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 |
< |
#ifndef MAXFRAG |
25 |
< |
#define MAXFRAG 32767 /* maximum fragments/file to track (0==inf) */ |
24 |
> |
#ifndef MAXFRAGB |
25 |
> |
#define MAXFRAGB 16 /* fragment blocks/file to track (0==inf) */ |
26 |
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#endif |
27 |
+ |
#ifndef MINDIRSEL |
28 |
+ |
/* minimum directory seek length */ |
29 |
+ |
#define MINDIRSEL (4*BUFSIZ/sizeof(BEAMI)) |
30 |
+ |
#endif |
31 |
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|
32 |
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#ifndef BSD |
33 |
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#define write writebuf /* safe i/o routines */ |
34 |
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#define read readbuf |
35 |
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#endif |
36 |
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|
37 |
< |
#define FRAGBLK 256 /* number of fragments to allocate at a time */ |
37 |
> |
#define FRAGBLK 512 /* number of fragments to allocate at a time */ |
38 |
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|
39 |
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unsigned hdcachesize = CACHESIZE*1024*1024; /* target cache size */ |
40 |
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unsigned long hdclock; /* clock value */ |
52 |
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static int nhdfragls; /* size of hdfragl array */ |
53 |
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|
54 |
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|
55 |
+ |
char * |
56 |
+ |
hdrealloc(ptr, siz, rout) /* (re)allocate memory, retry then error */ |
57 |
+ |
char *ptr; |
58 |
+ |
unsigned siz; |
59 |
+ |
char *rout; |
60 |
+ |
{ |
61 |
+ |
register char *newp; |
62 |
+ |
/* call malloc/realloc */ |
63 |
+ |
if (ptr == NULL) newp = (char *)malloc(siz); |
64 |
+ |
else newp = (char *)realloc(ptr, siz); |
65 |
+ |
/* check success */ |
66 |
+ |
if (newp == NULL && rout != NULL) { |
67 |
+ |
hdfreecache(25, NULL); /* free some memory */ |
68 |
+ |
errno = 0; /* retry */ |
69 |
+ |
newp = hdrealloc(ptr, siz, NULL); |
70 |
+ |
if (newp == NULL) { /* give up and report error */ |
71 |
+ |
sprintf(errmsg, "out of memory in %s", rout); |
72 |
+ |
error(SYSTEM, errmsg); |
73 |
+ |
} |
74 |
+ |
} |
75 |
+ |
return(newp); |
76 |
+ |
} |
77 |
+ |
|
78 |
+ |
|
79 |
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hdattach(fd) /* start tracking file fragments for some section */ |
80 |
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register int fd; |
81 |
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{ |
82 |
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if (fd >= nhdfragls) { |
83 |
< |
if (nhdfragls) |
84 |
< |
hdfragl = (struct fraglist *)realloc((char *)hdfragl, |
