23 |
|
static BINQ *out_bq = NULL; /* output bin queue */ |
24 |
|
static BINQ *free_bq = NULL; /* free queue entries */ |
25 |
|
|
26 |
+ |
static SUBPROC kidpr[MAXPROCESS]; /* our child processes */ |
27 |
+ |
|
28 |
|
static struct { |
29 |
|
RNUMBER r1; /* assigned ray starting index */ |
28 |
– |
SUBPROC pr; /* PID, i/o descriptors */ |
30 |
|
FILE *infp; /* file pointer to read from process */ |
31 |
|
int nr; /* number of rays to sum (0 if free) */ |
32 |
< |
} kida[MAXPROCESS]; /* our child processes */ |
32 |
> |
} kida[MAXPROCESS]; /* our child process i/o */ |
33 |
|
|
34 |
|
|
35 |
|
/* Get new bin queue entry */ |
266 |
|
} |
267 |
|
|
268 |
|
|
269 |
< |
/* Start child processes if we can */ |
269 |
> |
/* Start child processes if we can (call only once in parent!) */ |
270 |
|
int |
271 |
|
in_rchild() |
272 |
|
{ |
274 |
|
|
275 |
|
while (nchild < nproc) { /* fork until target reached */ |
276 |
|
errno = 0; |
277 |
< |
rval = open_process(&kida[nchild].pr, NULL); |
277 |
> |
rval = open_process(&kidpr[nchild], NULL); |
278 |
|
if (rval < 0) |
279 |
|
error(SYSTEM, "open_process() call failed"); |
280 |
|
if (rval == 0) { /* if in child, set up & return true */ |
281 |
|
lu_doall(&modconttab, &set_stdout, NULL); |
282 |
|
lu_done(&ofiletab); |
283 |
|
while (nchild--) { /* don't share other pipes */ |
284 |
< |
close(kida[nchild].pr.w); |
284 |
> |
close(kidpr[nchild].w); |
285 |
|
fclose(kida[nchild].infp); |
286 |
|
} |
287 |
|
inpfmt = (sizeof(RREAL)==sizeof(double)) ? 'd' : 'f'; |
301 |
|
if (rval != PIPE_BUF) |
302 |
|
error(CONSISTENCY, "bad value from open_process()"); |
303 |
|
/* connect to child's output */ |
304 |
< |
kida[nchild].infp = fdopen(kida[nchild].pr.r, "rb"); |
304 |
> |
kida[nchild].infp = fdopen(kidpr[nchild].r, "rb"); |
305 |
|
if (kida[nchild].infp == NULL) |
306 |
|
error(SYSTEM, "out of memory in in_rchild()"); |
306 |
– |
#if 0 |
307 |
– |
flockfile(kida[nchild].infp); /* avoid mutex overhead */ |
308 |
– |
#endif |
307 |
|
kida[nchild++].nr = 0; /* mark as available */ |
308 |
|
} |
309 |
+ |
#ifdef getc_unlocked |
310 |
+ |
for (rval = nchild; rval--; ) /* avoid mutex overhead */ |
311 |
+ |
flockfile(kida[rval].infp); |
312 |
+ |
#endif |
313 |
|
return(0); /* return "false" in parent */ |
314 |
|
} |
315 |
|
|
318 |
|
void |
319 |
|
end_children(int immed) |
320 |
|
{ |
321 |
< |
int status; |
322 |
< |
|
323 |
< |
while (nchild > 0) { |
324 |
< |
nchild--; |
325 |
< |
#ifdef SIGKILL |
324 |
< |
if (immed) /* error mode -- quick exit */ |
325 |
< |
kill(kida[nchild].pr.pid, SIGKILL); |
321 |
> |
int i; |
322 |
> |
|
323 |
> |
#ifdef SIGKILL /* error mode -- quick exit */ |
324 |
> |
for (i = nchild*immed; i-- > 0; ) |
325 |
> |
kill(kidpr[nchild].pid, SIGKILL); |
326 |
|
#endif |
327 |
< |
if ((status = close_process(&kida[nchild].pr)) > 0 && !immed) { |
328 |
< |
sprintf(errmsg, |
329 |
< |
"rendering process returned bad status (%d)", |
330 |
< |
status); |
327 |
> |
if ((i = close_processes(kidpr, nchild)) > 0 && !immed) { |
328 |
> |
sprintf(errmsg, "rendering process returned bad status (%d)", |
329 |
> |
i); |
330 |
|
error(WARNING, errmsg); |
332 |
– |
} |
333 |
– |
fclose(kida[nchild].infp); |
331 |
|
} |
332 |
+ |
while (nchild-- > 0) |
333 |
+ |
fclose(kida[nchild].infp); |
334 |
|
} |
335 |
|
|
336 |
|
|
364 |
|
n = nr = 0; |
365 |
|
for (i = nchild; i--; ) { |
366 |
|
if (kida[i].nr) { |
367 |
< |
FD_SET(kida[i].pr.r, &readset); |
