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root/radiance/ray/src/hd/rholo.c
Revision: 3.13
Committed: Wed Nov 26 20:13:55 1997 UTC (26 years, 4 months ago) by gregl
Content type: text/plain
Branch: MAIN
Changes since 3.12: +5 -5 lines
Log Message:
changed flushing code to account for multiple processes

File Contents

# Content
1 /* Copyright (c) 1997 Silicon Graphics, Inc. */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ SGI";
5 #endif
6
7 /*
8 * Radiance holodeck generation controller
9 */
10
11 #include "rholo.h"
12 #include "paths.h"
13 #include <signal.h>
14 #include <sys/types.h>
15 #include <sys/stat.h>
16
17 /* the following must be consistent with rholo.h */
18 int NVARS = NRHVARS; /* total number of variables */
19
20 VARIABLE vv[] = RHVINIT; /* variable-value pairs */
21
22 char *progname; /* our program name */
23 char *hdkfile; /* holodeck file name */
24 char froot[MAXPATH]; /* root file name */
25
26 int nowarn = 0; /* turn warnings off? */
27
28 double expval = 1.; /* global exposure value */
29
30 int ncprocs = 0; /* desired number of compute processes */
31
32 char *outdev = NULL; /* output device name */
33
34 time_t starttime; /* time we got started */
35 time_t endtime; /* time we should end by */
36 time_t reporttime; /* time for next report */
37
38 long maxdisk; /* maximum file space (bytes) */
39
40 int rtargc = 1; /* rtrace command */
41 char *rtargv[128] = {"rtrace", NULL};
42
43 int orig_mode = -1; /* original file mode (-1 if unchanged) */
44
45 long nraysdone = 0L; /* number of rays done */
46 long npacksdone = 0L; /* number of packets done */
47
48 PACKET *freepacks; /* available packets */
49
50 char *sigerr[NSIG]; /* signal error messages */
51
52 extern time_t time();
53
54
55 main(argc, argv)
56 int argc;
57 char *argv[];
58 {
59 HDGRID hdg;
60 int i;
61 int force = 0;
62 /* mark start time */
63 starttime = time(NULL);
64 progname = argv[0]; /* get arguments */
65 for (i = 1; i < argc && argv[i][0] == '-'; i++)
66 switch (argv[i][1]) {
67 case 'w': /* turn off warnings */
68 nowarn++;
69 break;
70 case 'f': /* force overwrite */
71 force++;
72 break;
73 case 'n': /* compute processes */
74 if (i >= argc-2)
75 goto userr;
76 ncprocs = atoi(argv[++i]);
77 break;
78 case 'o': /* output display */
79 if (i >= argc-2)
80 goto userr;
81 outdev = argv[++i];
82 break;
83 default:
84 goto userr;
85 }
86 /* do we have a job? */
87 if (outdev == NULL && ncprocs <= 0)
88 goto userr;
89 /* get root file name */
90 rootname(froot, hdkfile=argv[i++]);
91 /* load... */
92 if (i < argc) { /* variables */
93 loadvars(argv[i++]);
94 /* cmdline settings */
95 for ( ; i < argc; i++)
96 if (setvariable(argv[i], matchvar) < 0) {
97 sprintf(errmsg, "unknown variable: %s",
98 argv[i]);
99 error(USER, errmsg);
100 }
101 /* check settings */
102 checkvalues();
103 /* load RIF if any */
104 if (vdef(RIF))
105 getradfile(vval(RIF));
106 /* set defaults */
107 setdefaults(&hdg);
108 /* holodeck exists? */
109 if (!force && access(hdkfile, R_OK|W_OK) == 0)
110 error(USER,
111 "holodeck file exists -- use -f to overwrite");
112 /* create holodeck */
