1 |
< |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
1 |
> |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ SGI"; |
16 |
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#define CACHESIZE 16 /* default cache size (Mbytes, 0==inf) */ |
17 |
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#endif |
18 |
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#ifndef FREEBEAMS |
19 |
< |
#define FREEBEAMS 512 /* maximum beams to free at a time */ |
19 |
> |
#define FREEBEAMS 1500 /* maximum beams to free at a time */ |
20 |
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#endif |
21 |
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#ifndef PCTFREE |
22 |
< |
#define PCTFREE 20 /* maximum fraction to free (%) */ |
22 |
> |
#define PCTFREE 15 /* maximum fraction to free (%) */ |
23 |
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#endif |
24 |
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#ifndef MAXFRAG |
25 |
< |
#define MAXFRAG 131000 /* maximum fragments/file to track (0==inf) */ |
25 |
> |
#define MAXFRAG 32767 /* maximum fragments/file to track (0==inf) */ |
26 |
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#endif |
27 |
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|
28 |
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#ifndef BSD |
30 |
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#define read readbuf |
31 |
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#endif |
32 |
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|
33 |
< |
#define FRAGBLK 64 /* number of fragments to allocate at a time */ |
33 |
> |
#define FRAGBLK 256 /* number of fragments to allocate at a time */ |
34 |
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|
35 |
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unsigned hdcachesize = CACHESIZE*1024*1024; /* target cache size */ |
36 |
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unsigned long hdclock; /* clock value */ |
37 |
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|
38 |
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HOLO *hdlist[HDMAX+1]; /* holodeck pointers (NULL term.) */ |
39 |
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|
40 |
< |
static struct fragment { |
40 |
> |
static struct fraglist { |
41 |
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short nlinks; /* number of holodeck sections using us */ |
42 |
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short writerr; /* write error encountered */ |
43 |
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int nfrags; /* number of known fragments */ |
44 |
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BEAMI *fi; /* fragments, descending file position */ |
45 |
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long flen; /* last known file length */ |
46 |
< |
} *hdfrag; /* fragment lists, indexed by file descriptor */ |
46 |
> |
} *hdfragl; /* fragment lists, indexed by file descriptor */ |
47 |
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|
48 |
< |
static int nhdfrags; /* size of hdfrag array */ |
48 |
> |
static int nhdfragls; /* size of hdfragl array */ |
49 |
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|
50 |
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|
51 |
+ |
