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 |
if (i >= argc) |
92 |
goto userr; |
93 |
rootname(froot, hdkfile=argv[i++]); |
94 |
/* load variables? */ |
95 |
if (i < argc) |
96 |
if (argv[i][0] != '-' && argv[i][0] != '+') |
97 |
loadvars(argv[i]); /* load variables from file */ |
98 |
|
99 |
if (i >= argc || argv[i][0] == '+') |
100 |
loadholo(); /* load existing holodeck */ |
101 |
|
102 |
while (++i < argc) /* get command line settings */ |
103 |
if (setvariable(argv[i], matchvar) < 0) { |
104 |
sprintf(errmsg, "unknown variable: %s", argv[i]); |
105 |
error(USER, errmsg); |
106 |
} |
107 |
/* check settings */ |
108 |
checkvalues(); |
109 |
/* load RIF if any */ |
110 |
getradfile(); |
111 |
|
112 |
if (hdlist[0] == NULL) { /* create new holodeck */ |
113 |
HDGRID hdg[HDMAX]; |
114 |
/* set defaults */ |
115 |
setdefaults(hdg); |
116 |
/* holodeck exists? */ |
117 |
if (!force && access(hdkfile, R_OK|W_OK) == 0) |
118 |
error(USER, |
119 |
"holodeck file exists -- use -f to overwrite"); |
120 |
/* create holodeck */ |
121 |
creatholo(hdg); |
122 |
} else /* else just set defaults */ |
123 |
setdefaults(NULL); |
124 |
/* initialize */ |
125 |
initrholo(); |
126 |
/* main loop */ |
127 |
while (rholo()) |
128 |
; |
129 |
/* done */ |
130 |
quit(0); |
131 |
userr: |
132 |
fprintf(stderr, |
133 |
"Usage: %s [-n nprocs][-o disp][-w][-f] output.hdk [control.hif|+|- [VAR=val ..]]\n", |
134 |
progname); |
135 |
quit(1); |
136 |
} |
137 |
|
138 |
|
139 |
onsig(signo) /* fatal signal */ |
140 |
int signo; |
141 |
{ |
142 |
static int gotsig = 0; |
143 |
|
144 |
if (gotsig++) /* two signals and we're gone! */ |
145 |
_exit(signo); |
146 |
|
147 |
alarm(60); /* allow 60 seconds to clean up */ |
148 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
149 |
eputs("signal - "); |
150 |
eputs(sigerr[signo]); |
151 |
eputs("\n"); |
152 |
quit(3); |
153 |
} |
154 |
|
155 |
|
156 |
sigdie(signo, msg) /* set fatal signal */ |
157 |
int signo; |
158 |
char *msg; |
159 |
{ |
160 |
if (signal(signo, onsig) == SIG_IGN) |
161 |
signal(signo, SIG_IGN); |
162 |
sigerr[signo] = msg; |
163 |
} |
164 |
|
165 |
|
166 |
int |
167 |
resfmode(fd, mod) /* restrict open file access mode */ |
168 |
int fd, mod; |
169 |
{ |
170 |
struct stat stbuf; |
171 |
/* get original mode */ |
172 |
if (fstat(fd, &stbuf) < 0) |
173 |
error(SYSTEM, "cannot stat open holodeck file"); |
174 |
mod &= stbuf.st_mode; /* always more restrictive */ |
175 |
if (mod == stbuf.st_mode) |
176 |
return(-1); /* already set */ |
177 |
/* else change it */ |
178 |
if (fchmod(fd, mod) < 0) { |
179 |
error(WARNING, "cannot change holodeck file access mode"); |
180 |
return(-1); |
181 |
} |
182 |
return(stbuf.st_mode); /* return original mode */ |
183 |
} |
184 |
|
185 |
|
186 |
initrholo() /* get our holodeck running */ |
187 |
{ |
188 |
extern int global_packet(); |
189 |
register int i; |
190 |
/* close holodeck on exec() */ |
