6 |
|
* Controlling process for multiple children |
7 |
|
*/ |
8 |
|
|
9 |
+ |
#include <signal.h> |
10 |
|
#include "rcontrib.h" |
10 |
– |
#include "platform.h" |
11 |
– |
#include "rtprocess.h" |
11 |
|
#include "selcall.h" |
12 |
|
|
13 |
|
#define MAXIQ (int)(PIPE_BUF/(sizeof(FVECT)*2)) |
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 */ |
29 |
– |
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 */ |
52 |
|
goto memerr; |
53 |
|
for (i = nmods; i--; ) { |
54 |
|
MODCONT *mp = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
55 |
< |
bp->mca[i] = (MODCONT *)malloc(sizeof(MODCONT) + |
56 |
< |
sizeof(DCOLOR)*(mp->nbins-1)); |
55 |
> |
bp->mca[i] = (MODCONT *)malloc(mcsize(mp->nbins)); |
56 |
|
if (bp->mca[i] == NULL) |
57 |
|
goto memerr; |
58 |
< |
memcpy(bp->mca[i], mp, sizeof(MODCONT)-sizeof(DCOLOR)); |
59 |
< |
/* memset(bp->mca[i]->cbin, 0, sizeof(DCOLOR)*mp->nbins); */ |
58 |
> |
memcpy(bp->mca[i], mp, sizeof(MODCONT)-sizeof(DCOLORV)); |
59 |
> |
/* memset(bp->mca[i]->cbin, 0, DCOLORSIZ*mp->nbins); */ |
60 |
|
} |
61 |
|
bp->ndx = 0; |
62 |
|
bp->nadded = 0; |
86 |
|
} |
87 |
|
/* clear sums for next use */ |
88 |
|
/* for (i = nmods; i--; ) |
89 |
< |
memset(bp->mca[i]->cbin, 0, sizeof(DCOLOR)*bp->mca[i]->nbins); |
89 |
> |
memset(bp->mca[i]->cbin, 0, DCOLORSIZ*bp->mca[i]->nbins); |
90 |
|
*/ |
91 |
+ |
if (bp->next != NULL) |
92 |
+ |
error(CONSISTENCY, "free_binq() handed list"); |
93 |
|
bp->ndx = 0; |
94 |
|
bp->next = free_bq; /* push onto free list */ |
95 |
|
free_bq = bp; |
101 |
|
queue_modifiers() |
102 |
|
{ |
103 |
|
MODCONT *mpin, *mpout; |
104 |
< |
int i, j; |
104 |
> |
DCOLORV *ssrc, *sdst; |
105 |
> |
int i; |
106 |
|
|
107 |
|
if ((accumulate > 0) | (out_bq == NULL)) |
108 |
|
error(CONSISTENCY, "bad call to queue_modifiers()"); |
110 |
|
for (i = nmods; i--; ) { |
111 |
|
mpin = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
112 |
|
mpout = out_bq->mca[i]; |
113 |
< |
for (j = mpout->nbins; j--; ) |
114 |
< |
addcolor(mpout->cbin[j], mpin->cbin[j]); |
115 |
< |
memset(mpin->cbin, 0, sizeof(DCOLOR)*mpin->nbins); |
113 |
> |
ssrc = mcbin(mpin, mpin->nbins); |
114 |
> |
sdst = mcbin(mpout, mpout->nbins); |
115 |
> |
while (sdst > mpout->cbin) |
116 |
> |
*--sdst += *--ssrc; |
117 |
> |
memset(mpin->cbin, 0, DCOLORSIZ*mpin->nbins); |
118 |
|
} |
119 |
|
out_bq->nadded++; |
120 |
|
} |
124 |
|
static void |
125 |
|
add_modbin(BINQ *dst, BINQ *src) |
126 |
|
{ |
127 |
< |
int i, j; |
128 |
< |
|
127 |
> |
MODCONT *mpin, *mpout; |
128 |
> |
DCOLORV *ssrc, *sdst; |
129 |
> |
int i; |
130 |
> |
|
131 |
|
for (i = nmods; i--; ) { |
132 |
< |
