2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.16 1996-04-09 10:05:20 adam
8 * Bug fix: prev_name buffer possibly too small; allocated in key_file_init.
10 * Revision 1.15 1996/03/21 14:50:09 adam
11 * File update uses modify-time instead of change-time.
13 * Revision 1.14 1996/02/07 14:06:37 adam
14 * Better progress report during register merge.
15 * New command: clean - removes temporary shadow files.
17 * Revision 1.13 1996/02/05 12:30:00 adam
18 * Logging reduced a bit.
19 * The remaining running time is estimated during register merge.
21 * Revision 1.12 1995/12/06 17:49:19 adam
22 * Uses dict_delete now.
24 * Revision 1.11 1995/12/06 16:06:43 adam
25 * Better diagnostics. Work on 'real' dictionary deletion.
27 * Revision 1.10 1995/12/06 12:41:22 adam
28 * New command 'stat' for the index program.
29 * Filenames can be read from stdin by specifying '-'.
30 * Bug fix/enhancement of the transformation from terms to regular
31 * expressons in the search engine.
33 * Revision 1.9 1995/10/10 12:24:39 adam
34 * Temporary sort files are compressed.
36 * Revision 1.8 1995/10/04 16:57:19 adam
37 * Key input and merge sort in one pass.
39 * Revision 1.7 1995/10/02 15:18:52 adam
40 * New member in recRetrieveCtrl: diagnostic.
42 * Revision 1.6 1995/09/29 15:51:56 adam
43 * First work on multi-way read.
45 * Revision 1.5 1995/09/29 14:01:43 adam
48 * Revision 1.4 1995/09/28 14:22:57 adam
49 * Sort uses smaller temporary files.
51 * Revision 1.3 1995/09/06 16:11:17 adam
52 * Option: only one word key per file.
54 * Revision 1.2 1995/09/04 12:33:42 adam
55 * Various cleanup. YAZ util used instead.
57 * Revision 1.1 1995/09/04 09:10:37 adam
58 * More work on index add/del/update.
59 * Merge sort implemented.
60 * Initial work on z39 server.
74 #define KEY_SIZE (1+sizeof(struct it_key))
75 #define INP_NAME_MAX 8192
76 #define INP_BUF_START 60000
77 #define INP_BUF_ADD 400000
79 static int no_diffs = 0;
80 static int no_updates = 0;
81 static int no_deletions = 0;
82 static int no_insertions = 0;
83 static int no_iterations = 0;
87 off_t offset; /* file offset */
88 unsigned char *buf; /* buffer block */
89 size_t buf_size; /* number of read bytes in block */
90 size_t chunk; /* number of bytes allocated */
91 size_t buf_ptr; /* current position in buffer */
92 char *prev_name; /* last word read */
93 int sysno; /* last sysno */
94 int seqno; /* last seqno */
95 off_t length; /* length of file */
96 /* handler invoked in each read */
97 void (*readHandler)(struct key_file *keyp, void *rinfo);
101 void getFnameTmp (char *fname, int no)
103 sprintf (fname, TEMP_FNAME, no);
106 void key_file_chunk_read (struct key_file *f)
110 getFnameTmp (fname, f->no);
111 fd = open (fname, O_RDONLY);
114 logf (LOG_FATAL|LOG_ERRNO, "cannot open %s", fname);
119 if ((f->length = lseek (fd, 0L, SEEK_END)) == (off_t) -1)
121 logf (LOG_FATAL|LOG_ERRNO, "cannot seek %s", fname);
125 if (lseek (fd, f->offset, SEEK_SET) == -1)
127 logf (LOG_FATAL|LOG_ERRNO, "cannot seek %s", fname);
130 while (f->chunk - nr > 0)
132 r = read (fd, f->buf + nr, f->chunk - nr);
139 logf (LOG_FATAL|LOG_ERRNO, "read of %s", fname);
145 (*f->readHandler)(f, f->readInfo);
149 struct key_file *key_file_init (int no, int chunk)
