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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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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* Optimize holodeck for quick access. |
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* |
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* 11/4/98 Greg Ward Larson |
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*/ |
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#include <signal.h> |
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#include <string.h> |
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|
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#include "rtprocess.h" /* getpid() */ |
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#include "holo.h" |
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#ifndef BKBSIZE |
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#define BKBSIZE 64 /* beam clump size (kilobytes) */ |
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#define BKBSIZE 256 /* beam clump size (kilobytes) */ |
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#endif |
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char *progname; |
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char tempfile[128]; |
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int dupchecking = 0; |
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|
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extern long rhinitcopy(); |
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|
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int argc; |
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char *argv[]; |
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{ |
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char nambuf[128]; |
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char *inpname, *outname; |
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int hdfd[2]; |
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long nextipos, lastopos, thisopos; |
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progname = argv[0]; |
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if (argc < 2 | argc > 3) { |
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fprintf(stderr, "Usage: %s input.hdk [output.hdk]\n", progname); |
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argv++; argc--; /* duplicate checking flag? */ |
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if (argc > 1 && !strcmp(argv[0], "-u")) { |
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dupchecking++; |
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argv++; argc--; |
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} |
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if (argc < 1 | argc > 2) { |
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fprintf(stderr, "Usage: %s [-u] input.hdk [output.hdk]\n", |
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progname); |
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exit(1); |
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} |
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inpname = argv[1]; |
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if (argc == 3) /* use given output file */ |
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outname = argv[2]; |
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else { /* else create temporary file */ |
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strcpy(nambuf, inpname); |
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if ((outname = strrchr(nambuf, '/')) != NULL) |
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inpname = argv[0]; /* get input file */ |
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argv++; argc--; |
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if (argc == 1) /* use given output file */ |
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outname = argv[0]; |
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else { /* else use temporary file */ |
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if (access(inpname, R_OK|W_OK) < 0) { /* check permissions */ |
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sprintf(errmsg, "cannot access \"%s\"", inpname); |
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error(SYSTEM, errmsg); |
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} |
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strcpy(tempfile, inpname); |
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if ((outname = strrchr(tempfile, '/')) != NULL) |
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outname++; |
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else |
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outname = nambuf; |
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outname = tempfile; |
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sprintf(outname, "rho%d.hdk", getpid()); |
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outname = nambuf; |
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outname = tempfile; |
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} |
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/* copy holodeck file header */ |
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nextipos = rhinitcopy(hdfd, inpname, outname); |
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lastopos = 0L; /* copy sections one by one */ |
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while (nextipos != 0L) { |
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/* set input position; get next */ |
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lseek(hdfd[0], nextipos, 0); |
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lseek(hdfd[0], (off_t)nextipos, 0); |
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read(hdfd[0], (char *)&nextipos, sizeof(nextipos)); |
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/* get output position; set last */ |
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thisopos = lseek(hdfd[1], 0L, 2); |
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thisopos = lseek(hdfd[1], (off_t)0, 2); |
