1 |
/* Copyright (c) 1998 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 |
#ifndef MAXQTIME |
18 |
#define MAXQTIME 5 /* target maximum seconds in queue */ |
19 |
#endif |
20 |
/* the following must be consistent with rholo.h */ |
21 |
int NVARS = NRHVARS; /* total number of variables */ |
22 |
|
23 |
VARIABLE vv[] = RHVINIT; /* variable-value pairs */ |
24 |
|
25 |
char *progname; /* our program name */ |
26 |
char *hdkfile; /* holodeck file name */ |
27 |
char froot[256]; /* root file name */ |
28 |
|
29 |
int nowarn = 0; /* turn warnings off? */ |
30 |
|
31 |
int ncprocs = 0; /* desired number of compute processes */ |
32 |
|
33 |
char *outdev = NULL; /* output device name */ |
34 |
|
35 |
int readinp = 0; /* read commands from stdin */ |
36 |
|
37 |
int force = 0; /* allow overwrite of holodeck */ |
38 |
|
39 |
time_t starttime; /* time we got started */ |
40 |
time_t endtime; /* time we should end by */ |
41 |
time_t reporttime; /* time for next report */ |
42 |
|
43 |
long maxdisk; /* maximum file space (bytes) */ |
44 |
|
45 |
int rtargc = 1; /* rtrace command */ |
46 |
char *rtargv[128] = {"rtrace", NULL}; |
47 |
|
48 |
int orig_mode = -1; /* original file mode (-1 if unchanged) */ |
49 |
|
50 |
long nraysdone = 0L; /* number of rays done */ |
51 |
long npacksdone = 0L; /* number of packets done */ |
52 |
|
53 |
PACKET *freepacks; /* available packets */ |
54 |
int totqlen; /* maximum queue length when full */ |
55 |
|
56 |
char *sigerr[NSIG]; /* signal error messages */ |
57 |
|
58 |
extern time_t time(); |
59 |
|
60 |
|
61 |
main(argc, argv) |
62 |
int argc; |
63 |
char *argv[]; |
64 |
{ |
65 |
int i; |
66 |
|
67 |
initurand(16384); /* initialize urand */ |
68 |
progname = argv[0]; /* get arguments */ |
69 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
70 |
switch (argv[i][1]) { |
71 |
case 'w': /* turn off warnings */ |
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nowarn++; |
73 |
break; |
74 |
case 'f': /* force overwrite */ |
75 |
force++; |
76 |
break; |
77 |
case 'i': /* read input from stdin */ |
78 |
readinp++; |
79 |
break; |
80 |
case 'n': /* compute processes */ |
81 |
if (i >= argc-2) |
82 |
goto userr; |
83 |
ncprocs = atoi(argv[++i]); |
84 |
break; |
85 |
case 'o': /* output display */ |
86 |
if (i >= argc-2) |
87 |
goto userr; |
88 |
outdev = argv[++i]; |
89 |
break; |
90 |
default: |
91 |
goto userr; |
92 |
} |
93 |
/* get root file name */ |
94 |
if (i >= argc) |
95 |
goto userr; |
96 |
rootname(froot, hdkfile=argv[i++]); |
97 |
/* load variables? */ |
98 |
if (i < argc) |
99 |
if (argv[i][0] != '-' && argv[i][0] != '+') |
100 |
loadvars(argv[i]); /* load variables from file */ |
101 |
|
102 |
if (i >= argc || argv[i][0] == '+') |
103 |
loadholo(); /* load existing holodeck */ |
104 |
|
105 |
while (++i < argc) /* get command line settings */ |
106 |
if (setvariable(argv[i], matchvar) < 0) { |
107 |
sprintf(errmsg, "unknown variable: %s", argv[i]); |
108 |
error(USER, errmsg); |
109 |
} |
110 |
/* check settings */ |
111 |
checkvalues(); |
112 |
/* load rad input file */ |
113 |
getradfile(); |
114 |
|
115 |
