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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.15
Committed: Thu Jun 9 18:27:44 2005 UTC (18 years, 10 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.14: +5 -1 lines
Log Message: 
Added warning & check for case where no output files exist with -r option

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.15 static const char RCSid[] = "$Id: rtcontrib.c,v 1.14 2005/06/09 17:27:28 greg Exp $";
3 greg 1.1 #endif
4     /*
5     * Gather rtrace output to compute contributions from particular sources
6     */
7    
8 greg 1.4 #include "standard.h"
9 greg 1.1 #include <ctype.h>
10 greg 1.7 #include <signal.h>
11 greg 1.1 #include "platform.h"
12     #include "rtprocess.h"
13     #include "selcall.h"
14     #include "color.h"
15     #include "resolu.h"
16     #include "lookup.h"
17     #include "calcomp.h"
18    
19     #define MAXMODLIST 1024 /* maximum modifiers we'll track */
20    
21     int treebufsiz = BUFSIZ; /* current tree buffer size */
22    
23 greg 1.2 typedef double DCOLOR[3]; /* double-precision color */
24    
25 greg 1.1 /*
26     * The modcont structure is used to accumulate ray contributions
27     * for a particular modifier, which may be subdivided into bins
28     * if binv is non-NULL. If outspec contains a %s in it, this will
29     * be replaced with the modifier name. If outspec contains a %d in it,
30     * this will be used to create one output file per bin, otherwise all bins
31     * will be written to the same file, in order. If the global outfmt
32     * is 'c', then a 4-byte RGBE pixel will be output for each bin value
33     * and the file will conform to a RADIANCE image if xres & yres are set.
34     */
35     typedef struct {
36     const char *outspec; /* output file specification */
37     const char *modname; /* modifier name */
38     EPNODE *binv; /* bin value expression */
39     int nbins; /* number of accumulation bins */
40 greg 1.2 DCOLOR cbin[1]; /* contribution bins (extends struct) */
41 greg 1.1 } MODCONT; /* modifier contribution */
42    
43     static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); }
44    
45     LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */
46    
47     /* close output stream */
48     static void closefile(void *p) { fclose((FILE *)p); }
49    
50     LUTAB ofiletab = LU_SINIT(free,closefile); /* output file table */
51    
52 greg 1.14 #define OF_MODIFIER 01
53     #define OF_BIN 02
54    
55 greg 1.1 FILE *getofile(const char *ospec, const char *mname, int bn);
56 greg 1.14 int ofname(char *oname, const char *ospec, const char *mname, int bn);
57     void printheader(FILE *fout, const char *info);
58 greg 1.1
59     /*
60     * The rcont structure is used to manage i/o with a particular
61     * rtrace child process. Input is passed unchanged from stdin,
62     * and output is processed in input order and accumulated according
63     * to the corresponding modifier and bin number.
64     */
65     struct rtproc {
66     struct rtproc *next; /* next in list of processes */
67     SUBPROC pd; /* rtrace pipe descriptors */
68 greg 1.2 unsigned long raynum; /* ray number for this tree */
69     int bsiz; /* ray tree buffer length */
70     char *buf; /* ray tree buffer */
71     int nbr; /* number of bytes from rtrace */
72 greg 1.5 }; /* rtrace process buffer */
73 greg 1.1
74     /* rtrace command and defaults */
75 greg 1.6 char *rtargv[256] = { "rtrace", "-dj", ".5", "-dr", "3",
76 greg 1.13 "-ab", "1", "-ad", "128", };
77     int rtargc = 9;
78 greg 1.1 /* overriding rtrace options */
79 greg 1.6 char *myrtopts[] = { "-o~~TmWdp", "-h-", "-x", "1", "-y", "0",
80     "-dt", "0", "-as", "0", "-aa", "0", NULL };
81 greg 1.1
82     struct rtproc rt0; /* head of rtrace process list */
83    
84     struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */
85    
86     char persistfn[] = "pfXXXXXX"; /* persist file name */
87    
88     int gargc; /* global argc */
89     char **gargv; /* global argv */
90     #define progname gargv[0]
91    
92     char *octree; /* global octree argument */
93    
94     int inpfmt = 'a'; /* input format */
95     int outfmt = 'a'; /* output format */
96    
97     int header = 1; /* output header? */
98     int xres = 0; /* horiz. output resolution */
