2 * Copyright (C) 1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.9 1996-04-12 07:01:57 adam
8 * Yet another bug fix (next_block was initialized to 0; now set to 1).
10 * Revision 1.8 1996/02/07 14:03:49 adam
11 * Work on flat indexed shadow files.
13 * Revision 1.7 1996/02/07 10:08:46 adam
14 * Work on flat shadow (not finished yet).
16 * Revision 1.6 1995/12/15 12:36:53 adam
17 * Moved hash file information to union.
18 * Renamed commit files.
20 * Revision 1.5 1995/12/12 15:57:55 adam
21 * Implemented mf_unlink. cf_unlink uses mf_unlink.
23 * Revision 1.4 1995/12/11 09:03:55 adam
24 * New function: cf_unlink.
25 * New member of commit file head: state (0) deleted, (1) hash file.
27 * Revision 1.3 1995/12/01 16:24:29 adam
28 * Commit files use separate meta file area.
30 * Revision 1.2 1995/12/01 11:37:24 adam
31 * Cached/commit files implemented as meta-files.
33 * Revision 1.1 1995/11/30 08:33:13 adam
34 * Started work on commit facility.
45 void cf_unlink (CFile cf)
47 if (cf->bucket_in_memory)
49 logf (LOG_FATAL, "Cannot unlink potential dirty cache");
54 mf_unlink (cf->block_mf);
55 mf_unlink (cf->hash_mf);
59 static void cf_commit_hash (CFile cf)
63 struct CFile_ph_bucket *p;
65 p = xmalloc (sizeof(*p));
66 hash_bytes = cf->head.hash_size * sizeof(int);
67 bucket_no = cf->head.first_bucket;
68 for (; bucket_no < cf->head.next_bucket; bucket_no++)
70 if (!mf_read (cf->hash_mf, bucket_no, 0, 0, p))
72 logf (LOG_FATAL, "read commit hash");
75 for (i = 0; i<HASH_BUCKET && p->vno[i]; i++)
77 if (!mf_read (cf->block_mf, p->vno[i], 0, 0, cf->iobuf))
79 logf (LOG_FATAL, "read commit block");
82 mf_write (cf->rmf, p->no[i], 0, 0, cf->iobuf);
88 static void cf_commit_flat (CFile cf)
94 fp = xmalloc (HASH_BSIZE);
95 for (hno = cf->head.next_bucket; hno < cf->head.flat_bucket; hno++)
97 if (hno == cf->head.next_bucket || hno == cf->head.flat_bucket-1)
99 for (i = 0; i < (HASH_BSIZE/sizeof(int)); i++)
102 if (!mf_read (cf->hash_mf, hno, 0, 0, fp))
104 logf (LOG_WARN, "read index block hno=%d (%d-%d) commit",
105 hno, cf->head.next_bucket,
106 cf->head.flat_bucket-1);
108 for (i = 0; i < (HASH_BSIZE/sizeof(int)); i++)
112 if (!mf_read (cf->block_mf, fp[i], 0, 0, cf->iobuf))
114 logf (LOG_FATAL, "read data block hno=%d (%d-%d) "
115 "i=%d commit block at %d (->%d)",
116 hno, cf->head.next_bucket, cf->head.flat_bucket-1,
120 mf_write (cf->rmf, vno, 0, 0, cf->iobuf);
128 void cf_commit (CFile cf)
131 if (cf->bucket_in_memory)
133 logf (LOG_FATAL, "Cannot commit potential dirty cache");
136 if (cf->head.state == 1)
138 else if (cf->head.state == 2)