57 |
< |
(fd+1)*sizeof(struct fraglist)); |
58 |
< |
else |
59 |
< |
hdfragl = (struct fraglist *)malloc( |
60 |
< |
(fd+1)*sizeof(struct fraglist)); |
61 |
< |
if (hdfragl == NULL) |
62 |
< |
error(SYSTEM, "out of memory in hdattach"); |
83 |
> |
hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, |
84 |
> |
(fd+1)*sizeof(struct fraglist), "hdattach"); |
85 |
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bzero((char *)(hdfragl+nhdfragls), |
86 |
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(fd+1-nhdfragls)*sizeof(struct fraglist)); |
87 |
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nhdfragls = fd+1; |
107 |
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} |
108 |
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|
109 |
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|
88 |
– |
markdirty(hp) /* mark holodeck section directory dirty */ |
89 |
– |
register HOLO *hp; |
90 |
– |
{ |
91 |
– |
static BEAMI smudge = {0, -1}; |
92 |
– |
|
93 |
– |
if (hp->dirty) /* already marked? */ |
94 |
– |
return; |
95 |
– |
hp->dirty = 1; |
96 |
– |
if (lseek(hp->fd, biglob(hp)->fo+(nbeams(hp)-1)*sizeof(BEAMI), 0) < 0 |
97 |
– |
|| write(hp->fd, (char *)&smudge, |
98 |
– |
sizeof(BEAMI)) != sizeof(BEAMI)) |
99 |
– |
error(SYSTEM, "seek/write error in markdirty"); |
100 |
– |
} |
101 |
– |
|
102 |
– |
|
110 |
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HOLO * |
111 |
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hdinit(fd, hproto) /* initialize a holodeck section in a file */ |
112 |
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int fd; /* corresponding file descriptor */ |
113 |
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HDGRID *hproto; /* holodeck section grid */ |
114 |
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{ |
115 |
+ |
long rtrunc; |
116 |
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long fpos; |
117 |
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register HOLO *hp; |
118 |
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register int n; |
133 |
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if (read(fd, (char *)(hp->bi+1), n) != n) |
134 |
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error(SYSTEM, "failure loading holodeck directory"); |
135 |
|
/* check that it's clean */ |
136 |
< |
if (hp->bi[nbeams(hp)].fo < 0) |
137 |
< |
error(USER, "dirty holodeck section"); |
136 |
> |
for (n = nbeams(hp); n > 0; n--) |
137 |
> |
if (hp->bi[n].fo < 0) { |
138 |
> |
hp->bi[n].fo = 0; |
139 |
> |
error(WARNING, "dirty holodeck section"); |
140 |
> |
break; |
141 |
> |
} |
142 |
|
} else { /* assume we're creating it */ |
143 |
|
if ((hp = hdalloc(hproto)) == NULL) |
144 |
|
goto memerr; |
156 |
|
hdattach(fd); |
157 |
|
/* check rays on disk */ |
158 |
|
fpos = hdfilen(fd); |