char * |
52 |
+ |
hdrealloc(ptr, siz, rout) /* (re)allocate memory, retry then error */ |
53 |
+ |
char *ptr; |
54 |
+ |
unsigned siz; |
55 |
+ |
char *rout; |
56 |
+ |
{ |
57 |
+ |
register char *newp; |
58 |
+ |
/* call malloc/realloc */ |
59 |
+ |
if (ptr == NULL) newp = (char *)malloc(siz); |
60 |
+ |
else newp = (char *)realloc(ptr, siz); |
61 |
+ |
/* check success */ |
62 |
+ |
if (newp == NULL && rout != NULL) { |
63 |
+ |
hdfreecache(25, NULL); /* free some memory */ |
64 |
+ |
errno = 0; /* retry */ |
65 |
+ |
newp = hdrealloc(ptr, siz, NULL); |
66 |
+ |
if (newp == NULL) { /* give up and report error */ |
67 |
+ |
sprintf(errmsg, "out of memory in %s", rout); |
68 |
+ |
error(SYSTEM, errmsg); |
69 |
+ |
} |
70 |
+ |
} |
71 |
+ |
return(newp); |
72 |
+ |
} |
73 |
+ |
|
74 |
+ |
|
75 |
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hdattach(fd) /* start tracking file fragments for some section */ |
76 |
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register int fd; |
77 |
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{ |
78 |
< |
if (fd >= nhdfrags) { |
79 |
< |
if (nhdfrags) |
80 |
< |
hdfrag = (struct fragment *)realloc((char *)hdfrag, |
81 |
< |
(fd+1)*sizeof(struct fragment)); |
82 |
< |
else |
83 |
< |
hdfrag = (struct fragment *)malloc( |
60 |
< |
(fd+1)*sizeof(struct fragment)); |
61 |
< |
if (hdfrag == NULL) |
62 |
< |
error(SYSTEM, "out of memory in hdattach"); |
63 |
< |
bzero((char *)(hdfrag+nhdfrags), |
64 |
< |
(fd+1-nhdfrags)*sizeof(struct fragment)); |
65 |
< |
nhdfrags = fd+1; |
78 |
> |
if (fd >= nhdfragls) { |
79 |
> |
hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, |
80 |
> |
(fd+1)*sizeof(struct fraglist), "hdattach"); |
81 |
> |
bzero((char *)(hdfragl+nhdfragls), |
82 |
> |
(fd+1-nhdfragls)*sizeof(struct fraglist)); |
83 |
> |
nhdfragls = fd+1; |
84 |
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} |
85 |
< |
hdfrag[fd].nlinks++; |
86 |
< |
hdfrag[fd].flen = lseek(fd, 0L, 2); /* get file length */ |
85 |
> |
hdfragl[fd].nlinks++; |
86 |
> |
hdfragl[fd].flen = lseek(fd, 0L, 2); /* get file length */ |
87 |
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} |
88 |
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|
89 |
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|
93 |
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hdrelease(fd) /* stop tracking file fragments for some section */ |
94 |
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register int fd; |
95 |
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{ |
96 |
< |
if (fd < 0 | fd >= nhdfrags || !hdfrag[fd].nlinks) |
96 |
> |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
97 |
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return; |
98 |
< |
if (!--hdfrag[fd].nlinks && hdfrag[fd].nfrags) { |
99 |
< |
free((char *)hdfrag[fd].fi); |
100 |
< |
hdfrag[fd].fi = NULL; |
101 |
< |
hdfrag[fd].nfrags = 0; |
98 |
> |
if (!--hdfragl[fd].nlinks && hdfragl[fd].nfrags) { |
99 |
> |
free((char *)hdfragl[fd].fi); |
100 |
> |
hdfragl[fd].fi = NULL; |
101 |
> |
hdfragl[fd].nfrags = 0; |
102 |
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} |
103 |
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} |
104 |
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|
123 |
