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root/radiance/ray/src/hd/rholo.c
Revision: 3.32
Committed: Mon Dec 22 11:06:53 1997 UTC (26 years, 4 months ago) by gregl
Content type: text/plain
Branch: MAIN
Changes since 3.31: +2 -0 lines
Log Message:
fixed core dump when run without arguments

File Contents

# Content
1 /* Copyright (c) 1997 Silicon Graphics, Inc. */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ SGI";
5 #endif
6
7 /*
8 * Radiance holodeck generation controller
9 */
10
11 #include "rholo.h"
12 #include "random.h"
13 #include <signal.h>
14 #include <sys/types.h>
15 #include <sys/stat.h>
16
17 /* the following must be consistent with rholo.h */
18 int NVARS = NRHVARS; /* total number of variables */
19
20 VARIABLE vv[] = RHVINIT; /* variable-value pairs */
21
22 char *progname; /* our program name */
23 char *hdkfile; /* holodeck file name */
24 char froot[256]; /* root file name */
25
26 int nowarn = 0; /* turn warnings off? */
27
28 int ncprocs = 0; /* desired number of compute processes */
29
30 char *outdev = NULL; /* output device name */
31
32 int readinp = 0; /* read commands from stdin */
33
34 int force = 0; /* allow overwrite of holodeck */
35
36 time_t starttime; /* time we got started */
37 time_t endtime; /* time we should end by */
38 time_t reporttime; /* time for next report */
39
40 long maxdisk; /* maximum file space (bytes) */
41
42 int rtargc = 1; /* rtrace command */
43 char *rtargv[128] = {"rtrace", NULL};
44
45 int orig_mode = -1; /* original file mode (-1 if unchanged) */
46
47 long nraysdone = 0L; /* number of rays done */
48 long npacksdone = 0L; /* number of packets done */
49
50 PACKET *freepacks; /* available packets */
51
52 char *sigerr[NSIG]; /* signal error messages */
53
54 extern time_t time();
55
56
57 main(argc, argv)
58 int argc;
59 char *argv[];
60 {
61 int i;
62 /* mark start time */
63 starttime = time(NULL);
64 initurand(16384); /* initialize urand */
65 progname = argv[0]; /* get arguments */
66 for (i = 1; i < argc && argv[i][0] == '-'; i++)
67 switch (argv[i][1]) {
68 case 'w': /* turn off warnings */
69 nowarn++;
70 break;
71 case 'f': /* force overwrite */
72 force++;
73 break;
74 case 'i': /* read input from stdin */
75 readinp++;
76 break;
77 case 'n': /* compute processes */
78 if (i >= argc-2)
79 goto userr;
80 ncprocs = atoi(argv[++i]);
81 break;
82 case 'o': /* output display */
83 if (i >= argc-2)
84 goto userr;
85 outdev = argv[++i];
86 break;
87 default:
88 goto userr;
89 }
90 /* get root file name */
91 if (i >= argc)
92 goto userr;
93 rootname(froot, hdkfile=argv[i++]);
94 /* load variables? */
95 if (i < argc)
96 if (argv[i][0] != '-' && argv[i][0] != '+')
97 loadvars(argv[i]); /* load variables from file */
98
99 if (i >= argc || argv[i][0] == '+')
100 loadholo(); /* load existing holodeck */
101
102 while (++i < argc) /* get command line settings */
103 if (setvariable(argv[i], matchvar) < 0) {
104 sprintf(errmsg, "unknown variable: %s", argv[i]);
105 error(USER, errmsg);
106 }
107 /* check settings */
108 checkvalues();
109 /* load RIF if any */
110 getradfile();
111
112 if (hdlist[0] == NULL) { /* create new holodeck */
113 HDGRID hdg[HDMAX];
114 /* set defaults */
115 setdefaults(hdg);
116 /* holodeck exists? */
117 if (!force && access(hdkfile, R_OK|W_OK) == 0)
