ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/util/rtcontrib.c
Revision: 1.36
Committed: Tue Oct 11 19:02:51 2005 UTC (18 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.35: +33 -13 lines
Log Message: 
Made it so zero ray directions flush output in rtcontrib

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.36 static const char RCSid[] = "$Id: rtcontrib.c,v 1.35 2005/10/11 16:54:26 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 greg 1.19 #ifndef MAXMODLIST
20 greg 1.1 #define MAXMODLIST 1024 /* maximum modifiers we'll track */
21 greg 1.19 #endif
22 greg 1.1
23     int treebufsiz = BUFSIZ; /* current tree buffer size */
24    
25 greg 1.2 typedef double DCOLOR[3]; /* double-precision color */
26    
27 greg 1.1 /*
28 greg 1.31 * The MODCONT structure is used to accumulate ray contributions
29 greg 1.1 * for a particular modifier, which may be subdivided into bins
30 greg 1.31 * if binv is non-zero. If outspec contains a %s in it, this will
31 greg 1.1 * be replaced with the modifier name. If outspec contains a %d in it,
32     * this will be used to create one output file per bin, otherwise all bins
33     * will be written to the same file, in order. If the global outfmt
34     * is 'c', then a 4-byte RGBE pixel will be output for each bin value
35     * and the file will conform to a RADIANCE image if xres & yres are set.
36     */
37     typedef struct {
38     const char *outspec; /* output file specification */
39     const char *modname; /* modifier name */
40     EPNODE *binv; /* bin value expression */
41     int nbins; /* number of accumulation bins */
42 greg 1.2 DCOLOR cbin[1]; /* contribution bins (extends struct) */
43 greg 1.1 } MODCONT; /* modifier contribution */
44    
45     static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); }
46    
47     LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */
48    
49 greg 1.31 #define CNT_UNKNOWN 0 /* unknown record length */
50     #define CNT_PIPE (-1) /* output to a pipe */
51     /*
52     * The STREAMOUT structure holds an open FILE pointer and a count of
53     * the number of RGB triplets per record, or CNT_UNKNOWN (0) if
54     * unknown or CNT_PIPE (-1) if writing to a command.
55     */
56     typedef struct {
57     FILE *ofp; /* output file pointer */
58     int reclen; /* triplets/record */
59     } STREAMOUT;
60    
61     /* close output stream and free record */
62     static void
63     closestream(void *p)
64     {
65     STREAMOUT *sop = (STREAMOUT *)p;
66 greg 1.33 int status;
67 greg 1.31 if (sop->reclen == CNT_PIPE)
68 greg 1.33 status = pclose(sop->ofp);
69 greg 1.31 else
70 greg 1.33 status = fclose(sop->ofp);
71     if (status)
72     error(SYSTEM, "error closing output stream");
73 greg 1.31 free(p);
74     }
75 greg 1.1
76 greg 1.31 LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */
77 greg 1.1
78 greg 1.14 #define OF_MODIFIER 01
79     #define OF_BIN 02
80    
81 greg 1.32 STREAMOUT *getostream(const char *ospec, const char *mname, int bn, int noopen);
82 greg 1.14 int ofname(char *oname, const char *ospec, const char *mname, int bn);
83     void printheader(FILE *fout, const char *info);
84 greg 1.30 void printresolu(FILE *fout);
85 greg 1.1
86     /*
87     * The rcont structure is used to manage i/o with a particular
88     * rtrace child process. Input is passed unchanged from stdin,
89     * and output is processed in input order and accumulated according
90     * to the corresponding modifier and bin number.
91     */
92     struct rtproc {
93     struct rtproc *next; /* next in list of processes */
94     SUBPROC pd; /* rtrace pipe descriptors */
95 greg 1.2 unsigned long raynum; /* ray number for this tree */
96     int bsiz; /* ray tree buffer length */
97     char *buf; /* ray tree buffer */
98     int nbr; /* number of bytes from rtrace */
99 greg 1.5 }; /* rtrace process buffer */
100 greg 1.1
101     /* rtrace command and defaults */
102 greg 1.18 char *rtargv[256+2*MAXMODLIST] = { "rtrace",
103     "-dj", ".5", "-dr", "3",
104 greg 1.13 "-ab", "1", "-ad", "128", };
105     int rtargc = 9;
106 greg 1.1 /* overriding rtrace options */
107 greg 1.6 char *myrtopts[] = { "-o~~TmWdp", "-h-", "-x", "1", "-y", "0",
108     "-dt", "0", "-as", "0", "-aa", "0", NULL };
109 greg 1.1
110     struct rtproc rt0; /* head of rtrace process list */
111    
112     struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */
113    
114     char persistfn[] = "pfXXXXXX"; /* persist file name */
115    
116     int gargc; /* global argc */
117     char **gargv; /* global argv */
118     #define progname gargv[0]
119    
120     char *octree; /* global octree argument */
121    
122     int inpfmt = 'a'; /* input format */
123     int outfmt = 'a'; /* output format */
124    
125     int header = 1; /* output header? */
126 greg 1.35 int force_open = 0; /* truncate existing output? */
127 greg 1.1 int xres = 0; /* horiz. output resolution */
128     int yres = 0; /* vert. output resolution */
129    
130 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
131 greg 1.1 long waitflush; /* how long until next flush */
132    
133     unsigned long lastray = 0; /* last ray number sent */
134     unsigned long lastdone = 0; /* last ray processed */
135    
136 greg 1.2 int using_stdout = 0; /* are we using stdout? */
137    
