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root/radiance/ray/src/hd/rholo.c
Revision: 3.74
Committed: Fri Dec 5 00:22:33 2008 UTC (15 years, 3 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad4R0
Changes since 3.73: +2 -2 lines
Log Message:
Added missing -i from Usage: message

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rholo.c,v 3.73 2008/12/04 23:34:00 greg Exp $";
3 #endif
4 /*
5 * Radiance holodeck generation controller
6 */
7
8 #include <stdio.h>
9 #include <time.h>
10 #include <signal.h>
11 #include <sys/stat.h>
12 #include <string.h>
13
14 #include "platform.h"
15 #include "rterror.h"
16 #include "resolu.h"
17 #include "rholo.h"
18 #include "random.h"
19
20 #ifndef FRAGWARN
21 #define FRAGWARN 20 /* fragmentation for warning (%) */
22 #endif
23 #ifndef MAXQTIME
24 #define MAXQTIME 3 /* target maximum seconds in queue */
25 #endif
26 /* manual cache flushing frequency */
27 #ifndef RTFLUSH
28 #if MAXQTIME
29 #define RTFLUSH (300/MAXQTIME*totqlen) /* <= 5 minutes */
30 #else
31 #define RTFLUSH (50*totqlen) /* just guess */
32 #endif
33 #endif
34 /* the following must be consistent with rholo.h */
35 int NVARS = NRHVARS; /* total number of variables */
36
37 VARIABLE vv[] = RHVINIT; /* variable-value pairs */
38
39 char *progname; /* our program name */
40 char *hdkfile; /* holodeck file name */
41 char froot[256]; /* root file name */
42
43 int ncprocs = 0; /* desired number of compute processes */
44
45 char *outdev = NULL; /* output device name */
46
47 int readinp = 0; /* read commands from stdin */
48
49 int force = 0; /* allow overwrite of holodeck (-1 == read-only) */
50
51 time_t starttime; /* time we got started */
52 time_t endtime; /* time we should end by */
53 time_t reporttime; /* time for next report */
54
55 off_t maxdisk; /* maximum file space (bytes) */
56
57 int rtargc = 1; /* rtrace command */
58 char *rtargv[128] = {"rtrace", NULL};
59
60 int orig_mode = -1; /* original file mode (-1 if unchanged) */
61
62 long nraysdone = 0L; /* number of rays done */
63 long npacksdone = 0L; /* number of packets done */
64
65 PACKET *freepacks; /* available packets */
66 int totqlen; /* maximum queue length (number of packets) */
67
68 char *sigerr[NSIG]; /* signal error messages */
69
70 extern int nowarn; /* turn warnings off? */
71
72 static void onsig(int signo);
73 static void sigdie(int signo, char *msg);
74 static int resfmode(int fd, int mod);
75 static void initrholo(void);
76 static int rholo(void);
77 static void setdefaults(HDGRID *gp);
78 static void creatholo(HDGRID *gp);
79 static gethfunc headline;
80 static void loadholo(void);
81 static void rootname(char *rn, char *fn);
82 static void badvalue(int vc);
83
84
85 int
86 main(
87 int argc,
88 char *argv[]
89 )
90 {
91 int i;
92
93 progname = argv[0]; /* get arguments */
94 for (i = 1; i < argc && argv[i][0] == '-'; i++)
95 switch (argv[i][1]) {
96 case 'w': /* turn off warnings */
97 nowarn++;
98 break;
99 case 'f': /* force overwrite */
100 force = 1;
101 break;
102 case 'r': /* read-only mode */
103 force = -1;
104 break;
105 case 'i': /* read input from stdin */
106 readinp++;
107 break;
108 case 'n': /* compute processes */
109 if (i >= argc-2)
110 goto userr;
111 ncprocs = atoi(argv[++i]);
112 break;
113 case 'o': /* output display */
114 if (i >= argc-2)
115 goto userr;
116 outdev = argv[++i];
117 break;
118 default:
119 goto userr;
120 }
121 /* get root file name */
122 if (i >= argc)
123 goto userr;
124 rootname(froot, hdkfile=argv[i++]);
125 /* load variables? */
126 if (i < argc)
127 if (argv[i][0] != '-' && argv[i][0] != '+')
128 loadvars(argv[i]); /* load variables from file */
129
130 if (i >= argc || argv[i][0] == '+')
131 loadholo(); /* load existing holodeck */
132
133 while (++i < argc) /* get command line settings */
134 if (setvariable(argv[i], matchvar) < 0) {
135 sprintf(errmsg, "unknown variable: %s", argv[i]);
136 error(USER, errmsg);
137 }
138 /* check settings */
