X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=bfile%2Fbfile.c;h=681c0505f8f05b50da14536150b74d635fafef1e;hb=4cea1b9769079a2cdc143f4fe483e69d5b77a813;hp=5c0dec20603211b7888feb530b6997a84e9cfb9c;hpb=bceca936710690858ea162e7bc22de819f0e280f;p=idzebra-moved-to-github.git diff --git a/bfile/bfile.c b/bfile/bfile.c index 5c0dec2..681c050 100644 --- a/bfile/bfile.c +++ b/bfile/bfile.c @@ -1,94 +1,26 @@ -/* - * Copyright (C) 1994-1999, Index Data - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: bfile.c,v $ - * Revision 1.28 1999-05-12 13:08:05 adam - * First version of ISAMS. - * - * Revision 1.27 1999/02/02 14:50:01 adam - * Updated WIN32 code specific sections. Changed header. - * - * Revision 1.26 1998/02/17 10:32:52 adam - * Fixed bug: binary files weren't opened with flag b on NT. - * - * Revision 1.25 1997/10/27 14:25:38 adam - * Fixed memory leaks. - * - * Revision 1.24 1997/09/18 08:59:16 adam - * Extra generic handle for the character mapping routines. - * - * Revision 1.23 1997/09/17 12:19:06 adam - * Zebra version corresponds to YAZ version 1.4. - * Changed Zebra server so that it doesn't depend on global common_resource. - * - * Revision 1.22 1997/09/09 13:37:52 adam - * Partial port to WIN95/NT. - * - * Revision 1.21 1996/10/29 13:56:13 adam - * Include of zebrautl.h instead of alexutil.h. - * - * Revision 1.20 1996/03/26 15:59:04 adam - * The directory of the shadow table file can be specified by the new - * bf_lockDir call. - * - * Revision 1.19 1996/02/05 12:28:58 adam - * Removed a LOG_LOG message. - * - * Revision 1.18 1996/01/02 08:59:06 quinn - * Changed "commit" setting to "shadow". - * - * Revision 1.17 1995/12/11 09:03:51 adam - * New function: cf_unlink. - * New member of commit file head: state (0) deleted, (1) hash file. - * - * Revision 1.16 1995/12/08 16:21:13 adam - * Work on commit/update. - * - * Revision 1.15 1995/12/01 16:24:28 adam - * Commit files use separate meta file area. - * - * Revision 1.14 1995/12/01 11:37:21 adam - * Cached/commit files implemented as meta-files. - * - * Revision 1.13 1995/11/30 17:00:49 adam - * Several bug fixes. Commit system runs now. - * - * Revision 1.12 1995/11/30 08:33:10 adam - * Started work on commit facility. - * - * Revision 1.11 1995/09/04 12:33:21 adam - * Various cleanup. YAZ util used instead. - * - * Revision 1.10 1994/08/25 10:15:54 quinn - * Trivial - * - * Revision 1.9 1994/08/24 08:45:48 quinn - * Using mfile. - * - * Revision 1.8 1994/08/23 15:03:34 quinn - * *** empty log message *** - * - * Revision 1.7 1994/08/23 14:25:45 quinn - * Added O_CREAT because some geek wanted it. Sheesh. - * - * Revision 1.6 1994/08/23 14:21:38 quinn - * Fixed call to log - * - * Revision 1.5 1994/08/18 08:10:08 quinn - * Minimal changes - * - * Revision 1.4 1994/08/17 14:27:32 quinn - * last mods - * - * Revision 1.2 1994/08/17 14:09:32 quinn - * Compiles cleanly (still only dummy). - * - * Revision 1.1 1994/08/17 13:55:08 quinn - * New blocksystem. dummy only - * - */ +/* $Id: bfile.c,v 1.36 2004-08-04 08:35:22 adam Exp $ + Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002 + Index Data Aps + +This file is part of the Zebra server. + +Zebra is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Zebra is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with Zebra; see the file LICENSE.zebra. If not, write to the +Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. +*/ + + #include #include @@ -102,26 +34,39 @@ #include #include + #include "cfile.h" struct BFiles_struct { MFile_area commit_area; MFile_area_struct *register_area; - char *lockDir; + char *base; + char *cache_fname; }; -BFiles bfs_create (const char *spec) +BFiles bfs_create (const char *spec, const char *base) { - BFiles bfs = xmalloc (sizeof(*bfs)); + BFiles bfs = (BFiles) xmalloc (sizeof(*bfs)); bfs->commit_area = NULL; - bfs->register_area = mf_init("register", spec); - bfs->lockDir = NULL; + bfs->base = 0; + bfs->cache_fname = 