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 |
HDGRID hdg; |
62 |
int i; |
63 |
/* mark start time */ |
64 |
starttime = time(NULL); |
65 |
initurand(16384); /* initialize urand */ |
66 |
progname = argv[0]; /* get arguments */ |
67 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
68 |
switch (argv[i][1]) { |
69 |
case 'w': /* turn off warnings */ |
70 |
nowarn++; |
71 |
break; |
72 |
case 'f': /* force overwrite */ |
73 |
force++; |
74 |
break; |
75 |
case 'i': /* read input from stdin */ |
76 |
readinp++; |
77 |
break; |
78 |
case 'n': /* compute processes */ |
79 |
if (i >= argc-2) |
80 |
goto userr; |
81 |
ncprocs = atoi(argv[++i]); |
82 |
break; |
83 |
case 'o': /* output display */ |
84 |
if (i >= argc-2) |
85 |
goto userr; |
86 |
outdev = argv[++i]; |
87 |
break; |
88 |
default: |
89 |
goto userr; |
90 |
} |
91 |
/* get root file name */ |
92 |
rootname(froot, hdkfile=argv[i++]); |
93 |
/* load... */ |
94 |
if (i < argc) { /* variables */ |
95 |
loadvars(argv[i++]); |
96 |
/* cmdline settings */ |
97 |
for ( ; i < argc; i++) |
98 |
if (setvariable(argv[i], matchvar) < 0) { |
99 |
sprintf(errmsg, "unknown variable: %s", |
100 |
argv[i]); |
101 |
error(USER, errmsg); |
102 |
} |
103 |
/* check settings */ |
104 |
checkvalues(); |
105 |
/* load RIF if any */ |
106 |
getradfile(); |
107 |
/* set defaults */ |
108 |
setdefaults(&hdg); |
109 |
/* holodeck exists? */ |
110 |
if (!force && access(hdkfile, R_OK|W_OK) == 0) |
111 |
error(USER, |
112 |
"holodeck file exists -- use -f to overwrite"); |
113 |
/* create holodeck */ |
114 |
creatholo(&hdg); |
115 |
} else { /* else load holodeck */ |
116 |
loadholo(); |
117 |
/* check settings */ |
118 |
checkvalues(); |
119 |
/* load RIF if any */ |
120 |
getradfile(); |
121 |
/* set defaults */ |
122 |
setdefaults(NULL); |
123 |
} |
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(30); /* allow 30 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() */ |
191 |
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 = 1; |
268 |
PACKET *pl = NULL, *plend; |
269 |
register PACKET *p; |
270 |
time_t t; |
271 |
long l; |
272 |
|
273 |
if (outdev != NULL) /* check display */ |
274 |
if (!disp_check(idle)) |
275 |
return(0); |
276 |
/* display only? */ |
277 |
if (nprocs <= 0) |
278 |
return(outdev != NULL); |
279 |
/* check file size */ |
280 |
if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) { |
281 |
error(WARNING, "file limit exceeded"); |
282 |
done_rtrace(); |
283 |
idle = 1; |
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 |
idle = 1; |
293 |
return(1); /* comes back */ |
294 |
} |
295 |
if (reporttime > 0 && t >= reporttime) |
296 |
report(t); |
297 |
/* get packets to process */ |
298 |
while (freepacks != NULL) { |
299 |
p = freepacks; freepacks = p->next; p->next = NULL; |
300 |
if (!next_packet(p)) { |
301 |
p->next = freepacks; freepacks = p; |
302 |
idle = 1; |
303 |
break; |
304 |
} |
305 |
if (pl == NULL) pl = p; |
306 |
else plend->next = p; |
307 |
plend = p; |
308 |
} |
309 |
/* process packets */ |
310 |
done_packets(do_packets(pl)); |
311 |
return(1); /* and continue */ |
312 |
} |
313 |
|
314 |
|
315 |
setdefaults(gp) /* set default values */ |
316 |
register HDGRID *gp; |
317 |
{ |
318 |
extern char *atos(); |
319 |
register int i; |
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(SECTION) > 1) { |
328 |
sprintf(errmsg, "ignoring all but first %s", vnam(SECTION)); |
329 |
error(WARNING, errmsg); |
330 |
} |
331 |