99     int yres = 0; /* vert. output resolution */
100    
101 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
102 greg 1.1 long waitflush; /* how long until next flush */
103    
104     unsigned long lastray = 0; /* last ray number sent */
105     unsigned long lastdone = 0; /* last ray processed */
106    
107 greg 1.2 int using_stdout = 0; /* are we using stdout? */
108    
109 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
110     int nmods = 0; /* number of modifiers */
111    
112     MODCONT *addmodifier(char *modn, char *outf, char *binv);
113    
114 greg 1.5 void init(int np);
115 greg 1.1 int done_rprocs(struct rtproc *rtp);
116 greg 1.14 void recover_output(FILE *fin);
117     void trace_contribs(FILE *fin);
118 greg 1.1 struct rtproc *wait_rproc(void);
119     struct rtproc *get_rproc(void);
120 greg 1.3 void queue_raytree(struct rtproc *rtp);
121     void process_queue(void);
122 greg 1.1
123 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
124 greg 1.2 void add_contrib(const char *modn);
125 greg 1.1 void done_contrib(void);
126    
127     /* set input/output format */
128     static void
129     setformat(const char *fmt)
130     {
131     switch (fmt[0]) {
132     case 'f':
133     case 'd':
134 greg 1.10 SET_FILE_BINARY(stdin);
135     /* fall through */
136     case 'a':
137 greg 1.1 inpfmt = fmt[0];
138     break;
139     default:
140     goto fmterr;
141     }
142     switch (fmt[1]) {
143     case '\0':
144     outfmt = inpfmt;
145     return;
146     case 'a':
147     case 'f':
148     case 'd':
149     case 'c':
150     outfmt = fmt[1];
151     break;
152     default:
153     goto fmterr;
154     }
155     if (!fmt[2])
156     return;
157     fmterr:
158     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
159     error(USER, errmsg);
160     }
161    
162     /* gather rays from rtrace and output contributions */
163     int
164     main(int argc, char *argv[])
165     {
166     int nprocs = 1;
167 greg 1.14 int recover = 0;
168 greg 1.1 char *curout = NULL;
169     char *binval = NULL;
170 greg 1.5 char fmt[8];
171 greg 1.2 int i, j;
172     /* global program name */
173 greg 1.1 gargv = argv;
174 greg 1.11 /* initialize calcomp routines */
175 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
176     esupport &= ~(E_OUTCHAN);
177 greg 1.11 varset("PI", ':', PI);
178 greg 1.1 /* get our options */
179 greg 1.2 for (i = 1; i < argc-1; i++) {
180     /* expand arguments */
181     while ((j = expandarg(&argc, &argv, i)) > 0)
182     ;
183     if (j < 0) {
184     fprintf(stderr, "%s: cannot expand '%s'",
185     argv[0], argv[i]);
186     exit(1);
187     }
188     if (argv[i][0] == '-')
189     switch (argv[i][1]) {
190 greg 1.14 case 'r': /* recover output */
191     if (argv[i][2]) break;
192     recover++;
193     continue;
194 greg 1.2 case 'n': /* number of processes */
195     if (argv[i][2] || i >= argc-1) break;
196     nprocs = atoi(argv[++i]);
197     if (nprocs <= 0)
198     error(USER, "illegal number of processes");
199     continue;
200     case 'h': /* output header? */
201     switch (argv[i][2]) {
202     case '\0':
203     header = !header;
204     continue;
205 greg 1.3 case '+': case '1':
206     case 'T': case 't':
207     case 'Y': case 'y':
208 greg 1.2 header = 1;
209     continue;
210 greg 1.3 case '-': case '0':
211     case 'F': case 'f':
212     case 'N': case 'n':
213 greg 1.2 header = 0;
214     continue;
215     }
216     break;
217     case 'f': /* file or i/o format */
218     if (!argv[i][2]) {
219 greg 1.9 char *fpath;
220 greg 1.2 if (i >= argc-1) break;
221 greg 1.9 fpath = getpath(argv[++i],
222     getrlibpath(), R_OK);
223     if (fpath == NULL) {
224     sprintf(errmsg,
225     "cannot find file '%s'",
226     argv[i]);
227     error(USER, errmsg);
228     }
229     fcompile(fpath);
230 greg 1.2 continue;
231     }
232     setformat(argv[i]+2);
233     continue;
234     case 'e': /* expression */
235     if (argv[i][2] || i >= argc-1) break;
236     scompile(argv[++i], NULL, 0);
237 greg 1.1 continue;
238 greg 1.2 case 'o': /* output file spec. */
239     if (argv[i][2] || i >= argc-1) break;
240     curout = argv[++i];
241 greg 1.1 continue;
242 greg 1.2 case 'x': /* horiz. output resolution */
243     if (argv[i][2] || i >= argc-1) break;
