0 && !redo) {
+ /* Need to undo update described. */
+ GET_BKEYDATA(pagep, argp->indx + O_INDX)->deleted = 0;
+
+ LSN(pagep) = argp->lsn;
+ modified = 1;
+ }
+ if ((ret = memp_fput(mpf, pagep, modified ? DB_MPOOL_DIRTY : 0)) == 0)
+ *lsnp = argp->prev_lsn;
+
+out: REC_CLOSE;
+}