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root/radiance/ray/src/hd/rholo.c
Revision: 3.55
Committed: Sun Jun 8 12:03:10 2003 UTC (20 years, 9 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 3.54: +2 -1 lines
Log Message:
Reduced compile warnings/errors on Windows.

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rholo.c,v 3.54 2003/05/29 16:26:22 greg Exp $";
3 #endif
4 /*
5 * Radiance holodeck generation controller
6 */
7
8 #include "rholo.h"
9 #include "random.h"
10 #include <signal.h>
11 #include <sys/stat.h>
12
13 #ifndef FRAGWARN
14 #define FRAGWARN 20 /* fragmentation for warning (%) */
15 #endif
16 #ifndef MAXQTIME
17 #define MAXQTIME 5 /* target maximum seconds in queue */
18 #endif
19 /* manual cache flushing frequency */
20 #ifndef RTFLUSH
21 #if MAXQTIME
22 #define RTFLUSH (300/MAXQTIME*totqlen) /* <= 5 minutes */
23 #else
24 #define RTFLUSH (50*totqlen) /* just guess */
25 #endif
26 #endif
27 /* the following must be consistent with rholo.h */
28 int NVARS = NRHVARS; /* total number of variables */
29
30 VARIABLE vv[] = RHVINIT; /* variable-value pairs */
31
32 char *progname; /* our program name */
33 char *hdkfile; /* holodeck file name */
34 char froot[256]; /* root file name */
35
36 int ncprocs = 0; /* desired number of compute processes */
37
38 char *outdev = NULL; /* output device name */
39
40 int readinp = 0; /* read commands from stdin */
41
42 int force = 0; /* allow overwrite of holodeck (-1 == read-only) */
43
44 time_t starttime; /* time we got started */
45 time_t endtime; /* time we should end by */
46 time_t reporttime; /* time for next report */
47
48 off_t maxdisk; /* maximum file space (bytes) */
49
50 int rtargc = 1; /* rtrace command */
51 char *rtargv[128] = {"rtrace", NULL};
52
53 int orig_mode = -1; /* original file mode (-1 if unchanged) */
54
55 long nraysdone = 0L; /* number of rays done */
56 long npacksdone = 0L; /* number of packets done */
57
58 PACKET *freepacks; /* available packets */
59 int totqlen; /* maximum queue length (number of packets) */
60
61 char *sigerr[NSIG]; /* signal error messages */
62
63 extern int nowarn; /* turn warnings off? */
64
65 extern time_t time();
66
67
68 main(argc, argv)
69 int argc;
70 char *argv[];
71 {
72 int i;
73
74 initurand(16384); /* initialize urand */
75 progname = argv[0]; /* get arguments */
76 for (i = 1; i < argc && argv[i][0] == '-'; i++)
77 switch (argv[i][1]) {
78 case 'w': /* turn off warnings */
79 nowarn++;
80 break;
81 case 'f': /* force overwrite */
82 force = 1;
83 break;
84 case 'r': /* read-only mode */
85 force = -1;
86 break;
87 case 'i': /* read input from stdin */
88 readinp++;
89 break;
90 case 'n': /* compute processes */
91 if (i >= argc-2)
92 goto userr;
93 ncprocs = atoi(argv[++i]);
94 break;
95 case 'o': /* output display */
96 if (i >= argc-2)
97 goto userr;
98 outdev = argv[++i];
99 break;
100 default:
101 goto userr;
102 }
103 /* get root file name */
104 if (i >= argc)
105 goto userr;
106 rootname(froot, hdkfile=argv[i++]);
107 /* load variables? */
108 if (i < argc)
109 if (argv[i][0] != '-' && argv[i][0] != '+')
110 loadvars(argv[i]); /* load variables from file */
111
112 if (i >= argc || argv[i][0] == '+')
113 loadholo(); /* load existing holodeck */
114
115 while (++i < argc) /* get command line settings */
116 if (setvariable(argv[i], matchvar) < 0) {
117 sprintf(errmsg, "unknown variable: %s", argv[i]);
118 error(USER, errmsg);
119 }
120 /* check settings */
121 checkvalues();
122 /* load rad input file */
123 getradfile();
124
125 if (hdlist[0] == NULL) { /* create new holodeck */
126 HDGRID hdg[HDMAX];
127 /* set defaults */
128 setdefaults(hdg);