153 f = xmalloc (sizeof(*f));
160 f->readHandler = NULL;
161 f->buf = xmalloc (f->chunk);
162 f->prev_name = xmalloc (512);
163 *f->prev_name = '\0';
164 key_file_chunk_read (f);
168 int key_file_getc (struct key_file *f)
170 if (f->buf_ptr < f->buf_size)
171 return f->buf[(f->buf_ptr)++];
172 if (f->buf_size < f->chunk)
174 f->offset += f->buf_size;
175 key_file_chunk_read (f);
176 if (f->buf_ptr < f->buf_size)
177 return f->buf[(f->buf_ptr)++];
182 int key_file_decode (struct key_file *f)
186 c = key_file_getc (f);
193 d = ((c&63) << 8) + (key_file_getc (f) & 0xff);
196 d = ((c&63) << 8) + (key_file_getc (f) & 0xff);
197 d = (d << 8) + (key_file_getc (f) & 0xff);
200 d = ((c&63) << 8) + (key_file_getc (f) & 0xff);
201 d = (d << 8) + (key_file_getc (f) & 0xff);
202 d = (d << 8) + (key_file_getc (f) & 0xff);
208 int key_file_read (struct key_file *f, char *key)
213 c = key_file_getc (f);
216 strcpy (key, f->prev_name);
225 while ((key[i++] = key_file_getc (f)))
227 strcpy (f->prev_name, key);
230 d = key_file_decode (f);
233 itkey.sysno = d + f->sysno;
236 f->sysno = itkey.sysno;
239 d = key_file_decode (f);
240 itkey.seqno = d + f->seqno;
241 f->seqno = itkey.seqno;
242 memcpy (key + i, &itkey, sizeof(struct it_key));
243 return i + sizeof (struct it_key);
248 struct key_file **file;
253 int (*cmp)(const void *p1, const void *p2);
256 struct heap_info *key_heap_init (int nkeys,
257 int (*cmp)(const void *p1, const void *p2))
259 struct heap_info *hi;
262 hi = xmalloc (sizeof(*hi));
263 hi->info.file = xmalloc (sizeof(*hi->info.file) * (1+nkeys));
264 hi->info.buf = xmalloc (sizeof(*hi->info.buf) * (1+nkeys));
266 hi->ptr = xmalloc (sizeof(*hi->ptr) * (1+nkeys));
268 for (i = 0; i<= nkeys; i++)
271 hi->info.buf[i] = xmalloc (768);
276 static void key_heap_swap (struct heap_info *hi, int i1, int i2)
281 hi->ptr[i1] = hi->ptr[i2];
286 static void key_heap_delete (struct heap_info *hi)
288 int cur = 1, child = 2;
290 assert (hi->heapnum > 0);
292 key_heap_swap (hi, 1, hi->heapnum);
294 while (child <= hi->heapnum) {
295 if (child < hi->heapnum &&
296 (*hi->cmp)(&hi->info.buf[hi->ptr[child]],
297 &hi->info.buf[hi->ptr[child+1]]) > 0)
299 if ((*hi->cmp)(&hi->info.buf[hi->ptr[cur]],
300 &hi->info.buf[hi->ptr[child]]) > 0)
302 key_heap_swap (hi, cur, child);
311 static void key_heap_insert (struct heap_info *hi, const char *buf, int nbytes,
316 cur = ++(hi->heapnum);
317 memcpy (hi->info.buf[hi->ptr[cur]], buf, nbytes);
318 hi->info.file[hi->ptr[cur]] = kf;
321 while (parent && (*hi->cmp)(&hi->info.buf[hi->ptr[parent]],
322 &hi->info.buf[hi->ptr[cur]]) > 0)
324 key_heap_swap (hi, cur, parent);
330 static int heap_read_one (struct heap_info *hi, char *name, char *key)
339 strcpy (name, hi->info.buf[n]);
340 kf = hi->info.file[n];
342 memcpy (key, hi->info.buf[n] + r+1, KEY_SIZE);
343 key_heap_delete (hi);
344 if ((r = key_file_read (kf, rbuf)))
345 key_heap_insert (hi, rbuf, r, kf);
350 int heap_inp (Dict dict, ISAM isam, struct heap_info *hi)
353 char next_name[INP_NAME_MAX+1];
354 char cur_name[INP_NAME_MAX+1];
355 int key_buf_size = INP_BUF_START;
361 next_key = xmalloc (KEY_SIZE);
362 key_buf = xmalloc (key_buf_size * (KEY_SIZE));
363 more = heap_read_one (hi, cur_name, key_buf);