if (hdlist[0] == NULL) { /* create new holodeck */ |
116 |
HDGRID hdg[HDMAX]; |
117 |
/* set defaults */ |
118 |
setdefaults(hdg); |
119 |
/* holodeck exists? */ |
120 |
if (!force && access(hdkfile, R_OK|W_OK) == 0) |
121 |
error(USER, |
122 |
"holodeck file exists -- use -f to overwrite"); |
123 |
/* create holodeck */ |
124 |
creatholo(hdg); |
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} else /* else just set defaults */ |
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setdefaults(NULL); |
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/* initialize */ |
128 |
initrholo(); |
129 |
/* main loop */ |
130 |
while (rholo()) |
131 |
; |
132 |
/* done */ |
133 |
quit(0); |
134 |
userr: |
135 |
fprintf(stderr, |
136 |
"Usage: %s [-n nprocs][-o disp][-w][-f] output.hdk [control.hif|+|- [VAR=val ..]]\n", |
137 |
progname); |
138 |
quit(1); |
139 |
} |
140 |
|
141 |
|
142 |
onsig(signo) /* fatal signal */ |
143 |
int signo; |
144 |
{ |
145 |
static int gotsig = 0; |
146 |
|
147 |
if (gotsig++) /* two signals and we're gone! */ |
148 |
_exit(signo); |
149 |
|
150 |
alarm(60); /* allow 60 seconds to clean up */ |
151 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
152 |
eputs("signal - "); |
153 |
eputs(sigerr[signo]); |
154 |
eputs("\n"); |
155 |
quit(3); |
156 |
} |
157 |
|
158 |
|
159 |
sigdie(signo, msg) /* set fatal signal */ |
160 |
int signo; |
161 |
char *msg; |
162 |
{ |
163 |
if (signal(signo, onsig) == SIG_IGN) |
164 |
signal(signo, SIG_IGN); |
165 |
sigerr[signo] = msg; |
166 |
} |
167 |
|
168 |
|
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int |
170 |
resfmode(fd, mod) /* restrict open file access mode */ |
171 |
int fd, mod; |
172 |
{ |
173 |
struct stat stbuf; |
174 |
/* get original mode */ |
175 |
if (fstat(fd, &stbuf) < 0) |
176 |
error(SYSTEM, "cannot stat open holodeck file"); |
177 |
mod &= stbuf.st_mode; /* always more restrictive */ |
178 |
if (mod == (stbuf.st_mode & 0777)) |
179 |
return(-1); /* already set */ |
180 |
/* else change it */ |
181 |
if (fchmod(fd, mod) < 0) { |
182 |
error(WARNING, "cannot change holodeck file access mode"); |
183 |
return(-1); |
184 |
} |
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return(stbuf.st_mode); /* return original mode */ |
186 |
} |
187 |
|
188 |
|
189 |
initrholo() /* get our holodeck running */ |
190 |
{ |
191 |
extern int global_packet(); |
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register int i; |
193 |
/* close holodeck on exec() */ |
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fcntl(hdlist[0]->fd, F_SETFD, FD_CLOEXEC); |
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|
196 |
if (outdev != NULL) /* open output device */ |
197 |
disp_open(outdev); |
198 |
else if (ncprocs > 0) /* else use global ray feed */ |
199 |
init_global(); |
200 |
/* record disk space limit */ |
201 |
if (!vdef(DISKSPACE)) |
202 |
maxdisk = 0; |
203 |
else |
204 |
maxdisk = 1024.*1024.*vflt(DISKSPACE); |
205 |
/* set up memory cache */ |
206 |
if (outdev == NULL) |
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hdcachesize = 0; /* manual flushing */ |