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if (lastopos > 0L) { |
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lseek(hdfd[1], lastopos, 0); |
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lseek(hdfd[1], (off_t)lastopos, 0); |
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write(hdfd[1], (char *)&thisopos, sizeof(thisopos)); |
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lseek(hdfd[1], 0L, 2); |
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lseek(hdfd[1], (off_t)0, 2); |
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} |
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lastopos = thisopos; |
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thisopos = 0L; /* write place holder */ |
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/* clean up */ |
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close(hdfd[0]); |
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close(hdfd[1]); |
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if (argc == 2 && rename(outname, inpname) < 0) { |
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if (outname == tempfile && rename(outname, inpname) < 0) { |
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sprintf(errmsg, "cannot rename \"%s\" to \"%s\"", |
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outname, inpname); |
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error(SYSTEM, errmsg); |
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sprintf(errmsg, "cannot open \"%s\" for reading", infn); |
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error(SYSTEM, errmsg); |
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} |
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if (access(outfn, F_OK) == 0) { |
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sprintf(errmsg, "output file \"%s\" already exists!", outfn); |
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error(USER, errmsg); |
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} |
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if ((outfp = fopen(outfn, "w+")) == NULL) { |
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sprintf(errmsg, "cannot open \"%s\" for writing", outfn); |
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error(SYSTEM, errmsg); |
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} |
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/* set up signal handling */ |
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if (signal(SIGINT, quit) == SIG_IGN) signal(SIGINT, SIG_IGN); |
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if (signal(SIGHUP, quit) == SIG_IGN) signal(SIGHUP, SIG_IGN); |
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if (signal(SIGTERM, quit) == SIG_IGN) signal(SIGTERM, SIG_IGN); |
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#ifdef SIGXCPU |
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if (signal(SIGXCPU, quit) == SIG_IGN) signal(SIGXCPU, SIG_IGN); |
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if (signal(SIGXFSZ, quit) == SIG_IGN) signal(SIGXFSZ, SIG_IGN); |
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#endif |
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/* copy and verify header */ |
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if (checkheader(infp, HOLOFMT, outfp) < 0 || |
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getw(infp) != HOLOMAGIC) |
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if (checkheader(infp, HOLOFMT, outfp) < 0 || getw(infp) != HOLOMAGIC) |
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error(USER, "input not in holodeck format"); |
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fputformat(HOLOFMT, outfp); |
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fputc('\n', outfp); |
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fclose(infp); |
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if (fclose(outfp) == EOF) |
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error(SYSTEM, "file flushing error in rhinitcopy"); |
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/* we flush everything manually */ |
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hdcachesize = 0; |
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/* check cache size */ |
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if (BKBSIZE*1024*1.5 > hdcachesize) |
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hdcachesize = BKBSIZE*1024*1.5; |
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/* return input position */ |
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return(ifpos); |
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} |
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|
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gcshifti(gc, ia, di, hp) /* shift cell row or column */ |
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register GCOORD *gc; |
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int ia, di; |
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register HOLO *hp; |
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int |
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nuniq(rva, n) /* sort unique rays to front of beam list */ |
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register RAYVAL *rva; |
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int n; |
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{ |
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int nw; |
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register int i, j; |
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RAYVAL rtmp; |
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|
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if (di > 0) { |
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if (++gc->i[ia] >= hp->grid[((gc->w>>1)+1+ia)%3]) { |
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nw = ((gc->w&~1) + (ia<<1) + 3) % 6; |
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gc->i[ia] = gc->i[1-ia]; |
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gc->i[1-ia] = gc->w&1 ? hp->grid[((nw>>1)+2-ia)%3]-1 : 0; |