MODCONT *mpin = src->mca[i]; |
133 |
< |
MODCONT *mpout = dst->mca[i]; |
134 |
< |
for (j = mpout->nbins; j--; ) |
135 |
< |
addcolor(mpout->cbin[j], mpin->cbin[j]); |
132 |
> |
mpin = src->mca[i]; |
133 |
> |
mpout = dst->mca[i]; |
134 |
> |
ssrc = mcbin(mpin, mpin->nbins); |
135 |
> |
sdst = mcbin(mpout, mpout->nbins); |
136 |
> |
while (sdst > mpout->cbin) |
137 |
> |
*--sdst += *--ssrc; |
138 |
|
} |
139 |
|
dst->nadded += src->nadded; |
140 |
|
} |
237 |
|
int i; |
238 |
|
|
239 |
|
for (i = nmods; i--; ) |
240 |
< |
memset(bp->mca[i]->cbin, 0, sizeof(DCOLOR)*bp->mca[i]->nbins); |
240 |
> |
memset(bp->mca[i]->cbin, 0, DCOLORSIZ*bp->mca[i]->nbins); |
241 |
|
bp->ndx = ndx; |
242 |
|
bp->nadded = 1; |
243 |
|
queue_output(bp); |
256 |
|
bq->nadded = kida[k].nr; |
257 |
|
/* read from child */ |
258 |
|
for (j = 0; j < nmods; j++) |
259 |
< |
if (fread(bq->mca[j]->cbin, sizeof(DCOLOR), bq->mca[j]->nbins, |
259 |
> |
if (getbinary(bq->mca[j]->cbin, DCOLORSIZ, bq->mca[j]->nbins, |
260 |
|
kida[k].infp) != bq->mca[j]->nbins) |
261 |
|
error(SYSTEM, "read error from render process"); |
262 |
|
|
274 |
|
} |
275 |
|
|
276 |
|
|
277 |
< |
/* Start child processes if we can */ |
277 |
> |
/* Start child processes if we can (call only once in parent!) */ |
278 |
|
int |
279 |
|
in_rchild() |
280 |
|
{ |
282 |
|
|
283 |
|
while (nchild < nproc) { /* fork until target reached */ |
284 |
|
errno = 0; |
285 |
< |
rval = open_process(&kida[nchild].pr, NULL); |
285 |
> |
rval = open_process(&kidpr[nchild], NULL); |
286 |
|
if (rval < 0) |
287 |
|
error(SYSTEM, "open_process() call failed"); |
288 |
|
if (rval == 0) { /* if in child, set up & return true */ |
289 |
< |
lu_doall(&modconttab, set_stdout, NULL); |
289 |
> |
lu_doall(&modconttab, &set_stdout, NULL); |
290 |
|
lu_done(&ofiletab); |
291 |
|
while (nchild--) { /* don't share other pipes */ |
292 |
< |
close(kida[nchild].pr.w); |
292 |
> |
close(kidpr[nchild].w); |
293 |
|
fclose(kida[nchild].infp); |
294 |
|
} |
295 |
|
inpfmt = (sizeof(RREAL)==sizeof(double)) ? 'd' : 'f'; |
309 |
|
if (rval != PIPE_BUF) |
310 |
|
error(CONSISTENCY, "bad value from open_process()"); |
311 |
|
/* connect to child's output */ |
312 |
< |
kida[nchild].infp = fdopen(kida[nchild].pr.r, "rb"); |
312 |
> |
kida[nchild].infp = fdopen(kidpr[nchild].r, "rb"); |
313 |
|
if (kida[nchild].infp == NULL) |
314 |
|
error(SYSTEM, "out of memory in in_rchild()"); |
307 |
– |
#ifdef getc_unlocked |
308 |
– |
flockfile(kida[nchild].infp); /* avoid mutex overhead */ |
309 |
– |
#endif |
315 |
|
kida[nchild++].nr = 0; /* mark as available */ |
316 |
|
} |
317 |
+ |
#ifdef getc_unlocked |
318 |
+ |
