| 1 | – | /* Copyright (c) 1999 Silicon Graphics, Inc. */ | 
| 2 | – |  | 
| 1 |  | #ifndef lint | 
| 2 | < | static char SCCSid[] = "$SunId$ SGI"; | 
| 2 | > | static const char       RCSid[] = "$Id$"; | 
| 3 |  | #endif | 
| 6 | – |  | 
| 4 |  | /* | 
| 5 |  | * Routines for managing holodeck files | 
| 6 |  | * | 
| 7 |  | *      9/30/97 GWLarson | 
| 8 |  | */ | 
| 9 |  |  | 
| 10 | + | #include "copyright.h" | 
| 11 | + |  | 
| 12 | + | #include <string.h> | 
| 13 | + |  | 
| 14 |  | #include "holo.h" | 
| 15 |  |  | 
| 16 |  | #ifndef CACHESIZE | 
| 17 | < | #ifdef BIGMEM | 
| 18 | < | #define CACHESIZE       32      /* default cache size (Mbytes, 0==inf) */ | 
| 17 | > | #ifdef SMLMEM | 
| 18 | > | #define CACHESIZE       5 | 
| 19 |  | #else | 
| 20 | < | #define CACHESIZE       12 | 
| 20 | > | #define CACHESIZE       17      /* default cache size (Mbytes, 0==inf) */ | 
| 21 |  | #endif | 
| 22 |  | #endif | 
| 23 |  | #ifndef FREEBEAMS | 
| 31 |  | #endif | 
| 32 |  | #ifndef FF_DEFAULT | 
| 33 |  | /* when to free a beam fragment */ | 
| 34 | < | #define FF_DEFAULT      (FF_ALLOC|FF_WRITE|FF_KILL) | 
| 34 | > | #define FF_DEFAULT      (FF_WRITE|FF_KILL) | 
| 35 |  | #endif | 
| 36 |  | #ifndef MINDIRSEL | 
| 37 |  | /* minimum directory seek length */ | 
| 53 |  |  | 
| 54 |  | static struct fraglist { | 
| 55 |  | short   nlinks;         /* number of holodeck sections using us */ | 
| 56 | < | short   writerr;        /* write error encountered */ | 
| 56 | > | short   writable;       /* 0 read-only, <0 write error encountered */ | 
| 57 |  | int     nfrags;         /* number of known fragments */ | 
| 58 |  | BEAMI   *fi;            /* fragments, descending file position */ | 
| 59 | < | long    flen;           /* last known file length */ | 
| 59 | > | off_t   flen;           /* last known file length */ | 
| 60 |  | } *hdfragl;             /* fragment lists, indexed by file descriptor */ | 
| 61 |  |  | 
| 62 |  | static int      nhdfragls;      /* size of hdfragl array */ | 
| 63 |  |  | 
| 64 |  |  | 
| 65 | + | HOLO * | 
| 66 | + | hdalloc(hproto)         /* allocate and set holodeck section based on grid */ | 
| 67 | + | HDGRID  *hproto; | 
| 68 | + | { | 
| 69 | + | HOLO    hdhead; | 
| 70 | + | register HOLO   *hp; | 
| 71 | + | int     n; | 
| 72 | + | /* copy grid to temporary header */ | 
| 73 | + | memcpy((void *)&hdhead, (void *)hproto, sizeof(HDGRID)); | 
| 74 | + | /* compute grid vectors and sizes */ | 
| 75 | + | hdcompgrid(&hdhead); | 
| 76 | + | /* allocate header with directory */ | 
| 77 | + | n = sizeof(HOLO)+nbeams(&hdhead)*sizeof(BEAMI); | 
| 78 | + | if ((hp = (HOLO *)malloc(n)) == NULL) | 
| 79 | + | return(NULL); | 
| 80 | + | /* copy header information */ | 
| 81 | + | *hp = hdhead; | 
| 82 | + | /* allocate and clear beam list */ | 
| 83 | + | hp->bl = (BEAM **)malloc((nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); | 
| 84 | + | if (hp->bl == NULL) { | 
| 85 | + | free((void *)hp); | 