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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) |
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quit(2); |
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} |
216 |
/* mark the starting time */ |
217 |
starttime = time(NULL); |
218 |
/* compute end time */ |
219 |
if (!vdef(TIME) || vflt(TIME) <= FTINY) |
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endtime = 0; |
221 |
else |
222 |
endtime = starttime + vflt(TIME)*3600. + .5; |
223 |
/* start rtrace */ |
224 |
if (ncprocs > 0) { |
225 |
totqlen = i = start_rtrace(); |
226 |
if (i < 1) |
227 |
error(USER, "cannot start rtrace process(es)"); |
228 |
if (vdef(REPORT)) { /* make first report */ |
229 |
printargs(rtargc, rtargv, stderr); |
230 |
report(0); |
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} |
232 |
/* allocate packets */ |
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freepacks = (PACKET *)bmalloc(i*sizeof(PACKET)); |
234 |
if (freepacks == NULL) |
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goto memerr; |
236 |
freepacks[--i].nr = 0; |
237 |
freepacks[i].next = NULL; |
238 |
if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) { |
239 |
freepacks[i].offset = (float *)bmalloc( |
240 |
RPACKSIZ*sizeof(float)*(i+1) ); |
241 |
if (freepacks[i].offset == NULL) |
242 |
goto memerr; |
243 |
} else |
244 |
freepacks[i].offset = NULL; |
245 |
while (i--) { |
246 |
freepacks[i].nr = 0; |
247 |
freepacks[i].offset = freepacks[i+1].offset == NULL ? |
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NULL : freepacks[i+1].offset+RPACKSIZ ; |
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freepacks[i].next = &freepacks[i+1]; |
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} |
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} |
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/* set up signal handling */ |
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sigdie(SIGINT, "Interrupt"); |
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sigdie(SIGHUP, "Hangup"); |
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sigdie(SIGTERM, "Terminate"); |
256 |
sigdie(SIGPIPE, "Broken pipe"); |
257 |
sigdie(SIGALRM, "Alarm clock"); |
258 |
#ifdef SIGXCPU |
259 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
260 |
sigdie(SIGXFSZ, "File size exceeded"); |
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#endif |
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/* protect holodeck file */ |
263 |
orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444); |
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return; |
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memerr: |
266 |
error(SYSTEM, "out of memory in initrholo"); |
267 |
} |
268 |
|
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|
270 |
rholo() /* holodeck main loop */ |
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{ |
272 |
static int idle = 0; |
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PACKET *pl = NULL, *plend; |
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int pksiz; |
275 |
register PACKET *p; |
276 |
time_t t; |
277 |