159 |
< |
biglob(hp)->nrd = 0; |
159 |
> |
biglob(hp)->nrd = rtrunc = 0; |
160 |
|
for (n = hproto == NULL ? nbeams(hp) : 0; n > 0; n--) |
161 |
|
if (hp->bi[n].nrd) |
162 |
< |
if (hp->bi[n].fo + hp->bi[n].nrd > fpos) |
163 |
< |
hp->bi[n].nrd = 0; /* off end */ |
164 |
< |
else |
162 |
> |
if (hp->bi[n].fo+hp->bi[n].nrd*sizeof(RAYVAL) > fpos) { |
163 |
> |
rtrunc += hp->bi[n].nrd; |
164 |
> |
hp->bi[n].nrd = 0; |
165 |
> |
} else |
166 |
|
biglob(hp)->nrd += hp->bi[n].nrd; |
167 |
+ |
if (rtrunc) { |
168 |
+ |
sprintf(errmsg, "truncated section, %ld rays lost (%.1f%%)", |
169 |
+ |
rtrunc, 100.*rtrunc/(rtrunc+biglob(hp)->nrd)); |
170 |
+ |
error(WARNING, errmsg); |
171 |
+ |
} |
172 |
|
/* add to holodeck list */ |
173 |
|
for (n = 0; n < HDMAX; n++) |
174 |
|
if (hdlist[n] == NULL) { |
182 |
|
} |
183 |
|
|
184 |
|
|
185 |
+ |
markdirty(hp, i) /* mark holodeck directory position dirty */ |
186 |
+ |
register HOLO *hp; |
187 |
+ |
int i; |
188 |
+ |
{ |
189 |
+ |
static BEAMI smudge = {0, -1}; |
190 |
+ |
int mindist, minpos; |
191 |
+ |
register int j; |
192 |
+ |
|
193 |
+ |
if (!hp->dirty++) { /* write smudge first time */ |
194 |
+ |
if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), 0) < 0 |
195 |
+ |
|| write(hp->fd, (char *)&smudge, |
196 |
+ |
sizeof(BEAMI)) != sizeof(BEAMI)) |
197 |
+ |
error(SYSTEM, "seek/write error in markdirty"); |
198 |
+ |
hp->dirseg[0].s = i; |
199 |
+ |
hp->dirseg[0].n = 1; |
200 |
+ |
return; |
201 |
+ |
} |
202 |
+ |
/* insert into segment list */ |
203 |
+ |
for (j = hp->dirty; j--; ) { |
204 |
+ |
if (!j || hp->dirseg[j-1].s < i) { |
205 |
+ |
hp->dirseg[j].s = i; |
206 |
+ |
hp->dirseg[j].n = 1; |
207 |
+ |
break; |
208 |
+ |
} |
209 |
+ |
copystruct(hp->dirseg+j, hp->dirseg+(j-1)); |
210 |
+ |
} |
211 |
+ |
do { /* check neighbors */ |
212 |
+ |
mindist = nbeams(hp); /* find closest */ |
213 |
+ |
for (j = hp->dirty; --j; ) |
214 |
+ |
if (hp->dirseg[j].s - |
215 |
+ |
(hp->dirseg[j-1].s + hp->dirseg[j-1].n) |
216 |
+ |
< mindist) { |
217 |
+ |
minpos = j; |
218 |
+ |
mindist = hp->dirseg[j].s - |
219 |
+ |
(hp->dirseg[j-1].s + hp->dirseg[j-1].n); |
220 |
+ |
} |
221 |
+ |
/* good enough? */ |
222 |
+ |
if (hp->dirty <= MAXDIRSE && mindist > MINDIRSEL) |
223 |
+ |
break; |
224 |
+ |
j = minpos - 1; /* coalesce neighbors */ |
225 |
+ |
if (hp->dirseg[j].s + hp->dirseg[j].n < |
226 |
+ |
hp->dirseg[minpos].s + hp->dirseg[minpos].n) |
227 |
+ |
hp->dirseg[j].n = hp->dirseg[minpos].s + |
228 |
+ |
hp->dirseg[minpos].n - hp->dirseg[j].s; |
229 |
+ |
hp->dirty--; |
230 |
+ |
while (++j < hp->dirty) /* close the gap */ |
231 |
+ |
copystruct(hp->dirseg+j, hp->dirseg+(j+1)); |
232 |
+ |
} while (mindist <= MINDIRSEL); |
233 |
+ |
} |
234 |
+ |
|
235 |
+ |
|
236 |
|
int |
237 |
|
hdsync(hp, all) /* update beams and directory on disk */ |