244     xres = atoi(argv[++i]);
245 greg 1.1 continue;
246 greg 1.2 case 'y': /* vert. output resolution */
247     if (argv[i][2] || i >= argc-1) break;
248     yres = atoi(argv[++i]);
249     continue;
250     case 'b': /* bin expression */
251     if (argv[i][2] || i >= argc-1) break;
252     binval = argv[++i];
253     continue;
254     case 'm': /* modifier name */
255     if (argv[i][2] || i >= argc-1) break;
256     rtargv[rtargc++] = "-ti";
257     rtargv[rtargc++] = argv[++i];
258     addmodifier(argv[i], curout, binval);
259 greg 1.1 continue;
260     }
261 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
262 greg 1.1 }
263 greg 1.2 /* set global argument list */
264     gargc = argc; gargv = argv;
265 greg 1.1 /* add "mandatory" rtrace settings */
266 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
267     rtargv[rtargc++] = myrtopts[j];
268     /* just asking for defaults? */
269     if (!strcmp(argv[i], "-defaults")) {
270 greg 1.1 char sxres[16], syres[16];
271     char *rtpath;
272 greg 1.2 printf("-n %-2d\t\t\t\t# number of processes\n", nprocs);
273 greg 1.1 fflush(stdout); /* report OUR options */
274     rtargv[rtargc++] = header ? "-h+" : "-h-";
275     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
276     rtargv[rtargc++] = fmt;
277     rtargv[rtargc++] = "-x";
278     sprintf(sxres, "%d", xres);
279     rtargv[rtargc++] = sxres;
280     rtargv[rtargc++] = "-y";
281     sprintf(syres, "%d", yres);
282     rtargv[rtargc++] = syres;
283 greg 1.2 rtargv[rtargc++] = "-oTW";
284 greg 1.1 rtargv[rtargc++] = "-defaults";
285     rtargv[rtargc] = NULL;
286     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
287     if (rtpath == NULL) {
288     eputs(rtargv[0]);
289     eputs(": command not found\n");
290     exit(1);
291     }
292     execv(rtpath, rtargv);
293     perror(rtpath); /* execv() should not return */
294     exit(1);
295 greg 1.5 }
296     if (nprocs > 1) { /* add persist file if parallel */
297 greg 1.2 rtargv[rtargc++] = "-PP";
298     rtargv[rtargc++] = mktemp(persistfn);
299     }
300 greg 1.1 /* add format string */
301     sprintf(fmt, "-f%cf", inpfmt);
302     rtargv[rtargc++] = fmt;
303     /* octree argument is last */
304 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
305     error(USER, "missing octree argument");
306     rtargv[rtargc++] = octree = argv[i];
307 greg 1.1 rtargv[rtargc] = NULL;
308 greg 1.2 /* start rtrace & compute contributions */
309 greg 1.1 init(nprocs);
310 greg 1.14 if (recover) /* perform recovery if requested */
311     recover_output(stdin);
312 greg 1.5 trace_contribs(stdin);
313 greg 1.1 quit(0);
314     }
315    
316     /* kill persistent rtrace process */
317     static void
318     killpersist(void)
319     {
320     FILE *fp = fopen(persistfn, "r");
321     int pid;
322    
323     if (fp == NULL)
324     return;
325     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
326     unlink(persistfn);
327     fclose(fp);
328     }
329    
330     /* close rtrace processes and clean up */
331     int
332     done_rprocs(struct rtproc *rtp)
333     {
334     int st0, st1 = 0;
335    
336     if (rtp->next != NULL) { /* close last opened first! */
337     st1 = done_rprocs(rtp->next);
338     free((void *)rtp->next);
339     rtp->next = NULL;
340     }
341     st0 = close_process(&rtp->pd);
342     if (st0 < 0)
343     error(WARNING, "unknown return status from rtrace process");
344     else if (st0 > 0)
345     return(st0);
346     return(st1);
347     }
348    
349     /* exit with status */
350     void
351     quit(int status)
352     {
353     int rtstat;
354    
355     if (rt0.next != NULL) /* terminate persistent rtrace */
356     killpersist();
357     /* clean up rtrace process(es) */
358     rtstat = done_rprocs(&rt0);
359     if (status == 0)
360     status = rtstat;
361     exit(status); /* flushes all output streams */
362     }
363    
364 greg 1.5 /* start rtrace processes and initialize */
365 greg 1.1 void
366     init(int np)
367     {
368     struct rtproc *rtp;
369     int i;
370     int maxbytes;
371 greg 1.2 /* make sure we have something to do */
372     if (!nmods)
373     error(USER, "No modifiers specified");
374 greg 1.1 /* assign ray variables */
375     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