139 checkvalues();
140 /* load rad input file */
141 getradfile();
142
143 if (hdlist[0] == NULL) { /* create new holodeck */
144 HDGRID hdg[HDMAX];
145 /* set defaults */
146 setdefaults(hdg);
147 /* check read-only */
148 if (force < 0)
149 error(USER, "cannot create read-only holodeck");
150 /* holodeck exists? */
151 if (!force && access(hdkfile, R_OK|W_OK) == 0)
152 error(USER,
153 "holodeck file exists -- use -f to overwrite");
154 /* create holodeck */
155 creatholo(hdg);
156 } else /* else just set defaults */
157 setdefaults(NULL);
158 /* initialize */
159 initrholo();
160 /* main loop */
161 while (rholo())
162 ;
163 /* done */
164 quit(0);
165 userr:
166 fprintf(stderr,
167 "Usage: %s [-n nprocs][-o disp][-i][-w][-r|-f] output.hdk [control.hif|+|- [VAR=val ..]]\n",
168 progname);
169 quit(1);
170 return 1; /* pro forma return */
171 }
172
173
174 static void
175 onsig( /* fatal signal */
176 int signo
177 )
178 {
179 static int gotsig = 0;
180
181 if (gotsig > 1) /* we're going as fast as we can! */
182 return;
183 if (gotsig++) { /* two signals and we split */
184 hdsync(NULL, 0); /* don't leave w/o saying goodbye */
185 _exit(signo);
186 }
187 alarm(300); /* allow 5 minutes to clean up */
188 eputs("signal - ");
189 eputs(sigerr[signo]);
190 eputs("\n");
191 quit(3);
192 }
193
194
195 static void
196 sigdie( /* set fatal signal */
197 int signo,
198 char *msg
199 )
200 {
201 if (signal(signo, onsig) == SIG_IGN)
202 signal(signo, SIG_IGN);
203 sigerr[signo] = msg;
204 }
205
206
207 static int
208 resfmode( /* restrict open file access mode */
209 int fd,
210 int mod
211 )
212 {
213 struct stat stbuf;
214 /* get original mode */
215 if (fstat(fd, &stbuf) < 0)
216 error(SYSTEM, "cannot stat open holodeck file");
217 mod &= stbuf.st_mode; /* always more restrictive */
218 if (mod == (stbuf.st_mode & 0777))
219 return(-1); /* already set */
220 /* else change it */
221 if (fchmod(fd, mod) < 0) {
222 error(WARNING, "cannot change holodeck file access mode");
223 return(-1);
224 }
225 return(stbuf.st_mode); /* return original mode */
226 }
227
228
229 static void
230 initrholo(void) /* get our holodeck running */
231 {
232 extern int global_packet();
233 register int i;
234 /* close holodeck on exec() */
235 fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC);
236
237 if (outdev != NULL) /* open output device */
238 disp_open(outdev);
239 else if (ncprocs > 0) /* else use global ray feed */
240 init_global();
241 /* record disk space limit */
242 if (!vdef(DISKSPACE))
243 maxdisk = ((off_t)1<<(sizeof(off_t)*8-2)) - 1024;
244 else
245 maxdisk = 1024.*1024.*vflt(DISKSPACE);
246 /* set up memory cache */
247 if (outdev == NULL)
248 hdcachesize = 0; /* manual flushing */
249 else if (vdef(CACHE))
250 hdcachesize = 1024.*1024.*vflt(CACHE);
251 /* open report file */
252 if (vdef(REPORT)) {
253 register char *s = sskip2(vval(REPORT), 1);
254 if (*s && freopen(s, "a", stderr) == NULL)
255 quit(2);
256 }
257 /* mark the starting time */
258 starttime = time(NULL);
259 /* compute end time */
260 if (!vdef(TIME) || vflt(TIME) <= FTINY)
261 endtime = 0;
262 else
263 endtime = starttime + vflt(TIME)*3600. + .5;
264 /* start rtrace */
265 if (ncprocs > 0) {
266 totqlen = i = start_rtrace();
267 if (i < 1)
268 error(USER, "cannot start rtrace process(es)");
269 if (vdef(REPORT)) { /* make first report */
270 printargs(rtargc, rtargv, stderr);
271 report(0);
272 }
273 /* allocate packets */
274 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
275 if (freepacks == NULL)
276 goto memerr;
277 freepacks[--i].nr = 0;
278 freepacks[i].next = NULL;
279 if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
280 freepacks[i].offset = (float *)bmalloc(
281 RPACKSIZ*sizeof(float)*(i+1) );
282 if (freepacks[i].offset == NULL)
283 goto memerr;
284 } else
285 freepacks[i].offset = NULL;
286 while (i--) {
287 freepacks[i].nr = 0;
288 freepacks[i].offset = freepacks[i+1].offset == NULL ?