364 while (more) /* EOF ? */
367 key_buf_ptr = KEY_SIZE;
370 if (!(more = heap_read_one (hi, next_name, next_key)))
372 if (*next_name && strcmp (next_name, cur_name))
374 memcpy (key_buf + key_buf_ptr, next_key, KEY_SIZE);
375 key_buf_ptr += KEY_SIZE;
376 if (key_buf_ptr+KEY_SIZE >= key_buf_size)
379 new_key_buf = xmalloc (key_buf_size + INP_BUF_ADD);
380 memcpy (new_key_buf, key_buf, key_buf_size);
381 key_buf_size += INP_BUF_ADD;
383 key_buf = new_key_buf;
387 nmemb = key_buf_ptr / KEY_SIZE;
388 assert (nmemb*KEY_SIZE == key_buf_ptr);
389 if ((info = dict_lookup (dict, cur_name)))
391 ISAM_P isam_p, isam_p2;
392 logf (LOG_DEBUG, "updating %s", cur_name);
393 memcpy (&isam_p, info+1, sizeof(ISAM_P));
394 isam_p2 = is_merge (isam, isam_p, nmemb, key_buf);
398 if (!dict_delete (dict, cur_name))
404 if (isam_p2 != isam_p)
405 dict_insert (dict, cur_name, sizeof(ISAM_P), &isam_p2);
411 logf (LOG_DEBUG, "inserting %s", cur_name);
413 isam_p = is_merge (isam, 0, nmemb, key_buf);
414 dict_insert (dict, cur_name, sizeof(ISAM_P), &isam_p);
416 memcpy (key_buf, next_key, KEY_SIZE);
417 strcpy (cur_name, next_name);
422 struct progressInfo {
429 void progressFunc (struct key_file *keyp, void *info)
431 struct progressInfo *p = info;
432 time_t now, remaining;
434 if (keyp->buf_size <= 0 || p->totalBytes <= 0)
438 if (now >= p->lastTime+10)
441 remaining = (now - p->startTime)*
442 ((double) p->totalBytes/p->totalOffset - 1.0);
443 if (remaining <= 130)
444 logf (LOG_LOG, "Merge %2.1f%% completed; %ld seconds remaining",
445 (100.0*p->totalOffset) / p->totalBytes, (long) remaining);
447 logf (LOG_LOG, "Merge %2.1f%% completed; %ld minutes remaining",
448 (100.0*p->totalOffset) / p->totalBytes, (long) remaining/60);
450 p->totalOffset += keyp->buf_size;
453 void key_input (const char *dict_fname, const char *isam_fname,
454 int nkeys, int cache)
459 struct key_file **kf;
462 struct heap_info *hi;
463 struct progressInfo progressInfo;
471 getFnameTmp (fname, nkeys+1);
472 if (access (fname, R_OK) == -1)
479 dict = dict_open (dict_fname, cache, 1);
482 logf (LOG_FATAL, "dict_open fail of `%s'", dict_fname);
485 isam = is_open (isam_fname, key_compare, 1, sizeof(struct it_key));
488 logf (LOG_FATAL, "is_open fail of `%s'", isam_fname);
492 kf = xmalloc ((1+nkeys) * sizeof(*kf));
493 progressInfo.totalBytes = 0;
494 progressInfo.totalOffset = 0;
495 time (&progressInfo.startTime);
496 time (&progressInfo.lastTime);
497 for (i = 1; i<=nkeys; i++)
499 kf[i] = key_file_init (i, 32768);
500 kf[i]->readHandler = progressFunc;
501 kf[i]->readInfo = &progressInfo;
502 progressInfo.totalBytes += kf[i]->length;
503 progressInfo.totalOffset += kf[i]->buf_size;
505 hi = key_heap_init (nkeys, key_qsort_compare);
506 for (i = 1; i<=nkeys; i++)
507 if ((r = key_file_read (kf[i], rbuf)))
508 key_heap_insert (hi, rbuf, r, kf[i]);
509 heap_inp (dict, isam, hi);
514 for (i = 1; i<=nkeys; i++)
516 getFnameTmp (rbuf, i);
519 logf (LOG_LOG, "Iterations . . .%7d", no_iterations);
520 logf (LOG_LOG, "Distinct words .%7d", no_diffs);
521 logf (LOG_LOG, "Updates. . . . .%7d", no_updates);
522 logf (LOG_LOG, "Deletions. . . .%7d", no_deletions);
523 logf (LOG_LOG, "Insertions . . .%7d", no_insertions);