| 86 | + | return(NULL); | 
| 87 | + | } | 
| 88 | + | memset((void *)hp->bl, '\0', (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); | 
| 89 | + | hp->bl[0] = (BEAM *)(hp->bl+nbeams(hp)+1);      /* set blglob(hp) */ | 
| 90 | + | hp->fd = -1; | 
| 91 | + | hp->dirty = 0; | 
| 92 | + | hp->priv = NULL; | 
| 93 | + | /* clear beam directory */ | 
| 94 | + | memset((void *)hp->bi, '\0', (nbeams(hp)+1)*sizeof(BEAMI)); | 
| 95 | + | return(hp);             /* all is well */ | 
| 96 | + | } | 
| 97 | + |  | 
| 98 | + |  | 
| 99 |  | char * | 
| 100 |  | hdrealloc(ptr, siz, rout)       /* (re)allocate memory, retry then error */ | 
| 101 |  | char    *ptr; | 
| 105 |  | register char   *newp; | 
| 106 |  | /* call malloc/realloc */ | 
| 107 |  | if (ptr == NULL) newp = (char *)malloc(siz); | 
| 108 | < | else newp = (char *)realloc(ptr, siz); | 
| 108 | > | else newp = (char *)realloc((void *)ptr, siz); | 
| 109 |  | /* check success */ | 
| 110 |  | if (newp == NULL && rout != NULL) { | 
| 111 |  | hdfreecache(25, NULL);  /* free some memory */ | 
| 120 |  | } | 
| 121 |  |  | 
| 122 |  |  | 
| 123 | < | hdattach(fd)            /* start tracking file fragments for some section */ | 
| 123 | > | hdattach(fd, wr)        /* start tracking file fragments for some section */ | 
| 124 |  | register int    fd; | 
| 125 | + | int     wr; | 
| 126 |  | { | 
| 127 |  | if (fd >= nhdfragls) { | 
| 128 |  | hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, | 
| 129 |  | (fd+1)*sizeof(struct fraglist), "hdattach"); | 
| 130 | < | bzero((char *)(hdfragl+nhdfragls), | 
| 131 | < | (fd+1-nhdfragls)*sizeof(struct fraglist)); | 
| 130 | > | memset((void *)(hdfragl+nhdfragls), | 
| 131 | > | '\0', (fd+1-nhdfragls)*sizeof(struct fraglist)); | 
| 132 |  | nhdfragls = fd+1; | 
| 133 |  | } | 
| 134 |  | hdfragl[fd].nlinks++; | 
| 135 | < | hdfragl[fd].flen = lseek(fd, 0L, 2);    /* get file length */ | 
| 135 | > | hdfragl[fd].writable = wr;              /* set writable flag */ | 
| 136 | > | hdfragl[fd].flen = lseek(fd, (off_t)0, 2);      /* get file length */ | 
| 137 |  | } | 
| 138 |  |  | 
| 139 |  |  | 
| 146 |  | if (fd < 0 | fd >= nhdfragls || !hdfragl[fd].nlinks) | 
| 147 |  | return; | 
| 148 |  | if (!--hdfragl[fd].nlinks && hdfragl[fd].nfrags) { | 
| 149 | < | free((char *)hdfragl[fd].fi); | 
| 149 | > | free((void *)hdfragl[fd].fi); | 
| 150 |  | hdfragl[fd].fi = NULL; | 
| 151 |  | hdfragl[fd].nfrags = 0; | 
| 152 |  | } | 
| 158 |  | int     fd;                     /* corresponding file descriptor */ | 
| 159 |  | HDGRID  *hproto;                /* holodeck section grid */ | 
| 160 |  | { | 
| 161 | < | long    rtrunc; | 
| 162 | < | long    fpos; | 
| 161 | > | off_t   rtrunc; | 
| 162 | > | off_t   fpos; | 
| 163 | > | int     writable; | 
| 164 |  | register HOLO   *hp; | 
| 165 |  | register int    n; | 
| 166 |  | /* prepare for system errors */ | 
| 167 |  | errno = 0; | 
| 168 | < | if ((fpos = lseek(fd, 0L, 1)) < 0) | 