for (rval = nchild; rval--; ) /* avoid mutex overhead */ |
319 |
+ |
flockfile(kida[rval].infp); |
320 |
+ |
#endif |
321 |
|
return(0); /* return "false" in parent */ |
322 |
|
} |
323 |
|
|
324 |
|
|
325 |
|
/* Close child processes */ |
326 |
|
void |
327 |
< |
end_children() |
327 |
> |
end_children(int immed) |
328 |
|
{ |
329 |
< |
int status; |
330 |
< |
|
331 |
< |
while (nchild > 0) { |
332 |
< |
nchild--; |
333 |
< |
if ((status = close_process(&kida[nchild].pr)) > 0) { |
334 |
< |
sprintf(errmsg, |
335 |
< |
"rendering process returned bad status (%d)", |
336 |
< |
status); |
329 |
> |
int i; |
330 |
> |
|
331 |
> |
#ifdef SIGKILL /* error mode -- quick exit */ |
332 |
> |
for (i = nchild*immed; i-- > 0; ) |
333 |
> |
kill(kidpr[nchild].pid, SIGKILL); |
334 |
> |
#endif |
335 |
> |
if ((i = close_processes(kidpr, nchild)) > 0 && !immed) { |
336 |
> |
sprintf(errmsg, "rendering process returned bad status (%d)", |
337 |
> |
i); |
338 |
|
error(WARNING, errmsg); |
329 |
– |
} |
330 |
– |
fclose(kida[nchild].infp); |
339 |
|
} |
340 |
+ |
while (nchild-- > 0) |
341 |
+ |
fclose(kida[nchild].infp); |
342 |
|
} |
343 |
|
|
344 |
|
|
372 |
|
n = nr = 0; |
373 |
|
for (i = nchild; i--; ) { |
374 |
|
if (kida[i].nr) { |
375 |
< |
FD_SET(kida[i].pr.r, &readset); |
375 |
> |
FD_SET(kidpr[i].r, &readset); |
376 |
|
++nr; |
377 |
|
} |
378 |
< |
FD_SET(kida[i].pr.r, &errset); |
379 |
< |
if (kida[i].pr.r >= n) |
380 |
< |
n = kida[i].pr.r + 1; |
378 |
> |
FD_SET(kidpr[i].r, &errset); |
379 |
> |
if (kidpr[i].r >= n) |
380 |
> |
n = kidpr[i].r + 1; |
381 |
|
} |
382 |
|
if (!nr) /* nothing to wait for? */ |
383 |
|
return(-1); |
394 |
|
FD_ZERO(&errset); |
395 |
|
n = -1; /* read results from child(ren) */ |
396 |
|
for (i = nchild; i--; ) { |
397 |
< |
if (FD_ISSET(kida[i].pr.r, &errset)) |
397 |
> |
if (FD_ISSET(kidpr[i].r, &errset)) |
398 |
|
error(USER, "rendering process died"); |
399 |
< |
if (FD_ISSET(kida[i].pr.r, &readset)) |
399 |
> |
if (FD_ISSET(kidpr[i].r, &readset)) |
400 |
|
queue_results(n = i); |
401 |
|
} |
402 |
|
return(n); /* first available child */ |
407 |
|
void |
408 |
|
parental_loop() |
409 |
|
{ |
410 |
< |
static int ignore_warning_given = 0; |
401 |
< |
int qlimit = (accumulate == 1) ? 1 : MAXIQ-1; |
410 |
> |
const int qlimit = (accumulate == 1) ? 1 : MAXIQ-1; |
411 |
|
int ninq = 0; |
412 |
|
FVECT orgdir[2*MAXIQ]; |
413 |
|
int i, n; |
416 |
|
flockfile(stdin); /* avoid lock/unlock overhead */ |
417 |
|
#endif |
418 |
|
while (getvec(orgdir[2*ninq]) == 0 && getvec(orgdir[2*ninq+1]) == 0) { |
419 |
< |
if (orgdir[2*ninq+1][0] == 0.0 && /* asking for flush? */ |
420 |
< |