118 error(USER,
119 "holodeck file exists -- use -f to overwrite");
120 /* create holodeck */
121 creatholo(hdg);
122 } else /* else just set defaults */
123 setdefaults(NULL);
124 /* initialize */
125 initrholo();
126 /* main loop */
127 while (rholo())
128 ;
129 /* done */
130 quit(0);
131 userr:
132 fprintf(stderr,
133 "Usage: %s [-n nprocs][-o disp][-w][-f] output.hdk [control.hif|+|- [VAR=val ..]]\n",
134 progname);
135 quit(1);
136 }
137
138
139 onsig(signo) /* fatal signal */
140 int signo;
141 {
142 static int gotsig = 0;
143
144 if (gotsig++) /* two signals and we're gone! */
145 _exit(signo);
146
147 alarm(60); /* allow 60 seconds to clean up */
148 signal(SIGALRM, SIG_DFL); /* make certain we do die */
149 eputs("signal - ");
150 eputs(sigerr[signo]);
151 eputs("\n");
152 quit(3);
153 }
154
155
156 sigdie(signo, msg) /* set fatal signal */
157 int signo;
158 char *msg;
159 {
160 if (signal(signo, onsig) == SIG_IGN)
161 signal(signo, SIG_IGN);
162 sigerr[signo] = msg;
163 }
164
165
166 int
167 resfmode(fd, mod) /* restrict open file access mode */
168 int fd, mod;
169 {
170 struct stat stbuf;
171 /* get original mode */
172 if (fstat(fd, &stbuf) < 0)
173 error(SYSTEM, "cannot stat open holodeck file");
174 mod &= stbuf.st_mode; /* always more restrictive */
175 if (mod == stbuf.st_mode)
176 return(-1); /* already set */
177 /* else change it */
178 if (fchmod(fd, mod) < 0) {
179 error(WARNING, "cannot change holodeck file access mode");
180 return(-1);
181 }
182 return(stbuf.st_mode); /* return original mode */
183 }
184
185
186 initrholo() /* get our holodeck running */
187 {
188 extern int global_packet();
189 register int i;
190 /* close holodeck on exec() */
191 fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC);
192
193 if (outdev != NULL) /* open output device */
194 disp_open(outdev);
195 else if (ncprocs > 0) /* else use global ray feed */
196 init_global();
197 /* record disk space limit */
198 if (!vdef(DISKSPACE))
199 maxdisk = 0;
200 else
201 maxdisk = 1024.*1024.*vflt(DISKSPACE);
202 /* record end time */
203 if (!vdef(TIME) || vflt(TIME) <= FTINY)
204 endtime = 0;
205 else
206 endtime = starttime + vflt(TIME)*3600. + .5;
207 /* set up memory cache */
208 if (outdev == NULL)
209 hdcachesize = 0; /* manual flushing */
210 else if (vdef(CACHE))
211 hdcachesize = 1024.*1024.*vflt(CACHE);
212 /* open report file */
213 if (vdef(REPORT)) {
214 register char *s = sskip2(vval(REPORT), 1);
215 if (*s && freopen(s, "a", stderr) == NULL)
216 quit(2);
217 }
218 /* start rtrace */
219 if (ncprocs > 0) {
220 i = start_rtrace();
221 if (i < 1)
222 error(USER, "cannot start rtrace process(es)");
223 if (vdef(REPORT)) { /* make first report */
224 printargs(rtargc, rtargv, stderr);
225 report(0);
226 }
227 /* allocate packets */
228 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
229 if (freepacks == NULL)
230 goto memerr;
231 freepacks[--i].nr = 0;
232 freepacks[i].next = NULL;
233 if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
234 freepacks[i].offset = (float *)bmalloc(
235 RPACKSIZ*sizeof(float)*(i+1) );
236 if (freepacks[i].offset == NULL)
237 goto memerr;
238 } else
239 freepacks[i].offset = NULL;
240 while (i--) {
241 freepacks[i].nr = 0;
242 freepacks[i].offset = freepacks[i+1].offset == NULL ?