| 168 | > | if ((fpos = lseek(fd, (off_t)0, 1)) < 0) | 
| 169 |  | error(SYSTEM, "cannot determine holodeck file position"); | 
| 170 |  | if (hproto == NULL) {           /* assume we're loading it */ | 
| 171 |  | HDGRID  hpr; | 
| 186 |  | error(WARNING, "dirty holodeck section"); | 
| 187 |  | break; | 
| 188 |  | } | 
| 189 | < | } else {                        /* assume we're creating it */ | 
| 189 | > | /* check writability */ | 
| 190 | > | if (fd < nhdfragls && hdfragl[fd].nlinks) | 
| 191 | > | writable = hdfragl[fd].writable; | 
| 192 | > | else | 
| 193 | > | writable = lseek(fd, fpos, 0) == fpos && | 
| 194 | > | write(fd, (char *)hp, sizeof(HDGRID)) == | 
| 195 | > | sizeof(HDGRID); | 
| 196 | > | } else {                        /* else assume we're creating it */ | 
| 197 |  | if ((hp = hdalloc(hproto)) == NULL) | 
| 198 |  | goto memerr; | 
| 199 |  | /* write header and skeleton */ | 
| 202 |  | sizeof(HDGRID) || | 
| 203 |  | write(fd, (char *)(hp->bi+1), n) != n) | 
| 204 |  | error(SYSTEM, "cannot write header to holodeck file"); | 
| 205 | + | writable = 1; | 
| 206 |  | } | 
| 207 |  | hp->fd = fd; | 
| 208 |  | hp->dirty = 0; | 
| 209 |  | biglob(hp)->fo = fpos + sizeof(HDGRID); | 
| 210 |  | /* start tracking fragments */ | 
| 211 | < | hdattach(fd); | 
| 211 | > | hdattach(fd, writable); | 
| 212 |  | /* check rays on disk */ | 
| 213 |  | fpos = hdfilen(fd); | 
| 214 |  | biglob(hp)->nrd = rtrunc = 0; | 
| 237 |  | } | 
| 238 |  |  | 
| 239 |  |  | 
| 240 | < | markdirty(hp, i)                /* mark holodeck directory position dirty */ | 
| 240 | > | hdmarkdirty(hp, i)              /* mark holodeck directory position dirty */ | 
| 241 |  | register HOLO   *hp; | 
| 242 |  | int     i; | 
| 243 |  | { | 
| 249 |  | if (lseek(hp->fd, biglob(hp)->fo+(i-1)*sizeof(BEAMI), 0) < 0 | 
| 250 |  | || write(hp->fd, (char *)&smudge, | 
| 251 |  | sizeof(BEAMI)) != sizeof(BEAMI)) | 
| 252 | < | error(SYSTEM, "seek/write error in markdirty"); | 
| 252 | > | error(SYSTEM, "seek/write error in hdmarkdirty"); | 
| 253 |  | hp->dirseg[0].s = i; | 
| 254 |  | hp->dirseg[0].n = 1; | 
| 255 |  | return; | 
| 261 |  | hp->dirseg[j].n = 1; | 
| 262 |  | break; | 
| 263 |  | } | 
| 264 | < | copystruct(hp->dirseg+j, hp->dirseg+(j-1)); | 
| 264 | > | *(hp->dirseg+j) = *(hp->dirseg+(j-1)); | 
| 265 |  | } | 
| 266 |  | do {                            /* check neighbors */ | 
| 267 |  | mindist = nbeams(hp);           /* find closest */ | 
| 283 |  | hp->dirseg[minpos].n - hp->dirseg[j].s; | 
| 284 |  | hp->dirty--; | 
| 285 |  | while (++j < hp->dirty)         /* close the gap */ | 
| 286 | < | copystruct(hp->dirseg+j, hp->dirseg+(j+1)); | 
| 286 | > | *(hp->dirseg+j) = *(hp->dirseg+(j+1)); | 
| 287 |  | } while (mindist <= MINDIRSEL); | 
| 288 |  | } | 
| 289 |  |  | 
| 350 |  | } | 
| 351 |  |  | 
| 352 |  |  | 
| 353 | < | long | 
| 353 | > | off_t | 
| 354 |  | hdfilen(fd)             /* return file length for fd */ | 
| 355 |  | int     fd; | 
| 356 |  | { | 