289 NULL : freepacks[i+1].offset+RPACKSIZ ;
290 freepacks[i].next = &freepacks[i+1];
291 }
292 }
293 /* set up signal handling */
294 sigdie(SIGINT, "Interrupt");
295 sigdie(SIGTERM, "Terminate");
296 #ifdef SIGHUP
297 sigdie(SIGHUP, "Hangup");
298 #endif
299 #ifdef SIGPIPE
300 sigdie(SIGPIPE, "Broken pipe");
301 #endif
302 #ifdef SIGALRM
303 sigdie(SIGALRM, "Alarm clock");
304 #endif
305 #ifdef SIGXCPU
306 sigdie(SIGXCPU, "CPU limit exceeded");
307 #endif
308 #ifdef SIGXFSZ
309 sigdie(SIGXFSZ, "File size exceeded");
310 #endif
311 /* protect holodeck file */
312 orig_mode = resfmode(hdlist[0]->fd, (ncprocs>0) & (force>=0) ? 0 : 0444);
313 return;
314 memerr:
315 error(SYSTEM, "out of memory in initrholo");
316 }
317
318
319 static int
320 rholo(void) /* holodeck main loop */
321 {
322 static off_t nextfragwarn = 100L<<20;
323 static int idle = 0;
324 PACKET *pl = NULL, *plend;
325 off_t fsiz;
326 int pksiz;
327 register PACKET *p;
328 time_t t;
329 /* check display */
330 if (nprocs <= 0)
331 idle = 1;
332 if (outdev != NULL) {
333 if (!disp_check(idle))
334 return(0); /* quit request */
335 if (nprocs <= 0)
336 return(1);
337 } else if (idle)
338 return(0); /* all done */
339 fsiz = hdfilen(hdlist[0]->fd); /* check file size */
340 if (maxdisk > 0 && fsiz >= maxdisk) {
341 error(USER, "file limit exceeded");
342 done_rtrace();
343 return(1); /* comes back */
344 }
345 #if FRAGWARN
346 if (fsiz >= nextfragwarn) {
347 double pctfrag = 100.*(fsiz-hdfiluse(hdlist[0]->fd))/fsiz;
348 if (pctfrag >= (double)FRAGWARN) {
349 sprintf(errmsg, "holodeck file fragmentation is %.0f%%",
350 pctfrag);
351 error(WARNING, errmsg);
352 nextfragwarn = fsiz + (fsiz>>2);
353 } else
354 nextfragwarn = fsiz + (10L<<20);
355 }
356 #endif
357 t = time(NULL); /* check time */
358 if (endtime > 0 && t >= endtime) {
359 error(USER, "time limit exceeded");
360 done_rtrace();
361 return(1); /* comes back */
362 }
363 if (reporttime > 0 && t >= reporttime)
364 report(t);
365 /* figure out good packet size */
366 pksiz = RPACKSIZ;
367 #if MAXQTIME
368 if (!chunkycmp) {
369 pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L));
370 if (pksiz < 1) pksiz = 1;
371 else if (pksiz > RPACKSIZ) pksiz = RPACKSIZ;
372 }
373 #endif
374 idle = 0; /* get packets to process */
375 while (freepacks != NULL) {
376 p = freepacks; freepacks = p->next; p->next = NULL;
377 if (!next_packet(p, pksiz)) {
378 p->next = freepacks; freepacks = p;
379 idle = 1;
380 break;
381 }
382 if (pl == NULL) pl = p;
383 else plend->next = p;
384 plend = p;
385 }
386 /* process packets */
387 done_packets(do_packets(pl));
388 return(1); /* and continue */
389 }
390
391
392 static void
393 setdefaults( /* set default values */
394 register HDGRID *gp
395 )
396 {
397 extern char *atos();
398 register int i;
399 int n;
400 double len[3], d;
401
402 if (!vdef(SECTION)) {
403 sprintf(errmsg, "%s must be defined", vnam(SECTION));
404 error(USER, errmsg);
405 }
406 if (!vdef(OCTREE)) {
407 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
408 error(SYSTEM, "out of memory");
409 sprintf(vval(OCTREE), "%s.oct", froot);
410 vdef(OCTREE)++;
411 }
412 if (!vdef(VDIST)) {
413 vval(VDIST) = "F";
414 vdef(VDIST)++;
415 }
416 /* append rendering options */
417 if (vdef(RENDER))
