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root/radiance/ray/src/hd/rholo.c
Revision: 3.30
Committed: Fri Dec 19 10:41:42 1997 UTC (26 years, 4 months ago) by gregl
Content type: text/plain
Branch: MAIN
Changes since 3.29: +10 -9 lines
Log Message:
fixed another bug in idle logic of rholo()

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 "random.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[256]; /* root file name */
25
26 int nowarn = 0; /* turn warnings off? */
27
28 int ncprocs = 0; /* desired number of compute processes */
29
30 char *outdev = NULL; /* output device name */
31
32 int readinp = 0; /* read commands from stdin */
33
34 int force = 0; /* allow overwrite of holodeck */
35
36 time_t starttime; /* time we got started */
37 time_t endtime; /* time we should end by */
38 time_t reporttime; /* time for next report */
39
40 long maxdisk; /* maximum file space (bytes) */
41
42 int rtargc = 1; /* rtrace command */
43 char *rtargv[128] = {"rtrace", NULL};
44
45 int orig_mode = -1; /* original file mode (-1 if unchanged) */
46
47 long nraysdone = 0L; /* number of rays done */
48 long npacksdone = 0L; /* number of packets done */
49
50 PACKET *freepacks; /* available packets */
51
52 char *sigerr[NSIG]; /* signal error messages */
53
54 extern time_t time();
55
56
57 main(argc, argv)
58 int argc;
59 char *argv[];
60 {
61 int i;
62 /* mark start time */
63 starttime = time(NULL);
64 initurand(16384); /* initialize urand */
65 progname = argv[0]; /* get arguments */
66 for (i = 1; i < argc && argv[i][0] == '-'; i++)
67 switch (argv[i][1]) {
68 case 'w': /* turn off warnings */
69 nowarn++;
70 break;
71 case 'f': /* force overwrite */
72 force++;
73 break;
74 case 'i': /* read input from stdin */
75 readinp++;
76 break;
77 case 'n': /* compute processes */
78 if (i >= argc-2)
79 goto userr;
80 ncprocs = atoi(argv[++i]);
81 break;
82 case 'o': /* output display */
83 if (i >= argc-2)
84 goto userr;
85 outdev = argv[++i];
86 break;
87 default:
88 goto userr;
89 }
90 /* get root file name */
91 rootname(froot, hdkfile=argv[i++]);
92 /* load variables? */
93 if (i < argc)
94 if (argv[i][0] != '-' && argv[i][0] != '+')
95 loadvars(argv[i]); /* load variables from file */
96
97 if (i >= argc || argv[i][0] == '+')
98 loadholo(); /* load existing holodeck */
99
100 while (++i < argc) /* get command line settings */
101 if (setvariable(argv[i], matchvar) < 0) {
102 sprintf(errmsg, "unknown variable: %s", argv[i]);
103 error(USER, errmsg);
104 }
105 /* check settings */
106 checkvalues();
107 /* load RIF if any */
108 getradfile();
109
110 if (hdlist[0] == NULL) { /* create new holodeck */
111 HDGRID hdg[HDMAX];
112 /* set defaults */
113 setdefaults(hdg);
114 /* holodeck exists? */
115 if (!force && access(hdkfile, R_OK|W_OK) == 0)
116 error(USER,
117 "holodeck file exists -- use -f to overwrite");
118 /* create holodeck */
119 creatholo(hdg);
120 } else /* else just set defaults */
121 setdefaults(NULL);
122 /* initialize */
123 initrholo();
124 /* main loop */
