| 21 |  | #ifndef PCTFREE | 
| 22 |  | #define PCTFREE         20      /* maximum fraction to free (%) */ | 
| 23 |  | #endif | 
| 24 | + | #ifndef MAXFRAG | 
| 25 | + | #define MAXFRAG         32767   /* maximum fragments/file to track (0==inf) */ | 
| 26 | + | #endif | 
| 27 |  |  | 
| 25 | – | /* define MAXFRAG if you want to limit fragment tracking memory */ | 
| 26 | – |  | 
| 28 |  | #ifndef BSD | 
| 29 |  | #define write   writebuf        /* safe i/o routines */ | 
| 30 |  | #define read    readbuf | 
| 31 |  | #endif | 
| 32 |  |  | 
| 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 |  |  | 
| 35 | < | int     hdcachesize = CACHESIZE*1024*1024;      /* target cache size (bytes) */ | 
| 35 | > | unsigned        hdcachesize = CACHESIZE*1024*1024;      /* target cache size */ | 
| 36 |  | unsigned long   hdclock;        /* clock value */ | 
| 37 |  |  | 
| 38 |  | HOLO    *hdlist[HDMAX+1];       /* holodeck pointers (NULL term.) */ | 
| 39 |  |  | 
| 40 | < | static struct fragment { | 
| 40 | > | static struct fraglist { | 
| 41 |  | short   nlinks;         /* number of holodeck sections using us */ | 
| 42 |  | short   writerr;        /* write error encountered */ | 
| 43 |  | int     nfrags;         /* number of known fragments */ | 
| 44 |  | BEAMI   *fi;            /* fragments, descending file position */ | 
| 45 |  | long    flen;           /* last known file length */ | 
| 46 | < | } *hdfrag;              /* fragment lists, indexed by file descriptor */ | 
| 46 | > | } *hdfragl;             /* fragment lists, indexed by file descriptor */ | 
| 47 |  |  | 
| 48 | < | static int      nhdfrags;       /* size of hdfrag array */ | 
| 48 | > | static int      nhdfragls;      /* size of hdfragl array */ | 
| 49 |  |  | 
| 50 |  |  | 
| 51 |  | hdattach(fd)            /* start tracking file fragments for some section */ | 
| 52 |  | register int    fd; | 
| 53 |  | { | 
| 54 | < | if (fd >= nhdfrags) { | 
| 55 | < | if (nhdfrags) | 
| 56 | < | hdfrag = (struct fragment *)realloc((char *)hdfrag, | 
| 57 | < | (fd+1)*sizeof(struct fragment)); | 
| 54 | > | if (fd >= nhdfragls) { | 
| 55 | > | if (nhdfragls) | 
| 56 | > | hdfragl = (struct fraglist *)realloc((char *)hdfragl, | 
| 57 | > | (fd+1)*sizeof(struct fraglist)); | 
| 58 |  | else | 
| 59 | < | hdfrag = (struct fragment *)malloc( | 
| 60 | < | (fd+1)*sizeof(struct fragment)); | 
| 61 | < | if (hdfrag == NULL) | 
| 59 | > | hdfragl = (struct fraglist *)malloc( | 
| 60 | > | (fd+1)*sizeof(struct fraglist)); | 
| 61 | > | if (hdfragl == 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; | 
| 63 | > | bzero((char *)(hdfragl+nhdfragls), | 
| 64 | > | (fd+1-nhdfragls)*sizeof(struct fraglist)); | 
| 65 | > | nhdfragls = fd+1; | 
| 66 |  | } | 
| 67 | < | hdfrag[fd].nlinks++; | 
| 68 | < | hdfrag[fd].flen = lseek(fd, 0L, 2);     /* get file length */ | 
| 67 | > | hdfragl[fd].nlinks++; | 