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fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC); |
192 |
|
193 |
if (outdev != NULL) /* open output device */ |
194 |
disp_open(outdev); |
195 |
else if (ncprocs > 0) /* else use global ray feed */ |
196 |
init_global(); |
197 |
/* record disk space limit */ |
198 |
if (!vdef(DISKSPACE)) |
199 |
maxdisk = 0; |
200 |
else |
201 |
maxdisk = 1024.*1024.*vflt(DISKSPACE); |
202 |
/* record end time */ |
203 |
if (!vdef(TIME) || vflt(TIME) <= FTINY) |
204 |
endtime = 0; |
205 |
else |
206 |
endtime = starttime + vflt(TIME)*3600. + .5; |
207 |
/* set up memory cache */ |
208 |
if (outdev == NULL) |
209 |
hdcachesize = 0; /* manual flushing */ |
210 |
else if (vdef(CACHE)) |
211 |
hdcachesize = 1024.*1024.*vflt(CACHE); |
212 |
/* open report file */ |
213 |
if (vdef(REPORT)) { |
214 |
register char *s = sskip2(vval(REPORT), 1); |
215 |
if (*s && freopen(s, "a", stderr) == NULL) |
216 |
quit(2); |
217 |
} |
218 |
/* start rtrace */ |
219 |
if (ncprocs > 0) { |
220 |
i = start_rtrace(); |
221 |
if (i < 1) |
222 |
error(USER, "cannot start rtrace process(es)"); |
223 |
if (vdef(REPORT)) { /* make first report */ |
224 |
printargs(rtargc, rtargv, stderr); |
225 |
report(0); |
226 |
} |
227 |
/* allocate packets */ |
228 |
freepacks = (PACKET *)bmalloc(i*sizeof(PACKET)); |
229 |
if (freepacks == NULL) |
230 |
goto memerr; |
231 |
freepacks[--i].nr = 0; |
232 |
freepacks[i].next = NULL; |
233 |
if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) { |
234 |
freepacks[i].offset = (float *)bmalloc( |
235 |
RPACKSIZ*sizeof(float)*(i+1) ); |
236 |
if (freepacks[i].offset == NULL) |
237 |
goto memerr; |
238 |
} else |
239 |
freepacks[i].offset = NULL; |
240 |
while (i--) { |
241 |
freepacks[i].nr = 0; |
242 |
freepacks[i].offset = freepacks[i+1].offset == NULL ? |
243 |
NULL : freepacks[i+1].offset+RPACKSIZ ; |
244 |
freepacks[i].next = &freepacks[i+1]; |
245 |
} |
246 |
} |
247 |
/* set up signal handling */ |
248 |
sigdie(SIGINT, "Interrupt"); |
249 |
sigdie(SIGHUP, "Hangup"); |
250 |
sigdie(SIGTERM, "Terminate"); |
251 |
sigdie(SIGPIPE, "Broken pipe"); |
252 |
sigdie(SIGALRM, "Alarm clock"); |
253 |
#ifdef SIGXCPU |
254 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
255 |
sigdie(SIGXFSZ, "File size exceeded"); |
256 |
#endif |
257 |
/* protect holodeck file */ |
258 |
orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444); |
259 |
return; |
260 |
memerr: |
261 |
error(SYSTEM, "out of memory in initrholo"); |
262 |
} |
263 |
|
264 |
|
265 |
rholo() /* holodeck main loop */ |
266 |
{ |
267 |
static int idle = 0; |
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PACKET *pl = NULL, *plend; |
269 |
register PACKET *p; |
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time_t t; |
271 |
long l; |
272 |
/* check display */ |
273 |
if (nprocs <= 0) |
274 |
idle = 1; |
275 |
if (outdev != NULL) { |
276 |
if (!disp_check(idle)) |
277 |
return(0); /* quit request */ |
278 |
if (nprocs <= 0) |
