diff options
author | Ulrich Drepper <drepper@redhat.com> | 1997-08-27 20:26:10 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-08-27 20:26:10 +0000 |
commit | 92f1da4da04a7a86ddee91be5eaf0b10c333ac64 (patch) | |
tree | 2a10ce9e4e407e7e5b5ca092ca0947d234b5ff60 /db2/db/db_dispatch.c | |
parent | 22be878ecbc66606371bd33258f56e6711e6ba7a (diff) | |
download | glibc-92f1da4da04a7a86ddee91be5eaf0b10c333ac64.tar.gz glibc-92f1da4da04a7a86ddee91be5eaf0b10c333ac64.tar.xz glibc-92f1da4da04a7a86ddee91be5eaf0b10c333ac64.zip |
Update. cvs/libc-ud-970827
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/db/db_dispatch.c')
-rw-r--r-- | db2/db/db_dispatch.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/db2/db/db_dispatch.c b/db2/db/db_dispatch.c new file mode 100644 index 0000000000..3d7b162d75 --- /dev/null +++ b/db2/db/db_dispatch.c @@ -0,0 +1,270 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1996, 1997 + * Sleepycat Software. 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[] = "@(#)db_dispatch.c 10.5 (Sleepycat) 7/2/97"; +#endif /* not lint */ + +#ifndef NO_SYSTEM_INCLUDES +#include <sys/types.h> + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdlib.h> +#include <string.h> +#endif + +#include "db_int.h" +#include "db_page.h" +#include "db_dispatch.h" +#include "db_am.h" +#include "common_ext.h" + +/* + * Data structures to manage the DB dispatch table. The dispatch table + * is a dynamically allocated array of pointers to dispatch functions. + * The dispatch_size is the number of entries possible in the current + * dispatch table and the dispatch_valid is the number of valid entries + * in the dispatch table. + */ +static int (**dispatch_table) __P((DB_LOG *, DBT *, DB_LSN *, int, void *)); +static u_int32_t dispatch_size = 0; + +/* + * __db_dispatch -- + * + * This is the transaction dispatch function used by the db access methods. + * It is designed to handle the record format used by all the access + * methods (the one automatically generated by the db_{h,log,read}.sh + * scripts in the tools directory). An application using a different + * recovery paradigm will supply a different dispatch function to txn_open. + * + * PUBLIC: int __db_dispatch __P((DB_LOG *, DBT *, DB_LSN *, int, void *)); + */ +int +__db_dispatch(logp, db, lsnp, redo, info) + DB_LOG *logp; /* The log file. */ + DBT *db; /* The log record upon which to dispatch. */ + DB_LSN *lsnp; /* The lsn of the record being dispatched. */ + int redo; /* Redo this op (or undo it). */ + void *info; +{ + u_int32_t rectype, txnid; + + memcpy(&rectype, db->data, sizeof(rectype)); + memcpy(&txnid, (u_int8_t *)db->data + sizeof(rectype), sizeof(txnid)); + + switch (redo) { + case TXN_REDO: + case TXN_UNDO: + return ((dispatch_table[rectype])(logp, db, lsnp, redo, info)); + case TXN_OPENFILES: + if (rectype < DB_txn_BEGIN ) + return ((dispatch_table[rectype])(logp, + db, lsnp, redo, info)); + break; + case TXN_BACKWARD_ROLL: + /* + * Running full recovery in the backward pass. If we've + * seen this txnid before and added to it our commit list, + * then we do nothing during this pass. If we've never + * seen it, then we call the appropriate recovery routine + * in "abort mode". + */ + if (__db_txnlist_find(info, txnid) == DB_NOTFOUND) + return ((dispatch_table[rectype])(logp, + db, lsnp, TXN_UNDO, info)); + break; + case