238 |
|
register HOLO *hp; |
252 |
|
hdsyncbeam(hp, j); |
253 |
|
if (!hp->dirty) /* directory clean? */ |
254 |
|
return(0); |
255 |
< |
errno = 0; |
256 |
< |
if (lseek(hp->fd, biglob(hp)->fo, 0) < 0) |
257 |
< |
error(SYSTEM, "cannot seek on holodeck file"); |
258 |
< |
n = nbeams(hp)*sizeof(BEAMI); |
259 |
< |
if (write(hp->fd, (char *)(hp->bi+1), n) != n) |
260 |
< |
error(SYSTEM, "cannot update holodeck section directory"); |
261 |
< |
hp->dirty = 0; |
255 |
> |
errno = 0; /* write dirty segments */ |
256 |
> |
for (j = 0; j < hp->dirty; j++) { |
257 |
> |
if (lseek(hp->fd, biglob(hp)->fo + |
258 |
> |
(hp->dirseg[j].s-1)*sizeof(BEAMI), 0) < 0) |
259 |
> |
error(SYSTEM, "cannot seek on holodeck file"); |
260 |
> |
n = hp->dirseg[j].n * sizeof(BEAMI); |
261 |
> |
if (write(hp->fd, (char *)(hp->bi+hp->dirseg[j].s), n) != n) |
262 |
> |
error(SYSTEM, "cannot update section directory"); |
263 |
> |
} |
264 |
> |
hp->dirty = 0; /* all clean */ |
265 |
|
return(1); |
266 |
|
} |
267 |
|
|
357 |
|
hp->bl[i]->tick = hdclock; /* preempt swap */ |
358 |
|
if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) |
359 |
|
hdfreecache(PCTFREE, NULL); /* free some space */ |
288 |
– |
errno = 0; |
360 |
|
if (hp->bl[i] == NULL) { /* allocate (and load) */ |
361 |
|
n = hp->bi[i].nrd + nr; |
362 |
< |
if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) |
292 |
< |
goto memerr; |
362 |
> |
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdnewrays"); |
363 |
|
blglob(hp)->nrm += n; |
364 |
|
if (n = hp->bl[i]->nrm = hp->bi[i].nrd) { |
365 |
+ |
errno = 0; |
366 |
|
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
367 |
|
error(SYSTEM, "seek error on holodeck file"); |
368 |
|
n *= sizeof(RAYVAL); |
371 |
|
"error reading beam from holodeck file"); |
372 |
|
} |
373 |
|
} else { /* just grow in memory */ |
374 |
< |
hp->bl[i] = (BEAM *)realloc( (char *)hp->bl[i], |
375 |
< |
hdbsiz(hp->bl[i]->nrm + nr) ); |
305 |
< |
if (hp->bl[i] == NULL) |
306 |
< |
goto memerr; |
374 |
> |
hp->bl[i] = (BEAM *)hdrealloc((char *)hp->bl[i], |
375 |
> |
hdbsiz(hp->bl[i]->nrm + nr), "hdnewrays"); |
376 |
|
blglob(hp)->nrm += nr; |
377 |
|
} |
378 |
|
p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
379 |
|
hp->bl[i]->nrm += nr; /* update in-core structure */ |
380 |
|
bzero((char *)p, nr*sizeof(RAYVAL)); |
381 |
< |
hp->bl[i]->tick = hdclock; /* update LRU clock */ |
313 |
< |
blglob(hp)->tick = hdclock++; |
381 |
> |
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
382 |
|
return(p); /* point to new rays */ |
315 |
– |
memerr: |
316 |
– |
error(SYSTEM, "out of memory in hdnewrays"); |
383 |
|
} |
384 |
|
|
385 |
|
|
397 |
|
return(NULL); |
398 |
|
if (hdcachesize > 0 && hdmemuse(0) >= hdcachesize) |
399 |
|
hdfreecache(PCTFREE, NULL); /* get free space */ |
400 |
< |
errno = 0; |