279 |
return(1); |
280 |
} else if (idle) |
281 |
return(0); /* all done */ |
282 |
/* check file size */ |
283 |
if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) { |
284 |
error(WARNING, "file limit exceeded"); |
285 |
done_rtrace(); |
286 |
return(1); /* comes back */ |
287 |
} |
288 |
/* check time */ |
289 |
if (endtime > 0 || reporttime > 0) |
290 |
t = time(NULL); |
291 |
if (endtime > 0 && t >= endtime) { |
292 |
error(WARNING, "time limit exceeded"); |
293 |
done_rtrace(); |
294 |
return(1); /* comes back */ |
295 |
} |
296 |
if (reporttime > 0 && t >= reporttime) |
297 |
report(t); |
298 |
idle = 0; /* get packets to process */ |
299 |
while (freepacks != NULL) { |
300 |
p = freepacks; freepacks = p->next; p->next = NULL; |
301 |
if (!next_packet(p)) { |
302 |
p->next = freepacks; freepacks = p; |
303 |
idle = 1; |
304 |
break; |
305 |
} |
306 |
if (pl == NULL) pl = p; |
307 |
else plend->next = p; |
308 |
plend = p; |
309 |
} |
310 |
/* process packets */ |
311 |
done_packets(do_packets(pl)); |
312 |
return(1); /* and continue */ |
313 |
} |
314 |
|
315 |
|
316 |
setdefaults(gp) /* set default values */ |
317 |
register HDGRID *gp; |
318 |
{ |
319 |
extern char *atos(); |
320 |
register int i; |
321 |
int n; |
322 |
double len[3], maxlen, d; |
323 |
char buf[64]; |
324 |
|
325 |
if (!vdef(SECTION)) { |
326 |
sprintf(errmsg, "%s must be defined", vnam(SECTION)); |
327 |
error(USER, errmsg); |
328 |
} |
329 |
if (!vdef(OCTREE)) { |
330 |
if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL) |
331 |
error(SYSTEM, "out of memory"); |
332 |
sprintf(vval(OCTREE), "%s.oct", froot); |
333 |
vdef(OCTREE)++; |
334 |
} |
335 |
if (!vdef(VDIST)) { |
336 |
vval(VDIST) = "F"; |
337 |
vdef(VDIST)++; |
338 |
} |
339 |
/* append rendering options */ |
340 |
if (vdef(RENDER)) |
341 |
rtargc += wordstring(rtargv+rtargc, vval(RENDER)); |
342 |
|
343 |
if (gp == NULL) /* already initialized? */ |
344 |
return; |
345 |
/* set grid parameters */ |
346 |
for (n = 0; n < vdef(SECTION); n++, gp++) { |
347 |
gp->grid[0] = gp->grid[1] = gp->grid[2] = 0; |
348 |
if (sscanf(nvalue(SECTION, n), |
349 |
"%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd", |
350 |
&gp->orig[0], &gp->orig[1], &gp->orig[2], |
351 |
&gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2], |
352 |
&gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2], |
353 |
&gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2], |
354 |
&gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12) |
355 |
badvalue(SECTION); |
356 |
maxlen = 0.; |
357 |
for (i = 0; i < 3; i++) |
358 |
if ((len[i] = VLEN(gp->xv[i])) > maxlen) |
359 |
maxlen = len[i]; |
360 |
if (!vdef(GRID)) |
361 |
d = 0.125*maxlen; |
362 |
else if ((d = vflt(GRID)) <= FTINY) |
363 |
badvalue(GRID); |
364 |
for (i = 0; i < 3; i++) |
365 |
if (gp->grid[i] <= 0) |
366 |
gp->grid[i] = len[i]/d + (1.-FTINY); |
367 |
} |
368 |
} |
369 |
|
370 |
|
371 |
creatholo(gp) /* create a holodeck output file */ |