113 creatholo(&hdg);
114 } else { /* else load holodeck */
115 loadholo();
116 if (vdef(RIF)) /* load RIF if any */
117 getradfile(vval(RIF));
118 }
119 /* initialize */
120 initrholo();
121 /* run */
122 while (rholo())
123 ;
124 /* done */
125 quit(0);
126 userr:
127 fprintf(stderr,
128 "Usage: %s {-n nprocs|-o disp} [-w][-f] output.hdk [control.hif [VAR=val ..]]\n",
129 progname);
130 quit(1);
131 }
132
133
134 onsig(signo) /* fatal signal */
135 int signo;
136 {
137 static int gotsig = 0;
138
139 if (gotsig++) /* two signals and we're gone! */
140 _exit(signo);
141
142 alarm(30); /* allow 30 seconds to clean up */
143 signal(SIGALRM, SIG_DFL); /* make certain we do die */
144 eputs("signal - ");
145 eputs(sigerr[signo]);
146 eputs("\n");
147 quit(3);
148 }
149
150
151 sigdie(signo, msg) /* set fatal signal */
152 int signo;
153 char *msg;
154 {
155 if (signal(signo, onsig) == SIG_IGN)
156 signal(signo, SIG_IGN);
157 sigerr[signo] = msg;
158 }
159
160
161 int
162 resfmode(fd, mod) /* restrict open file access mode */
163 int fd, mod;
164 {
165 struct stat stbuf;
166 /* get original mode */
167 if (fstat(fd, &stbuf) < 0)
168 error(SYSTEM, "cannot stat open holodeck file");
169 mod &= stbuf.st_mode; /* always more restrictive */
170 if (mod == stbuf.st_mode)
171 return(-1); /* already set */
172 /* else change it */
173 if (fchmod(fd, mod) < 0) {
174 error(WARNING, "cannot change holodeck file access mode");
175 return(-1);
176 }
177 return(stbuf.st_mode); /* return original mode */
178 }
179
180
181 initrholo() /* get our holodeck running */
182 {
183 extern int global_packet();
184 register int i;
185
186 if (outdev != NULL) /* open output device */
187 disp_open(outdev);
188 else if (ncprocs > 0) /* else use global ray feed */
189 init_global();
190 /* record disk space limit */
191 if (!vdef(DISKSPACE))
192 maxdisk = 0;
193 else
194 maxdisk = 1024.*1024.*vflt(DISKSPACE);
195 /* record end time */
196 if (!vdef(TIME) || vflt(TIME) <= FTINY)
197 endtime = 0;
198 else
199 endtime = starttime + vflt(TIME)*3600.;
200 /* set up memory cache */
201 if (outdev == NULL)
202 hdcachesize = 0; /* manual flushing */
203 else if (vdef(CACHE))
204 hdcachesize = 1024.*1024.*vflt(CACHE);
205 /* open report file */
206 if (vdef(REPORT)) {
207 register char *s = sskip2(vval(REPORT), 1);
208 if (*s && freopen(s, "a", stderr) == NULL)
209 quit(2);
210 }
211 /* start rtrace */
212 if (ncprocs > 0) {
213 i = start_rtrace();
214 if (i < 1)
215 error(USER, "cannot start rtrace process");
216 if (vdef(REPORT)) { /* make first report */
217 printargs(rtargc, rtargv, stderr);
218 report(0);
219 }
220 /* allocate packets */
221 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
222 if (freepacks == NULL)
223 goto memerr;
224 freepacks[--i].nr = 0;
225 freepacks[i].next = NULL;
226 if (!vbool(OBSTRUCTIONS)) {
227 freepacks[i].offset = (float *)bmalloc(
228 RPACKSIZ*sizeof(float)*(i+1) );
229 if (freepacks[i].offset == NULL)
230 goto memerr;
231 } else
232 freepacks[i].offset = NULL;
233 while (i--) {
234 freepacks[i].nr = 0;
235 freepacks[i].offset = freepacks[i+1].offset == NULL ?