376     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
377     /* set up signal handling */
378 greg 1.3 signal(SIGINT, quit);
379     #ifdef SIGHUP
380     signal(SIGHUP, quit);
381     #endif
382     #ifdef SIGTERM
383     signal(SIGTERM, quit);
384     #endif
385     #ifdef SIGPIPE
386 greg 1.1 signal(SIGPIPE, quit);
387     #endif
388     rtp = &rt0; /* start rtrace process(es) */
389     for (i = 0; i++ < np; ) {
390     errno = 0;
391     maxbytes = open_process(&rtp->pd, rtargv);
392     if (maxbytes == 0) {
393     eputs(rtargv[0]);
394     eputs(": command not found\n");
395     exit(1);
396     }
397     if (maxbytes < 0)
398     error(SYSTEM, "cannot start rtrace process");
399     if (maxbytes > treebufsiz)
400     treebufsiz = maxbytes;
401 greg 1.2 rtp->raynum = 0;
402 greg 1.1 rtp->bsiz = 0;
403     rtp->buf = NULL;
404 greg 1.2 rtp->nbr = 0;
405 greg 1.1 if (i == np) /* last process? */
406     break;
407     if (i == 1)
408     sleep(2); /* wait for persist file */
409     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
410     if (rtp->next == NULL)
411     error(SYSTEM, "out of memory in init");
412     rtp = rtp->next;
413     }
414     rtp->next = NULL; /* terminate list */
415     if (yres > 0) {
416     if (xres > 0)
417 greg 1.14 raysleft = (unsigned long)xres*yres;
418 greg 1.1 else
419     raysleft = yres;
420     } else
421     raysleft = 0;
422     waitflush = xres;
423     }
424    
425     /* add modifier to our list to track */
426     MODCONT *
427     addmodifier(char *modn, char *outf, char *binv)
428     {
429     LUENT *lep = lu_find(&modconttab, modn);
430     MODCONT *mp;
431    
432     if (lep->data != NULL) {
433     sprintf(errmsg, "duplicate modifier '%s'", modn);
434     error(USER, errmsg);
435     }
436     if (nmods >= MAXMODLIST)
437     error(USER, "too many modifiers");
438     modname[nmods++] = modn; /* XXX assumes static string */
439     lep->key = modn; /* XXX assumes static string */
440     mp = (MODCONT *)malloc(sizeof(MODCONT));
441     if (mp == NULL)
442     error(SYSTEM, "out of memory in addmodifier");
443     lep->data = (char *)mp;
444     mp->outspec = outf; /* XXX assumes static string */
445     mp->modname = modn; /* XXX assumes static string */
446     if (binv != NULL)
447     mp->binv = eparse(binv);
448     else
449     mp->binv = eparse("0");
450     mp->nbins = 1;
451     setcolor(mp->cbin[0], 0., 0., 0.);
452     return mp;
453     }
454    
455     /* put string to stderr */
456     void
457     eputs(char *s)
458     {
459     static int midline = 0;
460    
461     if (!*s) return;
462     if (!midline) {
463     fputs(progname, stderr);
464     fputs(": ", stderr);
465     }
466     fputs(s, stderr);
467     midline = s[strlen(s)-1] != '\n';
468     }
469    
470 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
471     int
472     ofname(char *oname, const char *ospec, const char *mname, int bn)
473     {
474     const char *mnp = NULL;
475     const char *bnp = NULL;
476     const char *cp;
477    
478     if (ospec == NULL)
479     return -1;
480     for (cp = ospec; *cp; cp++) /* check format position(s) */
481     if (*cp == '%') {
482     do
483     ++cp;
484     while (isdigit(*cp));
485     switch (*cp) {
486     case '%':
487     break;
488     case 's':
489     if (mnp != NULL)
490     return -1;
491     mnp = cp;
492     break;
493     case 'd':
494     if (bnp != NULL)
495     return -1;
496     bnp = cp;
497     break;
498     default:
499     return -1;
500     }
501     }
502     if (mnp != NULL) { /* create file name */
503     if (bnp != NULL) {
504     if (bnp > mnp)
505     sprintf(oname, ospec, mname, bn);
506     else
507     sprintf(oname, ospec, bn, mname);
508     return OF_MODIFIER|OF_BIN;
509     }
510     sprintf(oname, ospec, mname);
511     return OF_MODIFIER;
512     }
513     if (bnp != NULL) {
514     sprintf(oname, ospec, bn);
515     return OF_BIN;
516     }
517     strcpy(oname, ospec);
518     return 0;
519     }
520    
521 greg 1.1 /* write header to the given output stream */
522     void
523 greg 1.14 printheader(FILE *fout, const char *info)
524 greg 1.1 {
525     extern char VersionID[];
526     FILE *fin = fopen(octree, "r");
527    
528     if (fin == NULL)
