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root/radiance/ray/src/hd/rholo.c
Revision: 3.62
Committed: Tue Oct 21 19:19:28 2003 UTC (20 years, 5 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 3.61: +10 -2 lines
Log Message:
Various platform compatibility fixes.

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rholo.c,v 3.61 2003/10/20 16:01:55 greg Exp $";
3 #endif
4 /*
5 * Radiance holodeck generation controller
6 */
7
8 #include <signal.h>
9 #include <sys/stat.h>
10 #include <string.h>
11
12 #include "rholo.h"
13 #include "platform.h"
14 #include "random.h"
15
16 #ifndef FRAGWARN
17 #define FRAGWARN 20 /* fragmentation for warning (%) */
18 #endif
19 #ifndef MAXQTIME
20 #define MAXQTIME 5 /* target maximum seconds in queue */
21 #endif
22 /* manual cache flushing frequency */
23 #ifndef RTFLUSH
24 #if MAXQTIME
25 #define RTFLUSH (300/MAXQTIME*totqlen) /* <= 5 minutes */
26 #else
27 #define RTFLUSH (50*totqlen) /* just guess */
28 #endif
29 #endif
30 /* the following must be consistent with rholo.h */
31 int NVARS = NRHVARS; /* total number of variables */
32
33 VARIABLE vv[] = RHVINIT; /* variable-value pairs */
34
35 char *progname; /* our program name */
36 char *hdkfile; /* holodeck file name */
37 char froot[256]; /* root file name */
38
39 int ncprocs = 0; /* desired number of compute processes */
40
41 char *outdev = NULL; /* output device name */
42
43 int readinp = 0; /* read commands from stdin */
44
45 int force = 0; /* allow overwrite of holodeck (-1 == read-only) */
46
47 time_t starttime; /* time we got started */
48 time_t endtime; /* time we should end by */
49 time_t reporttime; /* time for next report */
50
51 off_t maxdisk; /* maximum file space (bytes) */
52
53 int rtargc = 1; /* rtrace command */
54 char *rtargv[128] = {"rtrace", NULL};
55
56 int orig_mode = -1; /* original file mode (-1 if unchanged) */
57
58 long nraysdone = 0L; /* number of rays done */
59 long npacksdone = 0L; /* number of packets done */
60
61 PACKET *freepacks; /* available packets */
62 int totqlen; /* maximum queue length (number of packets) */
63
64 char *sigerr[NSIG]; /* signal error messages */
65
66 extern int nowarn; /* turn warnings off? */
67
68 extern time_t time();
69
70
71 main(argc, argv)
72 int argc;
73 char *argv[];
74 {
75 int i;
76
77 initurand(16384); /* initialize urand */
78 progname = argv[0]; /* get arguments */
79 for (i = 1; i < argc && argv[i][0] == '-'; i++)
80 switch (argv[i][1]) {
81 case 'w': /* turn off warnings */
82 nowarn++;
83 break;
84 case 'f': /* force overwrite */
85 force = 1;
86 break;
87 case 'r': /* read-only mode */
88 force = -1;
89 break;
90 case 'i': /* read input from stdin */
91 readinp++;
92 break;
93 case 'n': /* compute processes */
94 if (i >= argc-2)
95 goto userr;
96 ncprocs = atoi(argv[++i]);
97 break;
98 case 'o': /* output display */
99 if (i >= argc-2)
100 goto userr;
101 outdev = argv[++i];
102 break;
103 default:
104 goto userr;
105 }
106 /* get root file name */
107 if (i >= argc)
108 goto userr;
109 rootname(froot, hdkfile=argv[i++]);
110 /* load variables? */
111 if (i < argc)
112 if (argv[i][0] != '-' && argv[i][0] != '+')
113 loadvars(argv[i]); /* load variables from file */
114
115 if (i >= argc || argv[i][0] == '+')
116 loadholo(); /* load existing holodeck */
117
118 while (++i < argc) /* get command line settings */
119 if (setvariable(argv[i], matchvar) < 0) {
120 sprintf(errmsg, "unknown variable: %s", argv[i]);
121 error(USER, errmsg);
122 }
123 /* check settings */
124 checkvalues();
125 /* load rad input file */
126 getradfile();
127
128 if (hdlist[0] == NULL) { /* create new holodeck */
129 HDGRID hdg[HDMAX];
130 /* set defaults */