129 /* check read-only */
130 if (force < 0)
131 error(USER, "cannot create read-only holodeck");
132 /* holodeck exists? */
133 if (!force && access(hdkfile, R_OK|W_OK) == 0)
134 error(USER,
135 "holodeck file exists -- use -f to overwrite");
136 /* create holodeck */
137 creatholo(hdg);
138 } else /* else just set defaults */
139 setdefaults(NULL);
140 /* initialize */
141 initrholo();
142 /* main loop */
143 while (rholo())
144 ;
145 /* done */
146 quit(0);
147 userr:
148 fprintf(stderr,
149 "Usage: %s [-n nprocs][-o disp][-w][-r|-f] output.hdk [control.hif|+|- [VAR=val ..]]\n",
150 progname);
151 quit(1);
152 }
153
154
155 void
156 onsig(signo) /* fatal signal */
157 int signo;
158 {
159 static int gotsig = 0;
160
161 if (gotsig > 1) /* we're going as fast as we can! */
162 return;
163 if (gotsig++) { /* two signals and we split */
164 hdsync(NULL, 0); /* don't leave w/o saying goodbye */
165 _exit(signo);
166 }
167 alarm(300); /* allow 5 minutes to clean up */
168 eputs("signal - ");
169 eputs(sigerr[signo]);
170 eputs("\n");
171 quit(3);
172 }
173
174
175 sigdie(signo, msg) /* set fatal signal */
176 int signo;
177 char *msg;
178 {
179 if (signal(signo, onsig) == SIG_IGN)
180 signal(signo, SIG_IGN);
181 sigerr[signo] = msg;
182 }
183
184
185 int
186 resfmode(fd, mod) /* restrict open file access mode */
187 int fd, mod;
188 {
189 struct stat stbuf;
190 /* get original mode */
191 if (fstat(fd, &stbuf) < 0)
192 error(SYSTEM, "cannot stat open holodeck file");
193 mod &= stbuf.st_mode; /* always more restrictive */
194 if (mod == (stbuf.st_mode & 0777))
195 return(-1); /* already set */
196 /* else change it */
197 if (fchmod(fd, mod) < 0) {
198 error(WARNING, "cannot change holodeck file access mode");
199 return(-1);
200 }
201 return(stbuf.st_mode); /* return original mode */
202 }
203
204
205 initrholo() /* get our holodeck running */
206 {
207 extern int global_packet();
208 register int i;
209 /* close holodeck on exec() */
210 fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC);
211
212 if (outdev != NULL) /* open output device */
213 disp_open(outdev);
214 else if (ncprocs > 0) /* else use global ray feed */
215 init_global();
216 /* record disk space limit */
217 if (!vdef(DISKSPACE))
218 maxdisk = (1L<<(sizeof(off_t)*8-2)) - 1024;
219 else
220 maxdisk = 1024.*1024.*vflt(DISKSPACE);
221 /* set up memory cache */
222 if (outdev == NULL)
223 hdcachesize = 0; /* manual flushing */
224 else if (vdef(CACHE))
225 hdcachesize = 1024.*1024.*vflt(CACHE);
226 /* open report file */
227 if (vdef(REPORT)) {
228 register char *s = sskip2(vval(REPORT), 1);
229 if (*s && freopen(s, "a", stderr) == NULL)
230 quit(2);
231 }
232 /* mark the starting time */
233 starttime = time(NULL);
234 /* compute end time */
235 if (!vdef(TIME) || vflt(TIME) <= FTINY)
236 endtime = 0;
237 else
238 endtime = starttime + vflt(TIME)*3600. + .5;
239 /* start rtrace */
240 if (ncprocs > 0) {
241 totqlen = i = start_rtrace();
242 if (i < 1)
243 error(USER, "cannot start rtrace process(es)");
244 if (vdef(REPORT)) { /* make first report */
245 printargs(rtargc, rtargv, stderr);
246 report(0);
247 }
248 /* allocate packets */
249 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
250 if (freepacks == NULL)
251 goto memerr;
252 freepacks[--i].nr = 0;
253 freepacks[i].next = NULL;
254 if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
255 freepacks[i].offset = (float *)bmalloc(
256 RPACKSIZ*sizeof(float)*(i+1) );
257 if (freepacks[i].offset == NULL)
258 goto memerr;
259 } else
260 freepacks[i].offset = NULL;
261 while (i--) {
262 freepacks[i].nr = 0;
263 freepacks[i].offset = freepacks[i+1].offset == NULL ?