236 NULL : freepacks[i+1].offset+RPACKSIZ ;
237 freepacks[i].next = &freepacks[i+1];
238 }
239 }
240 /* set up signal handling */
241 sigdie(SIGINT, "Interrupt");
242 sigdie(SIGHUP, "Hangup");
243 sigdie(SIGTERM, "Terminate");
244 sigdie(SIGPIPE, "Broken pipe");
245 sigdie(SIGALRM, "Alarm clock");
246 #ifdef SIGXCPU
247 sigdie(SIGXCPU, "CPU limit exceeded");
248 sigdie(SIGXFSZ, "File size exceeded");
249 #endif
250 /* protect holodeck file */
251 orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444);
252 return;
253 memerr:
254 error(SYSTEM, "out of memory in initrholo");
255 }
256
257
258 rholo() /* holodeck main loop */
259 {
260 static int idle = 1;
261 PACKET *pl = NULL, *plend;
262 register PACKET *p;
263 time_t t;
264 long l;
265
266 if (outdev != NULL) /* check display */
267 if (!disp_check(idle))
268 return(0);
269 /* display only? */
270 if (ncprocs <= 0)
271 return(1);
272 /* check file size */
273 if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) {
274 error(WARNING, "file limit exceeded");
275 return(0);
276 }
277 /* check time */
278 if (endtime > 0 || reporttime > 0)
279 t = time(NULL);
280 if (endtime > 0 && t >= endtime) {
281 error(WARNING, "time limit exceeded");
282 return(0);
283 }
284 if (reporttime > 0 && t >= reporttime)
285 report(t);
286 /* get packets to process */
287 while (freepacks != NULL) {
288 p = freepacks; freepacks = p->next; p->next = NULL;
289 if (!next_packet(p)) {
290 p->next = freepacks; freepacks = p;
291 break;
292 }
293 if (pl == NULL) pl = p;
294 else plend->next = p;
295 plend = p;
296 }
297 idle = pl == NULL && freepacks != NULL;
298 /* are we out of stuff to do? */
299 if (idle && outdev == NULL)
300 return(0);
301 /* else process packets */
302 done_packets(do_packets(pl));
303 return(1); /* and continue */
304 }
305
306
307 report(t) /* report progress so far */
308 time_t t;
309 {
310 if (t == 0)
311 t = time(NULL);
312 fprintf(stderr, "%s: %ld packets (%ld rays) done after %.2f hours\n",
313 progname, npacksdone, nraysdone, (t-starttime)/3600.);
314 fflush(stderr);
315 if (vdef(REPORT))
316 reporttime = t + (time_t)(vflt(REPORT)*60.+.5);
317 }
318
319
320 setdefaults(gp) /* set default values */
321 register HDGRID *gp;
322 {
323 extern char *atos();
324 register int i;
325 double len[3], maxlen, d;
326 char buf[64];
327
328 if (!vdef(SECTION)) {
329 sprintf(errmsg, "%s must be defined", vnam(SECTION));
330 error(USER, errmsg);
331 }
332 if (vdef(SECTION) > 1) {
333 sprintf(errmsg, "ignoring all but first %s", vnam(SECTION));
334 error(WARNING, errmsg);
335 }
336 if (sscanf(vval(SECTION),
337 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf",
338 &gp->orig[0], &gp->orig[1], &gp->orig[2],
339 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
340 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
341 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2]) != 12)
342 badvalue(SECTION);
343 maxlen = 0.;
344 for (i = 0; i < 3; i++)
345 if ((len[i] = VLEN(gp->xv[i])) > maxlen)
346 maxlen = len[i];
347 if (!vdef(GRID)) {
348 sprintf(buf, "%.4f", maxlen/8.);
349 vval(GRID) = savqstr(buf);
350 vdef(GRID)++;
351 }
352 if ((d = vflt(GRID)) <= FTINY)
353 badvalue(GRID);
354 for (i = 0; i < 3; i++)
355 gp->grid[i] = len[i]/d + (1.-FTINY);
356 if (!vdef(EXPOSURE)) {
357 sprintf(errmsg, "%s must be defined", vnam(EXPOSURE));
358 error(USER, errmsg);
359 }
360 expval = vval(EXPOSURE)[0] == '-' || vval(EXPOSURE)[0] == '+' ?
