| 265 |
|
} |
| 266 |
|
|
| 267 |
|
|
| 268 |
< |
/* Start child processes if we can */ |
| 268 |
> |
/* Start child processes if we can (call only once in parent!) */ |
| 269 |
|
int |
| 270 |
|
in_rchild() |
| 271 |
|
{ |
| 277 |
|
if (rval < 0) |
| 278 |
|
error(SYSTEM, "open_process() call failed"); |
| 279 |
|
if (rval == 0) { /* if in child, set up & return true */ |
| 280 |
< |
lu_doall(&modconttab, set_stdout, NULL); |
| 280 |
> |
lu_doall(&modconttab, &set_stdout, NULL); |
| 281 |
|
lu_done(&ofiletab); |
| 282 |
|
while (nchild--) { /* don't share other pipes */ |
| 283 |
|
close(kida[nchild].pr.w); |
| 303 |
|
kida[nchild].infp = fdopen(kida[nchild].pr.r, "rb"); |
| 304 |
|
if (kida[nchild].infp == NULL) |
| 305 |
|
error(SYSTEM, "out of memory in in_rchild()"); |
| 306 |
– |
#ifdef getc_unlocked |
| 307 |
– |
flockfile(kida[nchild].infp); /* avoid mutex overhead */ |
| 308 |
– |
#endif |
| 306 |
|
kida[nchild++].nr = 0; /* mark as available */ |
| 307 |
|
} |
| 308 |
+ |
#ifdef getc_unlocked |
| 309 |
+ |
for (rval = nchild; rval--; ) /* avoid mutex overhead */ |
| 310 |
+ |
flockfile(kida[rval].infp); |
| 311 |
+ |
#endif |
| 312 |
|
return(0); /* return "false" in parent */ |
| 313 |
|
} |
| 314 |
|
|
| 410 |
|
flockfile(stdin); /* avoid lock/unlock overhead */ |
| 411 |
|
#endif |
| 412 |
|
while (getvec(orgdir[2*ninq]) == 0 && getvec(orgdir[2*ninq+1]) == 0) { |
| 413 |
< |
if (orgdir[2*ninq+1][0] == 0.0 && /* asking for flush? */ |
| 414 |
< |
(orgdir[2*ninq+1][1] == 0.0) & |
| 415 |
< |
(orgdir[2*ninq+1][2] == 0.0)) { |
| 416 |
< |
if (ninq) { /* preempt our queue */ |
| 417 |
< |
i = next_child_nq(0); |
| 418 |
< |
n = ninq; |
| 418 |
< |
memset(orgdir[2*n++], 0, sizeof(FVECT)*2); |
| 419 |
< |
n *= sizeof(FVECT)*2; |
| 420 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
| 421 |
< |
error(SYSTEM, "pipe write error"); |
| 422 |
< |
kida[i].r1 = lastray+1; |
| 423 |
< |
lastray += kida[i].nr = ninq; |
| 424 |
< |
ninq = 0; |
| 425 |
< |
} |
| 426 |
< |
if ((yres <= 0) | (xres <= 0) && |
| 427 |
< |
(lastray+1) % accumulate == 0) { |
| 428 |
< |
while (next_child_nq(1) >= 0) |
| 429 |
< |
; /* clear the queue */ |
| 430 |
< |
lastdone = lastray %= accumulate; |
| 431 |
< |
waitflush = 1; /* flush next */ |
| 432 |
< |
} |
| 433 |
< |
put_zero_record(++lastray); |
| 434 |
< |
} else if (++ninq >= qlimit || |
| 413 |
> |
const int zero_ray = orgdir[2*ninq+1][0] == 0.0 && |
| 414 |
> |
(orgdir[2*ninq+1][1] == 0.0) & |
| 415 |
> |
(orgdir[2*ninq+1][2] == 0.0); |
| 416 |
> |
ninq += !zero_ray; |
| 417 |
> |
/* Zero ray cannot go in input queue */ |
| 418 |
> |
if (zero_ray ? ninq : ninq >= qlimit || |
| 419 |
|
lastray/accumulate != (lastray+ninq)/accumulate) { |
| 420 |
|
i = next_child_nq(0); /* manages output */ |
| 421 |
|
n = ninq; |
| 422 |
< |
if (accumulate != 1) /* request flush? */ |
| 422 |
> |
if (accumulate > 1) /* need terminator? */ |
| 423 |
|
memset(orgdir[2*n++], 0, sizeof(FVECT)*2); |
| 424 |
|
n *= sizeof(FVECT)*2; /* send assignment */ |
| 425 |
|
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
| 434 |
|
} |
| 435 |
|
ninq = 0; |
| 436 |
|
} |
| 437 |
+ |
if (zero_ray) { /* put bogus record? */ |
| 438 |
+ |
if ((yres <= 0) | (xres <= 1) && |
| 439 |
+ |
(lastray+1) % accumulate == 0) { |
| 440 |
+ |
while (next_child_nq(1) >= 0) |
| 441 |
+ |
; /* clear the queue */ |
| 442 |
+ |
lastdone = lastray = accumulate-1; |
| 443 |
+ |
waitflush = 1; /* flush next */ |
| 444 |
+ |
} |
| 445 |
+ |
put_zero_record(++lastray); |
| 446 |
+ |
} |
| 447 |
|
if (raysleft && !--raysleft) |
| 448 |
|
break; /* preemptive EOI */ |
| 449 |
|
} |
| 525 |
|
error(SYSTEM, "pipe write error"); |
| 526 |
|
kida[i].r1 = lastray+1; |
| 527 |
|
lastray += kida[i].nr = ninq; |
| 534 |
– |
ninq = 0; |
| 528 |
|
if (lastray < lastdone) /* RNUMBER wrapped? */ |
| 529 |
|
lastdone = lastray = 0; |
| 530 |
+ |
ninq = 0; |
| 531 |
|
} |
| 532 |
|
if (raysleft && !--raysleft) |
| 533 |
|
break; /* preemptive EOI */ |