418 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
419
420 if (gp == NULL) /* already initialized? */
421 return;
422 /* set grid parameters */
423 for (n = 0; n < vdef(SECTION); n++, gp++) {
424 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
425 if (sscanf(nvalue(SECTION, n),
426 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
427 &gp->orig[0], &gp->orig[1], &gp->orig[2],
428 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
429 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
430 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
431 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
432 badvalue(SECTION);
433 for (i = 0; i < 3; i++)
434 len[i] = VLEN(gp->xv[i]);
435 if (!vdef(GRID)) {
436 d = 2/2e5*( len[0]*len[0]*(len[1]*len[1] +
437 len[2]*len[2] + 4*len[1]*len[2])
438 + len[1]*len[1]*len[2]*(len[2] + 4*len[0])
439 + 4*len[0]*len[1]*len[2]*len[2] );
440 d = sqrt(sqrt(d));
441 } else if ((d = vflt(GRID)) <= FTINY)
442 badvalue(GRID);
443 for (i = 0; i < 3; i++)
444 if (gp->grid[i] <= 0)
445 gp->grid[i] = len[i]/d + (1.-FTINY);
446 }
447 }
448
449
450 static void
451 creatholo( /* create a holodeck output file */
452 HDGRID *gp
453 )
454 {
455 extern char VersionID[];
456 int32 lastloc, nextloc;
457 int n;
458 int fd;
459 FILE *fp;
460 /* open & truncate file */
461 if ((fp = fopen(hdkfile, "w+")) == NULL) {
462 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
463 error(SYSTEM, errmsg);
464 }
465 /* write information header */
466 newheader("RADIANCE", fp);
467 fprintf(fp, "SOFTWARE= %s\n", VersionID);
468 printvars(fp);
469 fputformat(HOLOFMT, fp);
470 fputc('\n', fp);
471 putw(HOLOMAGIC, fp); /* put magic number */
472 fd = dup(fileno(fp));
473 fclose(fp); /* flush and close stdio stream */
474 lastloc = lseek(fd, (off_t)0, SEEK_END);
475 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
476 nextloc = 0L;
477 write(fd, (char *)&nextloc, sizeof(nextloc));
478 hdinit(fd, gp); /* writes beam index */
479 if (!n)
480 break;
481 nextloc = hdfilen(fd); /* write section pointer */
482 if (lseek(fd, (off_t)lastloc, SEEK_SET) < 0)
483 error(SYSTEM,
484 "cannot seek on holodeck file in creatholo");
485 write(fd, (char *)&nextloc, sizeof(nextloc));
486 lseek(fd, (off_t)(lastloc=nextloc), SEEK_SET);
487 }
488 }
489
490
491 static int
492 headline( /* process information header line */
493 char *s,
494 void *p
495 )
496 {
497 extern char FMTSTR[];
498 register char *cp;
499 char fmt[32];
500
501 if (formatval(fmt, s)) {
502 if (strcmp(fmt, HOLOFMT)) {
503 sprintf(errmsg, "%s file \"%s\" has %s%s",
504 HOLOFMT, hdkfile, FMTSTR, fmt);
505 error(USER, errmsg);
506 }
507 return(0);
508 }
509 for (cp = s; *cp; cp++) /* take off any comments */
510 if (*cp == '#') {
511 *cp = '\0';
512 break;
513 }
514 setvariable(s, matchvar); /* don't flag errors */
515 return(0);
516 }
517
518
519 static void
520 loadholo(void) /* start loading a holodeck from fname */
521 {
522 FILE *fp;
523 int fd;
524 int n;
525 int32 nextloc;
526
527 if ((ncprocs > 0) & (force >= 0))
528 fp = fopen(hdkfile, "r+");
529 else
530 fp = NULL;
531 if (fp == NULL) {
532 if ((fp = fopen(hdkfile, "r")) == NULL) {
533 sprintf(errmsg, "cannot open \"%s\"", hdkfile);
534 error(SYSTEM, errmsg);
535 }
536 if (ncprocs > 0) {