| 68 | > | hdfragl[fd].flen = lseek(fd, 0L, 2);    /* get file length */ | 
| 69 |  | } | 
| 70 |  |  | 
| 71 |  |  | 
| 75 |  | hdrelease(fd)           /* stop tracking file fragments for some section */ | 
| 76 |  | register int    fd; | 
| 77 |  | { | 
| 78 | < | if (fd < 0 | fd >= nhdfrags || !hdfrag[fd].nlinks) | 
| 78 | > | if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) | 
| 79 |  | return; | 
| 80 | < | if (!--hdfrag[fd].nlinks && hdfrag[fd].nfrags) { | 
| 81 | < | free((char *)hdfrag[fd].fi); | 
| 82 | < | hdfrag[fd].fi = NULL; | 
| 83 | < | hdfrag[fd].nfrags = 0; | 
| 80 | > | if (!--hdfragl[fd].nlinks && hdfragl[fd].nfrags) { | 
| 81 | > | free((char *)hdfragl[fd].fi); | 
| 82 | > | hdfragl[fd].fi = NULL; | 
| 83 | > | hdfragl[fd].nfrags = 0; | 
| 84 |  | } | 
| 85 |  | } | 
| 86 |  |  | 
| 178 |  | return(n); | 
| 179 |  | } | 
| 180 |  | /* sync the beams */ | 
| 181 | < | for (j = all ? nbeams(hp) : 0; j > 0; j--) | 
| 181 | > | for (j = (all ? nbeams(hp) : 0); j > 0; j--) | 
| 182 |  | if (hp->bl[j] != NULL) | 
| 183 |  | hdsyncbeam(hp, j); | 
| 184 |  | if (!hp->dirty)                 /* directory clean? */ | 
| 194 |  | } | 
| 195 |  |  | 
| 196 |  |  | 
| 197 | < | long | 
| 197 | > | unsigned | 
| 198 |  | hdmemuse(all)           /* return memory usage (in bytes) */ | 
| 199 |  | int     all;                    /* include overhead (painful) */ | 
| 200 |  | { | 
| 213 |  | } | 
| 214 |  | } | 
| 215 |  | if (all) | 
| 216 | < | for (j = 0; j < nhdfrags; j++) { | 
| 217 | < | total += sizeof(struct fragment); | 
| 218 | < | if (hdfrag[j].nfrags) | 
| 216 | > | for (j = 0; j < nhdfragls; j++) { | 
| 217 | > | total += sizeof(struct fraglist); | 
| 218 | > | if (hdfragl[j].nfrags) | 
| 219 |  | total += FRAGBLK*sizeof(BEAMI) * | 
| 220 | < | ((hdfrag[j].nfrags-1)/FRAGBLK + 1) ; | 
| 220 | > | ((hdfragl[j].nfrags-1)/FRAGBLK + 1) ; | 
| 221 |  | } | 
| 222 |  | return(total); | 
| 223 |  | } | 
| 231 |  |  | 
| 232 |  | if (fd < 0) | 
| 233 |  | return(-1); | 
| 234 | < | if (fd >= nhdfrags || !hdfrag[fd].nlinks) { | 
| 234 | > | if (fd >= nhdfragls || !hdfragl[fd].nlinks) { | 
| 235 |  | if ((fpos = lseek(fd, 0L, 1)) < 0) | 
| 236 |  | return(-1); | 
| 237 |  | flen = lseek(fd, 0L, 2); | 
| 238 |  | lseek(fd, fpos, 0); | 
| 239 |  | return(flen); | 
| 240 |  | } | 
| 241 | < | return(hdfrag[fd].flen); | 
| 241 | > | return(hdfragl[fd].flen); | 
| 242 |  | } | 
| 243 |  |  | 
| 244 |  |  | 
| 309 |  | p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; | 
| 310 |  | hp->bl[i]->nrm += nr;                   /* update in-core structure */ | 
| 311 |  | bzero((char *)p, nr*sizeof(RAYVAL)); | 
| 312 | < | hp->bl[i]->tick = ++hdclock;            /* update LRU clock */ | 
| 313 | < | blglob(hp)->tick = hdclock; | 
| 312 | > | hp->bl[i]->tick = hdclock;              /* update LRU clock */ | 
| 313 | > | blglob(hp)->tick = hdclock++; | 
| 314 |  | return(p);                              /* point to new rays */ | 