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int fd; /* corresponding file descriptor */ |
124 |
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HDGRID *hproto; /* holodeck section grid */ |
125 |
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{ |
126 |
+ |
long rtrunc; |
127 |
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long fpos; |
128 |
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register HOLO *hp; |
129 |
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register int n; |
145 |
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error(SYSTEM, "failure loading holodeck directory"); |
146 |
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/* check that it's clean */ |
147 |
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if (hp->bi[nbeams(hp)].fo < 0) |
148 |
< |
error(USER, "dirty holodeck section"); |
148 |
> |
error(WARNING, "dirty holodeck section"); |
149 |
|
} else { /* assume we're creating it */ |
150 |
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if ((hp = hdalloc(hproto)) == NULL) |
151 |
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goto memerr; |
163 |
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hdattach(fd); |
164 |
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/* check rays on disk */ |
165 |
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fpos = hdfilen(fd); |
166 |
< |
biglob(hp)->nrd = 0; |
166 |
> |
biglob(hp)->nrd = rtrunc = 0; |
167 |
|
for (n = hproto == NULL ? nbeams(hp) : 0; n > 0; n--) |
168 |
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if (hp->bi[n].nrd) |
169 |
< |
if (hp->bi[n].fo + hp->bi[n].nrd > fpos) |
170 |
< |
hp->bi[n].nrd = 0; /* off end */ |
171 |
< |
else |
169 |
> |
if (hp->bi[n].fo+hp->bi[n].nrd*sizeof(RAYVAL) > fpos) { |
170 |
> |
rtrunc += hp->bi[n].nrd; |
171 |
> |
hp->bi[n].nrd = 0; |
172 |
> |
} else |
173 |
|
biglob(hp)->nrd += hp->bi[n].nrd; |
174 |
+ |
if (rtrunc) { |
175 |
+ |
sprintf(errmsg, "truncated section, %ld rays lost (%.1f%%)", |
176 |
+ |
rtrunc, 100.*rtrunc/(rtrunc+biglob(hp)->nrd)); |
177 |
+ |
error(WARNING, errmsg); |
178 |
+ |
} |
179 |
|
/* add to holodeck list */ |
180 |
|
for (n = 0; n < HDMAX; n++) |
181 |
|
if (hdlist[n] == NULL) { |
238 |
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} |
239 |
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} |
240 |
|
if (all) |
241 |
< |
for (j = 0; j < nhdfrags; j++) { |
242 |
< |
total += sizeof(struct fragment); |
243 |
< |
if (hdfrag[j].nfrags) |
241 |
> |
for (j = 0; j < nhdfragls; j++) { |
242 |
> |
total += sizeof(struct fraglist); |
243 |
> |
if (hdfragl[j].nfrags) |
244 |
|
total += FRAGBLK*sizeof(BEAMI) * |
245 |
< |
((hdfrag[j].nfrags-1)/FRAGBLK + 1) ; |
245 |
> |
((hdfragl[j].nfrags-1)/FRAGBLK + 1) ; |
246 |
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} |
247 |
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return(total); |
248 |
|
} |
256 |
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|
257 |
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if (fd < 0) |
258 |
|
return(-1); |
259 |
< |
if (fd >= nhdfrags || !hdfrag[fd].nlinks) { |
259 |
> |
if (fd >= nhdfragls || !hdfragl[fd].nlinks) { |
260 |
|
if ((fpos = lseek(fd, 0L, 1)) < 0) |
261 |