if (!vdef(OCTREE)) { |
332 |
if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL) |
333 |
error(SYSTEM, "out of memory"); |
334 |
sprintf(vval(OCTREE), "%s.oct", froot); |
335 |
vdef(OCTREE)++; |
336 |
} |
337 |
if (!vdef(VDIST)) { |
338 |
vval(VDIST) = "F"; |
339 |
vdef(VDIST)++; |
340 |
} |
341 |
if (!vdef(OCCUPANCY)) { |
342 |
vval(OCCUPANCY) = "U"; |
343 |
vdef(OCCUPANCY)++; |
344 |
} |
345 |
/* append rendering options */ |
346 |
if (vdef(RENDER)) |
347 |
rtargc += wordstring(rtargv+rtargc, vval(RENDER)); |
348 |
|
349 |
if (gp == NULL) /* already initialized? */ |
350 |
return; |
351 |
/* set grid parameters */ |
352 |
gp->grid[0] = gp->grid[1] = gp->grid[2] = 0; |
353 |
if (sscanf(vval(SECTION), |
354 |
"%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd", |
355 |
&gp->orig[0], &gp->orig[1], &gp->orig[2], |
356 |
&gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2], |
357 |
&gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2], |
358 |
&gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2], |
359 |
&gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12) |
360 |
badvalue(SECTION); |
361 |
maxlen = 0.; |
362 |
for (i = 0; i < 3; i++) |
363 |
if ((len[i] = VLEN(gp->xv[i])) > maxlen) |
364 |
maxlen = len[i]; |
365 |
if (!vdef(GRID)) { |
366 |
sprintf(buf, "%.4f", maxlen/8.); |
367 |
vval(GRID) = savqstr(buf); |
368 |
vdef(GRID)++; |
369 |
} |
370 |
if ((d = vflt(GRID)) <= FTINY) |
371 |
badvalue(GRID); |
372 |
for (i = 0; i < 3; i++) |
373 |
if (gp->grid[i] <= 0) |
374 |
gp->grid[i] = len[i]/d + (1.-FTINY); |
375 |
} |
376 |
|
377 |
|
378 |
creatholo(gp) /* create a holodeck output file */ |
379 |
HDGRID *gp; |
380 |
{ |
381 |
extern char VersionID[]; |
382 |
long endloc = 0; |
383 |
int fd; |
384 |
FILE *fp; |
385 |
/* open & truncate file */ |
386 |
if ((fp = fopen(hdkfile, "w+")) == NULL) { |
387 |
sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile); |
388 |
error(SYSTEM, errmsg); |
389 |
} |
390 |
/* write information header */ |
391 |
newheader("RADIANCE", fp); |
392 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
393 |
printvars(fp); |
394 |
fputformat(HOLOFMT, fp); |
395 |
fputc('\n', fp); |
396 |
putw(HOLOMAGIC, fp); /* put magic number & terminus */ |
397 |
fwrite(&endloc, sizeof(long), 1, fp); |
398 |
fd = dup(fileno(fp)); |
399 |
fclose(fp); /* flush and close stdio stream */ |
400 |
hdinit(fd, gp); /* allocate and initialize index */ |
401 |
} |
402 |
|
403 |
|
404 |
headline(s) /* process information header line */ |
405 |
char *s; |
406 |
{ |
407 |
extern char FMTSTR[]; |
408 |
register char *cp; |
409 |
char fmt[32]; |
410 |
|
411 |
if (formatval(fmt, s)) { |
412 |
if (strcmp(fmt, HOLOFMT)) { |
413 |
sprintf(errmsg, "%s file \"%s\" has %s%s", |
414 |
HOLOFMT, hdkfile, FMTSTR, fmt); |
415 |
error(USER, errmsg); |
416 |
} |
417 |
return; |
418 |
} |
419 |
for (cp = s; *cp; cp++) /* take off any comments */ |
420 |
if (*cp == '#') { |
421 |
*cp = '\0'; |
422 |
break; |
423 |
} |
424 |
setvariable(s, matchvar); /* don't flag errors */ |
425 |
} |
426 |
|
427 |
|
428 |
loadholo() /* start loading a holodeck from fname */ |
429 |
{ |
430 |
extern long ftell(); |
431 |
FILE *fp; |
432 |
int fd; |
433 |
long fpos; |
434 |
/* open holodeck file */ |
435 |
if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) { |
436 |
sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile, |
437 |
ncprocs>0 ? "appending" : "reading"); |
438 |
error(SYSTEM, errmsg); |
439 |
} |