125 while (rholo())
126 ;
127 /* done */
128 quit(0);
129 userr:
130 fprintf(stderr,
131 "Usage: %s [-n nprocs][-o disp][-w][-f] output.hdk [control.hif|+|- [VAR=val ..]]\n",
132 progname);
133 quit(1);
134 }
135
136
137 onsig(signo) /* fatal signal */
138 int signo;
139 {
140 static int gotsig = 0;
141
142 if (gotsig++) /* two signals and we're gone! */
143 _exit(signo);
144
145 alarm(60); /* allow 60 seconds to clean up */
146 signal(SIGALRM, SIG_DFL); /* make certain we do die */
147 eputs("signal - ");
148 eputs(sigerr[signo]);
149 eputs("\n");
150 quit(3);
151 }
152
153
154 sigdie(signo, msg) /* set fatal signal */
155 int signo;
156 char *msg;
157 {
158 if (signal(signo, onsig) == SIG_IGN)
159 signal(signo, SIG_IGN);
160 sigerr[signo] = msg;
161 }
162
163
164 int
165 resfmode(fd, mod) /* restrict open file access mode */
166 int fd, mod;
167 {
168 struct stat stbuf;
169 /* get original mode */
170 if (fstat(fd, &stbuf) < 0)
171 error(SYSTEM, "cannot stat open holodeck file");
172 mod &= stbuf.st_mode; /* always more restrictive */
173 if (mod == stbuf.st_mode)
174 return(-1); /* already set */
175 /* else change it */
176 if (fchmod(fd, mod) < 0) {
177 error(WARNING, "cannot change holodeck file access mode");
178 return(-1);
179 }
180 return(stbuf.st_mode); /* return original mode */
181 }
182
183
184 initrholo() /* get our holodeck running */
185 {
186 extern int global_packet();
187 register int i;
188 /* close holodeck on exec() */
189 fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC);
190
191 if (outdev != NULL) /* open output device */
192 disp_open(outdev);
193 else if (ncprocs > 0) /* else use global ray feed */
194 init_global();
195 /* record disk space limit */
196 if (!vdef(DISKSPACE))
197 maxdisk = 0;
198 else
199 maxdisk = 1024.*1024.*vflt(DISKSPACE);
200 /* record end time */
201 if (!vdef(TIME) || vflt(TIME) <= FTINY)
202 endtime = 0;
203 else
204 endtime = starttime + vflt(TIME)*3600. + .5;
205 /* set up memory cache */
206 if (outdev == NULL)
207 hdcachesize = 0; /* manual flushing */
208 else if (vdef(CACHE))
209 hdcachesize = 1024.*1024.*vflt(CACHE);
210 /* open report file */
211 if (vdef(REPORT)) {
212 register char *s = sskip2(vval(REPORT), 1);
213 if (*s && freopen(s, "a", stderr) == NULL)
214 quit(2);
215 }
216 /* start rtrace */
217 if (ncprocs > 0) {
218 i = start_rtrace();
219 if (i < 1)
220 error(USER, "cannot start rtrace process(es)");
221 if (vdef(REPORT)) { /* make first report */
222 printargs(rtargc, rtargv, stderr);
223 report(0);
224 }
225 /* allocate packets */
226 freepacks = (PACKET *)bmalloc(i*sizeof(PACKET));
227 if (freepacks == NULL)
228 goto memerr;
229 freepacks[--i].nr = 0;
230 freepacks[i].next = NULL;
231 if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
232 freepacks[i].offset = (float *)bmalloc(
233 RPACKSIZ*sizeof(float)*(i+1) );
234 if (freepacks[i].offset == NULL)
235 goto memerr;
236 } else
237 freepacks[i].offset = NULL;
238 while (i--) {
239 freepacks[i].nr = 0;
240 freepacks[i].offset = freepacks[i+1].offset == NULL ?