372 |
HDGRID *gp; |
373 |
{ |
374 |
extern char VersionID[]; |
375 |
int4 lastloc, nextloc; |
376 |
int n; |
377 |
int fd; |
378 |
FILE *fp; |
379 |
/* open & truncate file */ |
380 |
if ((fp = fopen(hdkfile, "w+")) == NULL) { |
381 |
sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile); |
382 |
error(SYSTEM, errmsg); |
383 |
} |
384 |
/* write information header */ |
385 |
newheader("RADIANCE", fp); |
386 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
387 |
printvars(fp); |
388 |
fputformat(HOLOFMT, fp); |
389 |
fputc('\n', fp); |
390 |
putw(HOLOMAGIC, fp); /* put magic number */ |
391 |
fd = dup(fileno(fp)); |
392 |
fclose(fp); /* flush and close stdio stream */ |
393 |
lastloc = lseek(fd, 0L, 2); |
394 |
for (n = vdef(SECTION); n--; gp++) { /* initialize each section */ |
395 |
nextloc = 0L; |
396 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
397 |
hdinit(fd, gp); /* writes beam index */ |
398 |
if (!n) |
399 |
break; |
400 |
nextloc = hdfilen(fd); /* write section pointer */ |
401 |
if (lseek(fd, (long)lastloc, 0) < 0) |
402 |
error(SYSTEM, |
403 |
"cannot seek on holodeck file in creatholo"); |
404 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
405 |
lseek(fd, (long)(lastloc=nextloc), 0); |
406 |
} |
407 |
} |
408 |
|
409 |
|
410 |
headline(s) /* process information header line */ |
411 |
char *s; |
412 |
{ |
413 |
extern char FMTSTR[]; |
414 |
register char *cp; |
415 |
char fmt[32]; |
416 |
|
417 |
if (formatval(fmt, s)) { |
418 |
if (strcmp(fmt, HOLOFMT)) { |
419 |
sprintf(errmsg, "%s file \"%s\" has %s%s", |
420 |
HOLOFMT, hdkfile, FMTSTR, fmt); |
421 |
error(USER, errmsg); |
422 |
} |
423 |
return; |
424 |
} |
425 |
for (cp = s; *cp; cp++) /* take off any comments */ |
426 |
if (*cp == '#') { |
427 |
*cp = '\0'; |
428 |
break; |
429 |
} |
430 |
setvariable(s, matchvar); /* don't flag errors */ |
431 |
} |
432 |
|
433 |
|
434 |
loadholo() /* start loading a holodeck from fname */ |
435 |
{ |
436 |
extern long ftell(); |
437 |
FILE *fp; |
438 |
int fd; |
439 |
int n; |
440 |
int4 nextloc; |
441 |
/* open holodeck file */ |
442 |
if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) { |
443 |
sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile, |
444 |
ncprocs>0 ? "appending" : "reading"); |
445 |
error(SYSTEM, errmsg); |
446 |
} |
447 |
/* load variables from header */ |
448 |
getheader(fp, headline, NULL); |
449 |
/* check magic number */ |
450 |
if (getw(fp) != HOLOMAGIC) { |
451 |
sprintf(errmsg, "bad magic number in holodeck file \"%s\"", |
452 |
hdkfile); |
453 |
error(USER, errmsg); |
454 |
} |
455 |
nextloc = ftell(fp); /* get stdio position */ |
456 |
fd = dup(fileno(fp)); |
457 |
fclose(fp); /* done with stdio */ |
458 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
459 |
lseek(fd, (long)nextloc, 0); |
460 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
461 |
hdinit(fd, NULL); |
462 |
} |
463 |
if (n != vdef(SECTION)) { |
464 |
