1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rtmain.c,v 2.17 2009/06/22 20:52:56 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* rtmain.c - main for rtrace per-ray calculation program |
6 |
*/ |
7 |
|
8 |
#include "copyright.h" |
9 |
|
10 |
#include <signal.h> |
11 |
|
12 |
#include "platform.h" |
13 |
#include "rtprocess.h" /* getpid() */ |
14 |
#include "resolu.h" |
15 |
#include "ray.h" |
16 |
#include "source.h" |
17 |
#include "ambient.h" |
18 |
#include "random.h" |
19 |
#include "paths.h" |
20 |
|
21 |
extern char *progname; /* global argv[0] */ |
22 |
|
23 |
extern char *shm_boundary; /* boundary of shared memory */ |
24 |
|
25 |
/* persistent processes define */ |
26 |
#ifdef F_SETLKW |
27 |
#define PERSIST 1 /* normal persist */ |
28 |
#define PARALLEL 2 /* parallel persist */ |
29 |
#define PCHILD 3 /* child of normal persist */ |
30 |
#endif |
31 |
|
32 |
char *sigerr[NSIG]; /* signal error messages */ |
33 |
char *errfile = NULL; /* error output file */ |
34 |
|
35 |
int nproc = 1; /* number of processes */ |
36 |
|
37 |
extern char *formstr(); /* string from format */ |
38 |
int inform = 'a'; /* input format */ |
39 |
int outform = 'a'; /* output format */ |
40 |
char *outvals = "v"; /* output specification */ |
41 |
|
42 |
int hresolu = 0; /* horizontal (scan) size */ |
43 |
int vresolu = 0; /* vertical resolution */ |
44 |
|
45 |
int imm_irrad = 0; /* compute immediate irradiance? */ |
46 |
int lim_dist = 0; /* limit distance? */ |
47 |
|
48 |
#ifndef MAXMODLIST |
49 |
#define MAXMODLIST 1024 /* maximum modifiers we'll track */ |
50 |
#endif |
51 |
|
52 |
extern void (*addobjnotify[])(); /* object notification calls */ |
53 |
extern void tranotify(OBJECT obj); |
54 |
|
55 |
char *tralist[MAXMODLIST]; /* list of modifers to trace (or no) */ |
56 |
int traincl = -1; /* include == 1, exclude == 0 */ |
57 |
|
58 |
static int loadflags = ~IO_FILES; /* what to load from octree */ |
59 |
|
60 |
static void onsig(int signo); |
61 |
static void sigdie(int signo, char *msg); |
62 |
static void printdefaults(void); |
63 |
|
64 |
|
65 |
int |
66 |
main(int argc, char *argv[]) |
67 |
{ |
68 |
#define check(ol,al) if (argv[i][ol] || \ |
69 |
badarg(argc-i-1,argv+i+1,al)) \ |
70 |
goto badopt |
71 |
#define bool(olen,var) switch (argv[i][olen]) { \ |
72 |
case '\0': var = !var; break; \ |
73 |
case 'y': case 'Y': case 't': case 'T': \ |
74 |
case '+': case '1': var = 1; break; \ |
75 |
case 'n': case 'N': case 'f': case 'F': \ |
76 |
case '-': case '0': var = 0; break; \ |
77 |
default: goto badopt; } |
78 |
int persist = 0; |
79 |
char *octnm = NULL; |
80 |
char **tralp; |
81 |
int duped1; |
82 |
int rval; |
83 |
int i; |
84 |
/* global program name */ |
85 |
progname = argv[0] = fixargv0(argv[0]); |
86 |
/* add trace notify function */ |
87 |
for (i = 0; addobjnotify[i] != NULL; i++) |
88 |
; |
89 |
addobjnotify[i] = tranotify; |
90 |
/* set our defaults */ |
91 |
maxdepth = -10; |
92 |
minweight = 2e-3; |
93 |
/* option city */ |
94 |
for (i = 1; i < argc; i++) { |
95 |
/* expand arguments */ |
96 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
97 |
; |
98 |
if (rval < 0) { |
99 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
100 |
error(SYSTEM, errmsg); |
101 |
} |
102 |
if (argv[i] == NULL || argv[i][0] != '-') |
103 |
break; /* break from options */ |
104 |
if (!strcmp(argv[i], "-version")) { |
105 |
puts(VersionID); |
106 |
quit(0); |
107 |
} |
108 |
if (!strcmp(argv[i], "-defaults") || |
109 |
!strcmp(argv[i], "-help")) { |
110 |
printdefaults(); |
111 |
quit(0); |
112 |
} |
113 |
rval = getrenderopt(argc-i, argv+i); |