| 315 |  | memerr: | 
| 316 |  | error(SYSTEM, "out of memory in hdnewrays"); | 
| 341 |  | if (read(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) | 
| 342 |  | error(SYSTEM, "error reading beam from holodeck file"); | 
| 343 |  | } | 
| 344 | < | hp->bl[i]->tick = ++hdclock;    /* update LRU clock */ | 
| 345 | < | blglob(hp)->tick = hdclock; | 
| 344 | > | hp->bl[i]->tick = hdclock;      /* update LRU clock */ | 
| 345 | > | blglob(hp)->tick = hdclock++; | 
| 346 |  | return(hp->bl[i]); | 
| 347 |  | } | 
| 348 |  |  | 
| 349 |  |  | 
| 350 |  | int | 
| 351 | + | hdfilord(hb1, hb2)      /* order beams for quick loading */ | 
| 352 | + | register HDBEAMI        *hb1, *hb2; | 
| 353 | + | { | 
| 354 | + | register long   c; | 
| 355 | + | /* residents go first */ | 
| 356 | + | if (hb2->h->bl[hb2->b] != NULL) | 
| 357 | + | return(hb1->h->bl[hb1->b] == NULL); | 
| 358 | + | if (hb1->h->bl[hb1->b] != NULL) | 
| 359 | + | return(-1); | 
| 360 | + | /* otherwise sort by file descriptor */ | 
| 361 | + | if ((c = hb1->h->fd - hb2->h->fd)) | 
| 362 | + | return(c); | 
| 363 | + | /* then by position in file */ | 
| 364 | + | c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; | 
| 365 | + | return(c > 0 ? 1 : c < 0 ? -1 : 0); | 
| 366 | + | } | 
| 367 | + |  | 
| 368 | + |  | 
| 369 | + | hdloadbeams(hb, n, bf)  /* load a list of beams in optimal order */ | 
| 370 | + | register HDBEAMI        *hb;    /* list gets sorted by hdfilord() */ | 
| 371 | + | int     n;                      /* list length */ | 
| 372 | + | int     (*bf)();                /* callback function (optional) */ | 
| 373 | + | { | 
| 374 | + | unsigned        origcachesize, memuse; | 
| 375 | + | register BEAM   *bp; | 
| 376 | + | int     bytesloaded, needbytes, bytes2free; | 
| 377 | + | register int    i; | 
| 378 | + | /* precheck consistency */ | 
| 379 | + | for (i = n; i--; ) | 
| 380 | + | if (hb[i].h == NULL || hb[i].b < 1 | hb[i].b > nbeams(hb[i].h)) | 
| 381 | + | error(CONSISTENCY, "bad beam in hdloadbeams"); | 
| 382 | + | /* sort list for optimal access */ | 
| 383 | + | qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); | 
| 384 | + | bytesloaded = 0;                /* run through loaded beams */ | 
| 385 | + | for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { | 
| 386 | + | bp->tick = hdclock;             /* preempt swap */ | 
| 387 | + | bytesloaded += bp->nrm; | 
| 388 | + | if (bf != NULL) | 
| 389 | + | (*bf)(bp, hb->h, hb->b); | 
| 390 | + | } | 
| 391 | + | bytesloaded *= sizeof(RAYVAL); | 
| 392 | + | if ((origcachesize = hdcachesize) > 0) { | 
| 393 | + | needbytes = 0;          /* figure out memory needs */ | 
| 394 | + | for (i = n; i--; ) | 
| 395 | + | needbytes += hb[i].h->bi[hb[i].b].nrd; | 
| 396 | + | needbytes *= sizeof(RAYVAL); | 
| 397 | + | do {                            /* free enough memory */ | 