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return(-1); |
262 |
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flen = lseek(fd, 0L, 2); |
263 |
|
lseek(fd, fpos, 0); |
264 |
|
return(flen); |
265 |
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} |
266 |
< |
return(hdfrag[fd].flen); |
266 |
> |
return(hdfragl[fd].flen); |
267 |
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} |
268 |
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|
269 |
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|
310 |
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hp->bl[i]->tick = hdclock; /* preempt swap */ |
311 |
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if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) |
312 |
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hdfreecache(PCTFREE, NULL); /* free some space */ |
288 |
– |
errno = 0; |
313 |
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if (hp->bl[i] == NULL) { /* allocate (and load) */ |
314 |
|
n = hp->bi[i].nrd + nr; |
315 |
< |
if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) |
292 |
< |
goto memerr; |
315 |
> |
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdnewrays"); |
316 |
|
blglob(hp)->nrm += n; |
317 |
|
if (n = hp->bl[i]->nrm = hp->bi[i].nrd) { |
318 |
+ |
errno = 0; |
319 |
|
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
320 |
|
error(SYSTEM, "seek error on holodeck file"); |
321 |
|
n *= sizeof(RAYVAL); |
324 |
|
"error reading beam from holodeck file"); |
325 |
|
} |
326 |
|
} else { /* just grow in memory */ |
327 |
< |
hp->bl[i] = (BEAM *)realloc( (char *)hp->bl[i], |
328 |
< |
hdbsiz(hp->bl[i]->nrm + nr) ); |
305 |
< |
if (hp->bl[i] == NULL) |
306 |
< |
goto memerr; |
327 |
> |
hp->bl[i] = (BEAM *)hdrealloc((char *)hp->bl[i], |
328 |
> |
hdbsiz(hp->bl[i]->nrm + nr), "hdnewrays"); |
329 |
|
blglob(hp)->nrm += nr; |
330 |
|
} |
331 |
|
p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
332 |
|
hp->bl[i]->nrm += nr; /* update in-core structure */ |
333 |
|
bzero((char *)p, nr*sizeof(RAYVAL)); |
334 |
< |
hp->bl[i]->tick = hdclock; /* update LRU clock */ |
313 |
< |
blglob(hp)->tick = hdclock++; |
334 |
> |
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
335 |
|
return(p); /* point to new rays */ |
315 |
– |
memerr: |
316 |
– |
error(SYSTEM, "out of memory in hdnewrays"); |
336 |
|
} |
337 |
|
|
338 |
|
|
350 |
|
return(NULL); |
351 |
|
if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) |
352 |
|
hdfreecache(PCTFREE, NULL); /* get free space */ |
353 |
< |
errno = 0; |
335 |
< |
if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) |
336 |
< |
error(SYSTEM, "cannot allocate memory for beam"); |
353 |
> |
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdgetbeam"); |
354 |
|
blglob(hp)->nrm += hp->bl[i]->nrm = n; |
355 |
+ |
errno = 0; |
356 |
|
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
357 |
|
error(SYSTEM, "seek error on holodeck file"); |
358 |
|
n *= sizeof(RAYVAL); |
359 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
360 |
|
error(SYSTEM, "error reading beam from holodeck file"); |
361 |
|
} |
362 |
< |
hp->bl[i]->tick = hdclock; /* update LRU clock */ |
345 |
< |
blglob(hp)->tick = hdclock++; |
362 |
> |
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
363 |
|