| 357 | < | long    fpos, flen; | 
| 357 | > | off_t   fpos, flen; | 
| 358 |  |  | 
| 359 |  | if (fd < 0) | 
| 360 |  | return(-1); | 
| 361 |  | if (fd >= nhdfragls || !hdfragl[fd].nlinks) { | 
| 362 | < | if ((fpos = lseek(fd, 0L, 1)) < 0) | 
| 362 | > | if ((fpos = lseek(fd, (off_t)0, 1)) < 0) | 
| 363 |  | return(-1); | 
| 364 | < | flen = lseek(fd, 0L, 2); | 
| 364 | > | flen = lseek(fd, (off_t)0, 2); | 
| 365 |  | lseek(fd, fpos, 0); | 
| 366 |  | return(flen); | 
| 367 |  | } | 
| 369 |  | } | 
| 370 |  |  | 
| 371 |  |  | 
| 372 | < | long | 
| 372 | > | off_t | 
| 373 |  | hdfiluse(fd, all)       /* compute file usage (in bytes) */ | 
| 374 |  | int     fd;                     /* open file descriptor to check */ | 
| 375 |  | int     all;                    /* include overhead and unflushed data */ | 
| 376 |  | { | 
| 377 | < | long    total = 0; | 
| 377 | > | off_t   total = 0; | 
| 378 |  | register int    i, j; | 
| 379 |  |  | 
| 380 |  | for (j = 0; hdlist[j] != NULL; j++) { | 
| 433 |  | hdfreefrag(hp, i);              /* relinquish old fragment */ | 
| 434 |  | p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; | 
| 435 |  | hp->bl[i]->nrm += nr;                   /* update in-core structure */ | 
| 436 | < | bzero((char *)p, nr*sizeof(RAYVAL)); | 
| 436 | > | memset((void *)p, '\0', nr*sizeof(RAYVAL)); | 
| 437 |  | blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ | 
| 438 |  | return(p);                              /* point to new rays */ | 
| 439 |  | } | 
| 473 |  | hdfilord(hb1, hb2)      /* order beams for quick loading */ | 
| 474 |  | register HDBEAMI        *hb1, *hb2; | 
| 475 |  | { | 
| 476 | < | register long   c; | 
| 476 | > | register off_t  c; | 
| 477 |  | /* residents go first */ | 
| 478 |  | if (hb2->h->bl[hb2->b] != NULL) | 
| 479 |  | return(hb1->h->bl[hb1->b] == NULL); | 
| 480 |  | if (hb1->h->bl[hb1->b] != NULL) | 
| 481 |  | return(-1); | 
| 482 |  | /* otherwise sort by file descriptor */ | 
| 483 | < | if ((c = hb1->h->fd - hb2->h->fd)) | 
| 484 | < | return(c); | 
| 483 | > | if (hb1->h->fd != hb2->h->fd) | 
| 484 | > | return(hb1->h->fd - hb2->h->fd); | 
| 485 |  | /* then by position in file */ | 
| 486 |  | c = hb1->h->bi[hb1->b].fo - hb2->h->bi[hb2->b].fo; | 
| 487 |  | return(c > 0 ? 1 : c < 0 ? -1 : 0); | 
| 491 |  | hdloadbeams(hb, n, bf)  /* load a list of beams in optimal order */ | 
| 492 |  | register HDBEAMI        *hb;    /* list gets sorted by hdfilord() */ | 
| 493 |  | int     n;                      /* list length */ | 
| 494 | < | int     (*bf)();                /* callback function (optional) */ | 
| 494 | > | void    (*bf)();                /* callback function (optional) */ | 
| 495 |  | { | 
| 496 |  | unsigned        origcachesize, memuse; | 
| 497 |  | int     bytesloaded, needbytes, bytes2free; | 
| 503 |  | if (hb[i].h==NULL || hb[i].b<1 | hb[i].b>nbeams(hb[i].h)) | 
| 504 |  | error(CONSISTENCY, "bad beam in hdloadbeams"); | 
| 505 |  | /* sort list for optimal access */ | 