138 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
139     int nmods = 0; /* number of modifiers */
140    
141 greg 1.29 #define queue_length() (lastray - lastdone)
142    
143 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
144     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
145     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
146 greg 1.1
147 greg 1.5 void init(int np);
148 greg 1.1 int done_rprocs(struct rtproc *rtp);
149 greg 1.14 void recover_output(FILE *fin);
150     void trace_contribs(FILE *fin);
151 greg 1.1 struct rtproc *wait_rproc(void);
152     struct rtproc *get_rproc(void);
153 greg 1.3 void queue_raytree(struct rtproc *rtp);
154     void process_queue(void);
155 greg 1.1
156 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
157 greg 1.2 void add_contrib(const char *modn);
158 greg 1.1 void done_contrib(void);
159    
160 greg 1.29 /* return number of open rtrace processes */
161     static int
162     nrtprocs(void)
163     {
164     int nrtp = 0;
165     struct rtproc *rtp;
166    
167     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
168     nrtp += rtp->pd.running;
169     return(nrtp);
170     }
171    
172 greg 1.1 /* set input/output format */
173     static void
174     setformat(const char *fmt)
175     {
176     switch (fmt[0]) {
177     case 'f':
178     case 'd':
179 greg 1.10 SET_FILE_BINARY(stdin);
180     /* fall through */
181     case 'a':
182 greg 1.1 inpfmt = fmt[0];
183     break;
184     default:
185     goto fmterr;
186     }
187     switch (fmt[1]) {
188     case '\0':
189     outfmt = inpfmt;
190     return;
191     case 'a':
192     case 'f':
193     case 'd':
194     case 'c':
195     outfmt = fmt[1];
196     break;
197     default:
198     goto fmterr;
199     }
200     if (!fmt[2])
201     return;
202     fmterr:
203     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
204     error(USER, errmsg);
205     }
206    
207     /* gather rays from rtrace and output contributions */
208     int
209     main(int argc, char *argv[])
210     {
211     int nprocs = 1;
212 greg 1.14 int recover = 0;
213 greg 1.1 char *curout = NULL;
214     char *binval = NULL;
215 greg 1.31 int bincnt = 0;
216 greg 1.5 char fmt[8];
217 greg 1.2 int i, j;
218 greg 1.25 /* need at least one argument */
219     if (argc < 2) {
220     fprintf(stderr,
221     "Usage: %s [-n nprocs][-r][-e expr][-f source][-o ospec][-b binv] {-m mod | -M file} [rtrace options] octree\n",
222     argv[0]);
223     exit(1);
224     }
225 greg 1.2 /* global program name */
226 greg 1.1 gargv = argv;
227 greg 1.11 /* initialize calcomp routines */
228 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
229     esupport &= ~(E_OUTCHAN);
230 greg 1.11 varset("PI", ':', PI);
231 greg 1.1 /* get our options */
232 greg 1.2 for (i = 1; i < argc-1; i++) {
233     /* expand arguments */
234     while ((j = expandarg(&argc, &argv, i)) > 0)
235     ;
236     if (j < 0) {
237     fprintf(stderr, "%s: cannot expand '%s'",
238     argv[0], argv[i]);
239     exit(1);
240     }
241     if (argv[i][0] == '-')
242     switch (argv[i][1]) {
243 greg 1.14 case 'r': /* recover output */
244     if (argv[i][2]) break;
245     recover++;
246     continue;
247 greg 1.2 case 'n': /* number of processes */
248 greg 1.21 if (argv[i][2] || i >= argc-2) break;
249 greg 1.2 nprocs = atoi(argv[++i]);
250     if (nprocs <= 0)
251     error(USER, "illegal number of processes");
252     continue;
253     case 'h': /* output header? */
254     switch (argv[i][2]) {
255     case '\0':
256     header = !header;
257     continue;
258 greg 1.3 case '+': case '1':
259     case 'T': case 't':
260     case 'Y': case 'y':
261 greg 1.2 header = 1;
262     continue;
263 greg 1.3 case '-': case '0':
264     case 'F': case 'f':
265     case 'N': case 'n':
266 greg 1.2 header = 0;
267     continue;
268     }
269     break;
270 greg 1.35 case 'f': /* file or force or format */
271 greg 1.2 if (!argv[i][2]) {
272 greg 1.9 char *fpath;
273 greg 1.21 if (i >= argc-2) break;
274 greg 1.9 fpath = getpath(argv[++i],
275     getrlibpath(), R_OK);
276     if (fpath == NULL) {
277     sprintf(errmsg,
278     "cannot find file '%s'",
279     argv[i]);
280     error(USER, errmsg);
281     }
282     fcompile(fpath);
283 greg 1.2 continue;
284     }
285 greg 1.35 if (argv[i][2] == 'o') {
286     force_open++;
287     continue;
288     }
289 greg 1.2 setformat(argv[i]+2);
290     continue;
291     case 'e': /* expression */
292 greg 1.21 if (argv[i][2] || i >= argc-2) break;
293 greg 1.2 scompile(argv[++i], NULL, 0);
294 greg 1.1 continue;
295 greg 1.2 case 'o': /* output file spec. */
296 greg 1.21 if (argv[i][2] || i >= argc-2) break;
297 greg 1.2 curout = argv[++i];
298 greg 1.1 continue;
299 greg 1.2 case 'x': /* horiz. output resolution */
300 greg 1.21 if (argv[i][2] || i >= argc-2) break;
301 greg 1.2 xres = atoi(argv[++i]);
302 greg 1.1 continue;
303 greg 1.2 case 'y': /* vert. output resolution */
304 greg 1.21 if (argv[i][2] || i >= argc-2) break;
305 greg 1.2 yres = atoi(argv[++i]);
306     continue;
307 greg 1.31 case 'b': /* bin expression/count */
308     if (i >= argc-2) break;
309     if (argv[i][2] == 'n') {
310     bincnt = atoi(argv[++i]);
311     continue;
312     }
313     if (argv[i][2]) break;
314 greg 1.2 binval = argv[++i];
315     continue;