return(hp->bl[i]); |
364 |
|
} |
365 |
|
|
366 |
|
|
367 |
|
int |
368 |
< |
hdfilord(hb1, hb2) /* order beams for optimal loading */ |
368 |
> |
hdfilord(hb1, hb2) /* order beams for quick loading */ |
369 |
|
register HDBEAMI *hb1, *hb2; |
370 |
|
{ |
371 |
< |
register int c; |
372 |
< |
/* sort by file descriptor first */ |
371 |
> |
register long c; |
372 |
> |
/* residents go first */ |
373 |
> |
if (hb2->h->bl[hb2->b] != NULL) |
374 |
> |
return(hb1->h->bl[hb1->b] == NULL); |
375 |
> |
if (hb1->h->bl[hb1->b] != NULL) |
376 |
> |
return(-1); |
377 |
> |
/* otherwise sort by file descriptor */ |
378 |
|
if ((c = hb1->h->fd - hb2->h->fd)) |
379 |
|
return(c); |
380 |
|
/* then by position in file */ |
381 |
< |
return(hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo); |
381 |
> |
c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; |
382 |
> |
return(c > 0 ? 1 : c < 0 ? -1 : 0); |
383 |
|
} |
384 |
|
|
385 |
|
|
389 |
|
int (*bf)(); /* callback function (optional) */ |
390 |
|
{ |
391 |
|
unsigned origcachesize, memuse; |
369 |
– |
register BEAM *bp; |
392 |
|
int bytesloaded, needbytes, bytes2free; |
393 |
+ |
register BEAM *bp; |
394 |
|
register int i; |
395 |
|
/* precheck consistency */ |
396 |
+ |
if (n <= 0) return; |
397 |
|
for (i = n; i--; ) |
398 |
|
if (hb[i].h == NULL || hb[i].b < 1 | hb[i].b > nbeams(hb[i].h)) |
399 |
|
error(CONSISTENCY, "bad beam in hdloadbeams"); |
400 |
|
/* sort list for optimal access */ |
401 |
|
qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); |
402 |
< |
bytesloaded = needbytes = 0; /* figure out memory needs */ |
402 |
> |
bytesloaded = 0; /* run through loaded beams */ |
403 |
> |
for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { |
404 |
> |
bp->tick = hdclock; /* preempt swap */ |
405 |
> |
bytesloaded += bp->nrm; |
406 |
> |
if (bf != NULL) |
407 |
> |
(*bf)(bp, hb); |
408 |
> |
} |
409 |
> |
bytesloaded *= sizeof(RAYVAL); |
410 |
|
if ((origcachesize = hdcachesize) > 0) { |
411 |
+ |
needbytes = 0; /* figure out memory needs */ |
412 |
|
for (i = n; i--; ) |
413 |
< |
if ((bp = hb[i].h->bl[hb[i].b]) != NULL) { |
382 |
< |
bp->tick = hdclock; /* preempt swap */ |
383 |
< |
bytesloaded += bp->nrm; |
384 |
< |
} else /* prepare to load */ |
385 |
< |
needbytes += hb[i].h->bi[hb[i].b].nrd; |
386 |
< |
bytesloaded *= sizeof(RAYVAL); |
413 |
> |
needbytes += hb[i].h->bi[hb[i].b].nrd; |
414 |
|
needbytes *= sizeof(RAYVAL); |
415 |
|
do { /* free enough memory */ |
416 |
|
memuse = hdmemuse(0); |
417 |
< |
bytes2free = needbytes - (signed)(hdcachesize-memuse); |
418 |
< |
if (bytes2free > (signed)(memuse - bytesloaded)) |
417 |
> |
bytes2free = needbytes - (int)(hdcachesize-memuse); |
418 |
> |
if (bytes2free > (int)(memuse - bytesloaded)) |
419 |
|
bytes2free = memuse - bytesloaded; |
420 |
|
} while (bytes2free > 0 && |
421 |
|
hdfreecache(100*bytes2free/memuse, NULL) < 0); |
422 |
+ |
hdcachesize = 0; /* load beams w/o swap */ |
423 |
|
} |
396 |
– |
hdcachesize = 0; /* load the ordered beams w/o swap */ |
424 |
|
for (i = 0; i < n; i++) |
425 |
|
if ((bp = hdgetbeam(hb[i].h, hb[i].b)) != NULL && bf != NULL) |
426 |
< |
(*bf)(bp, hb[i].h, hb[i].b); |
426 |
> |
(*bf)(bp, hb+i); |
427 |
|
hdcachesize = origcachesize; /* resume dynamic swapping */ |
428 |
