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root/radiance/ray/src/hd/rholo.c
Revision: 3.61
Committed: Mon Oct 20 16:01:55 2003 UTC (20 years, 5 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 3.60: +6 -5 lines
Log Message:
Included "platform.h" wherever lseek() was called

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rholo.c,v 3.60 2003/07/27 22:12:02 schorsch 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(SIGHUP, "Hangup");
274 sigdie(SIGTERM, "Terminate");
275 sigdie(SIGPIPE, "Broken pipe");
276 sigdie(SIGALRM, "Alarm clock");
277 #ifdef SIGXCPU
278 sigdie(SIGXCPU, "CPU limit exceeded");
279 sigdie(SIGXFSZ, "File size exceeded");
280 #endif
281 /* protect holodeck file */
282 orig_mode = resfmode(hdlist[0]->fd, (ncprocs>0) & (force>=0) ? 0 : 0444);
283 return;
284 memerr:
285 error(SYSTEM, "out of memory in initrholo");
286 }
287
288
289 rholo() /* holodeck main loop */
290 {
291 static long nextfragwarn = 100*(1L<<20);
292 static int idle = 0;
293 PACKET *pl = NULL, *plend;
294 off_t fsiz;
295 int pksiz;
296 register PACKET *p;
297 time_t t;
298 /* check display */
299 if (nprocs <= 0)
300 idle = 1;
301 if (outdev != NULL) {
302 if (!disp_check(idle))
303 return(0); /* quit request */
304 if (nprocs <= 0)
305 return(1);
306 } else if (idle)
307 return(0); /* all done */
308 fsiz = hdfilen(hdlist[0]->fd); /* check file size */
309 if (maxdisk > 0 && fsiz >= maxdisk) {
310 error(WARNING, "file limit exceeded");
311 done_rtrace();
312 return(1); /* comes back */
313 }
314 #if FRAGWARN
315 if (fsiz >= nextfragwarn &&
316 (fsiz-hdfiluse(hdlist[0]->fd,0))/(fsiz/100) > FRAGWARN) {
317 sprintf(errmsg, "holodeck file fragmentation is %.0f%%",
318 100.*(fsiz-hdfiluse(hdlist[0]->fd,1))/fsiz);
319 error(WARNING, errmsg);
320 nextfragwarn = fsiz + (fsiz>>2); /* decent interval */
321 }
322 #endif
323 t = time(NULL); /* check time */
324 if (endtime > 0 && t >= endtime) {
325 error(WARNING, "time limit exceeded");
326 done_rtrace();
327 return(1); /* comes back */
328 }
329 if (reporttime > 0 && t >= reporttime)
330 report(t);
331 /* figure out good packet size */
332 pksiz = RPACKSIZ;
333 #if MAXQTIME
334 if (!chunkycmp) {
335 pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L));
336 if (pksiz < 1) pksiz = 1;
337 else if (pksiz > RPACKSIZ) pksiz = RPACKSIZ;
338 }
339 #endif
340 idle = 0; /* get packets to process */
341 while (freepacks != NULL) {
342 p = freepacks; freepacks = p->next; p->next = NULL;
343 if (!next_packet(p, pksiz)) {
344 p->next = freepacks; freepacks = p;
345 idle = 1;
346 break;
347 }
348 if (pl == NULL) pl = p;
349 else plend->next = p;
350 plend = p;
351 }
352 /* process packets */
353 done_packets(do_packets(pl));
354 return(1); /* and continue */
355 }
356
357
358 setdefaults(gp) /* set default values */
359 register HDGRID *gp;
360 {
361 extern char *atos();
362 register int i;
363 int n;
364 double len[3], d;
365 char buf[64];
366
367 if (!vdef(SECTION)) {
368 sprintf(errmsg, "%s must be defined", vnam(SECTION));
369 error(USER, errmsg);
370 }
371 if (!vdef(OCTREE)) {
372 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
373 error(SYSTEM, "out of memory");
374 sprintf(vval(OCTREE), "%s.oct", froot);
375 vdef(OCTREE)++;
376 }