sprintf(errmsg, "number of sections does not match %s setting", |
465 |
vnam(SECTION)); |
466 |
error(WARNING, errmsg); |
467 |
} |
468 |
} |
469 |
|
470 |
|
471 |
done_packets(pl) /* handle finished packets */ |
472 |
PACKET *pl; |
473 |
{ |
474 |
static int n2flush = 0; |
475 |
register PACKET *p; |
476 |
|
477 |
while (pl != NULL) { |
478 |
p = pl; pl = p->next; p->next = NULL; |
479 |
if (p->nr > 0) { /* add to holodeck */ |
480 |
bcopy((char *)p->ra, |
481 |
(char *)hdnewrays(hdlist[p->hd],p->bi,p->nr), |
482 |
p->nr*sizeof(RAYVAL)); |
483 |
if (outdev != NULL) /* display it */ |
484 |
disp_packet((PACKHEAD *)p); |
485 |
if (hdcachesize <= 0) /* manual flushing */ |
486 |
n2flush += p->nr; |
487 |
nraysdone += p->nr; |
488 |
npacksdone++; |
489 |
} |
490 |
p->nr = 0; /* push onto free list */ |
491 |
p->next = freepacks; |
492 |
freepacks = p; |
493 |
} |
494 |
if (n2flush > 1024*RPACKSIZ*nprocs) { |
495 |
hdflush(NULL); /* flush holodeck buffers */ |
496 |
n2flush = 0; |
497 |
} |
498 |
} |
499 |
|
500 |
|
501 |
rootname(rn, fn) /* remove tail from end of fn */ |
502 |
register char *rn, *fn; |
503 |
{ |
504 |
char *tp, *dp; |
505 |
|
506 |
for (tp = NULL, dp = rn; *rn = *fn++; rn++) |
507 |
if (*rn == '/') |
508 |
dp = rn; |
509 |
else if (*rn == '.') |
510 |
tp = rn; |
511 |
if (tp != NULL && tp > dp) |
512 |
*tp = '\0'; |
513 |
} |
514 |
|
515 |
|
516 |
badvalue(vc) /* report bad variable value and exit */ |
517 |
int vc; |
518 |
{ |
519 |
sprintf(errmsg, "bad value for variable '%s'", vnam(vc)); |
520 |
error(USER, errmsg); |
521 |
} |
522 |
|
523 |
|
524 |
eputs(s) /* put error message to stderr */ |
525 |
register char *s; |
526 |
{ |
527 |
static int midline = 0; |
528 |
|
529 |
if (!*s) |
530 |
return; |
531 |
if (!midline++) { /* prepend line with program name */ |
532 |
fputs(progname, stderr); |
533 |
fputs(": ", stderr); |
534 |
} |
535 |
fputs(s, stderr); |
536 |
if (s[strlen(s)-1] == '\n') { |
537 |
fflush(stderr); |
538 |
midline = 0; |
539 |
} |
540 |
} |
541 |
|
542 |
|
543 |
wputs(s) /* put warning string to stderr */ |
544 |
char *s; |
545 |
{ |
546 |
if (!nowarn) |
547 |
eputs(s); |
548 |
} |
549 |
|
550 |
|
551 |
quit(ec) /* exit program gracefully */ |
552 |
int ec; |
553 |
{ |
554 |
int status = 0; |
555 |
|
556 |
if (hdlist[0] != NULL) { /* close holodeck */ |
557 |
if (nprocs > 0) |
558 |
status = done_rtrace(); /* calls hdsync() */ |
559 |
if (ncprocs > 0 && vdef(REPORT)) { |
560 |
long fsiz, fuse; |
561 |
fsiz = hdfilen(hdlist[0]->fd); |
562 |
fuse = hdfiluse(hdlist[0]->fd, 1); |
563 |
fprintf(stderr, |
564 |
"%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n", |
565 |
hdkfile, fsiz/(1024.*1024.), |
566 |
100.*(fsiz-fuse)/fsiz); |
567 |
} |
568 |
} |
569 |
if (orig_mode >= 0) /* reset holodeck access mode */ |
570 |
fchmod(hdlist[0]->fd, orig_mode); |
571 |
if (outdev != NULL) /* close display */ |
572 |
disp_close(); |
573 |
exit(ec ? ec : status); /* exit */ |
574 |
} |