2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.33 2002-04-04 14:14:13 adam
8 * Multiple registers (alpha early)
10 * Revision 1.32 2000/03/15 15:00:30 adam
11 * First work on threaded version.
13 * Revision 1.31 1999/12/08 15:03:11 adam
14 * Implemented bf_reset.
16 * Revision 1.30 1999/10/14 14:33:49 adam
17 * Added truncation 5=106.
19 * Revision 1.29 1999/05/26 07:49:12 adam
22 * Revision 1.28 1999/05/12 13:08:05 adam
23 * First version of ISAMS.
25 * Revision 1.27 1999/02/02 14:50:01 adam
26 * Updated WIN32 code specific sections. Changed header.
28 * Revision 1.26 1998/02/17 10:32:52 adam
29 * Fixed bug: binary files weren't opened with flag b on NT.
31 * Revision 1.25 1997/10/27 14:25:38 adam
34 * Revision 1.24 1997/09/18 08:59:16 adam
35 * Extra generic handle for the character mapping routines.
37 * Revision 1.23 1997/09/17 12:19:06 adam
38 * Zebra version corresponds to YAZ version 1.4.
39 * Changed Zebra server so that it doesn't depend on global common_resource.
41 * Revision 1.22 1997/09/09 13:37:52 adam
42 * Partial port to WIN95/NT.
44 * Revision 1.21 1996/10/29 13:56:13 adam
45 * Include of zebrautl.h instead of alexutil.h.
47 * Revision 1.20 1996/03/26 15:59:04 adam
48 * The directory of the shadow table file can be specified by the new
51 * Revision 1.19 1996/02/05 12:28:58 adam
52 * Removed a LOG_LOG message.
54 * Revision 1.18 1996/01/02 08:59:06 quinn
55 * Changed "commit" setting to "shadow".
57 * Revision 1.17 1995/12/11 09:03:51 adam
58 * New function: cf_unlink.
59 * New member of commit file head: state (0) deleted, (1) hash file.
61 * Revision 1.16 1995/12/08 16:21:13 adam
62 * Work on commit/update.
64 * Revision 1.15 1995/12/01 16:24:28 adam
65 * Commit files use separate meta file area.
67 * Revision 1.14 1995/12/01 11:37:21 adam
68 * Cached/commit files implemented as meta-files.
70 * Revision 1.13 1995/11/30 17:00:49 adam
71 * Several bug fixes. Commit system runs now.
73 * Revision 1.12 1995/11/30 08:33:10 adam
74 * Started work on commit facility.
76 * Revision 1.11 1995/09/04 12:33:21 adam
77 * Various cleanup. YAZ util used instead.
79 * Revision 1.10 1994/08/25 10:15:54 quinn
82 * Revision 1.9 1994/08/24 08:45:48 quinn
85 * Revision 1.8 1994/08/23 15:03:34 quinn
86 * *** empty log message ***
88 * Revision 1.7 1994/08/23 14:25:45 quinn
89 * Added O_CREAT because some geek wanted it. Sheesh.
91 * Revision 1.6 1994/08/23 14:21:38 quinn
94 * Revision 1.5 1994/08/18 08:10:08 quinn
97 * Revision 1.4 1994/08/17 14:27:32 quinn
100 * Revision 1.2 1994/08/17 14:09:32 quinn
101 * Compiles cleanly (still only dummy).
103 * Revision 1.1 1994/08/17 13:55:08 quinn
104 * New blocksystem. dummy only
118 #include <zebrautl.h>
122 struct BFiles_struct {
123 MFile_area commit_area;
124 MFile_area_struct *register_area;
129 BFiles bfs_create (const char *spec, const char *base)
131 BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
132 bfs->commit_area = NULL;
134 bfs->cache_fname = 0;
136 bfs->base = xstrdup (base);
137 bfs->register_area = mf_init("register", spec, base);
138 if (!bfs->register_area)
146 void bfs_destroy (BFiles bfs)
148 xfree (bfs->cache_fname);
150 mf_destroy (bfs->commit_area);
151 mf_destroy (bfs->register_area);
155 static FILE *open_cache (BFiles bfs, const char *flags)
159 file = fopen (bfs->cache_fname, flags);
163 static void unlink_cache (BFiles bfs)
165 unlink (bfs->cache_fname);
168 void bf_cache (BFiles bfs, const char *spec)
172 yaz_log (LOG_LOG, "enabling cache spec=%s", spec);
173 if (!bfs->commit_area)
174 bfs->commit_area = mf_init ("shadow", spec, bfs->base);
175 if (bfs->commit_area)
177 bfs->cache_fname = xmalloc (strlen(bfs->commit_area->dirs->name)+
179 strcpy (bfs->cache_fname, bfs->commit_area->dirs->name);
180 strcat (bfs->cache_fname, "/cache");
181 yaz_log (LOG_LOG, "cache_fname = %s", bfs->cache_fname);
185 bfs->commit_area = NULL;
188 int bf_close (BFile bf)
190 zebra_lock_rdwr_destroy (&bf->rdwr_lock);
198 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
200 BFile tmp = (BFile) xmalloc(sizeof(BFile_struct));
202 if (bfs->commit_area)
206 tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
207 tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
213 outf = open_cache (bfs, "ab");
216 logf (LOG_FATAL|LOG_ERRNO, "open %s", bfs->cache_fname);
219 fprintf (outf, "%s %d\n", name, block_size);
225 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
230 logf (LOG_FATAL, "mf_open failed for %s", name);
234 zebra_lock_rdwr_init (&tmp->rdwr_lock);
238 int bf_read (BFile bf, int no, int offset, int nbytes, void *buf)
242 zebra_lock_rdwr_rlock (&bf->rdwr_lock);
245 if ((r = cf_read (bf->cf, no, offset, nbytes, buf)) == -1)
246 r = mf_read (bf->mf, no, offset, nbytes, buf);
249 r = mf_read (bf->mf, no, offset, nbytes, buf);
250 zebra_lock_rdwr_runlock (&bf->rdwr_lock);
254 int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf)
257 zebra_lock_rdwr_wlock (&bf->rdwr_lock);
259 r = cf_write (bf->cf, no, offset, nbytes, buf);
261 r = mf_write (bf->mf, no, offset, nbytes, buf);
262 zebra_lock_rdwr_wunlock (&bf->rdwr_lock);
266 int bf_commitExists (BFiles bfs)
270 inf = open_cache (bfs, "rb");
279 void bf_reset (BFiles bfs)
281 mf_reset (bfs->commit_area);
282 mf_reset (bfs->register_area);
285 void bf_commitExec (BFiles bfs)
294 assert (bfs->commit_area);
295 if (!(inf = open_cache (bfs, "rb")))
297 logf (LOG_LOG, "No commit file");
300 while (fscanf (inf, "%s %d", path, &block_size) == 2)
302 mf = mf_open (bfs->register_area, path, block_size, 1);
303 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
313 void bf_commitClean (BFiles bfs, const char *spec)
323 if (!bfs->commit_area)
325 bf_cache (bfs, spec);
329 if (!(inf = open_cache (bfs, "rb")))
331 while (fscanf (inf, "%s %d", path, &block_size) == 2)
333 mf = mf_open (bfs->register_area, path, block_size, 0);
334 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);