/* check display */ |
278 |
if (nprocs <= 0) |
279 |
idle = 1; |
280 |
if (outdev != NULL) { |
281 |
if (!disp_check(idle)) |
282 |
return(0); /* quit request */ |
283 |
if (nprocs <= 0) |
284 |
return(1); |
285 |
} else if (idle) |
286 |
return(0); /* all done */ |
287 |
/* check file size */ |
288 |
if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) { |
289 |
error(WARNING, "file limit exceeded"); |
290 |
done_rtrace(); |
291 |
return(1); /* comes back */ |
292 |
} |
293 |
t = time(NULL); /* check time */ |
294 |
if (endtime > 0 && t >= endtime) { |
295 |
error(WARNING, "time limit exceeded"); |
296 |
done_rtrace(); |
297 |
return(1); /* comes back */ |
298 |
} |
299 |
if (reporttime > 0 && t >= reporttime) |
300 |
report(t); |
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/* figure out good packet size */ |
302 |
#if MAXQTIME |
303 |
pksiz = nraysdone*MAXQTIME/(totqlen*(t - starttime + 1L)); |
304 |
if (pksiz < 1) |
305 |
pksiz = 1; |
306 |
else if (pksiz > RPACKSIZ) |
307 |
#endif |
308 |
pksiz = RPACKSIZ; |
309 |
idle = 0; /* get packets to process */ |
310 |
while (freepacks != NULL) { |
311 |
p = freepacks; freepacks = p->next; p->next = NULL; |
312 |
if (!next_packet(p, pksiz)) { |
313 |
p->next = freepacks; freepacks = p; |
314 |
idle = 1; |
315 |
break; |
316 |
} |
317 |
if (pl == NULL) pl = p; |
318 |
else plend->next = p; |
319 |
plend = p; |
320 |
} |
321 |
/* process packets */ |
322 |
done_packets(do_packets(pl)); |
323 |
return(1); /* and continue */ |
324 |
} |
325 |
|
326 |
|
327 |
setdefaults(gp) /* set default values */ |
328 |
register HDGRID *gp; |
329 |
{ |
330 |
extern char *atos(); |
331 |
register int i; |
332 |
int n; |
333 |
double len[3], d; |
334 |
char buf[64]; |
335 |
|
336 |
if (!vdef(SECTION)) { |
337 |
sprintf(errmsg, "%s must be defined", vnam(SECTION)); |
338 |
error(USER, errmsg); |
339 |
} |
340 |
if (!vdef(OCTREE)) { |
341 |
if ((vval(OCTREE) = bmalloc(strlen(froot)+5)) == NULL) |
342 |
error(SYSTEM, "out of memory"); |
343 |
sprintf(vval(OCTREE), "%s.oct", froot); |
344 |
vdef(OCTREE)++; |
345 |
} |
346 |
if (!vdef(VDIST)) { |
347 |
vval(VDIST) = "F"; |
348 |
vdef(VDIST)++; |
349 |
} |
350 |
/* append rendering options */ |
351 |
if (vdef(RENDER)) |
352 |
rtargc += wordstring(rtargv+rtargc, vval(RENDER)); |
353 |
|
354 |
if (gp == NULL) /* already initialized? */ |
355 |
return; |
356 |
/* set grid parameters */ |
357 |
for (n = 0; n < vdef(SECTION); n++, gp++) { |
358 |
gp->grid[0] = gp->grid[1] = gp->grid[2] = 0; |
359 |
if (sscanf(nvalue(SECTION, n), |
360 |
"%lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %lf %hd %hd %hd", |
361 |
&gp->orig[0], &gp->orig[1], &gp->orig[2], |
362 |
&gp->xv[0][0], &gp->xv[0][1], &gp->xv[0][2], |
363 |
&gp->xv[1][0], &gp->xv[1][1], &gp->xv[1][2], |
364 |
&gp->xv[2][0], &gp->xv[2][1], &gp->xv[2][2], |
365 |
&gp->grid[0], &gp->grid[1], &gp->grid[2]) < 12) |
366 |
badvalue(SECTION); |
367 |
for (i = 0; i < 3; i++) |
368 |
len[i] = VLEN(gp->xv[i]); |
369 |
if (!vdef(GRID)) { |
370 |
d = 2/5e5*( len[0]*len[0]*(len[1]*len[1] + |
371 |
len[2]*len[2] + 4*len[1]*len[2]) |
372 |
