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root/radiance/ray/src/hd/rholo.c
Revision: 3.54
Committed: Thu May 29 16:26:22 2003 UTC (20 years, 10 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 3.53: +4 -5 lines
Log Message:
Changed beam offset from long to off_t, so holodecks can grow to max. length

File Contents

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