316     case 'm': /* modifier name */
317 greg 1.21 if (argv[i][2] || i >= argc-2) break;
318 greg 1.2 rtargv[rtargc++] = "-ti";
319     rtargv[rtargc++] = argv[++i];
320 greg 1.31 addmodifier(argv[i], curout, binval, bincnt);
321 greg 1.1 continue;
322 greg 1.17 case 'M': /* modifier file */
323 greg 1.21 if (argv[i][2] || i >= argc-2) break;
324 greg 1.19 rtargv[rtargc++] = "-tI";
325     rtargv[rtargc++] = argv[++i];
326 greg 1.31 addmodfile(argv[i], curout, binval, bincnt);
327 greg 1.17 continue;
328 greg 1.1 }
329 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
330 greg 1.1 }
331 greg 1.2 /* set global argument list */
332     gargc = argc; gargv = argv;
333 greg 1.1 /* add "mandatory" rtrace settings */
334 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
335     rtargv[rtargc++] = myrtopts[j];
336     /* just asking for defaults? */
337     if (!strcmp(argv[i], "-defaults")) {
338 greg 1.1 char sxres[16], syres[16];
339     char *rtpath;
340 greg 1.2 printf("-n %-2d\t\t\t\t# number of processes\n", nprocs);
341 greg 1.1 fflush(stdout); /* report OUR options */
342     rtargv[rtargc++] = header ? "-h+" : "-h-";
343     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
344     rtargv[rtargc++] = fmt;
345     rtargv[rtargc++] = "-x";
346     sprintf(sxres, "%d", xres);
347     rtargv[rtargc++] = sxres;
348     rtargv[rtargc++] = "-y";
349     sprintf(syres, "%d", yres);
350     rtargv[rtargc++] = syres;
351 greg 1.2 rtargv[rtargc++] = "-oTW";
352 greg 1.1 rtargv[rtargc++] = "-defaults";
353     rtargv[rtargc] = NULL;
354     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
355     if (rtpath == NULL) {
356     eputs(rtargv[0]);
357     eputs(": command not found\n");
358     exit(1);
359     }
360     execv(rtpath, rtargv);
361     perror(rtpath); /* execv() should not return */
362     exit(1);
363 greg 1.5 }
364     if (nprocs > 1) { /* add persist file if parallel */
365 greg 1.2 rtargv[rtargc++] = "-PP";
366     rtargv[rtargc++] = mktemp(persistfn);
367     }
368 greg 1.1 /* add format string */
369     sprintf(fmt, "-f%cf", inpfmt);
370     rtargv[rtargc++] = fmt;
371     /* octree argument is last */
372 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
373     error(USER, "missing octree argument");
374     rtargv[rtargc++] = octree = argv[i];
375 greg 1.1 rtargv[rtargc] = NULL;
376 greg 1.24 /* start rtrace */
377 greg 1.1 init(nprocs);
378 greg 1.14 if (recover) /* perform recovery if requested */
379     recover_output(stdin);
380 greg 1.24 trace_contribs(stdin); /* compute contributions */
381 greg 1.1 quit(0);
382     }
383    
384 schorsch 1.26 #ifndef SIGALRM
385     #define SIGALRM SIGTERM
386     #endif
387 greg 1.1 /* kill persistent rtrace process */
388     static void
389     killpersist(void)
390     {
391     FILE *fp = fopen(persistfn, "r");
392 schorsch 1.26 RT_PID pid;
393 greg 1.1
394     if (fp == NULL)
395     return;
396     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
397     unlink(persistfn);
398     fclose(fp);
399     }
400    
401     /* close rtrace processes and clean up */
402     int
403     done_rprocs(struct rtproc *rtp)
404     {
405     int st0, st1 = 0;
406    
407     if (rtp->next != NULL) { /* close last opened first! */
408     st1 = done_rprocs(rtp->next);
409     free((void *)rtp->next);
410     rtp->next = NULL;
411     }
412     st0 = close_process(&rtp->pd);
413     if (st0 < 0)
414     error(WARNING, "unknown return status from rtrace process");
415     else if (st0 > 0)
416     return(st0);
417     return(st1);
418     }
419    
420     /* exit with status */
421     void
422     quit(int status)
423     {
424     int rtstat;
425    
426     if (rt0.next != NULL) /* terminate persistent rtrace */
427     killpersist();
428     /* clean up rtrace process(es) */
429     rtstat = done_rprocs(&rt0);
430     if (status == 0)
431     status = rtstat;
432     exit(status); /* flushes all output streams */
433     }
434    
435 greg 1.5 /* start rtrace processes and initialize */
436 greg 1.1 void
437     init(int np)
438     {
439     struct rtproc *rtp;
440     int i;
441     int maxbytes;
442 greg 1.2 /* make sure we have something to do */
443     if (!nmods)
444     error(USER, "No modifiers specified");
445 greg 1.1 /* assign ray variables */
446     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
447     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
448     /* set up signal handling */
449 greg 1.3 signal(SIGINT, quit);
450     #ifdef SIGHUP
451     signal(SIGHUP, quit);
452     #endif
453     #ifdef SIGTERM
454     signal(SIGTERM, quit);
455     #endif
456     #ifdef SIGPIPE
457 greg 1.1 signal(SIGPIPE, quit);
458     #endif
459     rtp = &rt0; /* start rtrace process(es) */
460     for (i = 0; i++ < np; ) {
461     errno = 0;
462     maxbytes = open_process(&rtp->pd, rtargv);
463     if (maxbytes == 0) {
464     eputs(rtargv[0]);
465     eputs(": command not found\n");
466     exit(1);
467     }
468     if (maxbytes < 0)
469     error(SYSTEM, "cannot start rtrace process");
470     if (maxbytes > treebufsiz)
471     treebufsiz = maxbytes;
472 greg 1.2 rtp->raynum = 0;
473 greg 1.1 rtp->bsiz = 0;
474     rtp->buf = NULL;
475 greg 1.2 rtp->nbr = 0;
476 greg 1.1 if (i == np) /* last process? */
477     break;
478     if (i == 1)
479     sleep(2); /* wait for persist file */