529     quit(1);
530 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
531 greg 1.1 fclose(fin);
532     printargs(gargc-1, gargv, fout); /* add our command */
533     fprintf(fout, "SOFTWARE= %s\n", VersionID);
534     fputnow(fout);
535 greg 1.14 if (info != NULL) /* add extra info if given */
536     fputs(info, fout);
537 greg 1.1 switch (outfmt) { /* add output format */
538     case 'a':
539     fputformat("ascii", fout);
540     break;
541     case 'f':
542     fputformat("float", fout);
543     break;
544     case 'd':
545     fputformat("double", fout);
546     break;
547     case 'c':
548     fputformat(COLRFMT, fout);
549     break;
550     }
551     fputc('\n', fout);
552     if (xres > 0) {
553     if (yres > 0) /* resolution string */
554     fprtresolu(xres, yres, fout);
555     fflush(fout);
556     }
557     }
558    
559     /* Get output file pointer (open and write header if new) */
560     FILE *
561     getofile(const char *ospec, const char *mname, int bn)
562     {
563 greg 1.14 int ofl;
564     char oname[1024];
565 greg 1.1 LUENT *lep;
566    
567     if (ospec == NULL) { /* use stdout? */
568 greg 1.10 if (!using_stdout) {
569     if (outfmt != 'a')
570     SET_FILE_BINARY(stdout);
571     if (header)
572 greg 1.14 printheader(stdout, NULL);
573 greg 1.10 }
574 greg 1.1 using_stdout = 1;
575     return stdout;
576     }
577 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
578     if (ofl < 0) {
579     sprintf(errmsg, "bad output format '%s'", ospec);
580     error(USER, errmsg);
581     }
582     lep = lu_find(&ofiletab, oname); /* look it up */
583 greg 1.1 if (lep->key == NULL) /* new entry */
584 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
585 greg 1.1 if (lep->data == NULL) { /* open output file */
586 greg 1.10 FILE *fp;
587 greg 1.2 int i;
588 greg 1.14 if (oname[0] == '!') /* output to command */
589     fp = popen(oname+1, "w");
590 greg 1.10 else
591 greg 1.14 fp = fopen(oname, "w");
592 greg 1.2 if (fp == NULL) {
593 greg 1.14 sprintf(errmsg, "cannot open '%s' for writing", oname);
594 greg 1.1 error(SYSTEM, errmsg);
595     }
596 greg 1.10 if (outfmt != 'a')
597     SET_FILE_BINARY(fp);
598 greg 1.14 if (header) {
599     char info[512];
600     char *cp = info;
601     if (ofl & OF_MODIFIER) {
602     sprintf(cp, "MODIFIER=%s\n", mname);
603     while (*cp) ++cp;
604     }
605     if (ofl & OF_BIN) {
606     sprintf(cp, "BIN=%d\n", bn);
607     while (*cp) ++cp;
608     }
609     *cp = '\0';
610     printheader(fp, info);
611     }
612 greg 1.2 /* play catch-up */
613     for (i = 0; i < lastdone; i++) {
614     static const DCOLOR nocontrib = BLKCOLOR;
615 greg 1.14 put_contrib(nocontrib, fp);
616 greg 1.2 if (outfmt == 'a')
617     putc('\n', fp);
618     }
619     if (xres > 0)
620     fflush(fp);
621     lep->data = (char *)fp;
622 greg 1.1 }
623     return (FILE *)lep->data; /* return open file pointer */
624     }
625    
626     /* read input ray into buffer */
627     int
628     getinp(char *buf, FILE *fp)
629     {
630 greg 1.4 char *cp;
631     int i;
632    
633 greg 1.1 switch (inpfmt) {
634     case 'a':
635 greg 1.4 cp = buf; /* make sure we get 6 floats */
636     for (i = 0; i < 6; i++) {
637     if (fgetword(cp, buf+127-cp, fp) == NULL)
638     return 0;
639     if ((cp = fskip(cp)) == NULL || *cp)
640     return 0;
641     *cp++ = ' ';
642     }
643     getc(fp); /* get/put eol */
644     *cp-- = '\0'; *cp = '\n';
645 greg 1.1 return strlen(buf);
646     case 'f':
647     if (fread(buf, sizeof(float), 6, fp) < 6)
648     return 0;
649     return sizeof(float)*6;
650     case 'd':
651     if (fread(buf, sizeof(double), 6, fp) < 6)
652     return 0;
653     return sizeof(double)*6;
654     }
655     error(INTERNAL, "botched input format");
656     return 0; /* pro forma return */
657     }
658    
659 greg 1.2 static float rparams[9]; /* traced ray parameters */
660 greg 1.1
661     /* return channel (ray) value */
662     double
663     chanvalue(int n)
664     {
665     if (--n < 0 || n >= 6)
666     error(USER, "illegal channel number ($N)");
667 greg 1.2 return rparams[n+3];
668 greg 1.1 }
669    
670 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
671 greg 1.1 void
672 greg 1.2 add_contrib(const char *modn)
673 greg 1.1 {
674     LUENT *le = lu_find(&modconttab, modn);