537 sprintf(errmsg, "\"%s\" is read-only", hdkfile);
538 if (outdev == NULL)
539 error(USER, errmsg);
540 strcat(errmsg, "; new rays will be discarded");
541 error(WARNING, errmsg);
542 force = -1;
543 }
544 }
545 /* load variables from header */
546 getheader(fp, headline, NULL);
547 /* check magic number */
548 if (getw(fp) != HOLOMAGIC) {
549 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
550 hdkfile);
551 error(USER, errmsg);
552 }
553 nextloc = ftell(fp); /* get stdio position */
554 fd = dup(fileno(fp));
555 fclose(fp); /* done with stdio */
556 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
557 lseek(fd, (off_t)nextloc, SEEK_SET);
558 read(fd, (char *)&nextloc, sizeof(nextloc));
559 hdinit(fd, NULL);
560 }
561 if (n != vdef(SECTION)) {
562 sprintf(errmsg, "number of sections does not match %s setting",
563 vnam(SECTION));
564 error(WARNING, errmsg);
565 }
566 }
567
568
569 extern void
570 done_packets( /* handle finished packets */
571 PACKET *pl
572 )
573 {
574 static int n2flush = 0;
575 register PACKET *p;
576
577 while (pl != NULL) {
578 p = pl; pl = p->next; p->next = NULL;
579 if (p->nr > 0) { /* add to holodeck */
580 memcpy( (void *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
581 (void *)p->ra,
582 p->nr*sizeof(RAYVAL));
583 if (outdev != NULL) /* display it */
584 disp_packet((PACKHEAD *)p);
585 if (hdcachesize <= 0)
586 n2flush++;
587 nraysdone += p->nr;
588 npacksdone++;
589 p->nr = 0;
590 }
591 p->next = freepacks; /* push onto free list */
592 freepacks = p;
593 }
594 if (n2flush >= RTFLUSH) {
595 if (outdev != NULL)
596 hdsync(NULL, 1);
597 else
598 hdflush(NULL);
599 n2flush = 0;
600 }
601 }
602
603
604 static void
605 rootname( /* remove tail from end of fn */
606 register char *rn,
607 register char *fn
608 )
609 {
610 char *tp, *dp;
611
612 for (tp = NULL, dp = rn; (*rn = *fn++); rn++) {
613 if (*rn == '/')
614 dp = rn;
615 else if (*rn == '.')
616 tp = rn;
617 }
618 if (tp != NULL && tp > dp)
619 *tp = '\0';
620 }
621
622
623 static void
624 badvalue( /* report bad variable value and exit */
625 int vc
626 )
627 {
628 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
629 error(USER, errmsg);
630 }
631
632
633 void
634 eputs(s) /* put error message to stderr */
635 register char *s;
636 {
637 static int midline = 0;
638
639 if (!*s)
640 return;
641 if (!midline++) { /* prepend line with program name */
642 fputs(progname, stderr);
643 fputs(": ", stderr);
644 }
645 fputs(s, stderr);
646 if (s[strlen(s)-1] == '\n') {
647 fflush(stderr);
648 midline = 0;
649 }
650 }
651
652
653 void
654 quit(ec) /* exit program gracefully */
655 int ec;
656 {
657 int status = 0;
658
659 if (hdlist[0] != NULL) { /* close holodeck */
660 if (nprocs > 0)
661 status = done_rtrace(); /* calls hdsync() */
662 if ((ncprocs > 0) & (force >= 0) && vdef(REPORT)) {
663 off_t fsiz, fuse;
664 fsiz = hdfilen(hdlist[0]->fd);
665 fuse = hdfiluse(hdlist[0]->fd);
666 fprintf(stderr,
667 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
668 hdkfile, fsiz/(1024.*1024.),
669 100.*(fsiz-fuse)/fsiz);
670 }
671 }
672 if (orig_mode >= 0) /* reset holodeck access mode */
673 fchmod(hdlist[0]->fd, orig_mode);
674 if (outdev != NULL) /* close display */
675 disp_close();
676 exit(ec ? ec : status); /* exit */
677 }