|
} |
429 |
|
|
430 |
|
|
431 |
+ |
hdfreefrag(fd, bi) /* free a file fragment */ |
432 |
+ |
int fd; |
433 |
+ |
register BEAMI *bi; |
434 |
+ |
{ |
435 |
+ |
register struct fraglist *f; |
436 |
+ |
register int j, k; |
437 |
+ |
|
438 |
+ |
if (bi->nrd == 0) |
439 |
+ |
return; |
440 |
+ |
#ifdef DEBUG |
441 |
+ |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
442 |
+ |
error(CONSISTENCY, "bad file descriptor in hdfreefrag"); |
443 |
+ |
#endif |
444 |
+ |
f = &hdfragl[fd]; |
445 |
+ |
if (f->nfrags % FRAGBLK == 0) { /* delete empty remnants */ |
446 |
+ |
for (j = k = 0; k < f->nfrags; j++, k++) { |
447 |
+ |
while (f->fi[k].nrd == 0) |
448 |
+ |
if (++k >= f->nfrags) |
449 |
+ |
goto endloop; |
450 |
+ |
if (k > j) |
451 |
+ |
copystruct(f->fi+j, f->fi+k); |
452 |
+ |
} |
453 |
+ |
endloop: |
454 |
+ |
f->nfrags = j; |
455 |
+ |
} |
456 |
+ |
j = f->nfrags++; /* allocate a slot in free list */ |
457 |
+ |
#if MAXFRAG |
458 |
+ |
if (j >= MAXFRAG-1) |
459 |
+ |
f->nfrags--; |
460 |
+ |
#endif |
461 |
+ |
if (j % FRAGBLK == 0) { /* more free list space */ |
462 |
+ |
register BEAMI *newp; |
463 |
+ |
if (f->fi == NULL) |
464 |
+ |
newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); |
465 |
+ |
else |
466 |
+ |
newp = (BEAMI *)realloc((char *)f->fi, |
467 |
+ |
(j+FRAGBLK)*sizeof(BEAMI)); |
468 |
+ |
if (newp == NULL) { |
469 |
+ |
f->nfrags--; /* graceful failure */ |
470 |
+ |
return; |
471 |
+ |
} |
472 |
+ |
f->fi = newp; |
473 |
+ |
} |
474 |
+ |
for ( ; ; j--) { /* insert in descending list */ |
475 |
+ |
if (!j || bi->fo < f->fi[j-1].fo) { |
476 |
+ |
f->fi[j].fo = bi->fo; |
477 |
+ |
f->fi[j].nrd = bi->nrd; |
478 |
+ |
break; |
479 |
+ |
} |
480 |
+ |
copystruct(f->fi+j, f->fi+(j-1)); |
481 |
+ |
} |
482 |
+ |
/* coalesce adjacent fragments */ |
483 |
+ |
/* successors never empty */ |
484 |
+ |
if (j && f->fi[j-1].fo == f->fi[j].fo + f->fi[j].nrd*sizeof(RAYVAL)) { |
485 |
+ |
f->fi[j].nrd += f->fi[j-1].nrd; |
486 |
+ |
f->fi[j-1].nrd = 0; |
487 |
+ |
} |
488 |
+ |
for (k = j+1; k < f->nfrags; k++) /* get non-empty predecessor */ |
489 |
+ |
if (f->fi[k].nrd) { |
490 |
+ |
if (f->fi[j].fo == f->fi[k].fo + |
491 |
+ |
f->fi[k].nrd*sizeof(RAYVAL)) { |
492 |
+ |
f->fi[k].nrd += f->fi[j].nrd; |
493 |
+ |
f->fi[j].nrd = 0; |
494 |
+ |
} |
495 |
+ |
break; |
496 |
+ |
} |
497 |
+ |
} |
498 |
+ |
|
499 |
+ |
|
500 |
+ |
long |
501 |
+ |
hdallocfrag(fd, nrays) /* allocate a file fragment */ |
502 |
+ |
int fd; |
503 |
+ |
unsigned int4 nrays; |
504 |
+ |
{ |
505 |
+ |
register struct fraglist *f; |
506 |
+ |
register int j, k; |
507 |
+ |
long nfo; |
508 |
+ |
|
509 |
+ |
if (nrays == 0) |
510 |
+ |
return(-1L); |
511 |
+ |
#ifdef DEBUG |
512 |
+ |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
513 |
+ |
error(CONSISTENCY, "bad file descriptor in hdallocfrag"); |
514 |
+ |
#endif |
515 |
+ |
f = &hdfragl[fd]; |
516 |
+ |
k = -1; /* find closest-sized fragment */ |
517 |
+ |
for (j = f->nfrags; j-- > 0; ) |
518 |
+ |
if (f->fi[j].nrd >= nrays && |
519 |
+ |
(k < 0 || f->fi[j].nrd < f->fi[k].nrd)) |
520 |
+ |
if (f->fi[k=j].nrd == nrays) |
521 |
+ |
break; |
522 |
+ |
if (k < 0) { /* no fragment -- extend file */ |
523 |
+ |
nfo = f->flen; |
524 |
+ |
f->flen += nrays*sizeof(RAYVAL); |
525 |
+ |