| 506 | < | qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); | 
| 506 | > | qsort((void *)hb, n, sizeof(HDBEAMI), hdfilord); | 
| 507 |  | bytesloaded = 0;                /* run through loaded beams */ | 
| 508 |  | for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { | 
| 509 |  | bp->tick = hdclock;     /* preempt swap */ | 
| 547 |  | DCHECK(hp->fd < 0 | hp->fd >= nhdfragls || !hdfragl[hp->fd].nlinks, | 
| 548 |  | CONSISTENCY, "bad file descriptor in hdfreefrag"); | 
| 549 |  | f = &hdfragl[hp->fd]; | 
| 550 | + | if (!f->writable) | 
| 551 | + | return(0); | 
| 552 |  | if (f->nfrags % FRAGBLK == 0) { /* delete empty remnants */ | 
| 553 |  | for (j = k = 0; k < f->nfrags; j++, k++) { | 
| 554 |  | while (f->fi[k].nrd == 0) | 
| 555 |  | if (++k >= f->nfrags) | 
| 556 |  | goto endloop; | 
| 557 |  | if (k > j) | 
| 558 | < | copystruct(f->fi+j, f->fi+k); | 
| 558 | > | *(f->fi+j) = *(f->fi+k); | 
| 559 |  | } | 
| 560 |  | endloop: | 
| 561 |  | f->nfrags = j; | 
| 573 |  | if (f->fi == NULL) | 
| 574 |  | newp = (BEAMI *)malloc((j+FRAGBLK)*sizeof(BEAMI)); | 
| 575 |  | else | 
| 576 | < | newp = (BEAMI *)realloc((char *)f->fi, | 
| 576 | > | newp = (BEAMI *)realloc((void *)f->fi, | 
| 577 |  | (j+FRAGBLK)*sizeof(BEAMI)); | 
| 578 |  | if (newp == NULL) { | 
| 579 |  | f->nfrags--;    /* graceful failure */ | 
| 587 |  | f->fi[j].nrd = bi->nrd; | 
| 588 |  | break; | 
| 589 |  | } | 
| 590 | < | copystruct(f->fi+j, f->fi+(j-1)); | 
| 590 | > | *(f->fi+j) = *(f->fi+(j-1)); | 
| 591 |  | } | 
| 592 |  | /* coalesce adjacent fragments */ | 
| 593 |  | /* successors never empty */ | 
| 606 |  | } | 
| 607 |  | biglob(hp)->nrd -= bi->nrd;             /* tell fragment it's free */ | 
| 608 |  | bi->nrd = 0; | 
| 609 | < | bi->fo = 0L; | 
| 609 | > | bi->fo = 0; | 
| 610 | > | hdmarkdirty(hp, i);                     /* assume we'll reallocate */ | 
| 611 |  | return(1); | 
| 612 |  | } | 
| 613 |  |  | 
| 616 |  | hdfragOK(fd, listlen, listsiz)  /* get fragment list status for file */ | 
| 617 |  | int     fd; | 
| 618 |  | int     *listlen; | 
| 619 | < | register int4   *listsiz; | 
| 619 | > | register int32  *listsiz; | 
| 620 |  | { | 
| 621 |  | register struct fraglist        *f; | 
| 622 |  | register int    i; | 
| 636 |  | } | 
| 637 |  |  | 
| 638 |  |  | 
| 639 | < | long | 
| 639 | > | off_t | 
| 640 |  | hdallocfrag(fd, nrays)          /* allocate a file fragment */ | 
| 641 |  | int     fd; | 
| 642 | < | unsigned int4   nrays; | 
| 642 | > | uint32  nrays; | 
| 643 |  | { | 
| 644 |  | register struct fraglist        *f; | 
| 645 |  | register int    j; | 
| 646 | < | long    nfo; | 
| 646 | > | off_t   nfo; | 
| 647 |  |  | 
| 648 |  | if (nrays == 0) | 
| 649 |  | return(-1L); | 
| 670 |  | register HOLO   *hp; | 
| 671 |  | register int    i; | 
| 672 |  | { | 
| 673 | < | unsigned int4   nrays; | 
| 673 | > | int     fragfreed; | 
| 674 | > | uint32  nrays; | 
| 675 |  | unsigned int    n; | 