361 pow(2., vflt(EXPOSURE)) : vflt(EXPOSURE);
362 if (!vdef(OCTREE)) {
363 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
364 error(SYSTEM, "out of memory");
365 sprintf(vval(OCTREE), "%s.oct", froot);
366 vdef(OCTREE)++;
367 }
368 if (!vdef(OBSTRUCTIONS)) {
369 vval(OBSTRUCTIONS) = "T";
370 vdef(OBSTRUCTIONS)++;
371 }
372 if (!vdef(OCCUPANCY)) {
373 vval(OCCUPANCY) = "U";
374 vdef(OCCUPANCY)++;
375 }
376 /* append rendering options */
377 if (vdef(RENDER))
378 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
379 }
380
381
382 creatholo(gp) /* create a holodeck output file */
383 HDGRID *gp;
384 {
385 extern char VersionID[];
386 long endloc = 0;
387 int fd;
388 FILE *fp;
389 /* open & truncate file */
390 if ((fp = fopen(hdkfile, "w+")) == NULL) {
391 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
392 error(SYSTEM, errmsg);
393 }
394 /* write information header */
395 newheader("RADIANCE", fp);
396 fprintf(fp, "SOFTWARE= %s\n", VersionID);
397 printvars(fp);
398 fputformat(HOLOFMT, fp);
399 fputc('\n', fp);
400 putw(HOLOMAGIC, fp); /* put magic number & terminus */
401 fwrite(&endloc, sizeof(long), 1, fp);
402 fd = dup(fileno(fp));
403 fclose(fp); /* flush and close stdio stream */
404 hdinit(fd, gp); /* allocate and initialize index */
405 }
406
407
408 headline(s) /* process information header line */
409 char *s;
410 {
411 extern char FMTSTR[];
412 register char *cp;
413 char fmt[32];
414
415 if (formatval(fmt, s)) {
416 if (strcmp(fmt, HOLOFMT)) {
417 sprintf(errmsg, "%s file \"%s\" has %s%s",
418 HOLOFMT, hdkfile, FMTSTR, fmt);
419 error(USER, errmsg);
420 }
421 return;
422 }
423 for (cp = s; *cp; cp++) /* take off any comments */
424 if (*cp == '#') {
425 *cp = '\0';
426 break;
427 }
428 setvariable(s, matchvar); /* don't flag errors */
429 }
430
431
432 loadholo() /* start loading a holodeck from fname */
433 {
434 extern long ftell();
435 FILE *fp;
436 int fd;
437 long fpos;
438 /* open holodeck file */
439 if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) {
440 sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile,
441 ncprocs>0 ? "appending" : "reading");
442 error(SYSTEM, errmsg);
443 }
444 /* load variables from header */
445 getheader(fp, headline, NULL);
446 /* check magic number */
447 if (getw(fp) != HOLOMAGIC) {
448 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
449 hdkfile);
450 error(USER, errmsg);
451 }
452 fread(&fpos, sizeof(long), 1, fp);
453 if (fpos != 0)
454 error(WARNING, "ignoring multiple sections in holodeck file");
455 fpos = ftell(fp); /* get stdio position */
456 fd = dup(fileno(fp));
457 fclose(fp); /* done with stdio */
458 lseek(fd, fpos, 0); /* align system file pointer */
459 hdinit(fd, NULL); /* allocate and load index */
460 }
461
462
463 done_packets(pl) /* handle finished packets */
464 PACKET *pl;
465 {
466 static int n2flush = 0;
467 register PACKET *p;
468
469 while (pl != NULL) {
470 p = pl; pl = p->next; p->next = NULL;
471 if (p->nr > 0) { /* add to holodeck */
472 bcopy((char *)p->ra,
473 (char *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
474 p->nr*sizeof(RAYVAL));
475 if (outdev != NULL) /* display it */
476 disp_packet((PACKHEAD *)p);
477 if (hdcachesize <= 0) /* manual flushing */