} else { /* else use fragment */ |
526 |
+ |
nfo = f->fi[k].fo; |
527 |
+ |
f->fi[k].fo += nrays*sizeof(RAYVAL); |
528 |
+ |
f->fi[k].nrd -= nrays; |
529 |
+ |
} |
530 |
+ |
return(nfo); |
531 |
+ |
} |
532 |
+ |
|
533 |
+ |
|
534 |
|
int |
535 |
|
hdsyncbeam(hp, i) /* sync beam in memory with beam on disk */ |
536 |
|
register HOLO *hp; |
537 |
|
register int i; |
538 |
|
{ |
539 |
< |
unsigned int nrays; |
410 |
< |
long nfo; |
539 |
> |
unsigned int4 nrays; |
540 |
|
unsigned int n; |
541 |
+ |
long nfo; |
542 |
|
/* check file status */ |
543 |
< |
if (hdfrag[hp->fd].writerr) |
543 |
> |
if (hdfragl[hp->fd].writerr) |
544 |
|
return(-1); |
545 |
|
#ifdef DEBUG |
546 |
|
if (i < 1 | i > nbeams(hp)) |
549 |
|
/* is current fragment OK? */ |
550 |
|
if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) |
551 |
|
return(0); |
552 |
< |
/* locate fragment */ |
553 |
< |
if (hp->fd >= nhdfrags || !hdfrag[hp->fd].nlinks) /* untracked */ |
554 |
< |
hp->bi[i].fo = lseek(hp->fd, 0L, 2); |
555 |
< |
|
426 |
< |
else if (hp->bi[i].fo + hp->bi[i].nrd*sizeof(RAYVAL) == |
427 |
< |
hdfrag[hp->fd].flen) /* EOF special case */ |
428 |
< |
hdfrag[hp->fd].flen = (nfo=hp->bi[i].fo) + nrays*sizeof(RAYVAL); |
429 |
< |
|
430 |
< |
else { /* general case */ |
431 |
< |
register struct fragment *f = &hdfrag[hp->fd]; |
432 |
< |
register int j, k; |
433 |
< |
/* relinquish old fragment */ |
434 |
< |
if (hp->bi[i].nrd) { |
435 |
< |
j = f->nfrags++; |
436 |
< |
#if MAXFRAG |
437 |
< |
if (j >= MAXFRAG-1) |
438 |
< |
f->nfrags--; |
439 |
< |
#endif |
440 |
< |
if (j % FRAGBLK == 0) { /* more frag. space */ |
441 |
< |
if (f->fi == NULL) |
442 |
< |
f->fi = (BEAMI *)malloc( |
443 |
< |
FRAGBLK*sizeof(BEAMI)); |
444 |
< |
else |
445 |
< |
f->fi = (BEAMI *)realloc((char *)f->fi, |
446 |
< |
(j+FRAGBLK)*sizeof(BEAMI)); |
447 |
< |
if (f->fi == NULL) |
448 |
< |
error(SYSTEM, |
449 |
< |
"out of memory in hdsyncbeam"); |
450 |
< |
} |
451 |
< |
for ( ; ; j--) { /* insert in descending list */ |
452 |
< |
if (!j || hp->bi[i].fo < f->fi[j-1].fo) { |
453 |
< |
f->fi[j].fo = hp->bi[i].fo; |
454 |
< |
f->fi[j].nrd = hp->bi[i].nrd; |
455 |
< |
break; |
456 |
< |
} |
457 |
< |
copystruct(f->fi+j, f->fi+(j-1)); |
458 |
< |
} |
459 |
< |
/* coalesce adjacent fragments */ |
460 |
< |
if (j && f->fi[j-1].fo == f->fi[j].fo + |
461 |
< |
f->fi[j].nrd*sizeof(RAYVAL)) { |
462 |
< |
f->fi[j].nrd += f->fi[j-1].nrd; |
463 |
< |
f->fi[j-1].nrd = 0; |
464 |
< |
} |
465 |
< |
if (j+1 < f->nfrags && f->fi[j].fo == f->fi[j+1].fo + |
466 |
< |
f->fi[j+1].nrd*sizeof(RAYVAL)) { |
467 |
< |
f->fi[j+1].nrd += f->fi[j].nrd; |
468 |
< |
f->fi[j].nrd = 0; |
469 |
< |
} |
470 |
< |
} |
471 |
< |
k = -1; /* find closest-sized fragment */ |
472 |
< |
for (j = (nrays ? f->nfrags : 0); j-- > 0; ) |
473 |
< |
if (f->fi[j].nrd >= nrays && |
474 |
< |
(k < 0 || f->fi[j].nrd < f->fi[k].nrd)) |
475 |
< |
if (f->fi[k=j].nrd == nrays) |
476 |
< |
break; |
477 |
< |
if (k < 0) { /* no fragment -- extend file */ |
478 |
< |
nfo = f->flen; |
479 |
< |
f->flen += nrays*sizeof(RAYVAL); |
480 |
< |
} else { /* else use fragment */ |
481 |
< |
nfo = f->fi[k].fo; |
482 |
< |
f->fi[k].fo += nrays*sizeof(RAYVAL); |
483 |
< |
f->fi[k].nrd -= nrays; |
484 |
< |
} |
485 |
< |
/* delete empty remnants */ |