114 |
if (rval >= 0) { |
115 |
i += rval; |
116 |
continue; |
117 |
} |
118 |
switch (argv[i][1]) { |
119 |
case 'n': /* number of cores */ |
120 |
check(2,"i"); |
121 |
nproc = atoi(argv[++i]); |
122 |
if (nproc <= 0) |
123 |
error(USER, "bad number of processes"); |
124 |
break; |
125 |
case 'x': /* x resolution */ |
126 |
check(2,"i"); |
127 |
hresolu = atoi(argv[++i]); |
128 |
break; |
129 |
case 'y': /* y resolution */ |
130 |
check(2,"i"); |
131 |
vresolu = atoi(argv[++i]); |
132 |
break; |
133 |
case 'w': /* warnings */ |
134 |
rval = erract[WARNING].pf != NULL; |
135 |
bool(2,rval); |
136 |
if (rval) erract[WARNING].pf = wputs; |
137 |
else erract[WARNING].pf = NULL; |
138 |
break; |
139 |
case 'e': /* error file */ |
140 |
check(2,"s"); |
141 |
errfile = argv[++i]; |
142 |
break; |
143 |
case 'l': /* limit distance */ |
144 |
if (argv[i][2] != 'd') |
145 |
goto badopt; |
146 |
bool(3,lim_dist); |
147 |
break; |
148 |
case 'I': /* immed. irradiance */ |
149 |
bool(2,imm_irrad); |
150 |
break; |
151 |
case 'f': /* format i/o */ |
152 |
switch (argv[i][2]) { |
153 |
case 'a': /* ascii */ |
154 |
case 'f': /* float */ |
155 |
case 'd': /* double */ |
156 |
inform = argv[i][2]; |
157 |
break; |
158 |
default: |
159 |
goto badopt; |
160 |
} |
161 |
switch (argv[i][3]) { |
162 |
case '\0': |
163 |
outform = inform; |
164 |
break; |
165 |
case 'a': /* ascii */ |
166 |
case 'f': /* float */ |
167 |
case 'd': /* double */ |
168 |
case 'c': /* color */ |
169 |
check(4,""); |
170 |
outform = argv[i][3]; |
171 |
break; |
172 |
default: |
173 |
goto badopt; |
174 |
} |
175 |
break; |
176 |
case 'o': /* output */ |
177 |
outvals = argv[i]+2; |
178 |
break; |
179 |
case 'h': /* header output */ |
180 |
rval = loadflags & IO_INFO; |
181 |
bool(2,rval); |
182 |
loadflags = rval ? loadflags | IO_INFO : |
183 |
loadflags & ~IO_INFO; |
184 |
break; |
185 |
case 't': /* trace */ |
186 |
switch (argv[i][2]) { |
187 |
case 'i': /* include */ |
188 |
case 'I': |
189 |
check(3,"s"); |
190 |
if (traincl != 1) { |
191 |
traincl = 1; |
192 |
tralp = tralist; |
193 |
} |
194 |
if (argv[i][2] == 'I') { /* file */ |
195 |
rval = wordfile(tralp, |
196 |
getpath(argv[++i],getrlibpath(),R_OK)); |
197 |
if (rval < 0) { |
198 |
sprintf(errmsg, |
199 |
"cannot open trace include file \"%s\"", |
200 |
argv[i]); |
201 |
error(SYSTEM, errmsg); |
202 |
} |
203 |
tralp += rval; |
204 |
} else { |
205 |
*tralp++ = argv[++i]; |
206 |
*tralp = NULL; |
207 |
} |
208 |
break; |
209 |
case 'e': /* exclude */ |
210 |
case 'E': |
211 |
check(3,"s"); |
212 |
if (traincl != 0) { |
213 |
traincl = 0; |
214 |
tralp = tralist; |
215 |
} |
216 |
if (argv[i][2] == 'E') { /* file */ |
217 |
rval = wordfile(tralp, |
218 |
getpath(argv[++i],getrlibpath(),R_OK)); |
219 |
if (rval < 0) { |
220 |
sprintf(errmsg, |
221 |
"cannot open trace exclude file \"%s\"", |
222 |
argv[i]); |
223 |
error(SYSTEM, errmsg); |
224 |
} |
225 |
tralp += rval; |
226 |
} else { |
227 |
*tralp++ = argv[++i]; |
228 |
*tralp = NULL; |
229 |
} |
230 |
break; |
231 |
default: |
232 |
goto badopt; |
233 |
} |
234 |
break; |
235 |
#ifdef PERSIST |
236 |
case 'P': /* persist file */ |
237 |
if (argv[i][2] == 'P') { |
238 |
check(3,"s"); |
239 |
persist = PARALLEL; |
240 |
} else { |
241 |
check(2,"s"); |
242 |
persist = PERSIST; |
243 |
} |
244 |
persistfile(argv[++i]); |
245 |
break; |
246 |
#endif |
247 |
default: |
248 |
goto badopt; |
249 |
} |
250 |
} |
251 |
if (nproc > 1) { |
252 |
if (persist) |
253 |
error(USER, "multiprocessing incompatible with persist file"); |
254 |
if (imm_irrad) |
255 |
error(USER, "multiprocessing incompatible with immediate irradiance"); |