131 setdefaults(hdg);
132 /* check read-only */
133 if (force < 0)
134 error(USER, "cannot create read-only holodeck");
135 /* holodeck exists? */
136 if (!force && access(hdkfile, R_OK|W_OK) == 0)
137 error(USER,
138 "holodeck file exists -- use -f to overwrite");
139 /* create holodeck */
140 creatholo(hdg);
141 } else /* else just set defaults */
142 setdefaults(NULL);
143 /* initialize */
144 initrholo();
145 /* main loop */
146 while (rholo())
147 ;
148 /* done */
149 quit(0);
150 userr:
151 fprintf(stderr,
152 "Usage: %s [-n nprocs][-o disp][-w][-r|-f] output.hdk [control.hif|+|- [VAR=val ..]]\n",
153 progname);
154 quit(1);
155 }
156
157
158 void
159 onsig(signo) /* fatal signal */
160 int signo;
161 {
162 static int gotsig = 0;
163
164 if (gotsig > 1) /* we're going as fast as we can! */
165 return;
166 if (gotsig++) { /* two signals and we split */
167 hdsync(NULL, 0); /* don't leave w/o saying goodbye */
168 _exit(signo);
169 }
170 alarm(300); /* allow 5 minutes to clean up */
171 eputs("signal - ");
172 eputs(sigerr[signo]);
173 eputs("\n");
174 quit(3);
175 }
176
177
178 sigdie(signo, msg) /* set fatal signal */
179 int signo;
180 char *msg;
181 {
182 if (signal(signo, onsig) == SIG_IGN)
183 signal(signo, SIG_IGN);
184 sigerr[signo] = msg;
185 }
186
187
188 int
189 resfmode(fd, mod) /* restrict open file access mode */
190 int fd, mod;
191 {
192 struct stat stbuf;
193 /* get original mode */
194 if (fstat(fd, &stbuf) < 0)
195 error(SYSTEM, "cannot stat open holodeck file");
196 mod &= stbuf.st_mode; /* always more restrictive */
197 if (mod == (stbuf.st_mode & 0777))
198 return(-1); /* already set */
199 /* else change it */
200 if (fchmod(fd, mod) < 0) {
201 error(WARNING, "cannot change holodeck file access mode");
202 return(-1);
203 }
204 return(stbuf.st_mode); /* return original mode */
205 }
206
207
208 initrholo() /* get our holodeck running */
209 {
210 extern int global_packet();
211 register int i;
212 /* close holodeck on exec() */
213 fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC);
214
215 if (outdev != NULL) /* open output device */
216 disp_open(outdev);
217 else if (ncprocs > 0) /* else use global ray feed */
218 init_global();
219 /* record disk space limit */
220 if (!vdef(DISKSPACE))
221 maxdisk = ((off_t)1<<(sizeof(off_t)*8-2)) - 1024;
222 else
223 maxdisk = 1024.*1024.*vflt(DISKSPACE);
224 /* set up memory cache */
225 if (outdev == NULL)
226 hdcachesize = 0; /* manual flushing */
227 else if (vdef(CACHE))
228 hdcachesize = 1024.*1024.*vflt(CACHE);
229 /* open report file */
230 if (vdef(REPORT)) {
231 register char *s = sskip2(vval(REPORT), 1);
232 if (*s && freopen(s, "a", stderr) == NULL)
233 quit(2);
234 }
235 /* mark the starting time */
236 starttime = time(NULL);
237 /* compute end time */
238 if (!vdef(TIME) || vflt(TIME) <= FTINY)
239 endtime = 0;
240 else
241 endtime = starttime + vflt(TIME)*3600. + .5;
242 /* start rtrace */
243 if (ncprocs > 0) {
244 totqlen = i = start_rtrace();
245 if (i < 1)
246 error(USER, "cannot start rtrace process(es)");
247 if (vdef(REPORT)) { /* make first report */
248 printargs(rtargc, rtargv, stderr);
249 report(0);
250 }
251 /* allocate packets */
252 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
253 if (freepacks == NULL)
254 goto memerr;
255 freepacks[--i].nr = 0;
256 freepacks[i].next = NULL;
257 if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
258 freepacks[i].offset = (float *)bmalloc(
259 RPACKSIZ*sizeof(float)*(i+1) );
260 if (freepacks[i].offset == NULL)
261 goto memerr;
262 } else
263 freepacks[i].offset = NULL;
264 while (i--) {
265 freepacks[i].nr = 0;
266 freepacks[i].offset = freepacks[i+1].offset == NULL ?