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gc->w = nw; |
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} |
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} else if (di < 0) { |
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if (--gc->i[ia] < 0) { |
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nw = ((gc->w&~1) + (ia<<1) + 2) % 6; |
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gc->i[ia] = gc->i[1-ia]; |
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gc->i[1-ia] = gc->w&1 ? hp->grid[((nw>>1)+2-ia)%3]-1 : 0; |
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gc->w = nw; |
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} |
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} |
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for (j = 0; j < n; j++) |
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for (i = j+1; i < n; i++) |
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if ( rva[i].d == rva[j].d && |
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rva[i].r[0][0]==rva[j].r[0][0] && |
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rva[i].r[0][1]==rva[j].r[0][1] && |
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rva[i].r[1][0]==rva[j].r[1][0] && |
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rva[i].r[1][1]==rva[j].r[1][1] ) { |
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n--; /* swap duplicate with end */ |
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rtmp = *(rva+n); |
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*(rva+n) = *(rva+i); |
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*(rva+i) = rtmp; |
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i--; /* recheck one we swapped */ |
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} |
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return(n); |
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} |
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mkneighgrid(ng, hp, gc) /* compute neighborhood for grid cell */ |
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GCOORD ng[3*3]; |
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HOLO *hp; |
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GCOORD *gc; |
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> |
static BEAMI *beamdir; |
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> |
|
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static int |
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bpcmp(b1p, b2p) /* compare beam positions on disk */ |
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int *b1p, *b2p; |
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{ |
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GCOORD gci0; |
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int i, j; |
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register off_t pdif = beamdir[*b1p].fo - beamdir[*b2p].fo; |
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|
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< |
for (i = 3; i--; ) { |
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copystruct(&gci0, gc); |
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gcshifti(&gci0, 0, i-1, hp); |
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for (j = 3; j--; ) { |
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copystruct(ng+(3*i+j), &gci0); |
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gcshifti(ng+(3*i+j), 1, j-1, hp); |
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} |
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} |
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> |
if (pdif < 0L) return(-1); |
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> |
return(pdif > 0L); |
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} |
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static HOLO *hout; |
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|
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< |
int bneighlist[9*9-1]; |
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int bneighrem; |
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< |
|
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< |
#define nextneigh() (bneighrem<=0 ? 0 : bneighlist[--bneighrem]) |
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< |
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< |
int |
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< |
firstneigh(hp, b) /* initialize neighbor list and return first */ |
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static int |
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> |
xferclump(hp, bq, nb) /* transfer the given clump to hout and free */ |
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HOLO *hp; |
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< |
int b; |
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> |
int *bq, nb; |
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{ |
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< |
GCOORD wg0[9], wg1[9], bgc[2]; |
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< |
int i, j; |
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> |
register int i; |
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> |
register BEAM *bp; |
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> |
int n; |
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|
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< |
hdbcoord(bgc, hp, b); |
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< |
mkneighgrid(wg0, hp, bgc); |
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< |
mkneighgrid(wg1, hp, bgc+1); |
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< |
bneighrem = 0; |
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< |
for (i = 9; i--; ) |
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< |
for (j = 9; j--; ) { |
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< |
if (i == 4 & j == 4) |
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< |
continue; |
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< |
copystruct(bgc, wg0+i); |
