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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#define CACHESIZE 16 /* default cache size (Mbytes, 0==inf) */ |
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#endif |
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#ifndef FREEBEAMS |
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#define FREEBEAMS 512 /* maximum beams to free at a time */ |
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#define FREEBEAMS 1024 /* maximum beams to free at a time */ |
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#endif |
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#ifndef PCTFREE |
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#define PCTFREE 20 /* maximum fraction to free (%) */ |
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#define PCTFREE 15 /* maximum fraction to free (%) */ |
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#endif |
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#ifndef MAXFRAG |
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#define MAXFRAG 32767 /* maximum fragments/file to track (0==inf) */ |
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int fd; /* corresponding file descriptor */ |
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HDGRID *hproto; /* holodeck section grid */ |
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{ |
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long rtrunc; |
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long fpos; |
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register HOLO *hp; |
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register int n; |
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error(SYSTEM, "failure loading holodeck directory"); |
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/* check that it's clean */ |
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if (hp->bi[nbeams(hp)].fo < 0) |
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error(USER, "dirty holodeck section"); |
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error(WARNING, "dirty holodeck section"); |
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} else { /* assume we're creating it */ |
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if ((hp = hdalloc(hproto)) == NULL) |
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goto memerr; |
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hdattach(fd); |
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/* check rays on disk */ |
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fpos = hdfilen(fd); |
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biglob(hp)->nrd = 0; |
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biglob(hp)->nrd = rtrunc = 0; |
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for (n = hproto == NULL ? nbeams(hp) : 0; n > 0; n--) |
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if (hp->bi[n].nrd) |
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if (hp->bi[n].fo + hp->bi[n].nrd > fpos) |
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hp->bi[n].nrd = 0; /* off end */ |
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else |
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if (hp->bi[n].fo + hp->bi[n].nrd > fpos) { |
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rtrunc += hp->bi[n].nrd; |
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hp->bi[n].nrd = 0; |
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} else |
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biglob(hp)->nrd += hp->bi[n].nrd; |
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if (rtrunc) { |
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sprintf(errmsg, "truncated section, %ld rays lost (%.1f%%)", |
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rtrunc, 100.*rtrunc/(rtrunc+biglob(hp)->nrd)); |
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error(WARNING, errmsg); |
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} |
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/* add to holodeck list */ |
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for (n = 0; n < HDMAX; n++) |
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if (hdlist[n] == NULL) { |
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int (*bf)(); /* callback function (optional) */ |
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{ |
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unsigned origcachesize, memuse; |
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register BEAM *bp; |
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int bytesloaded, needbytes, bytes2free; |
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register BEAM *bp; |
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register int i; |
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/* precheck consistency */ |
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for (i = n; i--; ) |
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qsort((char *)hb, n, sizeof(HDBEAMI), hdfilord); |
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bytesloaded = 0; /* run through loaded beams */ |
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for ( ; n && (bp = hb->h->bl[hb->b]) != NULL; n--, hb++) { |
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bp->tick = hdclock; /* preempt swap */ |
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bp->tick = hdclock; /* preempt swap */ |
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bytesloaded += bp->nrm; |
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if (bf != NULL) |
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(*bf)(bp, hb->h, hb->b); |
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(*bf)(bp, hb); |
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} |
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bytesloaded *= sizeof(RAYVAL); |
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if ((origcachesize = hdcachesize) > 0) { |
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} |
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for (i = 0; i < n; i++) |
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if ((bp = hdgetbeam(hb[i].h, hb[i].b)) != NULL && bf != NULL) |
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(*bf)(bp, hb[i].h, hb[i].b); |
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(*bf)(bp, hb+i); |
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hdcachesize = origcachesize; /* resume dynamic swapping */ |
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} |
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{ |
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register int i, j; |
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/* insert each beam from hp */ |
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for (i = nbeams(hp); i > 0; i--) { |
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for (i = 1; i <= nbeams(hp); i++) { |
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if (hp->bl[i] == NULL) /* check if loaded */ |
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continue; |
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#if 0 |