377 if (!vdef(VDIST)) {
378 vval(VDIST) = "F";
379 vdef(VDIST)++;
380 }
381 /* append rendering options */
382 if (vdef(RENDER))
383 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
384
385 if (gp == NULL) /* already initialized? */
386 return;
387 /* set grid parameters */
388 for (n = 0; n < vdef(SECTION); n++, gp++) {
389 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
390 if (sscanf(nvalue(SECTION, n),
391 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
392 &gp->orig[0], &gp->orig[1], &gp->orig[2],
393 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
394 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
395 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
396 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
397 badvalue(SECTION);
398 for (i = 0; i < 3; i++)
399 len[i] = VLEN(gp->xv[i]);
400 if (!vdef(GRID)) {
401 d = 2/2e5*( len[0]*len[0]*(len[1]*len[1] +
402 len[2]*len[2] + 4*len[1]*len[2])
403 + len[1]*len[1]*len[2]*(len[2] + 4*len[0])
404 + 4*len[0]*len[1]*len[2]*len[2] );
405 d = sqrt(sqrt(d));
406 } else if ((d = vflt(GRID)) <= FTINY)
407 badvalue(GRID);
408 for (i = 0; i < 3; i++)
409 if (gp->grid[i] <= 0)
410 gp->grid[i] = len[i]/d + (1.-FTINY);
411 }
412 }
413
414
415 creatholo(gp) /* create a holodeck output file */
416 HDGRID *gp;
417 {
418 extern char VersionID[];
419 int32 lastloc, nextloc;
420 int n;
421 int fd;
422 FILE *fp;
423 /* open & truncate file */
424 if ((fp = fopen(hdkfile, "w+")) == NULL) {
425 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
426 error(SYSTEM, errmsg);
427 }
428 /* write information header */
429 newheader("RADIANCE", fp);
430 fprintf(fp, "SOFTWARE= %s\n", VersionID);
431 printvars(fp);
432 fputformat(HOLOFMT, fp);
433 fputc('\n', fp);
434 putw(HOLOMAGIC, fp); /* put magic number */
435 fd = dup(fileno(fp));
436 fclose(fp); /* flush and close stdio stream */
437 lastloc = lseek(fd, (off_t)0, SEEK_END);
438 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
439 nextloc = 0L;
440 write(fd, (char *)&nextloc, sizeof(nextloc));
441 hdinit(fd, gp); /* writes beam index */
442 if (!n)
443 break;
444 nextloc = hdfilen(fd); /* write section pointer */
445 if (lseek(fd, (off_t)lastloc, SEEK_SET) < 0)
446 error(SYSTEM,
447 "cannot seek on holodeck file in creatholo");
448 write(fd, (char *)&nextloc, sizeof(nextloc));
449 lseek(fd, (off_t)(lastloc=nextloc), SEEK_SET);
450 }
451 }
452
453
454 int
455 headline(s) /* process information header line */
456 char *s;
457 {
458 extern char FMTSTR[];
459 register char *cp;
460 char fmt[32];
461
462 if (formatval(fmt, s)) {
463 if (strcmp(fmt, HOLOFMT)) {
464 sprintf(errmsg, "%s file \"%s\" has %s%s",
465 HOLOFMT, hdkfile, FMTSTR, fmt);
466 error(USER, errmsg);
467 }
468 return(0);
469 }
470 for (cp = s; *cp; cp++) /* take off any comments */
471 if (*cp == '#') {
472 *cp = '\0';
473 break;
474 }
475 setvariable(s, matchvar); /* don't flag errors */
476 return(0);
477 }
478
479
480 loadholo() /* start loading a holodeck from fname */
481 {
482 FILE *fp;
483 int fd;
484 int n;
485 int32 nextloc;
486
487 if ((ncprocs > 0) & (force >= 0))
488 fp = fopen(hdkfile, "r+");
489 else
490 fp = NULL;
491 if (fp == NULL) {
492 if ((fp = fopen(hdkfile, "r")) == NULL) {