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< |
copystruct(bgc+1, wg1+j); |
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< |
bneighlist[bneighrem++] = hdbindex(hp, bgc); |
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< |
} |
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< |
return(nextneigh()); |
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> |
beamdir = hp->bi; /* sort based on file position */ |
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> |
qsort((void *)bq, nb, sizeof(*bq), bpcmp); |
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> |
/* transfer and free each beam */ |
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> |
for (i = 0; i < nb; i++) { |
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> |
bp = hdgetbeam(hp, bq[i]); |
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> |
DCHECK(bp==NULL, CONSISTENCY, "empty beam in xferclump"); |
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> |
n = dupchecking ? nuniq(hdbray(bp),bp->nrm) : bp->nrm; |
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> |
memcpy((void *)hdnewrays(hout,bq[i],n),(void *)hdbray(bp), |
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> |
n*sizeof(RAYVAL)); |
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> |
hdfreebeam(hp, bq[i]); |
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> |
} |
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> |
hdfreebeam(hout, 0); /* write & free clump */ |
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return(0); |
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} |
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|
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|
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copysect(ifd, ofd) /* copy holodeck section from ifd to ofd */ |
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int ifd, ofd; |
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{ |
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< |
#define beamdone(b) (!hinp->bi[b].nrd || bnrays(hout,b)) |
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< |
static short primes[] = {9431,6803,4177,2659,1609,887,587,251,47,1}; |
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< |
register HOLO *hinp, *hout; |
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< |
register BEAM *bp; |
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< |
int *bqueue; |
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< |
int bqlen; |
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< |
int4 bqtotal; |
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< |
int bc, bci, bqc, bnc, myprime; |
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< |
register int i; |
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> |
HOLO *hinp; |
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/* load input section directory */ |
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hinp = hdinit(ifd, NULL); |
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/* create output section directory */ |
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hout = hdinit(ofd, (HDGRID *)hinp); |
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< |
/* allocate beam queue */ |
| 217 |
< |
if ((bqueue = (int *)malloc(nbeams(hinp)*sizeof(int))) == NULL) |
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< |
error(SYSTEM, "out of memory in copysect"); |
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< |
/* pick a good prime step size */ |
| 214 |
< |
for (i = 0; primes[i]<<5 >= nbeams(hinp); i++) |
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< |
; |
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< |
while ((myprime = primes[i++]) > 1) |
| 217 |
< |
if (nbeams(hinp) % myprime) |
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< |
break; |
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< |
/* add each input beam and neighbors */ |
| 220 |
< |
for (bc = bci = nbeams(hinp); bc > 0; bc--, |
| 221 |
< |
bci += bci>myprime ? -myprime : nbeams(hinp)-myprime) { |
| 222 |
< |
if (beamdone(bci)) |
| 223 |
< |
continue; |
| 224 |
< |
bqueue[0] = bci; /* initialize queue */ |
| 225 |
< |
bqlen = 1; |
| 226 |
< |
bqtotal = bnrays(hinp, bci); |
| 227 |
< |
/* run through growing queue */ |
| 228 |
< |
for (bqc = 0; bqc < bqlen; bqc++) { |
| 229 |
< |
/* transfer the beam */ |
| 230 |
< |
bp = hdgetbeam(hinp, bqueue[bqc]); |
| 231 |
< |
bcopy((char *)hdbray(bp), |
| 232 |
< |
(char *)hdnewrays(hout,bqueue[bqc],bp->nrm), |
| 233 |
< |
bp->nrm*sizeof(RAYVAL)); |
| 234 |
< |
hdfreebeam(hinp, bqueue[bqc]); |
| 235 |
< |
/* check queue size */ |
| 236 |
< |
if (bqtotal >= BKBSIZE*1024/sizeof(RAYVAL)) |
| 237 |
< |
continue; |
| 238 |
< |
/* add neighbors to queue */ |
| 239 |
< |
for (bnc = firstneigh(hinp,bqueue[bqc]); bnc > 0; |
| 240 |
< |
bnc = nextneigh()) { |
| 241 |
< |
if (beamdone(bnc)) /* see if valid */ |
| 242 |
< |
continue; |
| 243 |
< |
for (i = bqlen; i--; ) |
| 244 |
< |
if (bqueue[i] == bnc) break; |
| 245 |
< |
if (i >= 0) |
| 246 |
< |
continue; |
| 247 |
< |
bqueue[bqlen++] = bnc; /* add it */ |
| 248 |
< |
bqtotal += bnrays(hinp, bnc); |
| 249 |
< |
if (bqtotal >= BKBSIZE*1024/sizeof(RAYVAL)) |
| 250 |
< |
break; /* queue full */ |
| 251 |
< |
} |
| 252 |
< |
} |
| 253 |
< |
hdfreebeam(hout, 0); /* flush output block */ |
| 254 |
< |
} |
| 255 |
< |
/* we're done -- clean up */ |
| 256 |
< |
free((char *)bqueue); |
| 216 |
> |
/* clump the beams */ |
| 217 |
> |
clumpbeams(hinp, 0, BKBSIZE*1024, xferclump); |
| 218 |
> |
/* clean up */ |
| 219 |
|
hddone(hinp); |
| 220 |
|
hddone(hout); |
| 259 |
– |
#undef beamdone |
| 221 |
|
} |
| 222 |
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|
| 223 |
|
|
| 224 |
+ |
void |
| 225 |
|
eputs(s) /* put error message to stderr */ |
| 226 |
|
register char *s; |
| 227 |
|
{ |
| 241 |
|
} |
| 242 |
|
|
| 243 |
|
|
| 244 |
+ |
void |
| 245 |
|
quit(code) /* exit the program gracefully */ |
| 246 |
|
int code; |
| 247 |
|
{ |
| 248 |
< |
hdsync(NULL, 1); /* write out any buffered data */ |
| 248 |
> |
if (tempfile[0]) |
| 249 |
> |
unlink(tempfile); |
| 250 |
|
exit(code); |
| 251 |
|
} |