367 |
> |
FD_SET(kidpr[i].r, &readset); |
368 |
|
++nr; |
369 |
|
} |
370 |
< |
FD_SET(kida[i].pr.r, &errset); |
371 |
< |
if (kida[i].pr.r >= n) |
372 |
< |
n = kida[i].pr.r + 1; |
370 |
> |
FD_SET(kidpr[i].r, &errset); |
371 |
> |
if (kidpr[i].r >= n) |
372 |
> |
n = kidpr[i].r + 1; |
373 |
|
} |
374 |
|
if (!nr) /* nothing to wait for? */ |
375 |
|
return(-1); |
386 |
|
FD_ZERO(&errset); |
387 |
|
n = -1; /* read results from child(ren) */ |
388 |
|
for (i = nchild; i--; ) { |
389 |
< |
if (FD_ISSET(kida[i].pr.r, &errset)) |
389 |
> |
if (FD_ISSET(kidpr[i].r, &errset)) |
390 |
|
error(USER, "rendering process died"); |
391 |
< |
if (FD_ISSET(kida[i].pr.r, &readset)) |
391 |
> |
if (FD_ISSET(kidpr[i].r, &readset)) |
392 |
|
queue_results(n = i); |
393 |
|
} |
394 |
|
return(n); /* first available child */ |
420 |
|
if (accumulate > 1) /* need terminator? */ |
421 |
|
memset(orgdir[2*n++], 0, sizeof(FVECT)*2); |
422 |
|
n *= sizeof(FVECT)*2; /* send assignment */ |
423 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
423 |
> |
if (writebuf(kidpr[i].w, (char *)orgdir, n) != n) |
424 |
|
error(SYSTEM, "pipe write error"); |
425 |
|
kida[i].r1 = lastray+1; |
426 |
|
lastray += kida[i].nr = ninq; /* mark as busy */ |
473 |
|
FD_ZERO(&writeset); FD_ZERO(&errset); |
474 |
|
n = 0; |
475 |
|
for (i = nchild; i--; ) { |
476 |
< |
FD_SET(kida[i].pr.w, &writeset); |
477 |
< |
FD_SET(kida[i].pr.r, &errset); |
478 |
< |
if (kida[i].pr.w >= n) |
479 |
< |
n = kida[i].pr.w + 1; |
480 |
< |
if (kida[i].pr.r >= n) |
481 |
< |
n = kida[i].pr.r + 1; |
476 |
> |
FD_SET(kidpr[i].w, &writeset); |
477 |
> |
FD_SET(kidpr[i].r, &errset); |
478 |
> |
if (kidpr[i].w >= n) |
479 |
> |
n = kidpr[i].w + 1; |
480 |
> |
if (kidpr[i].r >= n) |
481 |
> |
n = kidpr[i].r + 1; |
482 |
|
} |
483 |
|
errno = 0; |
484 |
|
n = select(n, NULL, &writeset, &errset, NULL); |
486 |
|
error(SYSTEM, "select() error in next_child_ready()"); |
487 |
|
n = -1; /* identify waiting child */ |
488 |
|
for (i = nchild; i--; ) { |
489 |
< |
if (FD_ISSET(kida[i].pr.r, &errset)) |
489 |
> |
if (FD_ISSET(kidpr[i].r, &errset)) |
490 |
|
error(USER, "rendering process died"); |
491 |
< |
if (FD_ISSET(kida[i].pr.w, &writeset)) |
491 |
> |
if (FD_ISSET(kidpr[i].w, &writeset)) |
492 |
|
kida[n = i].nr = 0; |
493 |
|
} |
494 |
|
return(n); /* first available child */ |
519 |
|
if (++ninq >= MAXIQ) { |
520 |
|
i = next_child_ready(); /* get eager child */ |
521 |
|
n = sizeof(FVECT)*2 * ninq; /* give assignment */ |
522 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
522 |
> |
if (writebuf(kidpr[i].w, (char *)orgdir, n) != n) |
523 |
|
error(SYSTEM, "pipe write error"); |
524 |
|
kida[i].r1 = lastray+1; |
525 |
|
lastray += kida[i].nr = ninq; |
533 |
|
if (ninq) { /* polish off input */ |
534 |
|
i = next_child_ready(); |
535 |
|
n = sizeof(FVECT)*2 * ninq; |
536 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
536 |
> |
if (writebuf(kidpr[i].w, (char *)orgdir, n) != n) |
537 |
|
error(SYSTEM, "pipe write error"); |
538 |
|
kida[i].r1 = lastray+1; |
539 |
|
lastray += kida[i].nr = ninq; |
541 |
|
} |
542 |
|
memset(orgdir, 0, sizeof(FVECT)*2); /* get results */ |
543 |
|
for (i = nchild; i--; ) { |
544 |
< |
writebuf(kida[i].pr.w, (char *)orgdir, sizeof(FVECT)*2); |
544 |
> |
writebuf(kidpr[i].w, (char *)orgdir, sizeof(FVECT)*2); |
545 |
|
queue_results(i); |
546 |
|
} |
547 |
|
if (recover) /* and from before? */ |