264 NULL : freepacks[i+1].offset+RPACKSIZ ;
265 freepacks[i].next = &freepacks[i+1];
266 }
267 }
268 /* set up signal handling */
269 sigdie(SIGINT, "Interrupt");
270 sigdie(SIGHUP, "Hangup");
271 sigdie(SIGTERM, "Terminate");
272 sigdie(SIGPIPE, "Broken pipe");
273 sigdie(SIGALRM, "Alarm clock");
274 #ifdef SIGXCPU
275 sigdie(SIGXCPU, "CPU limit exceeded");
276 sigdie(SIGXFSZ, "File size exceeded");
277 #endif
278 /* protect holodeck file */
279 orig_mode = resfmode(hdlist[0]->fd, ncprocs>0&force>=0 ? 0 : 0444);
280 return;
281 memerr:
282 error(SYSTEM, "out of memory in initrholo");
283 }
284
285
286 rholo() /* holodeck main loop */
287 {
288 static long nextfragwarn = 100*(1L<<20);
289 static int idle = 0;
290 PACKET *pl = NULL, *plend;
291 off_t fsiz;
292 int pksiz;
293 register PACKET *p;
294 time_t t;
295 /* check display */
296 if (nprocs <= 0)
297 idle = 1;
298 if (outdev != NULL) {
299 if (!disp_check(idle))
300 return(0); /* quit request */
301 if (nprocs <= 0)
302 return(1);
303 } else if (idle)
304 return(0); /* all done */
305 fsiz = hdfilen(hdlist[0]->fd); /* check file size */
306 if (maxdisk > 0 && fsiz >= maxdisk) {
307 error(WARNING, "file limit exceeded");
308 done_rtrace();
309 return(1); /* comes back */
310 }
311 #if FRAGWARN
312 if (fsiz >= nextfragwarn &&
313 (fsiz-hdfiluse(hdlist[0]->fd,0))/(fsiz/100) > FRAGWARN) {
314 sprintf(errmsg, "holodeck file fragmentation is %.0f%%",
315 100.*(fsiz-hdfiluse(hdlist[0]->fd,1))/fsiz);
316 error(WARNING, errmsg);
317 nextfragwarn = fsiz + (fsiz>>2); /* decent interval */
318 }
319 #endif
320 t = time(NULL); /* check time */
321 if (endtime > 0 && t >= endtime) {
322 error(WARNING, "time limit exceeded");
323 done_rtrace();
324 return(1); /* comes back */
325 }
326 if (reporttime > 0 && t >= reporttime)
327 report(t);
328 /* figure out good packet size */
329 pksiz = RPACKSIZ;
330 #if MAXQTIME
331 if (!chunkycmp) {
332 pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L));
333 if (pksiz < 1) pksiz = 1;
334 else if (pksiz > RPACKSIZ) pksiz = RPACKSIZ;
335 }
336 #endif
337 idle = 0; /* get packets to process */
338 while (freepacks != NULL) {
339 p = freepacks; freepacks = p->next; p->next = NULL;
340 if (!next_packet(p, pksiz)) {
341 p->next = freepacks; freepacks = p;
342 idle = 1;
343 break;
344 }
345 if (pl == NULL) pl = p;
346 else plend->next = p;
347 plend = p;
348 }
349 /* process packets */
350 done_packets(do_packets(pl));
351 return(1); /* and continue */
352 }
353
354
355 setdefaults(gp) /* set default values */
356 register HDGRID *gp;
357 {
358 extern char *atos();
359 register int i;
360 int n;
361 double len[3], d;
362 char buf[64];
363
364 if (!vdef(SECTION)) {
365 sprintf(errmsg, "%s must be defined", vnam(SECTION));
366 error(USER, errmsg);
367 }
368 if (!vdef(OCTREE)) {
369 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
370 error(SYSTEM, "out of memory");
371 sprintf(vval(OCTREE), "%s.oct", froot);
372 vdef(OCTREE)++;
373 }
374 if (!vdef(VDIST)) {
375 vval(VDIST) = "F";
376 vdef(VDIST)++;
377 }
378 /* append rendering options */
379 if (vdef(RENDER))
380 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
