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* 9/30/97 GWLarson |
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*/ |
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#include "copyright.h" |
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#include <string.h> |
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#include "holo.h" |
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#ifndef CACHESIZE |
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register HOLO *hp; |
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int n; |
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/* copy grid to temporary header */ |
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< |
bcopy((void *)hproto, (void *)&hdhead, sizeof(HDGRID)); |
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memcpy((void *)&hdhead, (void *)hproto, sizeof(HDGRID)); |
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/* compute grid vectors and sizes */ |
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hdcompgrid(&hdhead); |
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/* allocate header with directory */ |
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if ((hp = (HOLO *)malloc(n)) == NULL) |
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return(NULL); |
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/* copy header information */ |
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copystruct(hp, &hdhead); |
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*hp = hdhead; |
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/* allocate and clear beam list */ |
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hp->bl = (BEAM **)malloc((nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
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if (hp->bl == NULL) { |
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free((void *)hp); |
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return(NULL); |
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} |
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< |
bzero((void *)hp->bl, (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
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> |
memset((void *)hp->bl, '\0', (nbeams(hp)+1)*sizeof(BEAM *)+sizeof(BEAM)); |
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hp->bl[0] = (BEAM *)(hp->bl+nbeams(hp)+1); /* set blglob(hp) */ |
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hp->fd = -1; |
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hp->dirty = 0; |
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hp->priv = NULL; |
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/* clear beam directory */ |
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bzero((void *)hp->bi, (nbeams(hp)+1)*sizeof(BEAMI)); |
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memset((void *)hp->bi, '\0', (nbeams(hp)+1)*sizeof(BEAMI)); |
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return(hp); /* all is well */ |
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} |
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if (fd >= nhdfragls) { |
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hdfragl = (struct fraglist *)hdrealloc((char *)hdfragl, |
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(fd+1)*sizeof(struct fraglist), "hdattach"); |
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< |
bzero((void *)(hdfragl+nhdfragls), |
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(fd+1-nhdfragls)*sizeof(struct fraglist)); |
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memset((void *)(hdfragl+nhdfragls), |
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'\0', (fd+1-nhdfragls)*sizeof(struct fraglist)); |
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nhdfragls = fd+1; |
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} |
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hdfragl[fd].nlinks++; |
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hp->dirseg[j].n = 1; |
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break; |
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} |
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< |
copystruct(hp->dirseg+j, hp->dirseg+(j-1)); |
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*(hp->dirseg+j) = *(hp->dirseg+(j-1)); |
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} |
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do { /* check neighbors */ |
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mindist = nbeams(hp); /* find closest */ |
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hp->dirseg[minpos].n - hp->dirseg[j].s; |
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hp->dirty--; |
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while (++j < hp->dirty) /* close the gap */ |
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copystruct(hp->dirseg+j, hp->dirseg+(j+1)); |
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*(hp->dirseg+j) = *(hp->dirseg+(j+1)); |
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} while (mindist <= MINDIRSEL); |
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} |
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hdfreefrag(hp, i); /* relinquish old fragment */ |
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p = hdbray(hp->bl[i]) + hp->bl[i]->nrm; |
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hp->bl[i]->nrm += nr; /* update in-core structure */ |
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bzero((void *)p, nr*sizeof(RAYVAL)); |
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memset((void *)p, '\0', nr*sizeof(RAYVAL)); |
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blglob(hp)->tick = hp->bl[i]->tick = hdclock++; /* update LRU clock */ |
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return(p); /* point to new rays */ |
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} |
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hdloadbeams(hb, n, bf) /* load a list of beams in optimal order */ |
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register HDBEAMI *hb; /* list gets sorted by hdfilord() */ |
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int n; /* list length */ |
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int (*bf)(); /* callback function (optional) */ |
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void (*bf)(); /* callback function (optional) */ |
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{ |
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unsigned origcachesize, memuse; |
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int bytesloaded, needbytes, bytes2free; |
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if (++k >= f->nfrags) |
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goto endloop; |
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if (k > j) |
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< |
copystruct(f->fi+j, f->fi+k); |
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*(f->fi+j) = *(f->fi+k); |
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} |
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endloop: |
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f->nfrags = j; |
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f->fi[j].nrd = bi->nrd; |
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break; |
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} |
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< |
copystruct(f->fi+j, f->fi+(j-1)); |
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*(f->fi+j) = *(f->fi+(j-1)); |
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} |
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/* coalesce adjacent fragments */ |
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/* successors never empty */ |
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hb[j].b = i; |
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break; |
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} |
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< |
copystruct(hb+j, hb+(j-1)); |
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*(hb+j) = *(hb+(j-1)); |
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} |
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} |
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return(nents); /* return new list length */ |