335 |
< |
if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) |
336 |
< |
error(SYSTEM, "cannot allocate memory for beam"); |
400 |
> |
hp->bl[i] = (BEAM *)hdrealloc(NULL, hdbsiz(n), "hdgetbeam"); |
401 |
|
blglob(hp)->nrm += hp->bl[i]->nrm = n; |
402 |
+ |
errno = 0; |
403 |
|
if (lseek(hp->fd, hp->bi[i].fo, 0) < 0) |
404 |
|
error(SYSTEM, "seek error on holodeck file"); |
405 |
|
n *= sizeof(RAYVAL); |
406 |
|
if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) |
407 |
|
error(SYSTEM, "error reading beam from holodeck file"); |
408 |
|
} |
409 |
< |
hp->bl[i]->tick = hdclock; /* update LRU clock */ |
345 |
< |
blglob(hp)->tick = hdclock++; |
409 |
> |
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
410 |
|
return(hp->bl[i]); |
411 |
|
} |
412 |
|
|
436 |
|
int (*bf)(); /* callback function (optional) */ |
437 |
|
{ |
438 |
|
unsigned origcachesize, memuse; |
375 |
– |
register BEAM *bp; |
439 |
|
int bytesloaded, needbytes, bytes2free; |
440 |
+ |
register BEAM *bp; |
441 |
|
register int i; |
442 |
|
/* precheck consistency */ |
443 |
+ |
if (n <= 0) return; |
444 |
|
for (i = n; i--; ) |
445 |
|
if (hb[i].h == NULL || hb[i].b < 1 | hb[i].b > nbeams(hb[i].h)) |
446 |
|
error(CONSISTENCY, "bad beam in hdloadbeams"); |
448 |
|
qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); |
449 |
|
bytesloaded = 0; /* run through loaded beams */ |
450 |
|
for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { |
451 |
< |
bp->tick = hdclock; /* preempt swap */ |
451 |
> |
bp->tick = hdclock; /* preempt swap */ |
452 |
|
bytesloaded += bp->nrm; |
453 |
|
if (bf != NULL) |
454 |
< |
(*bf)(bp, hb->h, hb->b); |
454 |
> |
(*bf)(bp, hb); |
455 |
|
} |
456 |
|
bytesloaded *= sizeof(RAYVAL); |
457 |
|
if ((origcachesize = hdcachesize) > 0) { |
470 |
|
} |
471 |
|
for (i = 0; i < n; i++) |
472 |
|
if ((bp = hdgetbeam(hb[i].h, hb[i].b)) != NULL && bf != NULL) |
473 |
< |
(*bf)(bp, hb[i].h, hb[i].b); |
473 |
> |
(*bf)(bp, hb+i); |
474 |
|
hdcachesize = origcachesize; /* resume dynamic swapping */ |
475 |
|
} |
476 |
|
|
477 |
|
|
478 |
+ |
hdfreefrag(fd, bi) /* free a file fragment */ |
479 |
+ |
int fd; |
480 |
+ |
register BEAMI *bi; |
481 |
+ |
{ |
482 |
+ |
register struct fraglist *f; |
483 |
+ |
register int j, k; |
484 |
+ |
|
485 |
+ |
if (bi->nrd == 0) |
486 |
+ |
return; |
487 |
+ |
#ifdef DEBUG |
488 |
+ |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
489 |
+ |
error(CONSISTENCY, "bad file descriptor in hdfreefrag"); |
490 |
+ |
#endif |
491 |
+ |
f = &hdfragl[fd]; |
492 |
+ |
if (f->nfrags % FRAGBLK == 0) { /* delete empty remnants */ |
493 |
+ |
for (j = k = 0; k < f->nfrags; j++, k++) { |
494 |
+ |
while (f->fi[k].nrd == 0) |
495 |
+ |
if (++k >= f->nfrags) |
496 |
+ |
goto endloop; |
497 |
+ |
if (k > j) |
498 |
+ |
copystruct(f->fi+j, f->fi+k); |
499 |