675     MODCONT *mp = (MODCONT *)le->data;
676     int bn;
677    
678     if (mp == NULL) {
679     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
680     error(USER, errmsg);
681     }
682 greg 1.2 eclock++; /* get bin number */
683 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
684     if (bn <= 0)
685     bn = 0;
686     else if (bn > mp->nbins) { /* new bin */
687     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) +
688 greg 1.2 bn*sizeof(DCOLOR));
689 greg 1.1 if (mp == NULL)
690     error(SYSTEM, "out of memory in add_contrib");
691 greg 1.2 memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(bn+1-mp->nbins));
692 greg 1.1 mp->nbins = bn+1;
693     le->data = (char *)mp;
694     }
695 greg 1.2 addcolor(mp->cbin[bn], rparams);
696 greg 1.1 }
697    
698     /* output newline to ASCII file and/or flush as requested */
699     static int
700     puteol(const LUENT *e, void *p)
701     {
702     FILE *fp = (FILE *)e->data;
703    
704     if (outfmt == 'a')
705     putc('\n', fp);
706     if (!waitflush)
707     fflush(fp);
708     if (ferror(fp)) {
709     sprintf(errmsg, "write error on file '%s'", e->key);
710     error(SYSTEM, errmsg);
711     }
712     return 0;
713     }
714    
715 greg 1.2 /* put out ray contribution to file */
716     void
717 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
718 greg 1.2 {
719     float fv[3];
720     COLR cv;
721    
722     switch (outfmt) {
723     case 'a':
724     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
725     break;
726     case 'f':
727     fv[0] = cnt[0];
728     fv[1] = cnt[1];
729     fv[2] = cnt[2];
730     fwrite(fv, sizeof(float), 3, fout);
731     break;
732     case 'd':
733     fwrite(cnt, sizeof(double), 3, fout);
734     break;
735     case 'c':
736     setcolr(cv, cnt[0], cnt[1], cnt[2]);
737     fwrite(cv, sizeof(cv), 1, fout);
738     break;
739     default:
740     error(INTERNAL, "botched output format");
741     }
742     }
743    
744 greg 1.1 /* output ray tallies and clear for next primary */
745     void
746     done_contrib(void)
747     {
748     int i, j;
749     MODCONT *mp;
750 greg 1.14 FILE *fp;
751 greg 1.1 /* output modifiers in order */
752     for (i = 0; i < nmods; i++) {
753     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
754 greg 1.12 fp = getofile(mp->outspec, mp->modname, 0);
755 greg 1.14 put_contrib(mp->cbin[0], fp);
756 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
757     fp == getofile(mp->outspec, mp->modname, 1))
758     for (j = 1; j < mp->nbins; j++)
759 greg 1.14 put_contrib(mp->cbin[j], fp);
760 greg 1.12 else
761     for (j = 1; j < mp->nbins; j++)
762 greg 1.14 put_contrib(mp->cbin[j],
763 greg 1.2 getofile(mp->outspec, mp->modname, j));
764 greg 1.1 /* clear for next ray tree */
765 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
766 greg 1.1 }
767     --waitflush; /* terminate records */
768     lu_doall(&ofiletab, puteol, NULL);
769 greg 1.2 if (using_stdout & (outfmt == 'a'))
770     putc('\n', stdout);
771     if (!waitflush) {
772 greg 1.1 waitflush = xres;
773 greg 1.2 if (using_stdout)
774     fflush(stdout);
775     }
776 greg 1.1 }
777    
778 greg 1.3 /* queue completed ray tree produced by rtrace process */
779     void
780     queue_raytree(struct rtproc *rtp)
781     {
782     struct rtproc *rtu, *rtl = NULL;
783     /* insert following ray order */
784     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
785     if (rtp->raynum < rtu->raynum)
786     break;
787     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
788     if (rtu == NULL)
789     error(SYSTEM, "out of memory in queue_raytree");
790     *rtu = *rtp;
791     if (rtl == NULL) {
792     rtu->next = rt_unproc;
793     rt_unproc = rtu;
794     } else {
795     rtu->next = rtl->next;
796     rtl->next = rtu;
797     }
798     rtp->raynum = 0; /* clear path for next ray tree */
799     rtp->bsiz = 0;
800     rtp->buf = NULL;
801     rtp->nbr = 0;
802     }
803    
804     /* process completed ray trees from our queue */
805 greg 1.1 void
806 greg 1.3 process_queue(void)
807 greg 1.1 {
808 greg 1.3 char modname[128];
809     /* ray-ordered queue */
810     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
811     struct rtproc *rtp = rt_unproc;