| 676 | < | long    nfo; | 
| 676 | > | off_t   nfo; | 
| 677 |  | /* check file status */ | 
| 678 | < | if (hdfragl[hp->fd].writerr) | 
| 679 | < | return(-1); | 
| 678 | > | if (hdfragl[hp->fd].writable <= 0) | 
| 679 | > | return(hdfragl[hp->fd].writable); | 
| 680 |  | DCHECK(i < 1 | i > nbeams(hp), | 
| 681 |  | CONSISTENCY, "bad beam index in hdsyncbeam"); | 
| 682 |  | /* is current fragment OK? */ | 
| 683 |  | if (hp->bl[i] == NULL || (nrays = hp->bl[i]->nrm) == hp->bi[i].nrd) | 
| 684 |  | return(0); | 
| 685 | < | if (hdfragflags&FF_WRITE && hp->bi[i].nrd) | 
| 686 | < | hdfreefrag(hp, i);      /* relinquish old fragment */ | 
| 685 | > | /* relinquish old fragment? */ | 
| 686 | > | fragfreed = hdfragflags&FF_WRITE && hp->bi[i].nrd && hdfreefrag(hp,i); | 
| 687 |  | if (nrays) {                    /* get and write new fragment */ | 
| 688 |  | nfo = hdallocfrag(hp->fd, nrays); | 
| 689 |  | errno = 0; | 
| 691 |  | error(SYSTEM, "cannot seek on holodeck file"); | 
| 692 |  | n = hp->bl[i]->nrm * sizeof(RAYVAL); | 
| 693 |  | if (write(hp->fd, (char *)hdbray(hp->bl[i]), n) != n) { | 
| 694 | < | hdfragl[hp->fd].writerr++; | 
| 694 | > | hdfragl[hp->fd].writable = -1; | 
| 695 |  | hdsync(NULL, 0);        /* sync directories */ | 
| 696 |  | error(SYSTEM, "write error in hdsyncbeam"); | 
| 697 |  | } | 
| 698 |  | hp->bi[i].fo = nfo; | 
| 699 |  | } else | 
| 700 | < | hp->bi[i].fo = 0L; | 
| 700 | > | hp->bi[i].fo = 0; | 
| 701 |  | biglob(hp)->nrd += nrays - hp->bi[i].nrd; | 
| 702 |  | hp->bi[i].nrd = nrays; | 
| 703 | < | markdirty(hp, i);               /* section directory now out of date */ | 
| 703 | > | if (!fragfreed) | 
| 704 | > | hdmarkdirty(hp, i);             /* need to flag dir. ent. */ | 
| 705 |  | return(1); | 
| 706 |  | } | 
| 707 |  |  | 
| 719 |  | nchanged += hdfreebeam(hdlist[i], 0); | 
| 720 |  | return(nchanged); | 
| 721 |  | } | 
| 722 | < | if (hdfragl[hp->fd].writerr)    /* check for file error */ | 
| 722 | > | if (hdfragl[hp->fd].writable < 0)       /* check for file error */ | 
| 723 |  | return(0); | 
| 724 |  | if (i == 0) {                   /* clear entire holodeck */ | 
| 725 | + | if (blglob(hp)->nrm == 0) | 
| 726 | + | return(0);              /* already clear */ | 
| 727 |  | nchanged = 0; | 
| 728 |  | for (i = nbeams(hp); i > 0; i--) | 
| 729 |  | if (hp->bl[i] != NULL) | 
| 730 |  | nchanged += hdfreebeam(hp, i); | 
| 731 | + | DCHECK(blglob(hp)->nrm != 0, | 
| 732 | + | CONSISTENCY, "bad beam count in hdfreebeam"); | 
| 733 |  | return(nchanged); | 
| 734 |  | } | 
| 735 |  | DCHECK(i < 1 | i > nbeams(hp), | 
| 741 |  | if (nchanged) | 
| 742 |  | hdsyncbeam(hp, i);              /* write new fragment */ | 
| 743 |  | blglob(hp)->nrm -= hp->bl[i]->nrm; | 
| 744 | < | free((char *)hp->bl[i]);                /* free memory */ | 
| 744 | > | free((void *)hp->bl[i]);                /* free memory */ | 
| 745 |  | hp->bl[i] = NULL; | 
| 746 |  | return(nchanged); | 
| 747 |  | } | 