493 sprintf(errmsg, "cannot open \"%s\"", hdkfile);
494 error(SYSTEM, errmsg);
495 }
496 if (ncprocs > 0) {
497 sprintf(errmsg,
498 "\"%s\" opened read-only; new rays will be discarded",
499 hdkfile);
500 error(WARNING, errmsg);
501 force = -1;
502 }
503 }
504 /* load variables from header */
505 getheader(fp, headline, NULL);
506 /* check magic number */
507 if (getw(fp) != HOLOMAGIC) {
508 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
509 hdkfile);
510 error(USER, errmsg);
511 }
512 nextloc = ftell(fp); /* get stdio position */
513 fd = dup(fileno(fp));
514 fclose(fp); /* done with stdio */
515 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
516 lseek(fd, (off_t)nextloc, SEEK_SET);
517 read(fd, (char *)&nextloc, sizeof(nextloc));
518 hdinit(fd, NULL);
519 }
520 if (n != vdef(SECTION)) {
521 sprintf(errmsg, "number of sections does not match %s setting",
522 vnam(SECTION));
523 error(WARNING, errmsg);
524 }
525 }
526
527
528 done_packets(pl) /* handle finished packets */
529 PACKET *pl;
530 {
531 static int n2flush = 0;
532 register PACKET *p;
533
534 while (pl != NULL) {
535 p = pl; pl = p->next; p->next = NULL;
536 if (p->nr > 0) { /* add to holodeck */
537 memcpy( (void *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
538 (void *)p->ra,
539 p->nr*sizeof(RAYVAL));
540 if (outdev != NULL) /* display it */
541 disp_packet((PACKHEAD *)p);
542 if (hdcachesize <= 0)
543 n2flush++;
544 nraysdone += p->nr;
545 npacksdone++;
546 p->nr = 0;
547 }
548 p->next = freepacks; /* push onto free list */
549 freepacks = p;
550 }
551 if (n2flush >= RTFLUSH) {
552 if (outdev != NULL)
553 hdsync(NULL, 1);
554 else
555 hdflush(NULL);
556 n2flush = 0;
557 }
558 }
559
560
561 rootname(rn, fn) /* remove tail from end of fn */
562 register char *rn, *fn;
563 {
564 char *tp, *dp;
565
566 for (tp = NULL, dp = rn; (*rn = *fn++); rn++) {
567 if (*rn == '/')
568 dp = rn;
569 else if (*rn == '.')
570 tp = rn;
571 }
572 if (tp != NULL && tp > dp)
573 *tp = '\0';
574 }
575
576
577 badvalue(vc) /* report bad variable value and exit */
578 int vc;
579 {
580 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
581 error(USER, errmsg);
582 }
583
584
585 void
586 eputs(s) /* put error message to stderr */
587 register char *s;
588 {
589 static int midline = 0;
590
591 if (!*s)
592 return;
593 if (!midline++) { /* prepend line with program name */
594 fputs(progname, stderr);
595 fputs(": ", stderr);
596 }
597 fputs(s, stderr);
598 if (s[strlen(s)-1] == '\n') {
599 fflush(stderr);
600 midline = 0;
601 }
602 }
603
604
605 void
606 quit(ec) /* exit program gracefully */
607 int ec;
608 {
609 int status = 0;
610
611 if (hdlist[0] != NULL) { /* close holodeck */
612 if (nprocs > 0)
613 status = done_rtrace(); /* calls hdsync() */
614 if ((ncprocs > 0) & (force >= 0) && vdef(REPORT)) {
615 off_t fsiz, fuse;
616 fsiz = hdfilen(hdlist[0]->fd);
617 fuse = hdfiluse(hdlist[0]->fd, 1);
618 fprintf(stderr,
619 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
620 hdkfile, fsiz/(1024.*1024.),
621 100.*(fsiz-fuse)/fsiz);
622 }
623 }
624 if (orig_mode >= 0) /* reset holodeck access mode */
625 fchmod(hdlist[0]->fd, orig_mode);
626 if (outdev != NULL) /* close display */
627 disp_close();
628 exit(ec ? ec : status); /* exit */
629 }