+ |
} |
500 |
+ |
endloop: |
501 |
+ |
f->nfrags = j; |
502 |
+ |
} |
503 |
+ |
j = f->nfrags++; /* allocate a slot in free list */ |
504 |
+ |
#if MAXFRAGB |
505 |
+ |
if (j >= MAXFRAGB*FRAGBLK) { |
506 |
+ |
f->nfrags = j--; /* stop list growth */ |
507 |
+ |
if (bi->nrd <= f->fi[j].nrd) |
508 |
+ |
return; /* new one no better than discard */ |
509 |
+ |
} |
510 |
+ |
#endif |
511 |
+ |
if (j % FRAGBLK == 0) { /* more free list space */ |
512 |
+ |
register BEAMI *newp; |
513 |
+ |
if (f->fi == NULL) |
514 |
+ |
newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); |
515 |
+ |
else |
516 |
+ |
newp = (BEAMI *)realloc((char *)f->fi, |
517 |
+ |
(j+FRAGBLK)*sizeof(BEAMI)); |
518 |
+ |
if (newp == NULL) { |
519 |
+ |
f->nfrags--; /* graceful failure */ |
520 |
+ |
return; |
521 |
+ |
} |
522 |
+ |
f->fi = newp; |
523 |
+ |
} |
524 |
+ |
for ( ; ; j--) { /* insert in descending list */ |
525 |
+ |
if (!j || bi->fo < f->fi[j-1].fo) { |
526 |
+ |
f->fi[j].fo = bi->fo; |
527 |
+ |
f->fi[j].nrd = bi->nrd; |
528 |
+ |
break; |
529 |
+ |
} |
530 |
+ |
copystruct(f->fi+j, f->fi+(j-1)); |
531 |
+ |
} |
532 |
+ |
/* coalesce adjacent fragments */ |
533 |
+ |
/* successors never empty */ |
534 |
+ |
if (j && f->fi[j-1].fo == f->fi[j].fo + f->fi[j].nrd*sizeof(RAYVAL)) { |
535 |
+ |
f->fi[j].nrd += f->fi[j-1].nrd; |
536 |
+ |
f->fi[j-1].nrd = 0; |
537 |
+ |
} |
538 |
+ |
for (k = j+1; k < f->nfrags; k++) /* get non-empty predecessor */ |
539 |
+ |
if (f->fi[k].nrd) { |
540 |
+ |
if (f->fi[j].fo == f->fi[k].fo + |
541 |
+ |
f->fi[k].nrd*sizeof(RAYVAL)) { |
542 |
+ |
f->fi[k].nrd += f->fi[j].nrd; |
543 |
+ |
f->fi[j].nrd = 0; |
544 |
+ |
} |
545 |
+ |
break; |
546 |
+ |
} |
547 |
+ |
} |
548 |
+ |
|
549 |
+ |
|
550 |
+ |
long |
551 |
+ |
hdallocfrag(fd, nrays) /* allocate a file fragment */ |
552 |
+ |
int fd; |
553 |
+ |
unsigned int4 nrays; |
554 |
+ |
{ |
555 |
+ |
register struct fraglist *f; |
556 |
+ |
register int j, k; |
557 |
+ |
long nfo; |
558 |
+ |
|
559 |
+ |
if (nrays == 0) |
560 |
+ |
return(-1L); |
561 |
+ |
#ifdef DEBUG |
562 |
+ |
if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) |
563 |
+ |
error(CONSISTENCY, "bad file descriptor in hdallocfrag"); |
564 |
+ |
#endif |
565 |
+ |
f = &hdfragl[fd]; |
566 |
+ |
k = -1; /* find closest-sized fragment */ |
567 |
+ |
for (j = f->nfrags; j-- > 0; ) |
568 |
+ |
if (f->fi[j].nrd >= nrays && |
569 |
+ |
(k < 0 || f->fi[j].nrd < f->fi[k].nrd)) |
570 |
+ |
if (f->fi[k=j].nrd == nrays) |
571 |
+ |
break; |
572 |
+ |
if (k < 0) { /* no fragment -- extend file */ |
573 |
+ |
nfo = f->flen; |
574 |
+ |
f->flen += nrays*sizeof(RAYVAL); |
575 |
+ |
} else { /* else use fragment */ |
576 |
+ |
nfo = f->fi[k].fo; |
577 |
+ |
f->fi[k].fo += nrays*sizeof(RAYVAL); |
578 |
+ |
f->fi[k].nrd -= nrays; |
579 |
+ |
} |
580 |
+ |
return(nfo); |