480     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
481     if (rtp->next == NULL)
482     error(SYSTEM, "out of memory in init");
483     rtp = rtp->next;
484     }
485     rtp->next = NULL; /* terminate list */
486     if (yres > 0) {
487     if (xres > 0)
488 greg 1.14 raysleft = (unsigned long)xres*yres;
489 greg 1.1 else
490     raysleft = yres;
491     } else
492     raysleft = 0;
493     waitflush = xres;
494     }
495    
496 greg 1.31 /* grow modifier to accommodate more bins */
497     MODCONT *
498     growmodifier(MODCONT *mp, int nb)
499     {
500     if (nb <= mp->nbins)
501     return mp;
502     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
503     if (mp == NULL)
504     error(SYSTEM, "out of memory in growmodifier");
505     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
506     mp->nbins = nb;
507     return mp;
508     }
509    
510 greg 1.1 /* add modifier to our list to track */
511     MODCONT *
512 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
513 greg 1.1 {
514     LUENT *lep = lu_find(&modconttab, modn);
515     MODCONT *mp;
516 greg 1.32 int i;
517 greg 1.1
518     if (lep->data != NULL) {
519     sprintf(errmsg, "duplicate modifier '%s'", modn);
520     error(USER, errmsg);
521     }
522     if (nmods >= MAXMODLIST)
523     error(USER, "too many modifiers");
524     modname[nmods++] = modn; /* XXX assumes static string */
525     lep->key = modn; /* XXX assumes static string */
526     mp = (MODCONT *)malloc(sizeof(MODCONT));
527     if (mp == NULL)
528     error(SYSTEM, "out of memory in addmodifier");
529     mp->outspec = outf; /* XXX assumes static string */
530     mp->modname = modn; /* XXX assumes static string */
531     if (binv != NULL)
532     mp->binv = eparse(binv);
533     else
534     mp->binv = eparse("0");
535     mp->nbins = 1;
536     setcolor(mp->cbin[0], 0., 0., 0.);
537 greg 1.31 if (mp->binv->type == NUM) /* assume one bin if constant */
538     bincnt = 1;
539     else if (bincnt > 1)
540     mp = growmodifier(mp, bincnt);
541 greg 1.32 lep->data = (char *)mp;
542     /* allocate output streams */
543     for (i = outf==NULL || outf[0]=='!' ? 0 : bincnt; i--; )
544     getostream(mp->outspec, mp->modname, i, 1);
545 greg 1.1 return mp;
546     }
547    
548 greg 1.17 /* add modifiers from a file list */
549     void
550 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
551 greg 1.17 {
552     char *mname[MAXMODLIST];
553     int i;
554 greg 1.20 /* find the file & store strings */
555     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
556     sprintf(errmsg, "cannot find modifier file '%s'", fname);
557     error(SYSTEM, errmsg);
558     }
559 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
560 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
561 greg 1.17 }
562    
563 greg 1.1 /* put string to stderr */
564     void
565     eputs(char *s)
566     {
567     static int midline = 0;
568    
569     if (!*s) return;
570     if (!midline) {
571     fputs(progname, stderr);
572     fputs(": ", stderr);
573     }
574     fputs(s, stderr);
575     midline = s[strlen(s)-1] != '\n';
576     }
577    
578 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
579     int
580     ofname(char *oname, const char *ospec, const char *mname, int bn)
581     {
582     const char *mnp = NULL;
583     const char *bnp = NULL;
584     const char *cp;
585    
586     if (ospec == NULL)
587     return -1;
588     for (cp = ospec; *cp; cp++) /* check format position(s) */
589     if (*cp == '%') {
590     do
591     ++cp;
592     while (isdigit(*cp));
593     switch (*cp) {
594     case '%':
595     break;
596     case 's':
597     if (mnp != NULL)
598     return -1;
599     mnp = cp;
600     break;
601     case 'd':
602     if (bnp != NULL)
603     return -1;
604     bnp = cp;
605     break;
606     default:
607     return -1;
608     }
609     }
610     if (mnp != NULL) { /* create file name */
611     if (bnp != NULL) {
612     if (bnp > mnp)
613     sprintf(oname, ospec, mname, bn);
614     else
615     sprintf(oname, ospec, bn, mname);
616     return OF_MODIFIER|OF_BIN;
617     }
618     sprintf(oname, ospec, mname);
619     return OF_MODIFIER;
620     }
621     if (bnp != NULL) {
622     sprintf(oname, ospec, bn);
623     return OF_BIN;
624     }
625     strcpy(oname, ospec);
626     return 0;
627     }
628    
629 greg 1.1 /* write header to the given output stream */
630     void
631 greg 1.14 printheader(FILE *fout, const char *info)
632 greg 1.1 {
633     extern char VersionID[];
634     FILE *fin = fopen(octree, "r");
635    
636     if (fin == NULL)
637     quit(1);
638 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
639 greg 1.1 fclose(fin);
640     printargs(gargc-1, gargv, fout); /* add our command */
641     fprintf(fout, "SOFTWARE= %s\n", VersionID);
642     fputnow(fout);
643 greg 1.14 if (info != NULL) /* add extra info if given */
644     fputs(info, fout);
645 greg 1.1 switch (outfmt) { /* add output format */
646     case 'a':
647     fputformat("ascii", fout);
648     break;
649     case 'f':
650     fputformat("float", fout);
651     break;
652     case 'd':
653     fputformat("double", fout);
654     break;
655     case 'c':
656     fputformat(COLRFMT, fout);
657     break;
658     }
659     fputc('\n', fout);
660 greg 1.30 }