256 |
if (hresolu > 0 && hresolu < nproc) |
257 |
error(WARNING, "number of cores should not exceed horizontal resolution"); |
258 |
if (trace != NULL) |
259 |
error(WARNING, "multiprocessing does not work properly with trace mode"); |
260 |
} |
261 |
/* initialize object types */ |
262 |
initotypes(); |
263 |
/* initialize urand */ |
264 |
if (rand_samp) { |
265 |
srandom((long)time(0)); |
266 |
initurand(0); |
267 |
} else { |
268 |
srandom(0L); |
269 |
initurand(2048); |
270 |
} |
271 |
/* set up signal handling */ |
272 |
sigdie(SIGINT, "Interrupt"); |
273 |
#ifdef SIGHUP |
274 |
sigdie(SIGHUP, "Hangup"); |
275 |
#endif |
276 |
sigdie(SIGTERM, "Terminate"); |
277 |
#ifdef SIGPIPE |
278 |
sigdie(SIGPIPE, "Broken pipe"); |
279 |
#endif |
280 |
#ifdef SIGALRM |
281 |
sigdie(SIGALRM, "Alarm clock"); |
282 |
#endif |
283 |
#ifdef SIGXCPU |
284 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
285 |
sigdie(SIGXFSZ, "File size exceeded"); |
286 |
#endif |
287 |
/* open error file */ |
288 |
if (errfile != NULL) { |
289 |
if (freopen(errfile, "a", stderr) == NULL) |
290 |
quit(2); |
291 |
fprintf(stderr, "**************\n*** PID %5d: ", |
292 |
getpid()); |
293 |
printargs(argc, argv, stderr); |
294 |
putc('\n', stderr); |
295 |
fflush(stderr); |
296 |
} |
297 |
#ifdef NICE |
298 |
nice(NICE); /* lower priority */ |
299 |
#endif |
300 |
/* get octree */ |
301 |
if (i == argc) |
302 |
octnm = NULL; |
303 |
else if (i == argc-1) |
304 |
octnm = argv[i]; |
305 |
else |
306 |
goto badopt; |
307 |
if (octnm == NULL) |
308 |
error(USER, "missing octree argument"); |
309 |
/* set up output */ |
310 |
#ifdef PERSIST |
311 |
if (persist) { |
312 |
duped1 = dup(fileno(stdout)); /* don't lose our output */ |
313 |
openheader(); |
314 |
} |
315 |
#endif |
316 |
if (outform != 'a') |
317 |
SET_FILE_BINARY(stdout); |
318 |
readoct(octnm, loadflags, &thescene, NULL); |
319 |
nsceneobjs = nobjects; |
320 |
|
321 |
if (loadflags & IO_INFO) { /* print header */ |
322 |
printargs(i, argv, stdout); |
323 |
printf("SOFTWARE= %s\n", VersionID); |
324 |
fputnow(stdout); |
325 |
fputformat(formstr(outform), stdout); |
326 |
putchar('\n'); |
327 |
} |
328 |
|
329 |
marksources(); /* find and mark sources */ |
330 |
|
331 |
setambient(); /* initialize ambient calculation */ |
332 |
|
333 |
#ifdef PERSIST |
334 |
if (persist) { |
335 |
fflush(stdout); |
336 |
/* reconnect stdout */ |
337 |
dup2(duped1, fileno(stdout)); |
338 |
close(duped1); |
339 |
if (persist == PARALLEL) { /* multiprocessing */ |
340 |
preload_objs(); /* preload scene */ |
341 |
shm_boundary = (char *)malloc(16); |
342 |
strcpy(shm_boundary, "SHM_BOUNDARY"); |
343 |
while ((rval=fork()) == 0) { /* keep on forkin' */ |
344 |
pflock(1); |
345 |
pfhold(); |
346 |
ambsync(); /* load new values */ |
347 |
} |
348 |
if (rval < 0) |
349 |
error(SYSTEM, "cannot fork child for persist function"); |
350 |
pfdetach(); /* parent will run then exit */ |
351 |
} |
352 |
} |
353 |
runagain: |
354 |
if (persist) |
355 |
dupheader(); /* send header to stdout */ |
356 |
#endif |
357 |
if (nproc > 1) /* start multiprocessing */ |
358 |
ray_popen(nproc); |
359 |
/* trace rays */ |
360 |
rtrace(NULL); |
361 |
/* flush ambient file */ |
362 |
ambsync(); |
363 |
#ifdef PERSIST |
364 |
if (persist == PERSIST) { /* first run-through */ |
365 |
if ((rval=fork()) == 0) { /* child loops until killed */ |
366 |
pflock(1); |
367 |
persist = PCHILD; |
368 |
} else { /* original process exits */ |
369 |
if (rval < 0) |
370 |
error(SYSTEM, "cannot fork child for persist function"); |
371 |
pfdetach(); /* parent exits */ |