812 greg 1.2 int n = rtp->nbr;
813 greg 1.1 const char *cp = rtp->buf;
814     while (n > 0) { /* process rays */
815 greg 1.2 register char *mnp = modname;
816 greg 1.1 /* skip leading tabs */
817     while (n > 0 && *cp == '\t') {
818     cp++; n--;
819     }
820 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
821     error(USER, "bad modifier name from rtrace");
822     /* get modifier name */
823 greg 1.1 while (n > 0 && *cp != '\t') {
824     *mnp++ = *cp++; n--;
825     }
826     *mnp = '\0';
827 greg 1.2 cp++; n--; /* eat following tab */
828 greg 1.1 if (n < (int)(sizeof(float)*9))
829     error(USER, "incomplete ray value from rtrace");
830     /* add ray contribution */
831 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
832 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
833 greg 1.2 add_contrib(modname);
834 greg 1.1 }
835     done_contrib(); /* sum up contributions & output */
836     lastdone = rtp->raynum;
837 greg 1.3 free(rtp->buf); /* free up buffer space */
838     rt_unproc = rtp->next;
839     free(rtp); /* done with this ray tree */
840 greg 1.1 }
841     }
842    
843     /* wait for rtrace process to finish with ray tree */
844     struct rtproc *
845     wait_rproc(void)
846     {
847     struct rtproc *rtfree = NULL;
848     fd_set readset, errset;
849     int nr;
850     struct rtproc *rt;
851     int n;
852    
853     do {
854     nr = 0; /* prepare select call */
855     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
856     for (rt = &rt0; rt != NULL; rt = rt->next) {
857     if (rt->raynum) {
858     FD_SET(rt->pd.r, &readset);
859     ++nr;
860     }
861     FD_SET(rt->pd.r, &errset);
862     if (rt->pd.r >= n)
863     n = rt->pd.r + 1;
864     }
865     if (!nr) /* no rays pending */
866     break;
867     if (nr > 1) { /* call select for multiple proc's */
868     errno = 0;
869     if (select(n, &readset, NULL, &errset, NULL) < 0)
870     error(SYSTEM, "select call error in wait_rproc()");
871     } else
872     FD_ZERO(&errset);
873     nr = 0;
874     for (rt = &rt0; rt != NULL; rt = rt->next) {
875     if (!FD_ISSET(rt->pd.r, &readset) &&
876     !FD_ISSET(rt->pd.r, &errset))
877     continue;
878     if (rt->buf == NULL) {
879     rt->bsiz = treebufsiz;
880     rt->buf = (char *)malloc(treebufsiz);
881 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
882 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
883     rt->bsiz = treebufsiz;
884     else
885     rt->bsiz = treebufsiz += BUFSIZ;
886     rt->buf = (char *)realloc(rt->buf, rt->bsiz);
887     }
888     if (rt->buf == NULL)
889     error(SYSTEM, "out of memory in wait_rproc");
890 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
891     if (nr <= 0)
892 greg 1.1 error(USER, "rtrace process died");
893 greg 1.2 rt->nbr += nr; /* advance & check */
894     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
895     "~\t~\t", 4)) {
896     rt->nbr -= 4; /* elide terminator */
897 greg 1.3 queue_raytree(rt);
898 greg 1.1 rtfree = rt; /* ready for next ray */
899     }
900     }
901     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
902     return rtfree;
903     }
904    
905     /* return next available rtrace process */
906     struct rtproc *
907     get_rproc(void)
908     {
909     struct rtproc *rtp;
910     /* check for idle rtrace */
911     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
912     if (!rtp->raynum)
913     return rtp;
914     return wait_rproc(); /* need to wait for one */
915     }
916    
917     /* trace ray contributions (main loop) */
918     void
919 greg 1.5 trace_contribs(FILE *fin)
920 greg 1.1 {
921     char inpbuf[128];
922     int iblen;
923     struct rtproc *rtp;
924     /* loop over input */
925     while ((iblen = getinp(inpbuf, fin)) > 0) {
926     if (lastray+1 < lastray) { /* counter rollover? */
927     while (wait_rproc() != NULL)
928 greg 1.3 process_queue();
929 greg 1.1 lastdone = lastray = 0;
930     }
931     rtp = get_rproc(); /* get avail. rtrace process */
932 greg 1.3 rtp->raynum = ++lastray; /* assign ray to it */
933 greg 1.1 writebuf(rtp->pd.w, inpbuf, iblen);
934 greg 1.14 if (raysleft && !--raysleft)
935 greg 1.3 break;
936     process_queue(); /* catch up with results */
937 greg 1.1 }
938     while (wait_rproc() != NULL) /* process outstanding rays */