440 |
/* load variables from header */ |
441 |
getheader(fp, headline, NULL); |
442 |
/* check magic number */ |
443 |
if (getw(fp) != HOLOMAGIC) { |
444 |
sprintf(errmsg, "bad magic number in holodeck file \"%s\"", |
445 |
hdkfile); |
446 |
error(USER, errmsg); |
447 |
} |
448 |
fread(&fpos, sizeof(long), 1, fp); |
449 |
if (fpos != 0) |
450 |
error(WARNING, "ignoring multiple sections in holodeck file"); |
451 |
fpos = ftell(fp); /* get stdio position */ |
452 |
fd = dup(fileno(fp)); |
453 |
fclose(fp); /* done with stdio */ |
454 |
lseek(fd, fpos, 0); /* align system file pointer */ |
455 |
hdinit(fd, NULL); /* allocate and load index */ |
456 |
} |
457 |
|
458 |
|
459 |
done_packets(pl) /* handle finished packets */ |
460 |
PACKET *pl; |
461 |
{ |
462 |
static int n2flush = 0; |
463 |
register PACKET *p; |
464 |
|
465 |
while (pl != NULL) { |
466 |
p = pl; pl = p->next; p->next = NULL; |
467 |
if (p->nr > 0) { /* add to holodeck */ |
468 |
bcopy((char *)p->ra, |
469 |
(char *)hdnewrays(hdlist[p->hd],p->bi,p->nr), |
470 |
p->nr*sizeof(RAYVAL)); |
471 |
if (outdev != NULL) /* display it */ |
472 |
disp_packet((PACKHEAD *)p); |
473 |
if (hdcachesize <= 0) /* manual flushing */ |
474 |
n2flush += p->nr; |
475 |
nraysdone += p->nr; |
476 |
npacksdone++; |
477 |
} |
478 |
p->nr = 0; /* push onto free list */ |
479 |
p->next = freepacks; |
480 |
freepacks = p; |
481 |
} |
482 |
if (n2flush > 512*RPACKSIZ*nprocs) { |
483 |
hdflush(NULL); /* flush holodeck buffers */ |
484 |
n2flush = 0; |
485 |
} |
486 |
} |
487 |
|
488 |
|
489 |
rootname(rn, fn) /* remove tail from end of fn */ |
490 |
register char *rn, *fn; |
491 |
{ |
492 |
char *tp, *dp; |
493 |
|
494 |
for (tp = NULL, dp = rn; *rn = *fn++; rn++) |
495 |
if (*rn == '/') |
496 |
dp = rn; |
497 |
else if (*rn == '.') |
498 |
tp = rn; |
499 |
if (tp != NULL && tp > dp) |
500 |
*tp = '\0'; |
501 |
} |
502 |
|
503 |
|
504 |
badvalue(vc) /* report bad variable value and exit */ |
505 |
int vc; |
506 |
{ |
507 |
sprintf(errmsg, "bad value for variable '%s'", vnam(vc)); |
508 |
error(USER, errmsg); |
509 |
} |
510 |
|
511 |
|
512 |
eputs(s) /* put error message to stderr */ |
513 |
register char *s; |
514 |
{ |
515 |
static int midline = 0; |
516 |
|
517 |
if (!*s) |
518 |
return; |
519 |
if (!midline++) { /* prepend line with program name */ |
520 |
fputs(progname, stderr); |
521 |
fputs(": ", stderr); |
522 |
} |
523 |
fputs(s, stderr); |
524 |
if (s[strlen(s)-1] == '\n') { |
525 |
fflush(stderr); |
526 |
midline = 0; |
527 |
} |
528 |
} |
529 |
|
530 |
|
531 |
wputs(s) /* put warning string to stderr */ |
532 |
char *s; |
533 |
{ |
534 |
if (!nowarn) |
535 |
eputs(s); |
536 |
} |
537 |
|
538 |
|
539 |
quit(ec) /* exit program gracefully */ |
540 |
int ec; |
541 |
{ |
542 |
int status = 0; |
543 |
|
544 |
if (hdlist[0] != NULL) { /* close holodeck */ |
545 |
if (nprocs > 0) |
546 |
status = done_rtrace(); /* calls hdsync() */ |
547 |
if (ncprocs > 0 && vdef(REPORT)) { |
548 |
long fsiz, fuse; |
549 |
fsiz = hdfilen(hdlist[0]->fd); |
550 |
fuse = hdfiluse(hdlist[0]->fd, 1); |
551 |
fprintf(stderr, |
552 |
"%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n", |
553 |
hdkfile, fsiz/(1024.*1024.), |
554 |
100.*(fsiz-fuse)/fsiz); |
555 |
} |
556 |
} |
557 |
if (orig_mode >= 0) /* reset holodeck access mode */ |
558 |
fchmod(hdlist[0]->fd, orig_mode); |
559 |
if (outdev != NULL) /* close display */ |
560 |
disp_close(); |
561 |
exit(ec ? ec : status); /* exit */ |
562 |
} |