(orgdir[2*ninq+1][1] == 0.0) & |
421 |
< |
(orgdir[2*ninq+1][2] == 0.0)) { |
422 |
< |
if (accumulate != 1) { |
423 |
< |
if (!ignore_warning_given++) |
424 |
< |
error(WARNING, |
416 |
< |
"dummy ray(s) ignored during accumulation\n"); |
417 |
< |
continue; |
418 |
< |
} |
419 |
< |
while (next_child_nq(1) >= 0) |
420 |
< |
; /* clear the queue */ |
421 |
< |
lastdone = lastray = 0; |
422 |
< |
if ((yres <= 0) | (xres <= 0)) |
423 |
< |
waitflush = 1; /* flush next */ |
424 |
< |
put_zero_record(++lastray); |
425 |
< |
} else if (++ninq >= qlimit || |
419 |
> |
const int zero_ray = orgdir[2*ninq+1][0] == 0.0 && |
420 |
> |
(orgdir[2*ninq+1][1] == 0.0) & |
421 |
> |
(orgdir[2*ninq+1][2] == 0.0); |
422 |
> |
ninq += !zero_ray; |
423 |
> |
/* Zero ray cannot go in input queue */ |
424 |
> |
if (zero_ray ? ninq : ninq >= qlimit || |
425 |
|
lastray/accumulate != (lastray+ninq)/accumulate) { |
426 |
|
i = next_child_nq(0); /* manages output */ |
427 |
|
n = ninq; |
428 |
< |
if (accumulate != 1) /* request flush? */ |
428 |
> |
if (accumulate > 1) /* need terminator? */ |
429 |
|
memset(orgdir[2*n++], 0, sizeof(FVECT)*2); |
430 |
|
n *= sizeof(FVECT)*2; /* send assignment */ |
431 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
431 |
> |
if (writebuf(kidpr[i].w, orgdir, n) != n) |
432 |
|
error(SYSTEM, "pipe write error"); |
433 |
|
kida[i].r1 = lastray+1; |
434 |
|
lastray += kida[i].nr = ninq; /* mark as busy */ |
436 |
– |
ninq = 0; |
435 |
|
if (lastray < lastdone) { /* RNUMBER wrapped? */ |
436 |
|
while (next_child_nq(1) >= 0) |
437 |
|
; |
438 |
< |
lastdone = lastray = 0; |
438 |
> |
lastray -= ninq; |
439 |
> |
lastdone = lastray %= accumulate; |
440 |
|
} |
441 |
+ |
ninq = 0; |
442 |
|
} |
443 |
< |
if (raysleft && !--raysleft) |
443 |
> |
if (zero_ray) { /* put bogus record? */ |
444 |
> |
if ((yres <= 0) | (xres <= 1) && |
445 |
> |
(lastray+1) % accumulate == 0) { |
446 |
> |
while (next_child_nq(1) >= 0) |
447 |
> |
; /* clear the queue */ |
448 |
> |
lastdone = lastray = accumulate-1; |
449 |
> |
waitflush = 1; /* flush next */ |
450 |
> |
} |
451 |
> |
put_zero_record(++lastray); |
452 |
> |
} |
453 |
> |
if (!morays()) |
454 |
|
break; /* preemptive EOI */ |
455 |
|
} |
456 |
|
while (next_child_nq(1) >= 0) /* empty results queue */ |
472 |
|
next_child_ready() |
473 |
|
{ |
474 |
|
fd_set writeset, errset; |
475 |
< |
int i, n, nqr; |
475 |
> |
int i, n; |
476 |
|
|
477 |
|
for (i = nchild; i--; ) /* see if there's one free first */ |
478 |
|
if (!kida[i].nr) |
481 |
|
FD_ZERO(&writeset); FD_ZERO(&errset); |
482 |
|
n = 0; |
483 |
|
for (i = nchild; i--; ) { |
484 |
< |