+ len[1]*len[1]*len[2]*(len[2] + 4*len[0]) |
373 |
+ 4*len[0]*len[1]*len[2]*len[2] ); |
374 |
d = sqrt(sqrt(d)); |
375 |
} else if ((d = vflt(GRID)) <= FTINY) |
376 |
badvalue(GRID); |
377 |
for (i = 0; i < 3; i++) |
378 |
if (gp->grid[i] <= 0) |
379 |
gp->grid[i] = len[i]/d + (1.-FTINY); |
380 |
} |
381 |
} |
382 |
|
383 |
|
384 |
creatholo(gp) /* create a holodeck output file */ |
385 |
HDGRID *gp; |
386 |
{ |
387 |
extern char VersionID[]; |
388 |
int4 lastloc, nextloc; |
389 |
int n; |
390 |
int fd; |
391 |
FILE *fp; |
392 |
/* open & truncate file */ |
393 |
if ((fp = fopen(hdkfile, "w+")) == NULL) { |
394 |
sprintf(errmsg, "cannot open \"%s\" for writing", hdkfile); |
395 |
error(SYSTEM, errmsg); |
396 |
} |
397 |
/* write information header */ |
398 |
newheader("RADIANCE", fp); |
399 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
400 |
printvars(fp); |
401 |
fputformat(HOLOFMT, fp); |
402 |
fputc('\n', fp); |
403 |
putw(HOLOMAGIC, fp); /* put magic number */ |
404 |
fd = dup(fileno(fp)); |
405 |
fclose(fp); /* flush and close stdio stream */ |
406 |
lastloc = lseek(fd, 0L, 2); |
407 |
for (n = vdef(SECTION); n--; gp++) { /* initialize each section */ |
408 |
nextloc = 0L; |
409 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
410 |
hdinit(fd, gp); /* writes beam index */ |
411 |
if (!n) |
412 |
break; |
413 |
nextloc = hdfilen(fd); /* write section pointer */ |
414 |
if (lseek(fd, (long)lastloc, 0) < 0) |
415 |
error(SYSTEM, |
416 |
"cannot seek on holodeck file in creatholo"); |
417 |
write(fd, (char *)&nextloc, sizeof(nextloc)); |
418 |
lseek(fd, (long)(lastloc=nextloc), 0); |
419 |
} |
420 |
} |
421 |
|
422 |
|
423 |
headline(s) /* process information header line */ |
424 |
char *s; |
425 |
{ |
426 |
extern char FMTSTR[]; |
427 |
register char *cp; |
428 |
char fmt[32]; |
429 |
|
430 |
if (formatval(fmt, s)) { |
431 |
if (strcmp(fmt, HOLOFMT)) { |
432 |
sprintf(errmsg, "%s file \"%s\" has %s%s", |
433 |
HOLOFMT, hdkfile, FMTSTR, fmt); |
434 |
error(USER, errmsg); |
435 |
} |
436 |
return; |
437 |
} |
438 |
for (cp = s; *cp; cp++) /* take off any comments */ |
439 |
if (*cp == '#') { |
440 |
*cp = '\0'; |
441 |
break; |
442 |
} |
443 |
setvariable(s, matchvar); /* don't flag errors */ |
444 |
} |
445 |
|
446 |
|
447 |
loadholo() /* start loading a holodeck from fname */ |
448 |
{ |
449 |
extern long ftell(); |
450 |
FILE *fp; |
451 |
int fd; |
452 |
int n; |
453 |
int4 nextloc; |
454 |
/* open holodeck file */ |
455 |
if ((fp = fopen(hdkfile, ncprocs>0 ? "r+" : "r")) == NULL) { |
456 |
sprintf(errmsg, "cannot open \"%s\" for %s", hdkfile, |
457 |
ncprocs>0 ? "appending" : "reading"); |
458 |
error(SYSTEM, errmsg); |
459 |
} |
460 |
/* load variables from header */ |
461 |
getheader(fp, headline, NULL); |
462 |
/* check magic number */ |
463 |
if (getw(fp) != HOLOMAGIC) { |
464 |
sprintf(errmsg, "bad magic number in holodeck file \"%s\"", |
465 |
hdkfile); |
466 |
error(USER, errmsg); |
467 |
} |
468 |
nextloc = ftell(fp); /* get stdio position */ |
469 |
fd = dup(fileno(fp)); |
470 |
fclose(fp); /* done with stdio */ |
471 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
