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#include "standard.h" |
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#include <fcntl.h> |
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|
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#ifndef F_SETLKW |
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
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exit(1); |
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} |
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|
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#else |
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|
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#include <signal.h> |
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#include "color.h" |
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#include "view.h" |
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#include "resolu.h" |
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|
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#ifndef NFS |
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#define NFS 1 |
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#endif |
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/* set the following to 0 to forgo forking */ |
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#ifndef MAXFORK |
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#if NFS |
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#define MAXFORK 3 /* allotment of duped processes */ |
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#else |
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#define MAXFORK 0 |
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#endif |
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#endif |
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|
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/* rpict command */ |
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char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"}; |
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int rpargc = 9; |
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int outfd; |
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long scanorig; |
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int syncfd = -1; /* lock file descriptor */ |
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int nforked = 0; |
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|
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char *progname; |
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int verbose = 0; |
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case 'F': /* syncronization file */ |
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if (argv[i][2]) |
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break; |
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if ((syncfd = open(argv[++i], O_RDWR)) < 0) { |
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if ((syncfd = open(argv[++i], |
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O_RDWR|O_CREAT, 0666)) < 0) { |
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fprintf(stderr, "%s: cannot open\n", |
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argv[i]); |
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exit(1); |
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} |
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continue; |
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case 'z': /* z-file ist verbotten */ |
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fprintf(stderr, "%s: -z option not allowed\n", |
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argv[0]); |
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exit(1); |
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case 'o': /* output file */ |
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if (argv[i][2]) |
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break; |
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} |
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init(argc, argv); |
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rpiece(); |
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rval = cleanup(); |
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exit(rval); |
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exit(cleanup(0)); |
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} |
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|
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|
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} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
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if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
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goto filerr; |
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getheader(fp, NULL); /* skip header */ |
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if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
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getheader(fp, NULL, NULL); /* skip header */ |
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if (!fscnresolu(&hr, &vr, fp) || /* check resolution */ |
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hr != hres*hmult || vr != vres*vmult) { |
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fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
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progname, outfile); |
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scanorig = ftell(fp); /* record position of first scanline */ |
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if (fclose(fp) == -1) /* done with stream i/o */ |
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goto filerr; |
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#if NFS |
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sync(); /* flush NFS buffers */ |
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#endif |
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/* start rpict process */ |
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if (open_process(rpd, rpargv) <= 0) { |
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fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
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if (sscanf(buf, "%d %d", xp, yp) == 2) |
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return(1); |
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fprintf(stderr, "%s: input format error\n", progname); |
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exit(1); |
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exit(cleanup(1)); |
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} |
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|
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|
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int |
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cleanup() /* close rpict process and clean up */ |
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cleanup(rstat) /* close rpict process and clean up */ |
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int rstat; |
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{ |
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register int rpstat; |
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int status; |
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|
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free((char *)pbuf); |
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fclose(torp); |
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fclose(fromrp); |
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rpstat = close_process(rpd); |
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if (rpstat == -1) |
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rpstat = 0; |
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return(rpstat); |
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while (wait(&status) != -1) |
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if (rstat == 0) |
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rstat = status>>8 & 0xff; |
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return(rstat); |
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} |
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|
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|
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{ |
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VIEW pview; |
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int xorg, yorg; |
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|
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/* compute view parameters */ |
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copystruct(&pview, &ourview); |
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switch (ourview.type) { |
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case VT_PER: |
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pview.horiz = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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case VT_PAR: |