267 NULL : freepacks[i+1].offset+RPACKSIZ ;
268 freepacks[i].next = &freepacks[i+1];
269 }
270 }
271 /* set up signal handling */
272 sigdie(SIGINT, "Interrupt");
273 sigdie(SIGTERM, "Terminate");
274 #ifdef SIGHUP
275 sigdie(SIGHUP, "Hangup");
276 #endif
277 #ifdef SIGPIPE
278 sigdie(SIGPIPE, "Broken pipe");
279 #endif
280 #ifdef SIGALRM
281 sigdie(SIGALRM, "Alarm clock");
282 #endif
283 #ifdef SIGXCPU
284 sigdie(SIGXCPU, "CPU limit exceeded");
285 #endif
286 #ifdef SIGXFSZ
287 sigdie(SIGXFSZ, "File size exceeded");
288 #endif
289 /* protect holodeck file */
290 orig_mode = resfmode(hdlist[0]->fd, (ncprocs>0) & (force>=0) ? 0 : 0444);
291 return;
292 memerr:
293 error(SYSTEM, "out of memory in initrholo");
294 }
295
296
297 rholo() /* holodeck main loop */
298 {
299 static long nextfragwarn = 100*(1L<<20);
300 static int idle = 0;
301 PACKET *pl = NULL, *plend;
302 off_t fsiz;
303 int pksiz;
304 register PACKET *p;
305 time_t t;
306 /* check display */
307 if (nprocs <= 0)
308 idle = 1;
309 if (outdev != NULL) {
310 if (!disp_check(idle))
311 return(0); /* quit request */
312 if (nprocs <= 0)
313 return(1);
314 } else if (idle)
315 return(0); /* all done */
316 fsiz = hdfilen(hdlist[0]->fd); /* check file size */
317 if (maxdisk > 0 && fsiz >= maxdisk) {
318 error(WARNING, "file limit exceeded");
319 done_rtrace();
320 return(1); /* comes back */
321 }
322 #if FRAGWARN
323 if (fsiz >= nextfragwarn &&
324 (fsiz-hdfiluse(hdlist[0]->fd,0))/(fsiz/100) > FRAGWARN) {
325 sprintf(errmsg, "holodeck file fragmentation is %.0f%%",
326 100.*(fsiz-hdfiluse(hdlist[0]->fd,1))/fsiz);
327 error(WARNING, errmsg);
328 nextfragwarn = fsiz + (fsiz>>2); /* decent interval */
329 }
330 #endif
331 t = time(NULL); /* check time */
332 if (endtime > 0 && t >= endtime) {
333 error(WARNING, "time limit exceeded");
334 done_rtrace();
335 return(1); /* comes back */
336 }
337 if (reporttime > 0 && t >= reporttime)
338 report(t);
339 /* figure out good packet size */
340 pksiz = RPACKSIZ;
341 #if MAXQTIME
342 if (!chunkycmp) {
343 pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L));
344 if (pksiz < 1) pksiz = 1;
345 else if (pksiz > RPACKSIZ) pksiz = RPACKSIZ;
346 }
347 #endif
348 idle = 0; /* get packets to process */
349 while (freepacks != NULL) {
350 p = freepacks; freepacks = p->next; p->next = NULL;
351 if (!next_packet(p, pksiz)) {
352 p->next = freepacks; freepacks = p;
353 idle = 1;
354 break;
355 }
356 if (pl == NULL) pl = p;
357 else plend->next = p;
358 plend = p;
359 }
360 /* process packets */
361 done_packets(do_packets(pl));
362 return(1); /* and continue */
363 }
364
365
366 setdefaults(gp) /* set default values */
367 register HDGRID *gp;
368 {
369 extern char *atos();
370 register int i;
371 int n;
372 double len[3], d;
373 char buf[64];
374
375 if (!vdef(SECTION)) {
376 sprintf(errmsg, "%s must be defined", vnam(SECTION));
377 error(USER, errmsg);
378 }
379 if (!vdef(OCTREE)) {
380 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
381 error(SYSTEM, "out of memory");
382 sprintf(vval(OCTREE), "%s.oct", froot);
383 vdef(OCTREE)++;
384 }
385 if (!vdef(VDIST)) {
386 vval(VDIST) = "F";
387 vdef(VDIST)++;
388 }
389 /* append rendering options */
