X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=bfile%2Fbfile.c;h=2d9234133bdcbbd88cae08f2fb9ed96da0b7309c;hp=a160f132f527d4b67c9125ba42f84a05f7aa6004;hb=2b1851bd5565e3d21f9cf9a37661a584c063b75f;hpb=805db1945539e97bd09b17d91eefc8eeb1652213 diff --git a/bfile/bfile.c b/bfile/bfile.c index a160f13..2d92341 100644 --- a/bfile/bfile.c +++ b/bfile/bfile.c @@ -1,10 +1,57 @@ /* - * Copyright (C) 1994, Index Data I/S + * Copyright (C) 1994-1999, Index Data * All rights reserved. * Sebastian Hammer, Adam Dickmeiss * * $Log: bfile.c,v $ - * Revision 1.18 1996-01-02 08:59:06 quinn + * Revision 1.33 2002-04-04 14:14:13 adam + * Multiple registers (alpha early) + * + * Revision 1.32 2000/03/15 15:00:30 adam + * First work on threaded version. + * + * Revision 1.31 1999/12/08 15:03:11 adam + * Implemented bf_reset. + * + * Revision 1.30 1999/10/14 14:33:49 adam + * Added truncation 5=106. + * + * Revision 1.29 1999/05/26 07:49:12 adam + * C++ compilation. + * + * 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 @@ -60,35 +107,87 @@ #include #include +#include #include +#ifdef WIN32 +#include +#else #include +#endif -#include +#include #include #include "cfile.h" -static MFile_area commit_area = NULL; +struct BFiles_struct { + MFile_area commit_area; + MFile_area_struct *register_area; + char *base; + char *cache_fname; +}; -void bf_cache (int enableFlag) +BFiles bfs_create (const char *spec, const char *base) { - if (enableFlag) + BFiles bfs = (BFiles) xmalloc (sizeof(*bfs)); + bfs->commit_area = 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) { - if (!commit_area) - if (res_get (common_resource, "shadow")) - commit_area = mf_init ("shadow"); - else - { - logf (LOG_FATAL, "Shadow area must be defined if commit" - "is to be enabled"); - exit (1); - } + bfs_destroy(bfs); + return 0; + } + return bfs; +} + +void bfs_destroy (BFiles bfs) +{ + xfree (bfs->cache_fname); + xfree (bfs->base); + mf_destroy (bfs->commit_area); + mf_destroy (bfs->register_area); + xfree (bfs); +} + +static FILE *open_cache (BFiles bfs, const char *flags) +{ + FILE *file; + + file = fopen (bfs->cache_fname, flags); + return file; +} + +static void unlink_cache (BFiles bfs) +{ + 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->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 - commit_area = NULL; + bfs->commit_area = NULL; } int bf_close (BFile bf) { + zebra_lock_rdwr_destroy (&bf->rdwr_lock); if (bf->cf) cf_close (bf->cf); mf_close (bf->mf); @@ -96,30 +195,34 @@ int bf_close (BFile bf) return 0; } -BFile bf_open (const char *name, int block_size, int wflag) +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 (commit_area) + if (bfs->commit_area) { - FILE *outf; int first_time; - logf (LOG_LOG, "cf,mf_open %s", name); - - tmp->mf = mf_open (0, name, block_size, 0); - tmp->cf = cf_open (tmp->mf, commit_area, name, block_size, + tmp->mf = mf_open (bfs->register_area, name, block_size, 0); + tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size, wflag, &first_time); if (first_time) { - outf = fopen ("cache", "a"); + FILE *outf; + + outf = open_cache (bfs, "ab"); + if (!outf) + { + logf (LOG_FATAL|LOG_ERRNO, "open %s", bfs->cache_fname); + exit (1); + } fprintf (outf, "%s %d\n", name, block_size); fclose (outf); } } else { - tmp->mf = mf_open(0, name, block_size, wflag); + tmp->mf = mf_open(bfs->register_area, name, block_size, wflag); tmp->cf = NULL; } if (!tmp->mf) @@ -128,30 +231,43 @@ BFile bf_open (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 num, void *buf) +int bf_read (BFile bf, int no, int offset, int nbytes, void *buf) { int r; - if (bf->cf && (r=cf_read (bf->cf, no, offset, num, buf)) != -1) - return r; - return mf_read (bf->mf, no, offset, num, 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 num, const void *buf) +int bf_write (BFile bf, int 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, num, buf); - return mf_write (bf->mf, no, offset, num, 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 (void) +int bf_commitExists (BFiles bfs) { FILE *inf; - inf = fopen ("cache", "r"); + inf = open_cache (bfs, "rb"); if (inf) { fclose (inf); @@ -160,7 +276,13 @@ int bf_commitExists (void) return 0; } -void bf_commitExec (void) +void bf_reset (BFiles bfs) +{ + mf_reset (bfs->commit_area); + mf_reset (bfs->register_area); +} + +void bf_commitExec (BFiles bfs) { FILE *inf; int block_size; @@ -169,16 +291,16 @@ void bf_commitExec (void) CFile cf; int first_time; - assert (commit_area); - if (!(inf = fopen ("cache", "r"))) + assert (bfs->commit_area); + if (!(inf = open_cache (bfs, "rb"))) { logf (LOG_LOG, "No commit file"); return ; } while (fscanf (inf, "%s %d", path, &block_size) == 2) { - mf = mf_open (0, path, block_size, 1); - cf = cf_open (mf, commit_area, path, block_size, 0, &first_time); + mf = mf_open (bfs->register_area, path, block_size, 1); + cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time); cf_commit (cf); @@ -188,7 +310,7 @@ void bf_commitExec (void) fclose (inf); } -void bf_commitClean (void) +void bf_commitClean (BFiles bfs, const char *spec) { FILE *inf; int block_size; @@ -198,24 +320,24 @@ void bf_commitClean (void) int mustDisable = 0; int firstTime; - if (!commit_area) + if (!bfs->commit_area) { - bf_cache (1); + bf_cache (bfs, spec); mustDisable = 1; } - if (!(inf = fopen ("cache", "r"))) + if (!(inf = open_cache (bfs, "rb"))) return ; while (fscanf (inf, "%s %d", path, &block_size) == 2) { - mf = mf_open (0, path, block_size, 0); - cf = cf_open (mf, commit_area, path, block_size, 1, &firstTime); + mf = mf_open (bfs->register_area, path, block_size, 0); + cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime); cf_unlink (cf); cf_close (cf); mf_close (mf); } fclose (inf); - unlink ("cache"); + unlink_cache (bfs); if (mustDisable) - bf_cache (0); + bf_cache (bfs, 0); }