243 NULL : freepacks[i+1].offset+RPACKSIZ ;
244 freepacks[i].next = &freepacks[i+1];
245 }
246 }
247 /* set up signal handling */
248 sigdie(SIGINT, "Interrupt");
249 sigdie(SIGHUP, "Hangup");
250 sigdie(SIGTERM, "Terminate");
251 sigdie(SIGPIPE, "Broken pipe");
252 sigdie(SIGALRM, "Alarm clock");
253 #ifdef SIGXCPU
254 sigdie(SIGXCPU, "CPU limit exceeded");
255 sigdie(SIGXFSZ, "File size exceeded");
256 #endif
257 /* protect holodeck file */
258 orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444);
259 return;
260 memerr:
261 error(SYSTEM, "out of memory in initrholo");
262 }
263
264
265 rholo() /* holodeck main loop */
266 {
267 static int idle = 0;
268 PACKET *pl = NULL, *plend;
269 register PACKET *p;
270 time_t t;
271 long l;
272 /* check display */
273 if (nprocs <= 0)
274 idle = 1;
275 if (outdev != NULL) {
276 if (!disp_check(idle))
277 return(0); /* quit request */
278 if (nprocs <= 0)
279 return(1);
280 } else if (idle)
281 return(0); /* all done */
282 /* check file size */
283 if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) {
284 error(WARNING, "file limit exceeded");
285 done_rtrace();
286 return(1); /* comes back */
287 }
288 /* check time */
289 if (endtime > 0 || reporttime > 0)
290 t = time(NULL);
291 if (endtime > 0 && t >= endtime) {
292 error(WARNING, "time limit exceeded");
293 done_rtrace();
294 return(1); /* comes back */
295 }
296 if (reporttime > 0 && t >= reporttime)
297 report(t);
298 idle = 0; /* get packets to process */
299 while (freepacks != NULL) {
300 p = freepacks; freepacks = p->next; p->next = NULL;
301 if (!next_packet(p)) {
302 p->next = freepacks; freepacks = p;
303 idle = 1;
304 break;
305 }
306 if (pl == NULL) pl = p;
307 else plend->next = p;
308 plend = p;
309 }
310 /* process packets */
311 done_packets(do_packets(pl));
312 return(1); /* and continue */
313 }
314
315
316 setdefaults(gp) /* set default values */
317 register HDGRID *gp;
318 {
319 extern char *atos();
320 register int i;
321 int n;
322 double len[3], maxlen, d;
323 char buf[64];
324
325 if (!vdef(SECTION)) {
326 sprintf(errmsg, "%s must be defined", vnam(SECTION));
327 error(USER, errmsg);
328 }
329 if (!vdef(OCTREE)) {
330 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
331 error(SYSTEM, "out of memory");
332 sprintf(vval(OCTREE), "%s.oct", froot);
333 vdef(OCTREE)++;
334 }
335 if (!vdef(VDIST)) {
336 vval(VDIST) = "F";
337 vdef(VDIST)++;
338 }
339 /* append rendering options */
340 if (vdef(RENDER))
341 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
342
343 if (gp == NULL) /* already initialized? */
344 return;
345 /* set grid parameters */
346 for (n = 0; n < vdef(SECTION); n++, gp++) {
347 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
348 if (sscanf(nvalue(SECTION, n),
349 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
350 &gp->orig[0], &gp->orig[1], &gp->orig[2],
351 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
352 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
353 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
354 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
355 badvalue(SECTION);
356 maxlen = 0.;
357 for (i = 0; i < 3; i++)
358 if ((len[i] = VLEN(gp->xv[i])) > maxlen)
359 maxlen = len[i];
360 if (!vdef(GRID))
361 d = 0.125*maxlen;
362 else if ((d = vflt(GRID)) <= FTINY)
363 badvalue(GRID);
364 for (i = 0; i < 3; i++)
365 if (gp->grid[i] <= 0)
366 gp->grid[i] = len[i]/d + (1.-FTINY);
367 }
368 }
369
370
371 creatholo(gp) /* create a holodeck output file */
372 HDGRID *gp;
373 {
374 extern char VersionID[];
375 int4 lastloc, nextloc;
376 int n;
377 int fd;
378 FILE *fp;
379 /* open & truncate file */
380 if ((fp = fopen(hdkfile, "w+")) == NULL) {
381 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
382 error(SYSTEM, errmsg);
383 }
384 /* write information header */
385 newheader("RADIANCE", fp);
386 fprintf(fp, "SOFTWARE= %s\n", VersionID);
387 printvars(fp);
388 fputformat(HOLOFMT, fp);
389 fputc('\n', fp);
390 putw(HOLOMAGIC, fp); /* put magic number */
391 fd = dup(fileno(fp));
392 fclose(fp); /* flush and close stdio stream */
393 lastloc = lseek(fd, 0L, 2);
394 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
395 nextloc = 0L;
396 write(fd, (char *)&nextloc, sizeof(nextloc));
397 hdinit(fd, gp); /* writes beam index */