372 |
} |
373 |
} |
374 |
if (persist == PCHILD) { /* wait for a signal then go again */ |
375 |
pfhold(); |
376 |
raynum = nrays = 0; /* reinitialize */ |
377 |
goto runagain; |
378 |
} |
379 |
#endif |
380 |
quit(0); |
381 |
|
382 |
badopt: |
383 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
384 |
error(USER, errmsg); |
385 |
return 1; /* pro forma return */ |
386 |
|
387 |
#undef check |
388 |
#undef bool |
389 |
} |
390 |
|
391 |
|
392 |
void |
393 |
wputs( /* warning output function */ |
394 |
char *s |
395 |
) |
396 |
{ |
397 |
int lasterrno = errno; |
398 |
eputs(s); |
399 |
errno = lasterrno; |
400 |
} |
401 |
|
402 |
|
403 |
void |
404 |
eputs( /* put string to stderr */ |
405 |
register char *s |
406 |
) |
407 |
{ |
408 |
static int midline = 0; |
409 |
|
410 |
if (!*s) |
411 |
return; |
412 |
if (!midline++) { |
413 |
fputs(progname, stderr); |
414 |
fputs(": ", stderr); |
415 |
} |
416 |
fputs(s, stderr); |
417 |
if (s[strlen(s)-1] == '\n') { |
418 |
fflush(stderr); |
419 |
midline = 0; |
420 |
} |
421 |
} |
422 |
|
423 |
|
424 |
static void |
425 |
onsig( /* fatal signal */ |
426 |
int signo |
427 |
) |
428 |
{ |
429 |
static int gotsig = 0; |
430 |
|
431 |
if (gotsig++) /* two signals and we're gone! */ |
432 |
_exit(signo); |
433 |
|
434 |
#ifdef SIGALRM |
435 |
alarm(15); /* allow 15 seconds to clean up */ |
436 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
437 |
#endif |
438 |
eputs("signal - "); |
439 |
eputs(sigerr[signo]); |
440 |
eputs("\n"); |
441 |
quit(3); |
442 |
} |
443 |
|
444 |
|
445 |
static void |
446 |
sigdie( /* set fatal signal */ |
447 |
int signo, |
448 |
char *msg |
449 |
) |
450 |
{ |
451 |
if (signal(signo, onsig) == SIG_IGN) |
452 |
signal(signo, SIG_IGN); |
453 |
sigerr[signo] = msg; |
454 |
} |
455 |
|
456 |
|
457 |
static void |
458 |
printdefaults(void) /* print default values to stdout */ |
459 |
{ |
460 |
register char *cp; |
461 |
|
462 |
if (imm_irrad) |
463 |
printf("-I+\t\t\t\t# immediate irradiance on\n"); |
464 |
printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
465 |
printf("-x %-9d\t\t\t# x resolution (flush interval)\n", hresolu); |
466 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu); |
467 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
468 |
"-ld-\t\t\t\t# limit distance off\n"); |
469 |
printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-', |
470 |
loadflags & IO_INFO ? "output" : "no"); |
471 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
472 |
inform, outform, formstr(inform), formstr(outform)); |
473 |
printf("-o%-9s\t\t\t# output", outvals); |
474 |
for (cp = outvals; *cp; cp++) |
475 |
switch (*cp) { |
476 |
case 't': case 'T': printf(" trace"); break; |
477 |
case 'o': printf(" origin"); break; |
478 |
case 'd': printf(" direction"); break; |
479 |
case 'v': printf(" value"); break; |
480 |
case 'V': printf(" contribution"); break; |
481 |
case 'l': printf(" length"); break; |
482 |
case 'L': printf(" first_length"); break; |
483 |
case 'p': printf(" point"); break; |
484 |
case 'n': printf(" normal"); break; |
485 |
case 'N': printf(" unperturbed_normal"); break; |
486 |
case 's': printf(" surface"); break; |
487 |
case 'w': printf(" weight"); break; |
488 |
case 'W': printf(" coefficient"); break; |
489 |
case 'm': printf(" modifier"); break; |
490 |
case 'M': printf(" material"); break; |
491 |
case '-': printf(" stroke"); break; |
492 |
} |
493 |
putchar('\n'); |
494 |
printf(erract[WARNING].pf != NULL ? |
495 |
"-w+\t\t\t\t# warning messages on\n" : |
496 |
"-w-\t\t\t\t# warning messages off\n"); |
497 |
print_rdefaults(); |
498 |
} |