241 NULL : freepacks[i+1].offset+RPACKSIZ ;
242 freepacks[i].next = &freepacks[i+1];
243 }
244 }
245 /* set up signal handling */
246 sigdie(SIGINT, "Interrupt");
247 sigdie(SIGHUP, "Hangup");
248 sigdie(SIGTERM, "Terminate");
249 sigdie(SIGPIPE, "Broken pipe");
250 sigdie(SIGALRM, "Alarm clock");
251 #ifdef SIGXCPU
252 sigdie(SIGXCPU, "CPU limit exceeded");
253 sigdie(SIGXFSZ, "File size exceeded");
254 #endif
255 /* protect holodeck file */
256 orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444);
257 return;
258 memerr:
259 error(SYSTEM, "out of memory in initrholo");
260 }
261
262
263 rholo() /* holodeck main loop */
264 {
265 static int idle = 0;
266 PACKET *pl = NULL, *plend;
267 register PACKET *p;
268 time_t t;
269 long l;
270 /* check display */
271 if (nprocs <= 0)
272 idle = 1;
273 if (outdev != NULL) {
274 if (!disp_check(idle))
275 return(0); /* quit request */
276 if (nprocs <= 0)
277 return(1);
278 } else if (idle)
279 return(0); /* all done */
280 /* check file size */
281 if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) {
282 error(WARNING, "file limit exceeded");
283 done_rtrace();
284 return(1); /* comes back */
285 }
286 /* check time */
287 if (endtime > 0 || reporttime > 0)
288 t = time(NULL);
289 if (endtime > 0 && t >= endtime) {
290 error(WARNING, "time limit exceeded");
291 done_rtrace();
292 return(1); /* comes back */
293 }
294 if (reporttime > 0 && t >= reporttime)
295 report(t);
296 idle = 0; /* get packets to process */
297 while (freepacks != NULL) {
298 p = freepacks; freepacks = p->next; p->next = NULL;
299 if (!next_packet(p)) {
300 p->next = freepacks; freepacks = p;
301 idle = 1;
302 break;
303 }
304 if (pl == NULL) pl = p;
305 else plend->next = p;
306 plend = p;
307 }
308 /* process packets */
309 done_packets(do_packets(pl));
310 return(1); /* and continue */
311 }
312
313
314 setdefaults(gp) /* set default values */
315 register HDGRID *gp;
316 {
317 extern char *atos();
318 register int i;
319 int n;
320 double len[3], maxlen, d;
321 char buf[64];
322
323 if (!vdef(SECTION)) {
324 sprintf(errmsg, "%s must be defined", vnam(SECTION));
325 error(USER, errmsg);
326 }
327 if (!vdef(OCTREE)) {
328 if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL)
329 error(SYSTEM, "out of memory");
330 sprintf(vval(OCTREE), "%s.oct", froot);
331 vdef(OCTREE)++;
332 }
333 if (!vdef(VDIST)) {
334 vval(VDIST) = "F";
335 vdef(VDIST)++;
336 }
337 /* append rendering options */
338 if (vdef(RENDER))
339 rtargc += wordstring(rtargv+rtargc, vval(RENDER));
340
341 if (gp == NULL) /* already initialized? */
342 return;
343 /* set grid parameters */
344 for (n = 0; n < vdef(SECTION); n++, gp++) {
345 gp->grid[0] = gp->grid[1] = gp->grid[2] = 0;
346 if (sscanf(nvalue(SECTION, n),
347 "%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd",
348 &gp->orig[0], &gp->orig[1], &gp->orig[2],
349 &gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2],
350 &gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2],
351 &gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2],
352 &gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12)
353 badvalue(SECTION);
354 maxlen = 0.;
355 for (i = 0; i < 3; i++)
356 if ((len[i] = VLEN(gp->xv[i])) > maxlen)
357 maxlen = len[i];
358 if (!vdef(GRID))
359 d = 0.125*maxlen;
360 else if ((d = vflt(GRID)) <= FTINY)
361 badvalue(GRID);
362 for (i = 0; i < 3; i++)
363 if (gp->grid[i] <= 0)
364 gp->grid[i] = len[i]/d + (1.-FTINY);
365 }
366 }
367
368
369 creatholo(gp) /* create a holodeck output file */
370 HDGRID *gp;
371 {
372 extern char VersionID[];
373 int4 lastloc, nextloc;
374 int n;
375 int fd;
376 FILE *fp;
377 /* open & truncate file */
378 if ((fp = fopen(hdkfile, "w+")) == NULL) {
379 sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile);
380 error(SYSTEM, errmsg);
381 }
382 /* write information header */
383 newheader("RADIANCE", fp);
384 fprintf(fp, "SOFTWARE= %s\n", VersionID);
385 printvars(fp);
386 fputformat(HOLOFMT, fp);
387 fputc('\n', fp);