478 n2flush += p->nr;
479 nraysdone += p->nr;
480 npacksdone++;
481 }
482 p->nr = 0; /* push onto free list */
483 p->next = freepacks;
484 freepacks = p;
485 }
486 if (n2flush > 512*RPACKSIZ*ncprocs) {
487 hdflush(NULL); /* flush holodeck buffers */
488 n2flush = 0;
489 }
490 }
491
492
493 getradfile(rfargs) /* run rad and get needed variables */
494 char *rfargs;
495 {
496 static short mvar[] = {OCTREE,EXPOSURE,-1};
497 static char tf1[] = TEMPLATE;
498 char tf2[64];
499 char combuf[256];
500 char *pippt;
501 register int i;
502 register char *cp;
503 /* create rad command */
504 mktemp(tf1);
505 sprintf(tf2, "%s.rif", tf1);
506 sprintf(combuf,
507 "rad -v 0 -s -e -w %s OPTFILE=%s | egrep '^[ \t]*(NOMATCH",
508 rfargs, tf1);
509 cp = combuf;
510 while (*cp){
511 if (*cp == '|') pippt = cp;
512 cp++;
513 } /* match unset variables */
514 for (i = 0; mvar[i] >= 0; i++)
515 if (!vdef(mvar[i])) {
516 *cp++ = '|';
517 strcpy(cp, vnam(mvar[i]));
518 while (*cp) cp++;
519 pippt = NULL;
520 }
521 if (pippt != NULL)
522 strcpy(pippt, "> /dev/null"); /* nothing to match */
523 else
524 sprintf(cp, ")[ \t]*=' > %s", tf2);
525 if (system(combuf)) {
526 error(SYSTEM, "cannot execute rad command");
527 unlink(tf2); /* clean up */
528 unlink(tf1);
529 quit(1);
530 }
531 if (pippt == NULL) {
532 loadvars(tf2); /* load variables */
533 unlink(tf2);
534 }
535 rtargc += wordfile(rtargv+rtargc, tf1); /* get rtrace options */
536 unlink(tf1); /* clean up */
537 }
538
539
540 rootname(rn, fn) /* remove tail from end of fn */
541 register char *rn, *fn;
542 {
543 char *tp, *dp;
544
545 for (tp = NULL, dp = rn; *rn = *fn++; rn++)
546 if (ISDIRSEP(*rn))
547 dp = rn;
548 else if (*rn == '.')
549 tp = rn;
550 if (tp != NULL && tp > dp)
551 *tp = '\0';
552 }
553
554
555 badvalue(vc) /* report bad variable value and exit */
556 int vc;
557 {
558 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
559 error(USER, errmsg);
560 }
561
562
563 eputs(s) /* put error message to stderr */
564 register char *s;
565 {
566 static int midline = 0;
567
568 if (!*s)
569 return;
570 if (!midline++) { /* prepend line with program name */
571 fputs(progname, stderr);
572 fputs(": ", stderr);
573 }
574 fputs(s, stderr);
575 if (s[strlen(s)-1] == '\n') {
576 fflush(stderr);
577 midline = 0;
578 }
579 }
580
581
582 wputs(s) /* put warning string to stderr */
583 char *s;
584 {
585 if (!nowarn)
586 eputs(s);
587 }
588
589
590 quit(ec) /* exit program gracefully */
591 int ec;
592 {
593 int status = 0;
594
595 if (hdlist[0] != NULL) { /* flush holodeck */
596 if (ncprocs > 0) {
597 done_packets(flush_queue());
598 status = end_rtrace(); /* close rtrace */
599 hdflush(NULL);
600 if (vdef(REPORT)) {
601 long fsiz, fuse;
602 report(0);
603 fsiz = hdfilen(hdlist[0]->fd);
604 fuse = hdfiluse(hdlist[0]->fd, 1);
605 fprintf(stderr,
606 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
607 hdkfile, fsiz/(1024.*1024.),
608 100.*(fsiz-fuse)/fsiz);
609 }
610 } else
611 hdflush(NULL);
612 }
613 if (orig_mode >= 0) /* reset holodeck access mode */
614 fchmod(hdlist[0]->fd, orig_mode);
615 if (outdev != NULL) /* close display */
616 disp_close();
617 exit(ec ? ec : status); /* exit */
618 }