581 |
+ |
} |
582 |
+ |
|
583 |
+ |
|
584 |
|
int |
585 |
|
hdsyncbeam(hp, i) /* sync beam in memory with beam on disk */ |
586 |
|
register HOLO *hp; |
587 |
|
register int i; |
588 |
|
{ |
589 |
< |
unsigned int nrays; |
419 |
< |
long nfo; |
589 |
> |
unsigned int4 nrays; |
590 |
|
unsigned int n; |
591 |
+ |
long nfo; |
592 |
|
/* check file status */ |
593 |
|
if (hdfragl[hp->fd].writerr) |
594 |
|
return(-1); |
599 |
|
/* is current fragment OK? */ |
600 |
|
if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) |
601 |
|
return(0); |
602 |
< |
/* locate fragment */ |
603 |
< |
if (hp->bi[i].fo + hp->bi[i].nrd*sizeof(RAYVAL) == |
604 |
< |
hdfragl[hp->fd].flen) /* EOF special case */ |
605 |
< |
hdfragl[hp->fd].flen = (nfo=hp->bi[i].fo) + nrays*sizeof(RAYVAL); |
435 |
< |
|
436 |
< |
else { /* general case */ |
437 |
< |
register struct fraglist *f = &hdfragl[hp->fd]; |
438 |
< |
register int j, k; |
439 |
< |
n = f->nfrags; /* relinquish old fragment */ |
440 |
< |
if (hp->bi[i].nrd) { |
441 |
< |
j = f->nfrags++; |
442 |
< |
#if MAXFRAG |
443 |
< |
if (j >= MAXFRAG-1) |
444 |
< |
f->nfrags--; |
445 |
< |
#endif |
446 |
< |
if (j % FRAGBLK == 0) { /* more frag. space */ |
447 |
< |
if (f->fi == NULL) |
448 |
< |
f->fi = (BEAMI *)malloc( |
449 |
< |
FRAGBLK*sizeof(BEAMI)); |
450 |
< |
else |
451 |
< |
f->fi = (BEAMI *)realloc((char *)f->fi, |
452 |
< |
(j+FRAGBLK)*sizeof(BEAMI)); |
453 |
< |
if (f->fi == NULL) |
454 |
< |
error(SYSTEM, |
455 |
< |
"out of memory in hdsyncbeam"); |
456 |
< |
} |
457 |
< |
for ( ; ; j--) { /* insert in descending list */ |
458 |
< |
if (!j || hp->bi[i].fo < f->fi[j-1].fo) { |
459 |
< |
f->fi[j].fo = hp->bi[i].fo; |
460 |
< |
f->fi[j].nrd = hp->bi[i].nrd; |
461 |
< |
break; |
462 |
< |
} |
463 |
< |
copystruct(f->fi+j, f->fi+(j-1)); |
464 |
< |
} |
465 |
< |
/* coalesce adjacent fragments */ |
466 |
< |
if (j && f->fi[j-1].fo == f->fi[j].fo + |
467 |
< |
f->fi[j].nrd*sizeof(RAYVAL)) { |
468 |
< |
f->fi[j].nrd += f->fi[j-1].nrd; |
469 |
< |
f->fi[j-1].nrd = 0; |
470 |
< |
n = j-1; |
471 |
< |
} |
472 |
< |
if (j+1 < f->nfrags && f->fi[j].fo == f->fi[j+1].fo + |
473 |
< |
f->fi[j+1].nrd*sizeof(RAYVAL)) { |
474 |
< |
f->fi[j+1].nrd += f->fi[j].nrd; |
475 |
< |
f->fi[j].nrd = 0; |
476 |
< |
if (j < n) n = j; |
477 |
< |
} |
478 |
< |
} |
479 |
< |
k = -1; /* find closest-sized fragment */ |
480 |
< |
for (j = (nrays ? f->nfrags : 0); j-- > 0; ) |
481 |
< |
if (f->fi[j].nrd >= nrays && |
482 |
< |
(k < 0 || f->fi[j].nrd < f->fi[k].nrd)) |
483 |
< |
if (f->fi[k=j].nrd == nrays) |
484 |
< |
break; |
485 |
< |
if (k < 0) { /* no fragment -- extend file */ |
486 |
< |
nfo = f->flen; |
487 |
< |
f->flen += nrays*sizeof(RAYVAL); |
488 |
< |
} else { /* else use fragment */ |
489 |
< |
nfo = f->fi[k].fo; |
490 |
< |
f->fi[k].fo += nrays*sizeof(RAYVAL); |