388 putw(HOLOMAGIC, fp); /* put magic number */
389 fd = dup(fileno(fp));
390 fclose(fp); /* flush and close stdio stream */
391 lastloc = lseek(fd, 0L, 2);
392 for (n = vdef(SECTION); n--; gp++) { /* initialize each section */
393 nextloc = 0L;
394 write(fd, (char *)&nextloc, sizeof(nextloc));
395 hdinit(fd, gp); /* writes beam index */
396 if (!n)
397 break;
398 nextloc = hdfilen(fd); /* write section pointer */
399 if (lseek(fd, (long)lastloc, 0) < 0)
400 error(SYSTEM,
401 "cannot seek on holodeck file in creatholo");
402 write(fd, (char *)&nextloc, sizeof(nextloc));
403 lseek(fd, (long)(lastloc=nextloc), 0);
404 }
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 int n;
438 int4 nextloc;
439 /* open holodeck file */
440 if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) {
441 sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile,
442 ncprocs>0 ? "appending" : "reading");
443 error(SYSTEM, errmsg);
444 }
445 /* load variables from header */
446 getheader(fp, headline, NULL);
447 /* check magic number */
448 if (getw(fp) != HOLOMAGIC) {
449 sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
450 hdkfile);
451 error(USER, errmsg);
452 }
453 nextloc = ftell(fp); /* get stdio position */
454 fd = dup(fileno(fp));
455 fclose(fp); /* done with stdio */
456 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
457 lseek(fd, (long)nextloc, 0);
458 read(fd, (char *)&nextloc, sizeof(nextloc));
459 hdinit(fd, NULL);
460 }
461 if (n != vdef(SECTION)) {
462 sprintf(errmsg, "number of sections does not match %s setting",
463 vnam(SECTION));
464 error(WARNING, errmsg);
465 }
466 }
467
468
469 done_packets(pl) /* handle finished packets */
470 PACKET *pl;
471 {
472 static int n2flush = 0;
473 register PACKET *p;
474
475 while (pl != NULL) {
476 p = pl; pl = p->next; p->next = NULL;
477 if (p->nr > 0) { /* add to holodeck */
478 bcopy((char *)p->ra,
479 (char *)hdnewrays(hdlist[p->hd],p->bi,p->nr),
480 p->nr*sizeof(RAYVAL));
481 if (outdev != NULL) /* display it */
482 disp_packet((PACKHEAD *)p);
483 if (hdcachesize <= 0) /* manual flushing */
484 n2flush += p->nr;
485 nraysdone += p->nr;
486 npacksdone++;
487 }
488 p->nr = 0; /* push onto free list */
489 p->next = freepacks;
490 freepacks = p;
491 }
492 if (n2flush > 512*RPACKSIZ*nprocs) {
493 hdflush(NULL); /* flush holodeck buffers */
494 n2flush = 0;
495 }
496 }
497
498
499 rootname(rn, fn) /* remove tail from end of fn */
500 register char *rn, *fn;
501 {
502 char *tp, *dp;
503
504 for (tp = NULL, dp = rn; *rn = *fn++; rn++)
505 if (*rn == '/')
506 dp = rn;
507 else if (*rn == '.')
508 tp = rn;
509 if (tp != NULL && tp > dp)
510 *tp = '\0';
511 }
512
513
514 badvalue(vc) /* report bad variable value and exit */
515 int vc;
516 {
517 sprintf(errmsg, "bad value for variable '%s'", vnam(vc));
518 error(USER, errmsg);
519 }
520
521
522 eputs(s) /* put error message to stderr */
523 register char *s;
524 {
525 static int midline = 0;
526
527 if (!*s)
528 return;
529 if (!midline++) { /* prepend line with program name */
530 fputs(progname, stderr);
531 fputs(": ", stderr);
532 }
533 fputs(s, stderr);
534 if (s[strlen(s)-1] == '\n') {
535 fflush(stderr);
536 midline = 0;
537 }
538 }
539
540
541 wputs(s) /* put warning string to stderr */
542 char *s;
543 {
544 if (!nowarn)
545 eputs(s);
546 }
547
548
549 quit(ec) /* exit program gracefully */
550 int ec;
551 {
552 int status = 0;
553
554 if (hdlist[0] != NULL) { /* close holodeck */
555 if (nprocs > 0)
556 status = done_rtrace(); /* calls hdsync() */
557 if (ncprocs > 0 && vdef(REPORT)) {
558 long fsiz, fuse;
559 fsiz = hdfilen(hdlist[0]->fd);
560 fuse = hdfiluse(hdlist[0]->fd, 1);
561 fprintf(stderr,
562 "%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n",
563 hdkfile, fsiz/(1024.*1024.),
564 100.*(fsiz-fuse)/fsiz);
565 }
566 }
567 if (orig_mode >= 0) /* reset holodeck access mode */
568 fchmod(hdlist[0]->fd, orig_mode);
569 if (outdev != NULL) /* close display */
570 disp_close();
571 exit(ec ? ec : status); /* exit */
572 }