661    
662     /* write resolution string to given output stream */
663     void
664     printresolu(FILE *fout)
665     {
666 greg 1.1 if (xres > 0) {
667     if (yres > 0) /* resolution string */
668     fprtresolu(xres, yres, fout);
669     fflush(fout);
670     }
671     }
672    
673 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
674 greg 1.31 STREAMOUT *
675 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
676 greg 1.31 {
677     static STREAMOUT stdos;
678     int ofl;
679     char oname[1024];
680     LUENT *lep;
681     STREAMOUT *sop;
682 greg 1.1
683     if (ospec == NULL) { /* use stdout? */
684 greg 1.32 if (!noopen && !using_stdout) {
685 greg 1.31 stdos.reclen = 0;
686 greg 1.10 if (outfmt != 'a')
687     SET_FILE_BINARY(stdout);
688     if (header)
689 greg 1.14 printheader(stdout, NULL);
690 greg 1.30 printresolu(stdout);
691 greg 1.31 using_stdout = 1;
692 greg 1.10 }
693 greg 1.31 stdos.ofp = stdout;
694 greg 1.32 stdos.reclen += noopen;
695 greg 1.31 return &stdos;
696 greg 1.1 }
697 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
698     if (ofl < 0) {
699     sprintf(errmsg, "bad output format '%s'", ospec);
700     error(USER, errmsg);
701     }
702     lep = lu_find(&ofiletab, oname); /* look it up */
703 greg 1.1 if (lep->key == NULL) /* new entry */
704 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
705 greg 1.31 sop = (STREAMOUT *)lep->data;
706     if (sop == NULL) { /* allocate stream */
707     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
708     if (sop == NULL)
709     error(SYSTEM, "out of memory in getostream");
710 greg 1.34 sop->reclen = oname[0] == '!' ? CNT_PIPE : CNT_UNKNOWN;
711 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
712 greg 1.31 lep->data = (char *)sop;
713     }
714 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
715 greg 1.34 long i;
716 greg 1.14 if (oname[0] == '!') /* output to command */
717 greg 1.31 sop->ofp = popen(oname+1, "w");
718 greg 1.35 else if (!force_open && access(oname, F_OK) == 0)
719     errno = EEXIST; /* file exists */
720     else /* else open it */
721 greg 1.31 sop->ofp = fopen(oname, "w");
722     if (sop->ofp == NULL) {
723 greg 1.14 sprintf(errmsg, "cannot open '%s' for writing", oname);
724 greg 1.1 error(SYSTEM, errmsg);
725     }
726 greg 1.10 if (outfmt != 'a')
727 greg 1.31 SET_FILE_BINARY(sop->ofp);
728 greg 1.14 if (header) {
729     char info[512];
730     char *cp = info;
731 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
732 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
733     while (*cp) ++cp;
734     }
735 greg 1.14 if (ofl & OF_BIN) {
736     sprintf(cp, "BIN=%d\n", bn);
737     while (*cp) ++cp;
738     }
739     *cp = '\0';
740 greg 1.31 printheader(sop->ofp, info);
741 greg 1.14 }
742 greg 1.31 printresolu(sop->ofp);
743 greg 1.2 /* play catch-up */
744 greg 1.34 for (i = sop->reclen > 1 ? sop->reclen*lastdone : lastdone;
745     i--; ) {
746 greg 1.2 static const DCOLOR nocontrib = BLKCOLOR;
747 greg 1.31 put_contrib(nocontrib, sop->ofp);
748 greg 1.2 if (outfmt == 'a')
749 greg 1.31 putc('\n', sop->ofp);
750 greg 1.2 }
751     if (xres > 0)
752 greg 1.31 fflush(sop->ofp);
753 greg 1.1 }
754 greg 1.32 if (sop->reclen != CNT_PIPE) /* add to length if noopen */
755     sop->reclen += noopen;
756 greg 1.31 return sop; /* return open stream */
757 greg 1.1 }
758    
759     /* read input ray into buffer */
760     int
761     getinp(char *buf, FILE *fp)
762     {
763 greg 1.36 double dv[3];
764     float fv[3];
765 greg 1.4 char *cp;
766     int i;
767    
768 greg 1.1 switch (inpfmt) {
769     case 'a':
770 greg 1.4 cp = buf; /* make sure we get 6 floats */
771     for (i = 0; i < 6; i++) {
772     if (fgetword(cp, buf+127-cp, fp) == NULL)
773 greg 1.36 return -1;
774     if (i >= 3)
775     dv[i-3] = atof(cp);
776 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
777 greg 1.36 return -1;
778 greg 1.4 *cp++ = ' ';
779     }
780     getc(fp); /* get/put eol */
781     *cp-- = '\0'; *cp = '\n';
782 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
783     return 0; /* dummy ray */
784 greg 1.1 return strlen(buf);
785     case 'f':
786     if (fread(buf, sizeof(float), 6, fp) < 6)
787 greg 1.36 return -1;
788     memcpy(fv, buf+3*sizeof(float), 3*sizeof(float));
789     if (DOT(fv,fv) <= FTINY*FTINY)
790     return 0; /* dummy ray */
791 greg 1.1 return sizeof(float)*6;
792     case 'd':
793     if (fread(buf, sizeof(double), 6, fp) < 6)
794 greg 1.36 return -1;
795     memcpy(dv, buf+3*sizeof(double), 3*sizeof(double));
796     if (DOT(dv,dv) <= FTINY*FTINY)
797     return 0; /* dummy ray */
798 greg 1.1 return sizeof(double)*6;
799     }
800     error(INTERNAL, "botched input format");
801 greg 1.36 return -1; /* pro forma return */
802 greg 1.1 }
803    
804 greg 1.2 static float rparams[9]; /* traced ray parameters */
805 greg 1.1
806     /* return channel (ray) value */
807     double
808     chanvalue(int n)
809     {
810     if (--n < 0 || n >= 6)
811     error(USER, "illegal channel number ($N)");
812 greg 1.2 return rparams[n+3];
813 greg 1.1 }
814    
815 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
816 greg 1.1 void
817 greg 1.2 add_contrib(const char *modn)
818 greg 1.1 {
819     LUENT *le = lu_find(&modconttab, modn);
820     MODCONT *mp = (MODCONT *)le->data;
821     int bn;