0; + if (base) + bfs->base = xstrdup (base); + bfs->register_area = mf_init("register", spec, base); + if (!bfs->register_area) + { + bfs_destroy(bfs); + return 0; + } return bfs; } void bfs_destroy (BFiles bfs) { - xfree (bfs->lockDir); + if (!bfs) + return; + xfree (bfs->cache_fname); + xfree (bfs->base); mf_destroy (bfs->commit_area); mf_destroy (bfs->register_area); xfree (bfs); @@ -129,45 +74,32 @@ void bfs_destroy (BFiles bfs) static FILE *open_cache (BFiles bfs, const char *flags) { - char cacheFilename[1024]; FILE *file; - sprintf (cacheFilename, "%scache", - bfs->lockDir ? bfs->lockDir : ""); - file = fopen (cacheFilename, flags); + file = fopen (bfs->cache_fname, flags); return file; } static void unlink_cache (BFiles bfs) { - char cacheFilename[1024]; - - sprintf (cacheFilename, "%scache", - bfs->lockDir ? bfs->lockDir : ""); - unlink (cacheFilename); -} - -void bf_lockDir (BFiles bfs, const char *lockDir) -{ - size_t len; - - xfree (bfs->lockDir); - if (lockDir == NULL) - lockDir = ""; - len = strlen(lockDir); - bfs->lockDir = xmalloc (len+2); - strcpy (bfs->lockDir, lockDir); - - if (len > 0 && bfs->lockDir[len-1] != '/') - strcpy (bfs->lockDir + len, "/"); + unlink (bfs->cache_fname); } void bf_cache (BFiles bfs, const char *spec) { if (spec) { + yaz_log (LOG_LOG, "enabling cache spec=%s", spec); if (!bfs->commit_area) - bfs->commit_area = mf_init ("shadow", spec); + bfs->commit_area = mf_init ("shadow", spec, bfs->base); + if (bfs->commit_area) + { + bfs->cache_fname = xmalloc (strlen(bfs->commit_area->dirs->name)+ + 8); + strcpy (bfs->cache_fname, bfs->commit_area->dirs->name); + strcat (bfs->cache_fname, "/cache"); + yaz_log (LOG_LOG, "cache_fname = %s", bfs->cache_fname); + } } else bfs->commit_area = NULL; @@ -175,6 +107,7 @@ void bf_cache (BFiles bfs, const char *spec) int bf_close (BFile bf) { + zebra_lock_rdwr_destroy (&bf->rdwr_lock); if (bf->cf) cf_close (bf->cf); mf_close (bf->mf); @@ -184,7 +117,7 @@ int bf_close (BFile bf) BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag) { - BFile tmp = xmalloc(sizeof(BFile_struct)); + BFile tmp = (BFile) xmalloc(sizeof(BFile_struct)); if (bfs->commit_area) { @@ -200,8 +133,7 @@ BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag) outf = open_cache (bfs, "ab"); if (!outf) { - logf (LOG_FATAL|LOG_ERRNO, "open %scache", - bfs->lockDir ? bfs->lockDir : ""); + logf (LOG_FATAL|LOG_ERRNO, "open %s", bfs->cache_fname); exit (1); } fprintf (outf, "%s %d\n", name, block_size); @@ -219,23 +151,36 @@ BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag) xfree (tmp); return 0; } + zebra_lock_rdwr_init (&tmp->rdwr_lock); return(tmp); } -int bf_read (BFile bf, int no, int offset, int nbytes, void *buf) +int bf_read (BFile bf, zint no, int offset, int nbytes, void *buf) { int r; - if (bf->cf && (r=cf_read (bf->cf, no, offset, nbytes, buf)) != -1) - return r; - return mf_read (bf->mf, no, offset, nbytes, buf); + zebra_lock_rdwr_rlock (&bf->rdwr_lock); + if (bf->cf) + { + if ((r = cf_read (bf->cf, no, offset, nbytes, buf)) == -1) + r = mf_read (bf->mf, no, offset, nbytes, buf); + } + else + r = mf_read (bf->mf, no, offset, nbytes, buf); + zebra_lock_rdwr_runlock (&bf->rdwr_lock); + return r; } -int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf) +int bf_write (BFile bf, zint no, int offset, int nbytes, const void *buf) { + int r; + zebra_lock_rdwr_wlock (&bf->rdwr_lock); if (bf->cf) - return cf_write (bf->cf, no, offset, nbytes, buf); - return mf_write (bf->mf, no, offset, nbytes, buf); + r = cf_write (bf->cf, no, offset, nbytes, buf); + else + r = mf_write (bf->mf, no, offset, nbytes, buf); + zebra_lock_rdwr_wunlock (&bf->rdwr_lock); + return r; } int bf_commitExists (BFiles bfs) @@ -251,6 +196,14 @@ int bf_commitExists (BFiles bfs) return 0; } +void bf_reset (BFiles bfs) +{ + if (!bfs) + return; + mf_reset (bfs->commit_area); + mf_reset (bfs->register_area); +} + void bf_commitExec (BFiles bfs) { FILE *inf;