| 398 | + | memuse = hdmemuse(0); | 
| 399 | + | bytes2free = needbytes - (int)(hdcachesize-memuse); | 
| 400 | + | if (bytes2free > (int)(memuse - bytesloaded)) | 
| 401 | + | bytes2free = memuse - bytesloaded; | 
| 402 | + | } while (bytes2free > 0 && | 
| 403 | + | hdfreecache(100*bytes2free/memuse, NULL) < 0); | 
| 404 | + | hdcachesize = 0;                /* load beams w/o swap */ | 
| 405 | + | } | 
| 406 | + | for (i = 0; i < n; i++) | 
| 407 | + | if ((bp = hdgetbeam(hb[i].h, hb[i].b)) != NULL && bf != NULL) | 
| 408 | + | (*bf)(bp, hb[i].h, hb[i].b); | 
| 409 | + | hdcachesize = origcachesize;    /* resume dynamic swapping */ | 
| 410 | + | } | 
| 411 | + |  | 
| 412 | + |  | 
| 413 | + | int | 
| 414 |  | hdsyncbeam(hp, i)               /* sync beam in memory with beam on disk */ | 
| 415 |  | register HOLO   *hp; | 
| 416 |  | register int    i; | 
| 419 |  | long    nfo; | 
| 420 |  | unsigned int    n; | 
| 421 |  | /* check file status */ | 
| 422 | < | if (hdfrag[hp->fd].writerr) | 
| 422 | > | if (hdfragl[hp->fd].writerr) | 
| 423 |  | return(-1); | 
| 424 |  | #ifdef DEBUG | 
| 425 |  | if (i < 1 | i > nbeams(hp)) | 
| 429 |  | if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) | 
| 430 |  | return(0); | 
| 431 |  | /* locate fragment */ | 
| 432 | < | if (hp->fd >= nhdfrags || !hdfrag[hp->fd].nlinks) /* untracked */ | 
| 433 | < | hp->bi[i].fo = lseek(hp->fd, 0L, 2); | 
| 432 | > | if (hp->bi[i].fo + hp->bi[i].nrd*sizeof(RAYVAL) == | 
| 433 | > | hdfragl[hp->fd].flen)           /* EOF special case */ | 
| 434 | > | hdfragl[hp->fd].flen = (nfo=hp->bi[i].fo) + nrays*sizeof(RAYVAL); | 
| 435 |  |  | 
| 371 | – | else if (hp->bi[i].fo + hp->bi[i].nrd*sizeof(RAYVAL) == | 
| 372 | – | hdfrag[hp->fd].flen)            /* EOF special case */ | 
| 373 | – | hdfrag[hp->fd].flen = (nfo=hp->bi[i].fo) + nrays*sizeof(RAYVAL); | 
| 374 | – |  | 
| 436 |  | else {                                          /* general case */ | 
| 437 | < | register struct fragment        *f = &hdfrag[hp->fd]; | 
| 437 | > | register struct fraglist        *f = &hdfragl[hp->fd]; | 
| 438 |  | register int    j, k; | 
| 439 | < | /* relinquish old fragment */ | 
| 439 | > | n = f->nfrags;          /* relinquish old fragment */ | 
| 440 |  | if (hp->bi[i].nrd) { | 
| 441 |  | j = f->nfrags++; | 
| 442 | < | #ifdef MAXFRAG | 
| 442 | > | #if MAXFRAG | 
| 443 |  | if (j >= MAXFRAG-1) | 
| 444 |  | f->nfrags--; | 
| 445 |  | #endif | 
| 460 |  | f->fi[j].nrd = hp->bi[i].nrd; | 
| 461 |  | break; | 
| 462 |  | } | 
| 463 | < | copystruct(f->fi+j, f->fi+j-1); | 
| 463 | > | copystruct(f->fi+j, f->fi+(j-1)); | 
| 464 |  | } | 
| 465 |  | /* coalesce adjacent fragments */ | 
| 466 | < | for (j = k = 0; k < f->nfrags; j++, k++) { | 
| 467 | < | if (k > j) | 
| 468 | < | copystruct(f->fi+j, f->fi+k); | 
| 469 | < | while (k+1 < f->nfrags && f->fi[k+1].fo + | 
| 470 | < | f->fi[k+1].nrd*sizeof(RAYVAL) | 