381
382 if (gp == NULL) /* already initialized? */
383 return;
384 /* set grid parameters */
385 for (n = 0; n < vdef(SECTION); n++, gp++) {
386 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
387 if (sscanf(nvalue(SECTION, n),
388 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
389 &gp->orig[0], &gp->orig[1], &gp->orig[2],
390 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
391 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
392 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
393 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
394 badvalue(SECTION);
395 for (i = 0; i < 3; i++)
396 len[i] = VLEN(gp->xv[i]);
397 if (!vdef(GRID)) {
398 d = 2/2e5*( len[0]*len[0]*(len[1]*len[1] +
399 len[2]*len[2] + 4*len[1]*len[2])
400 + len[1]*len[1]*len[2]*(len[2] + 4*len[0])
401 + 4*len[0]*len[1]*len[2]*len[2] );
402 d = sqrt(sqrt(d));
403 } else if ((d = vflt(GRID)) <= FTINY)
404 badvalue(GRID);
405 for (i = 0; i < 3; i++)
406 if (gp->grid[i] <= 0)
407 gp->grid[i] = len[i]/d + (1.-FTINY);
408 }
409 }
410
411
412 creatholo(gp) /* create a holodeck output file */
413 HDGRID *gp;
414 {
415 extern char VersionID[];
416 int4 lastloc, nextloc;
417 int n;
418 int fd;
419 FILE *fp;
420 /* open & truncate file */
421 if ((fp = fopen(hdkfile, "w+")) == NULL) {
422 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
423 error(SYSTEM, errmsg);
424 }
425 /* write information header */
426 newheader("RADIANCE", fp);
427 fprintf(fp, "SOFTWARE= %s\n", VersionID);
428 printvars(fp);
429 fputformat(HOLOFMT, fp);
430 fputc('\n', fp);
431 putw(HOLOMAGIC, fp); /* put magic number */
432 fd = dup(fileno(fp));
433 fclose(fp); /* flush and close stdio stream */
434 lastloc = lseek(fd, (off_t)0L, 2);
435 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
436 nextloc = 0L;
437 write(fd, (char *)&nextloc, sizeof(nextloc));
438 hdinit(fd, gp); /* writes beam index */
439 if (!n)
440 break;
441 nextloc = hdfilen(fd); /* write section pointer */
442 if (lseek(fd, (off_t)lastloc, 0) < 0)
443 error(SYSTEM,
444 "cannot seek on holodeck file in creatholo");
445 write(fd, (char *)&nextloc, sizeof(nextloc));
446 lseek(fd, (off_t)(lastloc=nextloc), 0);
447 }
448 }
449
450
451 int
452 headline(s) /* process information header line */
453 char *s;
454 {
455 extern char FMTSTR[];
456 register char *cp;
457 char fmt[32];
458
459 if (formatval(fmt, s)) {
460 if (strcmp(fmt, HOLOFMT)) {
461 sprintf(errmsg, "%s file \"%s\" has %s%s",
462 HOLOFMT, hdkfile, FMTSTR, fmt);
463 error(USER, errmsg);
464 }
465 return(0);
466 }
467 for (cp = s; *cp; cp++) /* take off any comments */
468 if (*cp == '#') {
469 *cp = '\0';
470 break;
471 }
472 setvariable(s, matchvar); /* don't flag errors */
473 return(0);
474 }
475
476
477 loadholo() /* start loading a holodeck from fname */
478 {
479 FILE *fp;
480 int fd;
481 int n;
482 int4 nextloc;
483
484 if (ncprocs > 0 & force >= 0)
485 fp = fopen(hdkfile, "r+");
486 else
487 fp = NULL;
488 if (fp == NULL) {
489 if ((fp = fopen(hdkfile, "r")) == NULL) {
490 sprintf(errmsg, "cannot open \"%s\"", hdkfile);
491 error(SYSTEM, errmsg);
492 }
493 if (ncprocs > 0) {