390 if (vdef(RENDER))
391 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
392
393 if (gp == NULL) /* already initialized? */
394 return;
395 /* set grid parameters */
396 for (n = 0; n < vdef(SECTION); n++, gp++) {
397 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
398 if (sscanf(nvalue(SECTION, n),
399 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
400 &gp->orig[0], &gp->orig[1], &gp->orig[2],
401 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
402 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
403 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
404 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
405 badvalue(SECTION);
406 for (i = 0; i < 3; i++)
407 len[i] = VLEN(gp->xv[i]);
408 if (!vdef(GRID)) {
409 d = 2/2e5*( len[0]*len[0]*(len[1]*len[1] +
410 len[2]*len[2] + 4*len[1]*len[2])
411 + len[1]*len[1]*len[2]*(len[2] + 4*len[0])
412 + 4*len[0]*len[1]*len[2]*len[2] );
413 d = sqrt(sqrt(d));
414 } else if ((d = vflt(GRID)) <= FTINY)
415 badvalue(GRID);
416 for (i = 0; i < 3; i++)
417 if (gp->grid[i] <= 0)
418 gp->grid[i] = len[i]/d + (1.-FTINY);
419 }
420 }
421
422
423 creatholo(gp) /* create a holodeck output file */
424 HDGRID *gp;
425 {
426 extern char VersionID[];
427 int32 lastloc, nextloc;
428 int n;
429 int fd;
430 FILE *fp;
431 /* open & truncate file */
432 if ((fp = fopen(hdkfile, "w+")) == NULL) {
433 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
434 error(SYSTEM, errmsg);
435 }
436 /* write information header */
437 newheader("RADIANCE", fp);
438 fprintf(fp, "SOFTWARE= %s\n", VersionID);
439 printvars(fp);
440 fputformat(HOLOFMT, fp);
441 fputc('\n', fp);
442 putw(HOLOMAGIC, fp); /* put magic number */
443 fd = dup(fileno(fp));
444 fclose(fp); /* flush and close stdio stream */
445 lastloc = lseek(fd, (off_t)0, SEEK_END);
446 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
447 nextloc = 0L;
448 write(fd, (char *)&nextloc, sizeof(nextloc));
449 hdinit(fd, gp); /* writes beam index */
450 if (!n)
451 break;
452 nextloc = hdfilen(fd); /* write section pointer */
453 if (lseek(fd, (off_t)lastloc, SEEK_SET) < 0)
454 error(SYSTEM,
455 "cannot seek on holodeck file in creatholo");
456 write(fd, (char *)&nextloc, sizeof(nextloc));
457 lseek(fd, (off_t)(lastloc=nextloc), SEEK_SET);
458 }
459 }
460
461
462 int
463 headline(s) /* process information header line */
464 char *s;
465 {
466 extern char FMTSTR[];
467 register char *cp;
468 char fmt[32];
469
470 if (formatval(fmt, s)) {
471 if (strcmp(fmt, HOLOFMT)) {
472 sprintf(errmsg, "%s file \"%s\" has %s%s",
473 HOLOFMT, hdkfile, FMTSTR, fmt);
474 error(USER, errmsg);
475 }
476 return(0);
477 }
478 for (cp = s; *cp; cp++) /* take off any comments */
479 if (*cp == '#') {
480 *cp = '\0';
481 break;
482 }
483 setvariable(s, matchvar); /* don't flag errors */
484 return(0);
485 }
486
487
488 loadholo() /* start loading a holodeck from fname */
489 {
490 FILE *fp;
491 int fd;
492 int n;
493 int32 nextloc;
494
495 if ((ncprocs > 0) & (force >= 0))
496 fp = fopen(hdkfile, "r+");
497 else
498 fp = NULL;
499 if (fp == NULL) {
500 if ((fp = fopen(hdkfile, "r")) == NULL) {
501 sprintf(errmsg, "cannot open \"%s\"", hdkfile);
502 error(SYSTEM, errmsg);