398 if (!n)
399 break;
400 nextloc = hdfilen(fd); /* write section pointer */
401 if (lseek(fd, (long)lastloc, 0) < 0)
402 error(SYSTEM,
403 "cannot seek on holodeck file in creatholo");
404 write(fd, (char *)&nextloc, sizeof(nextloc));
405 lseek(fd, (long)(lastloc=nextloc), 0);
406 }
407 }
408
409
410 headline(s) /* process information header line */
411 char *s;
412 {
413 extern char FMTSTR[];
414 register char *cp;
415 char fmt[32];
416
417 if (formatval(fmt, s)) {
418 if (strcmp(fmt, HOLOFMT)) {
419 sprintf(errmsg, "%s file \"%s\" has %s%s",
420 HOLOFMT, hdkfile, FMTSTR, fmt);
421 error(USER, errmsg);
422 }
423 return;
424 }
425 for (cp = s; *cp; cp++) /* take off any comments */
426 if (*cp == '#') {
427 *cp = '\0';
428 break;
429 }
430 setvariable(s, matchvar); /* don't flag errors */
431 }
432
433
434 loadholo() /* start loading a holodeck from fname */
435 {
436 extern long ftell();
437 FILE *fp;
438 int fd;
439 int n;
440 int4 nextloc;
441 /* open holodeck file */
442 if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) {
443 sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile,
444 ncprocs>0 ? "appending" : "reading");
445 error(SYSTEM, errmsg);
446 }
447 /* load variables from header */
448 getheader(fp, headline, NULL);
449 /* check magic number */
450 if (getw(fp) != HOLOMAGIC) {
451 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
452 hdkfile);
453 error(USER, errmsg);
454 }
455 nextloc = ftell(fp); /* get stdio position */
456 fd = dup(fileno(fp));
457 fclose(fp); /* done with stdio */
458 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
459 lseek(fd, (long)nextloc, 0);
460 read(fd, (char *)&nextloc, sizeof(nextloc));
461 hdinit(fd, NULL);
462 }
463 if (n != vdef(SECTION)) {
464 sprintf(errmsg, "number of sections does not match %s setting",
465 vnam(SECTION));
466 error(WARNING, errmsg);
467 }
468 }
469
470
471 done_packets(pl) /* handle finished packets */
472 PACKET *pl;
473 {
474 static int n2flush = 0;
475 register PACKET *p;
476
477 while (pl != NULL) {
478 p = pl; pl = p->next; p->next = NULL;
479 if (p->nr > 0) { /* add to holodeck */
480 bcopy((char *)p->ra,
481 (char *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
482 p->nr*sizeof(RAYVAL));
483 if (outdev != NULL) /* display it */
484 disp_packet((PACKHEAD *)p);
485 if (hdcachesize <= 0) /* manual flushing */
486 n2flush += p->nr;
487 nraysdone += p->nr;
488 npacksdone++;
489 }
490 p->nr = 0; /* push onto free list */
491 p->next = freepacks;
492 freepacks = p;
493 }
494 if (n2flush > 1024*RPACKSIZ*nprocs) {
495 hdflush(NULL); /* flush holodeck buffers */
496 n2flush = 0;
497 }
498 }
499
500
501 rootname(rn, fn) /* remove tail from end of fn */
502 register char *rn, *fn;
503 {
504 char *tp, *dp;
505
506 for (tp = NULL, dp = rn; *rn = *fn++; rn++)
507 if (*rn == '/')
508 dp = rn;
509 else if (*rn == '.')
510 tp = rn;
511 if (tp != NULL && tp > dp)
512 *tp = '\0';
513 }
514
515
516 badvalue(vc) /* report bad variable value and exit */
517 int vc;
518 {
519 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
520 error(USER, errmsg);
521 }
522
523
524 eputs(s) /* put error message to stderr */
525 register char *s;
526 {
527 static int midline = 0;
528
529 if (!*s)
530 return;
531 if (!midline++) { /* prepend line with program name */
532 fputs(progname, stderr);
533 fputs(": ", stderr);
534 }
535 fputs(s, stderr);
536 if (s[strlen(s)-1] == '\n') {
537 fflush(stderr);
538 midline = 0;
539 }
540 }
541
542
543 wputs(s) /* put warning string to stderr */
544 char *s;
545 {
546 if (!nowarn)
547 eputs(s);
548 }
549
550
551 quit(ec) /* exit program gracefully */
552 int ec;
553 {
554 int status = 0;
555
556 if (hdlist[0] != NULL) { /* close holodeck */
557 if (nprocs > 0)
558 status = done_rtrace(); /* calls hdsync() */
559 if (ncprocs > 0 && vdef(REPORT)) {
560 long fsiz, fuse;
561 fsiz = hdfilen(hdlist[0]->fd);
562 fuse = hdfiluse(hdlist[0]->fd, 1);
563 fprintf(stderr,
564 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
565 hdkfile, fsiz/(1024.*1024.),
566 100.*(fsiz-fuse)/fsiz);
567 }
568 }
569 if (orig_mode >= 0) /* reset holodeck access mode */
570 fchmod(hdlist[0]->fd, orig_mode);
571 if (outdev != NULL) /* close display */
572 disp_close();
573 exit(ec ? ec : status); /* exit */
574 }