| 410 | < | == f->fi[j].fo) { | 
| 411 | < | f->fi[j].fo -= | 
| 412 | < | f->fi[++k].nrd*sizeof(RAYVAL); | 
| 413 | < | f->fi[j].nrd += f->fi[k].nrd; | 
| 414 | < | } | 
| 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 | < | f->nfrags = j; | 
| 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; ) | 
| 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) | 
| 487 |  | f->flen += nrays*sizeof(RAYVAL); | 
| 488 |  | } else {                /* else use fragment */ | 
| 489 |  | nfo = f->fi[k].fo; | 
| 490 | < | if (f->fi[k].nrd == nrays) {    /* delete fragment */ | 
| 491 | < | f->nfrags--; | 
| 492 | < | for (j = k; j < f->nfrags; j++) | 
| 432 | < | copystruct(f->fi+j, f->fi+j+1); | 
| 433 | < | } else {                        /* else shrink it */ | 
| 434 | < | f->fi[k].fo += nrays*sizeof(RAYVAL); | 
| 435 | < | f->fi[k].nrd -= nrays; | 
| 436 | < | } | 
| 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 */ | 
| 506 |  | errno = 0; | 
| 508 |  | error(SYSTEM, "cannot seek on holodeck file"); | 
| 509 |  | n = hp->bl[i]->nrm * sizeof(RAYVAL); | 
| 510 |  | if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { | 
| 511 | < | hdfrag[hp->fd].writerr++; | 
| 512 | < | hdsync(hp, 0);          /* sync directory */ | 
| 511 | > | hdfragl[hp->fd].writerr++; | 
| 512 | > | hdsync(NULL, 0);        /* sync directories */ | 
| 513 |  | error(SYSTEM, "write error in hdsyncbeam"); | 
| 514 |  | } | 
| 515 |  | } | 
| 534 |  | nchanged += hdfreebeam(hdlist[i], 0); | 
| 535 |  | return(nchanged); | 
| 536 |  | } | 
| 537 | < | if (hdfrag[hp->fd].writerr)     /* check for file error */ | 
| 537 | > | if (hdfragl[hp->fd].writerr)    /* check for file error */ | 
| 538 |  | return(0); | 
| 539 |  | if (i == 0) {                   /* clear entire holodeck */ | 
| 540 |  | nchanged = 0; | 
| 603 |  | } | 
| 604 |  |  | 
| 605 |  |  | 
| 606 | < | hdlrulist(ha, ba, n, hp)        /* add beams from holodeck to LRU list */ | 
| 607 | < | register HOLO   *ha[];                  /* section list (NULL terminated) */ | 
| 608 | < | register int    ba[];                   /* beam index to go with section */ | 
| 609 | < | int     n;                              /* length of arrays minus 1 */ | 
| 606 | > | int | 
| 607 | > | hdlrulist(hb, nents, n, hp)     /* add beams from holodeck to LRU list */ | 
| 608 | > | register HDBEAMI        *hb;            /* beam list */ | 
| 609 | > | int     nents;                          /* current list length */ | 
| 610 | > | int     n;                              /* maximum list length */ | 
| 611 |  | register HOLO   *hp;                    /* section we're adding from */ | 
| 612 |  | { | 
| 613 |  | register int    i, j; | 
| 547 | – | int     nents; | 
| 548 | – | /* find last entry in LRU list */ | 
| 549 | – | for (j = 0; ha[j] != NULL; j++) | 
| 550 | – | ; | 
| 551 | – | nents = j; | 
| 614 |  | /* insert each beam from hp */ | 
