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root/radiance/ray/src/hd/rholo.c
Revision: 3.25
Committed: Sat Dec 13 10:30:56 1997 UTC (26 years, 4 months ago) by gregl
Content type: text/plain
Branch: MAIN
Changes since 3.24: +1 -5 lines
Log Message:
allow OBSTRUCTIONS to be undefined, and use random offset in that case

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