503 }
504 if (ncprocs > 0) {
505 sprintf(errmsg,
506 "\"%s\" opened read-only; new rays will be discarded",
507 hdkfile);
508 error(WARNING, errmsg);
509 force = -1;
510 }
511 }
512 /* load variables from header */
513 getheader(fp, headline, NULL);
514 /* check magic number */
515 if (getw(fp) != HOLOMAGIC) {
516 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
517 hdkfile);
518 error(USER, errmsg);
519 }
520 nextloc = ftell(fp); /* get stdio position */
521 fd = dup(fileno(fp));
522 fclose(fp); /* done with stdio */
523 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
524 lseek(fd, (off_t)nextloc, SEEK_SET);
525 read(fd, (char *)&nextloc, sizeof(nextloc));
526 hdinit(fd, NULL);
527 }
528 if (n != vdef(SECTION)) {
529 sprintf(errmsg, "number of sections does not match %s setting",
530 vnam(SECTION));
531 error(WARNING, errmsg);
532 }
533 }
534
535
536 done_packets(pl) /* handle finished packets */
537 PACKET *pl;
538 {
539 static int n2flush = 0;
540 register PACKET *p;
541
542 while (pl != NULL) {
543 p = pl; pl = p->next; p->next = NULL;
544 if (p->nr > 0) { /* add to holodeck */
545 memcpy( (void *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
546 (void *)p->ra,
547 p->nr*sizeof(RAYVAL));
548 if (outdev != NULL) /* display it */
549 disp_packet((PACKHEAD *)p);
550 if (hdcachesize <= 0)
551 n2flush++;
552 nraysdone += p->nr;
553 npacksdone++;
554 p->nr = 0;
555 }
556 p->next = freepacks; /* push onto free list */
557 freepacks = p;
558 }
559 if (n2flush >= RTFLUSH) {
560 if (outdev != NULL)
561 hdsync(NULL, 1);
562 else
563 hdflush(NULL);
564 n2flush = 0;
565 }
566 }
567
568
569 rootname(rn, fn) /* remove tail from end of fn */
570 register char *rn, *fn;
571 {
572 char *tp, *dp;
573
574 for (tp = NULL, dp = rn; (*rn = *fn++); rn++) {
575 if (*rn == '/')
576 dp = rn;
577 else if (*rn == '.')
578 tp = rn;
579 }
580 if (tp != NULL && tp > dp)
581 *tp = '\0';
582 }
583
584
585 badvalue(vc) /* report bad variable value and exit */
586 int vc;
587 {
588 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
589 error(USER, errmsg);
590 }
591
592
593 void
594 eputs(s) /* put error message to stderr */
595 register char *s;
596 {
597 static int midline = 0;
598
599 if (!*s)
600 return;
601 if (!midline++) { /* prepend line with program name */
602 fputs(progname, stderr);
603 fputs(": ", stderr);
604 }
605 fputs(s, stderr);
606 if (s[strlen(s)-1] == '\n') {
607 fflush(stderr);
608 midline = 0;
609 }
610 }
611
612
613 void
614 quit(ec) /* exit program gracefully */
615 int ec;
616 {
617 int status = 0;
618
619 if (hdlist[0] != NULL) { /* close holodeck */
620 if (nprocs > 0)
621 status = done_rtrace(); /* calls hdsync() */
622 if ((ncprocs > 0) & (force >= 0) && vdef(REPORT)) {
623 off_t fsiz, fuse;
624 fsiz = hdfilen(hdlist[0]->fd);
625 fuse = hdfiluse(hdlist[0]->fd, 1);
626 fprintf(stderr,
627 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
628 hdkfile, fsiz/(1024.*1024.),
629 100.*(fsiz-fuse)/fsiz);
630 }
631 }
632 if (orig_mode >= 0) /* reset holodeck access mode */
633 fchmod(hdlist[0]->fd, orig_mode);
634 if (outdev != NULL) /* close display */
635 disp_close();
636 exit(ec ? ec : status); /* exit */
637 }