| 16 |
|
#define CACHESIZE 16 /* default cache size (Mbytes, 0==inf) */ |
| 17 |
|
#endif |
| 18 |
|
#ifndef FREEBEAMS |
| 19 |
< |
#define FREEBEAMS 1024 /* maximum beams to free at a time */ |
| 19 |
> |
#define FREEBEAMS 1500 /* maximum beams to free at a time */ |
| 20 |
|
#endif |
| 21 |
|
#ifndef PCTFREE |
| 22 |
|
#define PCTFREE 15 /* maximum fraction to free (%) */ |
| 23 |
|
#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 |
|
#endif |
| 27 |
+ |
#ifndef MINDIRSEL |
| 28 |
+ |
/* minimum directory seek length */ |
| 29 |
+ |
#define MINDIRSEL (4*BUFSIZ/sizeof(BEAMI)) |
| 30 |
+ |
#endif |
| 31 |
|
|
| 32 |
|
#ifndef BSD |
| 33 |
|
#define write writebuf /* safe i/o routines */ |
| 34 |
|
#define read readbuf |
| 35 |
|
#endif |
| 36 |
|
|
| 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 |
|
|
| 39 |
|
unsigned hdcachesize = CACHESIZE*1024*1024; /* target cache size */ |
| 40 |
|
unsigned long hdclock; /* clock value */ |
| 52 |
|
static int nhdfragls; /* size of hdfragl array */ |
| 53 |
|
|
| 54 |
|
|
| 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 |
|
hdattach(fd) /* start tracking file fragments for some section */ |
| 80 |
|
register int fd; |
| 81 |
|
{ |
| 82 |
|
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 |
|
bzero((char *)(hdfragl+nhdfragls), |
| 86 |
|
(fd+1-nhdfragls)*sizeof(struct fraglist)); |
| 87 |
|
nhdfragls = fd+1; |
| 107 |
|
} |
| 108 |
|
|
| 109 |
|
|
| 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 |
|
HOLO * |
| 111 |
|
hdinit(fd, hproto) /* initialize a holodeck section in a file */ |
| 112 |
|
int fd; /* corresponding file descriptor */ |
| 133 |
|
if (read(fd, (char *)(hp->bi+1), n) != n) |
| 134 |
|
error(SYSTEM, "failure loading holodeck directory"); |
| 135 |
|
/* check that it's clean */ |
| 136 |
< |
if (hp->bi[nbeams(hp)].fo < 0) |
| 137 |
< |
error(WARNING, "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; |
| 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) { |
| 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 |
| 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 */ |
| 295 |
– |
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) |
| 299 |
< |
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) ); |
| 312 |
< |
if (hp->bl[i] == NULL) |
| 313 |
< |
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 */ |
| 320 |
< |
blglob(hp)->tick = hdclock++; |
| 381 |
> |
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
| 382 |
|
return(p); /* point to new rays */ |
| 322 |
– |
memerr: |
| 323 |
– |
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; |
| 342 |
< |
if ((hp->bl[i] = (BEAM *)malloc(hdbsiz(n))) == NULL) |
| 343 |
< |
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 */ |
| 352 |
< |
blglob(hp)->tick = hdclock++; |
| 409 |
> |
blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
| 410 |
|
return(hp->bl[i]); |
| 411 |
|
} |
| 412 |
|
|
| 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"); |
| 501 |
|
f->nfrags = j; |
| 502 |
|
} |
| 503 |
|
j = f->nfrags++; /* allocate a slot in free list */ |
| 504 |
< |
#if MAXFRAG |
| 505 |
< |
if (j >= MAXFRAG-1) |
| 506 |
< |
f->nfrags--; |
| 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 |
< |
f->fi = (BEAMI *)malloc(FRAGBLK*sizeof(BEAMI)); |
| 514 |
> |
newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); |
| 515 |
|
else |
| 516 |
< |
f->fi = (BEAMI *)realloc((char *)f->fi, |
| 516 |
> |
newp = (BEAMI *)realloc((char *)f->fi, |
| 517 |
|
(j+FRAGBLK)*sizeof(BEAMI)); |
| 518 |
< |
if (f->fi == NULL) |
| 519 |
< |
error(SYSTEM, "out of memory in hdfreefrag"); |
| 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) { |
| 617 |
|
hp->bi[i].fo = 0L; |
| 618 |
|
biglob(hp)->nrd += nrays - hp->bi[i].nrd; |
| 619 |
|
hp->bi[i].nrd = nrays; |
| 620 |
< |
markdirty(hp); /* section directory now out of date */ |
| 620 |
> |
markdirty(hp, i); /* section directory now out of date */ |
| 621 |
|
return(1); |
| 622 |
|
} |
| 623 |
|
|
| 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 |
|
|
| 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 */ |