491 |
< |
if (!(f->fi[k].nrd -= nrays) && k < n) |
492 |
< |
n = k; |
493 |
< |
} |
494 |
< |
/* delete empty remnants */ |
495 |
< |
for (j = k = n; k < f->nfrags; j++, k++) { |
496 |
< |
while (f->fi[k].nrd == 0) |
497 |
< |
if (++k >= f->nfrags) |
498 |
< |
goto endloop; |
499 |
< |
if (k > j) |
500 |
< |
copystruct(f->fi+j, f->fi+k); |
501 |
< |
} |
502 |
< |
endloop: |
503 |
< |
f->nfrags = j; |
504 |
< |
} |
505 |
< |
if (nrays) { /* write the new fragment */ |
602 |
> |
if (hp->bi[i].nrd) /* relinquish old fragment */ |
603 |
> |
hdfreefrag(hp->fd, &hp->bi[i]); |
604 |
> |
if (nrays) { /* get and write new fragment */ |
605 |
> |
nfo = hdallocfrag(hp->fd, nrays); |
606 |
|
errno = 0; |
607 |
|
if (lseek(hp->fd, nfo, 0) < 0) |
608 |
|
error(SYSTEM, "cannot seek on holodeck file"); |
612 |
|
hdsync(NULL, 0); /* sync directories */ |
613 |
|
error(SYSTEM, "write error in hdsyncbeam"); |
614 |
|
} |
615 |
< |
} |
615 |
> |
hp->bi[i].fo = nfo; |
616 |
> |
} else |
617 |
> |
hp->bi[i].fo = 0L; |
618 |
|
biglob(hp)->nrd += nrays - hp->bi[i].nrd; |
619 |
|
hp->bi[i].nrd = nrays; |
620 |
< |
hp->bi[i].fo = nfo; |
519 |
< |
markdirty(hp); /* section directory now out of date */ |
620 |
> |
markdirty(hp, i); /* section directory now out of date */ |
621 |
|
return(1); |
622 |
|
} |
623 |
|
|
713 |
|
{ |
714 |
|
register int i, j; |
715 |
|
/* insert each beam from hp */ |
716 |
< |
for (i = nbeams(hp); i > 0; i--) { |
716 |
> |
for (i = 1; i <= nbeams(hp); i++) { |
717 |
|
if (hp->bl[i] == NULL) /* check if loaded */ |
718 |
|
continue; |
719 |
|
#if 0 |
745 |
|
int freetarget; |
746 |
|
int n; |
747 |
|
register int i; |
748 |
+ |
#ifdef DEBUG |
749 |
+ |
unsigned membefore; |
750 |
+ |
|
751 |
+ |
membefore = hdmemuse(0); |
752 |
+ |
#endif |
753 |
|
/* compute free target */ |
754 |
|
freetarget = (honly != NULL) ? blglob(honly)->nrm : |
755 |
|
hdmemuse(0)/sizeof(RAYVAL) ; |
770 |
|
break; |
771 |
|
} |
772 |
|
hdsync(honly, 0); /* synchronize directories as necessary */ |
773 |
+ |
#ifdef DEBUG |
774 |
+ |
sprintf(errmsg, |
775 |
+ |
"%dK before, %dK after hdfreecache (%dK total), %d rays short\n", |
776 |
+ |
membefore>>10, hdmemuse(0)>>10, hdmemuse(1)>>10, freetarget); |
777 |
+ |
wputs(errmsg); |
778 |
+ |
#endif |
779 |
|
return(-freetarget); /* return how far past goal we went */ |
780 |
|
} |
781 |
|
|
788 |
|
if (hp == NULL) { /* NULL means clean up everything */ |
789 |
|
while (hdlist[0] != NULL) |
790 |
|
hddone(hdlist[0]); |
791 |
+ |
free((char *)hdfragl); |
792 |
+ |
hdfragl = NULL; nhdfragls = 0; |
793 |
|
return; |
794 |
|
} |
795 |
|
/* flush all data and free memory */ |
796 |
< |
hdflush(hp); |
796 |
> |
hdfreebeam(hp, 0); |
797 |
> |
hdsync(hp, 0); |
798 |
|
/* release fragment resources */ |
799 |
|
hdrelease(hp->fd); |
800 |
|
/* remove hp from active list */ |