TXN_FORWARD_ROLL: + /* + * In the forward pass, if we haven't seen the transaction, + * do nothing, else recovery it. + */ + if (__db_txnlist_find(info, txnid) != DB_NOTFOUND) + return ((dispatch_table[rectype])(logp, + db, lsnp, TXN_REDO, info)); + break; + default: + abort(); + } + return (0); +} + +/* + * __db_add_recovery -- + * + * PUBLIC: int __db_add_recovery __P((DB_ENV *, + * PUBLIC: int (*)(DB_LOG *, DBT *, DB_LSN *, int, void *), u_int32_t)); + */ +int +__db_add_recovery(dbenv, func, ndx) + DB_ENV *dbenv; + int (*func) __P((DB_LOG *, DBT *, DB_LSN *, int, void *)); + u_int32_t ndx; +{ + u_int32_t i; + + /* Check if function is already registered. */ + if (dispatch_table && ndx < dispatch_size && + dispatch_table[ndx] != 0 && dispatch_table[ndx] != func) + return (DB_REGISTERED); + + /* Check if we have to grow the table. */ + if (ndx >= dispatch_size) { + if (dispatch_table == NULL) + dispatch_table = (int (**) + __P((DB_LOG *, DBT *, DB_LSN *, int, void *))) + malloc(DB_user_BEGIN * sizeof(dispatch_table[0])); + else + dispatch_table = (int (**) + __P((DB_LOG *, DBT *, DB_LSN *, int, void *))) + realloc(dispatch_table, (DB_user_BEGIN + + dispatch_size) * sizeof(dispatch_table[0])); + if (dispatch_table == NULL) { + __db_err(dbenv, "%s", strerror(ENOMEM)); + return (ENOMEM); + } + for (i = dispatch_size, + dispatch_size += DB_user_BEGIN; i < dispatch_size; ++i) + dispatch_table[i] = NULL; + } + + dispatch_table[ndx] = func; + return (0); +} + +/* + * __db_txnlist_init -- + * Initialize transaction linked list. + * + * PUBLIC: int __db_txnlist_init __P((void *)); + */ +int +__db_txnlist_init(retp) + void *retp; +{ + __db_txnhead *headp; + + if ((headp = + (struct __db_txnhead *)malloc(sizeof(struct __db_txnhead))) == NULL) + return (ENOMEM); + + LIST_INIT(&headp->head); + headp->maxid = 0; + + *(void **)retp = headp; + return (0); +} + +/* + * __db_txnlist_add -- + * Add an element to our transaction linked list. + * + * PUBLIC: int __db_txnlist_add __P((void *, u_int32_t)); + */ +int +__db_txnlist_add(listp, txnid) + void *listp; + u_int32_t txnid; +{ + __db_txnhead *hp; + __db_txnlist *elp; + + if ((elp = (__db_txnlist *)malloc(sizeof(__db_txnlist))) == NULL) + return (ENOMEM); + + elp->txnid = txnid; + hp = (struct __db_txnhead *)listp; + LIST_INSERT_HEAD(&hp->head, elp, links); + if (txnid > hp->maxid) + hp->maxid = txnid; + + return (0); +} + +/* + * __db_txnlist_find -- + * Checks to see if txnid is in the txnid list, returns 1 if found, + * 0 if not found. + * + * PUBLIC: int __db_txnlist_find __P((void *, u_int32_t)); + */ +int +__db_txnlist_find(listp, txnid) + void *listp; + u_int32_t txnid; +{ + __db_txnlist *p; + __db_txnhead *hp; + + if ((hp = (struct __db_txnhead *)listp) == NULL) + return (DB_NOTFOUND); + + if (hp->maxid < txnid) { + hp->maxid = txnid; + return (DB_NOTFOUND); + } + + for (p = hp->head.lh_first; p != NULL; p = p->links.le_next) + if (p->txnid == txnid) + return (0); + + return (DB_NOTFOUND); +} + +#ifdef DEBUG +void +__db_txnlist_print(listp) + void *listp; +{ + __db_txnlist *p; + __db_txnhead *hp; + + hp = (struct __db_txnhead *)listp; + printf("Maxid: %lu\n", (u_long)hp->maxid); + for (p = hp->head.lh_first; p != NULL; p = p->links.le_next) + printf("TXNID: %lu\n", (u_long)p->txnid); +} +#endif |