486 |
< |
for (j = k = 0; k < f->nfrags; j++, k++) { |
487 |
< |
while (f->fi[k].nrd == 0) |
488 |
< |
if (++k >= f->nfrags) |
489 |
< |
goto endloop; |
490 |
< |
if (k > j) |
491 |
< |
copystruct(f->fi+j, f->fi+k); |
492 |
< |
} |
493 |
< |
endloop: |
494 |
< |
f->nfrags = j; |
495 |
< |
} |
496 |
< |
if (nrays) { /* write the new fragment */ |
552 |
> |
if (hp->bi[i].nrd) /* relinquish old fragment */ |
553 |
> |
hdfreefrag(hp->fd, &hp->bi[i]); |
554 |
> |
if (nrays) { /* get and write new fragment */ |
555 |
> |
nfo = hdallocfrag(hp->fd, nrays); |
556 |
|
errno = 0; |
557 |
|
if (lseek(hp->fd, nfo, 0) < 0) |
558 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
559 |
|
n = hp->bl[i]->nrm * sizeof(RAYVAL); |
560 |
|
if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { |
561 |
< |
hdfrag[hp->fd].writerr++; |
562 |
< |
hdsync(hp, 0); /* sync directory */ |
561 |
> |
hdfragl[hp->fd].writerr++; |
562 |
> |
hdsync(NULL, 0); /* sync directories */ |
563 |
|
error(SYSTEM, "write error in hdsyncbeam"); |
564 |
|
} |
565 |
< |
} |
565 |
> |
hp->bi[i].fo = nfo; |
566 |
> |
} else |
567 |
> |
hp->bi[i].fo = 0L; |
568 |
|
biglob(hp)->nrd += nrays - hp->bi[i].nrd; |
569 |
|
hp->bi[i].nrd = nrays; |
570 |
< |
hp->bi[i].fo = nfo; |
510 |
< |
markdirty(hp); /* section directory now out of date */ |
570 |
> |
markdirty(hp); /* section directory now out of date */ |
571 |
|
return(1); |
572 |
|
} |
573 |
|
|
585 |
|
nchanged += hdfreebeam(hdlist[i], 0); |
586 |
|
return(nchanged); |
587 |
|
} |
588 |
< |
if (hdfrag[hp->fd].writerr) /* check for file error */ |
588 |
> |
if (hdfragl[hp->fd].writerr) /* check for file error */ |
589 |
|
return(0); |
590 |
|
if (i == 0) { /* clear entire holodeck */ |
591 |
|
nchanged = 0; |
663 |
|
{ |
664 |
|
register int i, j; |
665 |
|
/* insert each beam from hp */ |
666 |
< |
for (i = nbeams(hp); i > 0; i--) { |
666 |
> |
for (i = 1; i <= nbeams(hp); i++) { |
667 |
|
if (hp->bl[i] == NULL) /* check if loaded */ |
668 |
|
continue; |
669 |
|
#if 0 |
695 |
|
int freetarget; |
696 |
|
int n; |
697 |
|
register int i; |
698 |
+ |
#ifdef DEBUG |
699 |
+ |
unsigned membefore; |
700 |
+ |
|
701 |
+ |
membefore = hdmemuse(0); |
702 |
+ |
#endif |
703 |
|
/* compute free target */ |
704 |
|
freetarget = (honly != NULL) ? blglob(honly)->nrm : |
705 |
|
hdmemuse(0)/sizeof(RAYVAL) ; |
720 |
|
break; |
721 |
|
} |
722 |
|
hdsync(honly, 0); /* synchronize directories as necessary */ |
723 |
+ |
#ifdef DEBUG |
724 |
+ |
sprintf(errmsg, |
725 |
+ |
"%dK before, %dK after hdfreecache (%dK total), %d rays short\n", |
726 |
+ |
membefore>>10, hdmemuse(0)>>10, hdmemuse(1)>>10, freetarget); |
727 |
+ |
wputs(errmsg); |
728 |
+ |
#endif |
729 |
|
return(-freetarget); /* return how far past goal we went */ |
730 |
|
} |
731 |
|
|
738 |
|
if (hp == NULL) { /* NULL means clean up everything */ |
739 |
|
while (hdlist[0] != NULL) |
740 |
|
hddone(hdlist[0]); |
741 |
+ |
free((char *)hdfragl); |
742 |
+ |
hdfragl = NULL; nhdfragls = 0; |
743 |
|
return; |
744 |
|
} |
745 |
|
/* flush all data and free memory */ |
746 |
< |
hdflush(hp); |
746 |
> |
hdfreebeam(hp, 0); |
747 |
> |
hdsync(hp, 0); |
748 |
|
/* release fragment resources */ |
749 |
|
hdrelease(hp->fd); |
750 |
|
/* remove hp from active list */ |