FD_SET(kida[i].pr.w, &writeset); |
485 |
< |
FD_SET(kida[i].pr.r, &errset); |
486 |
< |
if (kida[i].pr.w >= n) |
487 |
< |
n = kida[i].pr.w + 1; |
488 |
< |
if (kida[i].pr.r >= n) |
489 |
< |
n = kida[i].pr.r + 1; |
484 |
> |
FD_SET(kidpr[i].w, &writeset); |
485 |
> |
FD_SET(kidpr[i].r, &errset); |
486 |
> |
if (kidpr[i].w >= n) |
487 |
> |
n = kidpr[i].w + 1; |
488 |
> |
if (kidpr[i].r >= n) |
489 |
> |
n = kidpr[i].r + 1; |
490 |
|
} |
491 |
|
errno = 0; |
492 |
|
n = select(n, NULL, &writeset, &errset, NULL); |
494 |
|
error(SYSTEM, "select() error in next_child_ready()"); |
495 |
|
n = -1; /* identify waiting child */ |
496 |
|
for (i = nchild; i--; ) { |
497 |
< |
if (FD_ISSET(kida[i].pr.r, &errset)) |
497 |
> |
if (FD_ISSET(kidpr[i].r, &errset)) |
498 |
|
error(USER, "rendering process died"); |
499 |
< |
if (FD_ISSET(kida[i].pr.w, &writeset)) |
499 |
> |
if (FD_ISSET(kidpr[i].w, &writeset)) |
500 |
|
kida[n = i].nr = 0; |
501 |
|
} |
502 |
|
return(n); /* first available child */ |
527 |
|
if (++ninq >= MAXIQ) { |
528 |
|
i = next_child_ready(); /* get eager child */ |
529 |
|
n = sizeof(FVECT)*2 * ninq; /* give assignment */ |
530 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
530 |
> |
if (writebuf(kidpr[i].w, orgdir, n) != n) |
531 |
|
error(SYSTEM, "pipe write error"); |
532 |
|
kida[i].r1 = lastray+1; |
533 |
|
lastray += kida[i].nr = ninq; |
524 |
– |
ninq = 0; |
534 |
|
if (lastray < lastdone) /* RNUMBER wrapped? */ |
535 |
|
lastdone = lastray = 0; |
536 |
+ |
ninq = 0; |
537 |
|
} |
538 |
< |
if (raysleft && !--raysleft) |
538 |
> |
if (!morays()) |
539 |
|
break; /* preemptive EOI */ |
540 |
|
} |
541 |
|
if (ninq) { /* polish off input */ |
542 |
|
i = next_child_ready(); |
543 |
|
n = sizeof(FVECT)*2 * ninq; |
544 |
< |
if (writebuf(kida[i].pr.w, (char *)orgdir, n) != n) |
544 |
> |
if (writebuf(kidpr[i].w, orgdir, n) != n) |
545 |
|
error(SYSTEM, "pipe write error"); |
546 |
|
kida[i].r1 = lastray+1; |
547 |
|
lastray += kida[i].nr = ninq; |
548 |
|
ninq = 0; |
549 |
|
} |
550 |
< |
for (i = nchild; i--; ) { /* get results */ |
551 |
< |
close(kida[i].pr.w); |
550 |
> |
memset(orgdir, 0, sizeof(FVECT)*2); /* get results */ |
551 |
> |
for (i = nchild; i--; ) { |
552 |
> |
writebuf(kidpr[i].w, orgdir, sizeof(FVECT)*2); |
553 |
|
queue_results(i); |
554 |
|
} |
555 |
|
if (recover) /* and from before? */ |
556 |
|
queue_modifiers(); |
557 |
< |
end_children(); /* free up file descriptors */ |
557 |
> |
end_children(0); /* free up file descriptors */ |
558 |
|
for (i = 0; i < nmods; i++) |
559 |
|
mod_output(out_bq->mca[i]); /* output accumulated record */ |
560 |
|
end_record(); |