494 sprintf(errmsg,
495 "\"%s\" opened read-only; new rays will be discarded",
496 hdkfile);
497 error(WARNING, errmsg);
498 force = -1;
499 }
500 }
501 /* load variables from header */
502 getheader(fp, headline, NULL);
503 /* check magic number */
504 if (getw(fp) != HOLOMAGIC) {
505 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
506 hdkfile);
507 error(USER, errmsg);
508 }
509 nextloc = ftell(fp); /* get stdio position */
510 fd = dup(fileno(fp));
511 fclose(fp); /* done with stdio */
512 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
513 lseek(fd, (off_t)nextloc, 0);
514 read(fd, (char *)&nextloc, sizeof(nextloc));
515 hdinit(fd, NULL);
516 }
517 if (n != vdef(SECTION)) {
518 sprintf(errmsg, "number of sections does not match %s setting",
519 vnam(SECTION));
520 error(WARNING, errmsg);
521 }
522 }
523
524
525 done_packets(pl) /* handle finished packets */
526 PACKET *pl;
527 {
528 static int n2flush = 0;
529 register PACKET *p;
530
531 while (pl != NULL) {
532 p = pl; pl = p->next; p->next = NULL;
533 if (p->nr > 0) { /* add to holodeck */
534 bcopy((void *)p->ra,
535 (void *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
536 p->nr*sizeof(RAYVAL));
537 if (outdev != NULL) /* display it */
538 disp_packet((PACKHEAD *)p);
539 if (hdcachesize <= 0)
540 n2flush++;
541 nraysdone += p->nr;
542 npacksdone++;
543 p->nr = 0;
544 }
545 p->next = freepacks; /* push onto free list */
546 freepacks = p;
547 }
548 if (n2flush >= RTFLUSH) {
549 if (outdev != NULL)
550 hdsync(NULL, 1);
551 else
552 hdflush(NULL);
553 n2flush = 0;
554 }
555 }
556
557
558 rootname(rn, fn) /* remove tail from end of fn */
559 register char *rn, *fn;
560 {
561 char *tp, *dp;
562
563 for (tp = NULL, dp = rn; *rn = *fn++; rn++)
564 if (*rn == '/')
565 dp = rn;
566 else if (*rn == '.')
567 tp = rn;
568 if (tp != NULL && tp > dp)
569 *tp = '\0';
570 }
571
572
573 badvalue(vc) /* report bad variable value and exit */
574 int vc;
575 {
576 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
577 error(USER, errmsg);
578 }
579
580
581 void
582 eputs(s) /* put error message to stderr */
583 register char *s;
584 {
585 static int midline = 0;
586
587 if (!*s)
588 return;
589 if (!midline++) { /* prepend line with program name */
590 fputs(progname, stderr);
591 fputs(": ", stderr);
592 }
593 fputs(s, stderr);
594 if (s[strlen(s)-1] == '\n') {
595 fflush(stderr);
596 midline = 0;
597 }
598 }
599
600
601 void
602 quit(ec) /* exit program gracefully */
603 int ec;
604 {
605 int status = 0;
606
607 if (hdlist[0] != NULL) { /* close holodeck */
608 if (nprocs > 0)
609 status = done_rtrace(); /* calls hdsync() */
610 if (ncprocs > 0 & force >= 0 && vdef(REPORT)) {
611 off_t fsiz, fuse;
612 fsiz = hdfilen(hdlist[0]->fd);
613 fuse = hdfiluse(hdlist[0]->fd, 1);
614 fprintf(stderr,
615 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
616 hdkfile, fsiz/(1024.*1024.),
617 100.*(fsiz-fuse)/fsiz);
618 }
619 }
620 if (orig_mode >= 0) /* reset holodeck access mode */
621 fchmod(hdlist[0]->fd, orig_mode);
622 if (outdev != NULL) /* close display */
623 disp_close();
624 exit(ec ? ec : status); /* exit */
625 }