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case VT_ANG: |
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pview.horiz = ourview.horiz / hmult; |
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pview.vert = ourview.vert / vmult; |
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break; |
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case VT_HEM: |
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pview.horiz = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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default: |
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fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
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progname, ourview.type); |
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exit(cleanup(1)); |
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} |
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/* render each piece */ |
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while (nextpiece(&xorg, &yorg)) { |
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copystruct(&pview, &ourview); /* compute view for piece */ |
325 |
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switch (ourview.type) { |
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case VT_PER: |
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pview.horiz = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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case VT_PAR: |
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case VT_ANG: |
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pview.horiz = ourview.horiz / hmult; |
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pview.vert = ourview.vert / vmult; |
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break; |
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case VT_HEM: |
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pview.horiz = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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default: |
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fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
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progname, ourview.type); |
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exit(1); |
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} |
290 |
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pview.hoff += xorg - 0.5*(hmult-1); |
291 |
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pview.voff += yorg - 0.5*(vmult-1); |
324 |
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pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
325 |
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pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
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fputs(VIEWSTR, torp); |
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fprintview(&pview, torp); |
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putc('\n', torp); |
329 |
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fflush(torp); /* assign piece to rpict */ |
329 |
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fflush(torp); /* assigns piece to rpict */ |
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putpiece(xorg, yorg); /* place piece in output */ |
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if (verbose) { /* notify caller */ |
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printf("%d %d done\n", xorg, yorg); |
336 |
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} |
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|
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|
339 |
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int |
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putpiece(xpos, ypos) /* get next piece from rpict */ |
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int xpos, ypos; |
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{ |
343 |
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struct flock fls; |
344 |
+ |
int pid, status; |
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int hr, vr; |
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register int y; |
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/* check bounds */ |
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if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
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fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
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progname, xpos, ypos); |
351 |
< |
exit(1); |
351 |
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exit(cleanup(1)); |
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} |
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/* check header from rpict */ |
354 |
< |
getheader(fromrp, NULL); |
355 |
< |
if (fscnresolu(&hr, &vr, fromrp) < 0 || hr != hres || vr != vres) { |
354 |
> |
getheader(fromrp, NULL, NULL); |
355 |
> |
if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) { |
356 |
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fprintf(stderr, "%s: resolution mismatch from %s\n", |
357 |
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progname, rpargv[0]); |
358 |
< |
exit(1); |
358 |
> |
exit(cleanup(1)); |
359 |
|
} |
360 |
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/* load new piece into buffer */ |
361 |
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for (y = 0; y < vr; y++) |
362 |
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if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
363 |
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fprintf(stderr, "%s: read error from %s\n", |
364 |
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progname, rpargv[0]); |
365 |
< |
exit(1); |
365 |
> |
exit(cleanup(1)); |
366 |
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} |
367 |
< |
/* lock file section so NFS doesn't mess up */ |
368 |
< |
fls.l_whence = 0; |
367 |
> |
#if MAXFORK |
368 |
> |
/* fork so we don't slow rpict down */ |
369 |
> |
if ((pid = fork()) > 0) { |
370 |
> |
if (++nforked >= MAXFORK) { |
371 |
> |
wait(&status); /* reap a child */ |
372 |
> |
if (status) |
373 |
> |
exit(cleanup(status>>8 & 0xff)); |
374 |
> |
nforked--; |
375 |
> |
} |
376 |
> |
return(pid); |
377 |
> |
} |
378 |
> |
#else |
379 |
> |
pid = -1; /* no forking */ |
380 |
> |
#endif |
381 |
|
fls.l_len = (long)vres*hmult*hres*sizeof(COLR); |
382 |
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fls.l_start = scanorig + (vmult-1-ypos)*fls.l_len; |
383 |
+ |
#if NFS |
384 |
+ |
/* lock file section so NFS doesn't mess up */ |
385 |
+ |
fls.l_whence = 0; |
386 |
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fls.l_type = F_WRLCK; |
387 |
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fcntl(outfd, F_SETLKW, &fls); |
388 |
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#endif |
389 |
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/* write new piece to file */ |
390 |
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if (lseek(outfd, fls.l_start+(long)xpos*hres*sizeof(COLR), 0) == -1) |
391 |
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goto seekerr; |
392 |
< |
for (y = 0; y < vr; y++) { |
393 |
< |
if (writebuf(outfd, (char *)(pbuf+y*hr), hr*sizeof(COLR)) != |
394 |
< |
hr*sizeof(COLR)) { |
395 |
< |
fprintf(stderr, "%s: write error on file \"%s\"\n", |
396 |
< |
progname, outfile); |
397 |
< |
exit(1); |
392 |
> |
if (hmult == 1) { |
393 |
> |
if (writebuf(outfd, (char *)pbuf, |
394 |
> |
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
395 |
> |
goto writerr; |
396 |
> |
} else |
397 |
> |
for (y = 0; y < vr; y++) { |
398 |
> |
if (writebuf(outfd, (char *)(pbuf+y*hr), |
399 |
> |
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
400 |
> |
goto writerr; |
401 |
> |
if (y < vr-1 && lseek(outfd, |
402 |
> |
(long)(hmult-1)*hr*sizeof(COLR), |
403 |
> |
1) == -1) |
404 |
> |
goto seekerr; |
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} |
406 |
< |
if (hmult != 1 && y < vr-1 && lseek(outfd, |
407 |
< |
(long)(hmult-1)*hr*sizeof(COLR), 1) == -1) |
408 |
< |
goto seekerr; |
406 |
> |
if (pid == -1) { /* fork failed */ |
407 |
> |
#if NFS |
408 |
> |
fls.l_type = F_UNLCK; /* release lock */ |
409 |
> |
fcntl(outfd, F_SETLKW, &fls); |
410 |
> |
#endif |
411 |
> |
return(0); |
412 |
|
} |
413 |
< |
/* unlock file section */ |
352 |
< |
fls.l_type = F_UNLCK; |
353 |
< |
fcntl(outfd, F_SETLKW, &fls); |
354 |
< |
return; |
413 |
> |
_exit(0); /* else exit child process (releasing lock) */ |
414 |
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seekerr: |
415 |
|
fprintf(stderr, "%s: seek error on file \"%s\"\n", progname, outfile); |
416 |
< |
exit(1); |
416 |
> |
_exit(1); |
417 |
> |
writerr: |
418 |
> |
fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
419 |
> |
_exit(1); |
420 |
|
} |
421 |
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|
422 |
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#endif |