| 761 |  | return(nchanged); | 
| 762 |  | } | 
| 763 |  | if (i == 0) {                   /* clobber entire holodeck */ | 
| 764 | + | if (biglob(hp)->nrd == 0 & blglob(hp)->nrm == 0) | 
| 765 | + | return(0);              /* already empty */ | 
| 766 |  | nchanged = 0; | 
| 767 | + | nchanged = 0; | 
| 768 |  | for (i = nbeams(hp); i > 0; i--) | 
| 769 |  | if (hp->bi[i].nrd > 0 || hp->bl[i] != NULL) | 
| 770 |  | nchanged += hdkillbeam(hp, i); | 
| 772 |  | CONSISTENCY, "bad beam count in hdkillbeam"); | 
| 773 |  | return(nchanged); | 
| 774 |  | } | 
| 775 | < | DCHECK(i < 1 | i > nbeams(hp), | 
| 776 | < | CONSISTENCY, "bad beam index to hdkillbeam"); | 
| 775 | > | DCHECK(i < 1 | i > nbeams(hp), CONSISTENCY, | 
| 776 | > | "bad beam index to hdkillbeam"); | 
| 777 | > | DCHECK(!hdfragl[hp->fd].writable, CONSISTENCY, | 
| 778 | > | "hdkillbeam called on read-only holodeck"); | 
| 779 |  | if (hp->bl[i] != NULL) {        /* free memory */ | 
| 780 |  | blglob(hp)->nrm -= nchanged = hp->bl[i]->nrm; | 
| 781 | < | free((char *)hp->bl[i]); | 
| 781 | > | free((void *)hp->bl[i]); | 
| 782 | > | hp->bl[i] = NULL; | 
| 783 |  | } else | 
| 784 |  | nchanged = hp->bi[i].nrd; | 
| 785 | < | if (hp->bi[i].nrd) { | 
| 786 | < | if (hdfragflags&FF_KILL) | 
| 787 | < | hdfreefrag(hp, i); | 
| 788 | < | biglob(hp)->nrd -= hp->bi[i].nrd; | 
| 789 | < | hp->bi[i].nrd = 0;      /* make sure it's gone */ | 
| 729 | < | hp->bi[i].fo = 0L; | 
| 785 | > | if (hp->bi[i].nrd && !(hdfragflags&FF_KILL && hdfreefrag(hp,i))) { | 
| 786 | > | biglob(hp)->nrd -= hp->bi[i].nrd;       /* free failed */ | 
| 787 | > | hp->bi[i].nrd = 0; | 
| 788 | > | hp->bi[i].fo = 0; | 
| 789 | > | hdmarkdirty(hp, i); | 
| 790 |  | } | 
| 731 | – | hp->bl[i] = NULL; | 
| 791 |  | return(nchanged); | 
| 792 |  | } | 
| 793 |  |  | 
| 817 |  | hb[j].b = i; | 
| 818 |  | break; | 
| 819 |  | } | 
| 820 | < | copystruct(hb+j, hb+(j-1)); | 
| 820 | > | *(hb+j) = *(hb+(j-1)); | 
| 821 |  | } | 
| 822 |  | } | 
| 823 |  | return(nents);                  /* return new list length */ | 
| 876 |  | if (hp == NULL) {               /* NULL means clean up everything */ | 
| 877 |  | while (hdlist[0] != NULL) | 
| 878 |  | hddone(hdlist[0]); | 
| 879 | < | free((char *)hdfragl); | 
| 879 | > | free((void *)hdfragl); | 
| 880 |  | hdfragl = NULL; nhdfragls = 0; | 
| 881 |  | return; | 
| 882 |  | } | 
| 883 |  | /* flush all data and free memory */ | 
| 884 | < | hdfreebeam(hp, 0); | 
| 826 | < | hdsync(hp, 0); | 
| 884 | > | hdflush(hp); | 
| 885 |  | /* release fragment resources */ | 
| 886 |  | hdrelease(hp->fd); | 
| 887 |  | /* remove hp from active list */ | 
| 891 |  | i++; | 
| 892 |  | break; | 
| 893 |  | } | 
| 894 | < | free((char *)hp->bl);           /* free beam list */ | 
| 895 | < | free((char *)hp);               /* free holodeck struct */ | 
| 894 | > | free((void *)hp->bl);           /* free beam list */ | 
| 895 | > | free((void *)hp);               /* free holodeck struct */ | 
| 896 |  | } |