822    
823     if (mp == NULL) {
824     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
825     error(USER, errmsg);
826     }
827 greg 1.2 eclock++; /* get bin number */
828 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
829     if (bn <= 0)
830     bn = 0;
831 greg 1.31 else if (bn >= mp->nbins) /* new bin */
832     le->data = (char *)(mp = growmodifier(mp, bn+1));
833 greg 1.2 addcolor(mp->cbin[bn], rparams);
834 greg 1.1 }
835    
836     /* output newline to ASCII file and/or flush as requested */
837     static int
838     puteol(const LUENT *e, void *p)
839     {
840 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
841 greg 1.1
842     if (outfmt == 'a')
843 greg 1.31 putc('\n', sop->ofp);
844 greg 1.1 if (!waitflush)
845 greg 1.31 fflush(sop->ofp);
846     if (ferror(sop->ofp)) {
847 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
848     error(SYSTEM, errmsg);
849     }
850     return 0;
851     }
852    
853 greg 1.2 /* put out ray contribution to file */
854     void
855 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
856 greg 1.2 {
857     float fv[3];
858     COLR cv;
859    
860     switch (outfmt) {
861     case 'a':
862     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
863     break;
864     case 'f':
865     fv[0] = cnt[0];
866     fv[1] = cnt[1];
867     fv[2] = cnt[2];
868     fwrite(fv, sizeof(float), 3, fout);
869     break;
870     case 'd':
871     fwrite(cnt, sizeof(double), 3, fout);
872     break;
873     case 'c':
874     setcolr(cv, cnt[0], cnt[1], cnt[2]);
875     fwrite(cv, sizeof(cv), 1, fout);
876     break;
877     default:
878     error(INTERNAL, "botched output format");
879     }
880     }
881    
882 greg 1.1 /* output ray tallies and clear for next primary */
883     void
884     done_contrib(void)
885     {
886 greg 1.31 int i, j;
887     MODCONT *mp;
888     STREAMOUT *sop;
889 greg 1.1 /* output modifiers in order */
890     for (i = 0; i < nmods; i++) {
891     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
892 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
893     put_contrib(mp->cbin[0], sop->ofp);
894 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
895 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
896 greg 1.12 for (j = 1; j < mp->nbins; j++)
897 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
898 greg 1.12 else
899     for (j = 1; j < mp->nbins; j++)
900 greg 1.14 put_contrib(mp->cbin[j],
901 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
902 greg 1.1 /* clear for next ray tree */
903 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
904 greg 1.1 }
905     --waitflush; /* terminate records */
906     lu_doall(&ofiletab, puteol, NULL);
907 greg 1.2 if (using_stdout & (outfmt == 'a'))
908     putc('\n', stdout);
909     if (!waitflush) {
910 greg 1.1 waitflush = xres;
911 greg 1.2 if (using_stdout)
912     fflush(stdout);
913     }
914 greg 1.1 }
915    
916 greg 1.3 /* queue completed ray tree produced by rtrace process */
917     void
918     queue_raytree(struct rtproc *rtp)
919     {
920     struct rtproc *rtu, *rtl = NULL;
921     /* insert following ray order */
922     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
923     if (rtp->raynum < rtu->raynum)
924     break;
925     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
926     if (rtu == NULL)
927     error(SYSTEM, "out of memory in queue_raytree");
928     *rtu = *rtp;
929     if (rtl == NULL) {
930     rtu->next = rt_unproc;
931     rt_unproc = rtu;
932     } else {
933     rtu->next = rtl->next;
934     rtl->next = rtu;
935     }
936     rtp->raynum = 0; /* clear path for next ray tree */
937     rtp->bsiz = 0;
938     rtp->buf = NULL;
939     rtp->nbr = 0;
940     }
941    
942     /* process completed ray trees from our queue */
943 greg 1.1 void
944 greg 1.3 process_queue(void)
945 greg 1.1 {
946 greg 1.3 char modname[128];
947     /* ray-ordered queue */
948     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
949     struct rtproc *rtp = rt_unproc;
950 greg 1.2 int n = rtp->nbr;
951 greg 1.1 const char *cp = rtp->buf;
952     while (n > 0) { /* process rays */
953 greg 1.2 register char *mnp = modname;
954 greg 1.1 /* skip leading tabs */
955     while (n > 0 && *cp == '\t') {
956     cp++; n--;
957     }
958 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
959     error(USER, "bad modifier name from rtrace");
960     /* get modifier name */
961 greg 1.1 while (n > 0 && *cp != '\t') {
962     *mnp++ = *cp++; n--;
963     }
964     *mnp = '\0';
965 greg 1.2 cp++; n--; /* eat following tab */
966 greg 1.1 if (n < (int)(sizeof(float)*9))
967     error(USER, "incomplete ray value from rtrace");
968     /* add ray contribution */
969 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
970 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
971 greg 1.2 add_contrib(modname);
972 greg 1.1 }
973     done_contrib(); /* sum up contributions & output */
974     lastdone = rtp->raynum;
975 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
976     free(rtp->buf);
977 greg 1.3 rt_unproc = rtp->next;
978     free(rtp); /* done with this ray tree */
979 greg 1.1 }
980     }
981    
982     /* wait for rtrace process to finish with ray tree */
983     struct rtproc *
984     wait_rproc(void)
985     {
986     struct rtproc *rtfree = NULL;