939 greg 1.3 process_queue();
940 greg 1.14 if (raysleft)
941 greg 1.2 error(USER, "unexpected EOF on input");
942 greg 1.14 lu_done(&ofiletab); /* close output files */
943     }
944    
945     /* seek on the given output file */
946     static int
947     myseeko(const LUENT *e, void *p)
948     {
949     if (fseeko((FILE *)e->data, *(off_t *)p, SEEK_CUR) < 0) {
950     sprintf(errmsg, "seek error on file '%s'", e->key);
951     error(SYSTEM, errmsg);
952     }
953     }
954    
955     /* recover output if possible */
956     void
957     recover_output(FILE *fin)
958     {
959     off_t lastout = -1;
960     int outvsiz;
961     char *outvfmt;
962     int i, j;
963     MODCONT *mp;
964     int ofl;
965     char oname[1024];
966     LUENT *ment, *oent;
967     FILE *fp;
968     off_t nvals;
969    
970     switch (outfmt) {
971     case 'a':
972     error(USER, "cannot recover ASCII output");
973     return;
974     case 'f':
975     outvsiz = sizeof(float)*3;
976     outvfmt = "float";
977     break;
978     case 'd':
979     outvsiz = sizeof(double)*3;
980     outvfmt = "double";
981     break;
982     case 'c':
983     outvsiz = sizeof(COLR);
984     outvfmt = COLRFMT;
985     break;
986     default:
987     error(INTERNAL, "botched output format");
988     return;
989     }
990     /* check modifier outputs */
991     for (i = 0; i < nmods; i++) {
992     ment = lu_find(&modconttab,modname[i]);
993     mp = (MODCONT *)ment->data;
994     if (mp->outspec == NULL)
995     error(USER, "cannot recover from stdout");
996     for (j = 0; ; j++) { /* check each bin's file */
997     ofl = ofname(oname, mp->outspec, mp->modname, j);
998     if (ofl < 0)
999     error(USER, "bad output file specification");
1000     oent = lu_find(&ofiletab, oname);
1001     if (oent->data != NULL) { /* saw this one already */
1002     if (ofl & OF_BIN)
1003     continue;
1004     break;
1005     }
1006     if (oname[0] == '!')
1007     error(USER, "cannot recover from command");
1008     /* open output */
1009     fp = fopen(oname, "rb+");
1010     if (fp == NULL)
1011     break; /* must be end of modifier */
1012     nvals = lseek(fileno(fp), 0, SEEK_END);
1013     if (nvals <= 0) {
1014     lastout = 0; /* empty output, quit here */
1015     fclose(fp);
1016     break;
1017     }
1018     lseek(fileno(fp), 0, SEEK_SET);
1019     if (header) {
1020     int xr, yr;
1021     if (checkheader(fp, outvfmt, NULL) != 1) {
1022     sprintf(errmsg,
1023     "format mismatch for '%s'",
1024     oname);
1025     error(USER, errmsg);
1026     }
1027     if (xres > 0 && yres > 0 &&
1028     (!fscnresolu(&xr, &yr, fp) ||
1029     xr != xres ||
1030     yr != yres)) {
1031     sprintf(errmsg,
1032     "resolution mismatch for '%s'",
1033     oname);
1034     error(USER, errmsg);
1035     }
1036     }
1037     nvals = (nvals - (off_t)ftell(fp)) / outvsiz;
1038     if (lastout < 0 || nvals < lastout)
1039     lastout = nvals;
1040     if (oent->key == NULL) /* new entry */
1041     oent->key = strcpy((char *)
1042     malloc(strlen(oname)+1), oname);
1043     oent->data = (char *)fp;
1044     if (!(ofl & OF_BIN))
1045     break; /* no bin separation */
1046     }
1047     if (!lastout) { /* empty output */
1048     error(WARNING, "no data to recover");
1049     lu_done(&ofiletab); /* reclose all outputs */
1050     return;
1051     }
1052     if (j > mp->nbins) { /* preallocate modifier bins */
1053     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) +
1054     (j-1)*sizeof(DCOLOR));
1055     if (mp == NULL)
1056     error(SYSTEM, "out of memory in recover_output");
1057     memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
1058     mp->nbins = j;
1059     ment->data = (char *)mp;
1060     }
1061     }
1062 greg 1.15 if (lastout < 0) {
1063     error(WARNING, "no existing output to recover");
1064     return;
1065     }
1066 greg 1.14 /* seek on all files */
1067     nvals = lastout * outvsiz;
1068     lu_doall(&ofiletab, myseeko, &nvals);
1069     /* discard input */
1070     for (nvals = 0; nvals < lastout; nvals++)
1071     if (getinp(oname, fin) <= 0)
1072     error(USER, "unexpected EOF on input");
1073     lastray = lastdone = (unsigned long)lastout;
1074     if (raysleft)
1075     raysleft -= lastray;
1076 greg 1.1 }