472 |
lseek(fd, (long)nextloc, 0); |
473 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
474 |
hdinit(fd, NULL); |
475 |
} |
476 |
if (n != vdef(SECTION)) { |
477 |
sprintf(errmsg, "number of sections does not match %s setting", |
478 |
vnam(SECTION)); |
479 |
error(WARNING, errmsg); |
480 |
} |
481 |
} |
482 |
|
483 |
|
484 |
done_packets(pl) /* handle finished packets */ |
485 |
PACKET *pl; |
486 |
{ |
487 |
static int n2flush = 0; |
488 |
register PACKET *p; |
489 |
|
490 |
while (pl != NULL) { |
491 |
p = pl; pl = p->next; p->next = NULL; |
492 |
if (p->nr > 0) { /* add to holodeck */ |
493 |
bcopy((char *)p->ra, |
494 |
(char *)hdnewrays(hdlist[p->hd],p->bi,p->nr), |
495 |
p->nr*sizeof(RAYVAL)); |
496 |
if (outdev != NULL) /* display it */ |
497 |
disp_packet((PACKHEAD *)p); |
498 |
if (hdcachesize <= 0) /* manual flushing */ |
499 |
n2flush++; |
500 |
nraysdone += p->nr; |
501 |
npacksdone++; |
502 |
p->nr = 0; |
503 |
} |
504 |
p->next = freepacks; /* push onto free list */ |
505 |
freepacks = p; |
506 |
} |
507 |
if (n2flush > 300/MAXQTIME*totqlen) { |
508 |
hdflush(NULL); /* flush holodeck buffers */ |
509 |
n2flush = 0; |
510 |
} |
511 |
} |
512 |
|
513 |
|
514 |
rootname(rn, fn) /* remove tail from end of fn */ |
515 |
register char *rn, *fn; |
516 |
{ |
517 |
char *tp, *dp; |
518 |
|
519 |
for (tp = NULL, dp = rn; *rn = *fn++; rn++) |
520 |
if (*rn == '/') |
521 |
dp = rn; |
522 |
else if (*rn == '.') |
523 |
tp = rn; |
524 |
if (tp != NULL && tp > dp) |
525 |
*tp = '\0'; |
526 |
} |
527 |
|
528 |
|
529 |
badvalue(vc) /* report bad variable value and exit */ |
530 |
int vc; |
531 |
{ |
532 |
sprintf(errmsg, "bad value for variable '%s'", vnam(vc)); |
533 |
error(USER, errmsg); |
534 |
} |
535 |
|
536 |
|
537 |
eputs(s) /* put error message to stderr */ |
538 |
register char *s; |
539 |
{ |
540 |
static int midline = 0; |
541 |
|
542 |
if (!*s) |
543 |
return; |
544 |
if (!midline++) { /* prepend line with program name */ |
545 |
fputs(progname, stderr); |
546 |
fputs(": ", stderr); |
547 |
} |
548 |
fputs(s, stderr); |
549 |
if (s[strlen(s)-1] == '\n') { |
550 |
fflush(stderr); |
551 |
midline = 0; |
552 |
} |
553 |
} |
554 |
|
555 |
|
556 |
wputs(s) /* put warning string to stderr */ |
557 |
char *s; |
558 |
{ |
559 |
if (!nowarn) |
560 |
eputs(s); |
561 |
} |
562 |
|
563 |
|
564 |
quit(ec) /* exit program gracefully */ |
565 |
int ec; |
566 |
{ |
567 |
int status = 0; |
568 |
|
569 |
if (hdlist[0] != NULL) { /* close holodeck */ |
570 |
if (nprocs > 0) |
571 |
status = done_rtrace(); /* calls hdsync() */ |
572 |
if (ncprocs > 0 && vdef(REPORT)) { |
573 |
long fsiz, fuse; |
574 |
fsiz = hdfilen(hdlist[0]->fd); |
575 |
fuse = hdfiluse(hdlist[0]->fd, 1); |
576 |
fprintf(stderr, |
577 |
"%s: %.1f Mbyte holodeck file, %.1f%% fragmentation\n", |
578 |
hdkfile, fsiz/(1024.*1024.), |
579 |
100.*(fsiz-fuse)/fsiz); |
580 |
} |
581 |
} |
582 |
if (orig_mode >= 0) /* reset holodeck access mode */ |
583 |
fchmod(hdlist[0]->fd, orig_mode); |
584 |
if (outdev != NULL) /* close display */ |
585 |
disp_close(); |
586 |
exit(ec ? ec : status); /* exit */ |
587 |
} |