987     fd_set readset, errset;
988     int nr;
989     struct rtproc *rt;
990     int n;
991    
992     do {
993     nr = 0; /* prepare select call */
994     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
995     for (rt = &rt0; rt != NULL; rt = rt->next) {
996     if (rt->raynum) {
997     FD_SET(rt->pd.r, &readset);
998     ++nr;
999     }
1000     FD_SET(rt->pd.r, &errset);
1001     if (rt->pd.r >= n)
1002     n = rt->pd.r + 1;
1003     }
1004     if (!nr) /* no rays pending */
1005     break;
1006     if (nr > 1) { /* call select for multiple proc's */
1007     errno = 0;
1008     if (select(n, &readset, NULL, &errset, NULL) < 0)
1009     error(SYSTEM, "select call error in wait_rproc()");
1010     } else
1011     FD_ZERO(&errset);
1012     nr = 0;
1013     for (rt = &rt0; rt != NULL; rt = rt->next) {
1014     if (!FD_ISSET(rt->pd.r, &readset) &&
1015     !FD_ISSET(rt->pd.r, &errset))
1016     continue;
1017     if (rt->buf == NULL) {
1018     rt->bsiz = treebufsiz;
1019     rt->buf = (char *)malloc(treebufsiz);
1020 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1021 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1022     rt->bsiz = treebufsiz;
1023     else
1024 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1025 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1026     }
1027     if (rt->buf == NULL)
1028     error(SYSTEM, "out of memory in wait_rproc");
1029 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1030     if (nr <= 0)
1031 greg 1.1 error(USER, "rtrace process died");
1032 greg 1.2 rt->nbr += nr; /* advance & check */
1033     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1034     "~\t~\t", 4)) {
1035     rt->nbr -= 4; /* elide terminator */
1036 greg 1.3 queue_raytree(rt);
1037 greg 1.1 rtfree = rt; /* ready for next ray */
1038     }
1039     }
1040     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1041     return rtfree;
1042     }
1043    
1044     /* return next available rtrace process */
1045     struct rtproc *
1046     get_rproc(void)
1047     {
1048     struct rtproc *rtp;
1049     /* check for idle rtrace */
1050     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1051     if (!rtp->raynum)
1052     return rtp;
1053     return wait_rproc(); /* need to wait for one */
1054     }
1055    
1056     /* trace ray contributions (main loop) */
1057     void
1058 greg 1.5 trace_contribs(FILE *fin)
1059 greg 1.1 {
1060     char inpbuf[128];
1061     int iblen;
1062     struct rtproc *rtp;
1063     /* loop over input */
1064 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1065     if (!iblen || /* need reset? */
1066     queue_length() > 10*nrtprocs() ||
1067     lastray+1 < lastray) {
1068 greg 1.1 while (wait_rproc() != NULL)
1069 greg 1.3 process_queue();
1070 greg 1.34 if (lastray+1 < lastray)
1071     lastdone = lastray = 0;
1072 greg 1.1 }
1073     rtp = get_rproc(); /* get avail. rtrace process */
1074 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1075     if (iblen) { /* trace ray if valid */
1076     writebuf(rtp->pd.w, inpbuf, iblen);
1077     } else { /* else bypass dummy ray */
1078     queue_raytree(rtp); /* empty tree */
1079     if ((yres <= 0) & (waitflush > 0))
1080     waitflush = 1; /* flush after this */
1081     }
1082 greg 1.14 if (raysleft && !--raysleft)
1083 greg 1.3 break;
1084     process_queue(); /* catch up with results */
1085 greg 1.1 }
1086     while (wait_rproc() != NULL) /* process outstanding rays */
1087 greg 1.3 process_queue();
1088 greg 1.14 if (raysleft)
1089 greg 1.2 error(USER, "unexpected EOF on input");
1090 greg 1.14 lu_done(&ofiletab); /* close output files */
1091     }
1092    
1093     /* seek on the given output file */
1094     static int
1095     myseeko(const LUENT *e, void *p)
1096     {
1097 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1098     off_t nbytes = *(off_t *)p;
1099    
1100     if (sop->reclen > 1)
1101     nbytes = nbytes * sop->reclen;
1102     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1103 greg 1.14 sprintf(errmsg, "seek error on file '%s'", e->key);
1104     error(SYSTEM, errmsg);
1105     }
1106     }
1107    
1108     /* recover output if possible */
1109     void
1110     recover_output(FILE *fin)
1111     {
1112 greg 1.31 off_t lastout = -1;
1113     int outvsiz, recsiz;
1114     char *outvfmt;
1115     int i, j;
1116     MODCONT *mp;
1117     int ofl;
1118     char oname[1024];
1119     LUENT *ment, *oent;
1120     STREAMOUT sout;
1121     off_t nvals;
1122     int xr, yr;
1123 greg 1.14
1124     switch (outfmt) {
1125     case 'a':
1126     error(USER, "cannot recover ASCII output");
1127     return;
1128     case 'f':
1129     outvsiz = sizeof(float)*3;
1130     outvfmt = "float";
1131     break;
1132     case 'd':
1133     outvsiz = sizeof(double)*3;
1134     outvfmt = "double";
1135     break;
1136     case 'c':
1137     outvsiz = sizeof(COLR);
1138     outvfmt = COLRFMT;
1139     break;
1140     default:
1141     error(INTERNAL, "botched output format");
1142     return;
1143     }
1144     /* check modifier outputs */
1145     for (i = 0; i < nmods; i++) {
1146     ment = lu_find(&modconttab,modname[i]);
1147     mp = (MODCONT *)ment->data;
1148     if (mp->outspec == NULL)
1149     error(USER, "cannot recover from stdout");
1150 greg 1.31 if (mp->outspec[0] == '!')