| 615 |  | for (i = nbeams(hp); i > 0; i--) { | 
| 616 |  | if (hp->bl[i] == NULL)          /* check if loaded */ | 
| 617 |  | continue; | 
| 618 | < | if ((j = ++nents) > n)          /* grow list if we can */ | 
| 618 | > | #if 0 | 
| 619 | > | if (hp->bl[i]->tick == hdclock) /* preempt swap? */ | 
| 620 | > | continue; | 
| 621 | > | #endif | 
| 622 | > | if ((j = ++nents) >= n)         /* grow list if we can */ | 
| 623 |  | nents--; | 
| 624 |  | for ( ; ; ) {                   /* bubble into place */ | 
| 625 |  | if (!--j || hp->bl[i]->tick >= | 
| 626 | < | ha[j-1]->bl[ba[j-1]]->tick) { | 
| 627 | < | ha[j] = hp; | 
| 628 | < | ba[j] = i; | 
| 626 | > | hb[j-1].h->bl[hb[j-1].b]->tick) { | 
| 627 | > | hb[j].h = hp; | 
| 628 | > | hb[j].b = i; | 
| 629 |  | break; | 
| 630 |  | } | 
| 631 | < | ha[j] = ha[j-1]; | 
| 566 | < | ba[j] = ba[j-1]; | 
| 631 | > | copystruct(hb+j, hb+(j-1)); | 
| 632 |  | } | 
| 633 |  | } | 
| 634 | < | ha[nents] = NULL;               /* all done */ | 
| 570 | < | ba[nents] = 0; | 
| 634 | > | return(nents);                  /* return new list length */ | 
| 635 |  | } | 
| 636 |  |  | 
| 637 |  |  | 
| 638 | + | int | 
| 639 |  | hdfreecache(pct, honly)         /* free up cache space, writing changes */ | 
| 640 |  | int     pct;                            /* maximum percentage to free */ | 
| 641 |  | register HOLO   *honly;                 /* NULL means check all */ | 
| 642 |  | { | 
| 643 | < | HOLO    *hp[FREEBEAMS+1]; | 
| 579 | < | int     bn[FREEBEAMS+1]; | 
| 643 | > | HDBEAMI hb[FREEBEAMS]; | 
| 644 |  | int     freetarget; | 
| 645 | + | int     n; | 
| 646 |  | register int    i; | 
| 647 |  | /* compute free target */ | 
| 648 |  | freetarget = (honly != NULL) ? blglob(honly)->nrm : | 
| 649 |  | hdmemuse(0)/sizeof(RAYVAL) ; | 
| 650 |  | freetarget = freetarget*pct/100; | 
| 651 | + | if (freetarget <= 0) | 
| 652 | + | return(0); | 
| 653 |  | /* find least recently used */ | 
| 654 | < | hp[0] = NULL; | 
| 588 | < | bn[0] = 0; | 
| 654 | > | n = 0; | 
| 655 |  | if (honly != NULL) | 
| 656 | < | hdlrulist(hp, bn, FREEBEAMS, honly); | 
| 656 | > | n = hdlrulist(hb, n, FREEBEAMS, honly); | 
| 657 |  | else | 
| 658 |  | for (i = 0; hdlist[i] != NULL; i++) | 
| 659 | < | hdlrulist(hp, bn, FREEBEAMS, hdlist[i]); | 
| 659 | > | n = hdlrulist(hb, n, FREEBEAMS, hdlist[i]); | 
| 660 |  | /* free LRU beams */ | 
| 661 | < | for (i = 0; hp[i] != NULL; i++) { | 
| 662 | < | hdfreebeam(hp[i], bn[i]); | 
| 663 | < | if ((freetarget -= hp[i]->bi[bn[i]].nrd) <= 0) | 
| 661 | > | for (i = 0; i < n; i++) { | 
| 662 | > | hdfreebeam(hb[i].h, hb[i].b); | 
| 663 | > | if ((freetarget -= hb[i].h->bi[hb[i].b].nrd) <= 0) | 
| 664 |  | break; | 
| 665 |  | } | 
| 666 |  | hdsync(honly, 0);       /* synchronize directories as necessary */ | 
| 667 | + | return(-freetarget);    /* return how far past goal we went */ | 
| 668 |  | } | 
| 669 |  |  | 
| 670 |  |  |