1151     error(USER, "cannot recover from command");
1152 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1153     ofl = ofname(oname, mp->outspec, mp->modname, j);
1154     if (ofl < 0)
1155     error(USER, "bad output file specification");
1156     oent = lu_find(&ofiletab, oname);
1157 greg 1.31 if (oent->data != NULL) {
1158     sout = *(STREAMOUT *)oent->data;
1159     } else {
1160 greg 1.34 sout.reclen = CNT_UNKNOWN;
1161 greg 1.31 sout.ofp = NULL;
1162     }
1163     if (sout.ofp != NULL) { /* already open? */
1164 greg 1.14 if (ofl & OF_BIN)
1165     continue;
1166     break;
1167     }
1168     /* open output */
1169 greg 1.31 sout.ofp = fopen(oname, "rb+");
1170     if (sout.ofp == NULL) {
1171 greg 1.23 if (j)
1172     break; /* assume end of modifier */
1173     sprintf(errmsg, "missing recover file '%s'",
1174     oname);
1175     error(USER, errmsg);
1176     }
1177 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1178 greg 1.14 if (nvals <= 0) {
1179     lastout = 0; /* empty output, quit here */
1180 greg 1.31 fclose(sout.ofp);
1181 greg 1.14 break;
1182     }
1183 greg 1.32 if (sout.reclen == CNT_UNKNOWN) {
1184 greg 1.31 if (!(ofl & OF_BIN)) {
1185 greg 1.14 sprintf(errmsg,
1186 greg 1.32 "need -bn to recover file '%s'",
1187 greg 1.14 oname);
1188 greg 1.32 error(USER, errmsg);
1189 greg 1.14 }
1190 greg 1.31 recsiz = outvsiz;
1191     } else
1192     recsiz = outvsiz * sout.reclen;
1193    
1194     lseek(fileno(sout.ofp), 0, SEEK_SET);
1195     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1196     sprintf(errmsg, "format mismatch for '%s'",
1197     oname);
1198     error(USER, errmsg);
1199     }
1200     if ((xres > 0) & (yres > 0) &&
1201     (!fscnresolu(&xr, &yr, sout.ofp) ||
1202     xr != xres ||
1203     yr != yres)) {
1204     sprintf(errmsg, "resolution mismatch for '%s'",
1205     oname);
1206     error(USER, errmsg);
1207 greg 1.14 }
1208 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1209     if ((lastout < 0) | (nvals < lastout))
1210 greg 1.14 lastout = nvals;
1211 greg 1.31 if (oent->key == NULL) /* new entry */
1212 greg 1.14 oent->key = strcpy((char *)
1213     malloc(strlen(oname)+1), oname);
1214 greg 1.31 if (oent->data == NULL)
1215     oent->data = (char *)malloc(sizeof(STREAMOUT));
1216     *(STREAMOUT *)oent->data = sout;
1217 greg 1.14 if (!(ofl & OF_BIN))
1218     break; /* no bin separation */
1219     }
1220     if (!lastout) { /* empty output */
1221 greg 1.16 error(WARNING, "no previous data to recover");
1222 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1223     return;
1224     }
1225 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1226     ment->data = (char *)(mp = growmodifier(mp, j));
1227 greg 1.14 }
1228 greg 1.15 if (lastout < 0) {
1229 greg 1.16 error(WARNING, "no output files to recover");
1230 greg 1.15 return;
1231     }
1232 greg 1.24 if (raysleft && lastout >= raysleft) {
1233     error(WARNING, "output appears to be complete");
1234     /* XXX should read & discard input? */
1235     quit(0);
1236     }
1237 greg 1.14 /* seek on all files */
1238     nvals = lastout * outvsiz;
1239     lu_doall(&ofiletab, myseeko, &nvals);
1240 greg 1.28 /* skip repeated input */
1241 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1242 greg 1.36 if (getinp(oname, fin) < 0)
1243 greg 1.14 error(USER, "unexpected EOF on input");
1244     lastray = lastdone = (unsigned long)lastout;
1245     if (raysleft)
1246     raysleft -= lastray;
1247 greg 1.1 }