| 3 |
|
#endif |
| 4 |
|
/* |
| 5 |
|
* General component matrix combiner, operating on a row at a time. |
| 6 |
+ |
* |
| 7 |
+ |
* Multi-processing mode under Unix creates children that each work |
| 8 |
+ |
* on one input row at a time, fed by the original process. Final conversion |
| 9 |
+ |
* and output to stdout is sorted by first child while its siblings send it |
| 10 |
+ |
* their record calculations. |
| 11 |
|
*/ |
| 12 |
|
|
| 8 |
– |
#include <signal.h> |
| 13 |
|
#include <math.h> |
| 14 |
|
#include "platform.h" |
| 15 |
|
#include "rtprocess.h" |
| 61 |
|
SUBPROC *cproc = NULL; /* child process array */ |
| 62 |
|
int nchildren = 0; /* # of child processes */ |
| 63 |
|
int inchild = -1; /* our child ID (-1: parent) */ |
| 60 |
– |
int pgid = -1; /* process group ID */ |
| 61 |
– |
int nr_out = 0; /* # of rows output by kids */ |
| 64 |
|
|
| 65 |
|
static int checksymbolic(ROPMAT *rop); |
| 66 |
|
|
| 65 |
– |
static void |
| 66 |
– |
on_sigio(int dummy) |
| 67 |
– |
{ |
| 68 |
– |
nr_out++; /* happens when child outputs row */ |
| 69 |
– |
} |
| 70 |
– |
|
| 67 |
|
static int |
| 68 |
|
split_input(ROPMAT *rop) |
| 69 |
|
{ |
| 545 |
|
} |
| 546 |
|
} |
| 547 |
|
|
| 548 |
+ |
static void |
| 549 |
+ |
reset_inputs(void) |
| 550 |
+ |
{ |
| 551 |
+ |
int i = nmats; |
| 552 |
+ |
|
| 553 |
+ |
fpurge(stdin); /* discard previous matrix input */ |
| 554 |
+ |
while (i--) { |
| 555 |
+ |
if (mop[i].infp != stdin) |
| 556 |
+ |
fclose(mop[i].infp); /* ! pclose() */ |
| 557 |
+ |
mop[i].infp = stdin; |
| 558 |
+ |
mop[i].imx.dtype = DTdouble; |
| 559 |
+ |
mop[i].imx.pflags &= ~RMF_SWAPIN; |
| 560 |
+ |
} |
| 561 |
+ |
} |
| 562 |
+ |
|
| 563 |
|
static int |
| 564 |
|
spawned_children(int np) |
| 565 |
|
{ |
| 566 |
+ |
size_t recsize = 0; |
| 567 |
|
int i, rv; |
| 568 |
|
|
| 569 |
|
#if defined(_WIN32) || defined(_WIN64) |
| 572 |
|
np = 1; |
| 573 |
|
} else |
| 574 |
|
#endif |
| 575 |
< |
if ((in_nrows > 0) & (np > in_nrows)) |
| 576 |
< |
np = in_nrows; |
| 575 |
> |
if ((in_nrows > 0) & (np*4 > in_nrows)) |
| 576 |
> |
np = in_nrows/4; |
| 577 |
|
/* we'll be doing a row at a time */ |
| 578 |
|
for (i = 0; i < nmats; i++) { |
| 579 |
|
mop[i].imx.nrows = 1; |
| 580 |
|
if (!rmx_prepare(&mop[i].imx)) |
| 581 |
|
goto memerror; |
| 582 |
+ |
recsize += rmx_array_size(&mop[i].imx); |
| 583 |
|
if (mop[i].rmp != &mop[i].imx) { |
| 584 |
|
mop[i].rmp->nrows = 1; |
| 585 |
|
if (!rmx_prepare(mop[i].rmp)) |
| 600 |
|
mop[nmats].imx.nrows = 1; |
| 601 |
|
if (!rmx_prepare(&mop[nmats].imx)) |
| 602 |
|
goto memerror; |
| 603 |
< |
if (np <= 1) { /* single process return point */ |
| 603 |
> |
if (np <= 1) { /* single process return */ |
| 604 |
|
#ifdef getc_unlocked |
| 605 |
|
for (i = 0; i < nmats; i++) |
| 606 |
|
flockfile(mop[i].infp); |
| 608 |
|
#endif |
| 609 |
|
return(0); |
| 610 |
|
} |
| 598 |
– |
pgid = setpgrp(); /* set process group ID */ |
| 599 |
– |
signal(SIGIO, on_sigio); |
| 611 |
|
fflush(stdout); /* flush header & spawn children */ |
| 612 |
< |
cproc = (SUBPROC *)malloc(sizeof(SUBPROC)*np); |
| 612 |
> |
nchildren = np+1; |
| 613 |
> |
cproc = (SUBPROC *)malloc(sizeof(SUBPROC)*nchildren); |
| 614 |
|
if (!cproc) |
| 615 |
|
goto memerror; |
| 616 |
< |
nchildren = np; |
| 617 |
< |
for (i = 0; i < np; i++) { |
| 618 |
< |
cproc[i].flags = PF_FILT_OUT; |
| 619 |
< |
cproc[i].w = dup(1); |
| 616 |
> |
/* first child becomes stdout filter */ |
| 617 |
> |
cproc[0].flags = PF_FILT_OUT; |
| 618 |
> |
cproc[0].w = fileno(stdout); |
| 619 |
> |
cproc[0].r = 0; |
| 620 |
> |
cproc[0].pid = -1; |
| 621 |
> |
rv = open_process(&cproc[i], NULL); |
| 622 |
> |
if (rv < 0) { |
| 623 |
> |
perror("fork"); |
| 624 |
> |
exit(1); |
| 625 |
> |
} |
| 626 |
> |
if (rv == 0) { /* loop if first child */ |
| 627 |
> |
inchild = 0; |
| 628 |
> |
reset_inputs(); |
| 629 |
> |
output_loop(); |
| 630 |
> |
_exit(0); |
| 631 |
> |
} |
| 632 |
> |
/* start other children */ |
| 633 |
> |
for (i = 1; (i < nchildren) & (rv > 0); i++) { |
| 634 |
> |
cproc[i].flags = 0; |
| 635 |
> |
cproc[i].w = 1; |
| 636 |
|
cproc[i].r = 0; |
| 637 |
|
cproc[i].pid = -1; |
| 638 |
|
rv = open_process(&cproc[i], NULL); |
| 611 |
– |
if (rv <= 0) break; |
| 639 |
|
} |
| 613 |
– |
if (rv > 0) |
| 614 |
– |
return(1); /* parent return value */ |
| 640 |
|
if (rv < 0) { |
| 641 |
|
perror("fork"); |
| 642 |
+ |
close_processes(cproc, i); |
| 643 |
|
exit(1); |
| 644 |
|
} |
| 645 |
+ |
if (rv > 0) /* parent return? */ |
| 646 |
+ |
return(1); |
| 647 |
|
inchild = i; /* our child index */ |
| 648 |
< |
while (i-- > 0) /* don't share siblings' pipes */ |
| 648 |
> |
while (--i > 0) /* don't share siblings' pipes */ |
| 649 |
|
close(cproc[i].w); |
| 650 |
< |
fpurge(stdin); /* discard previous matrix input */ |
| 650 |
> |
reset_inputs(); |
| 651 |
|
#ifdef getc_unlocked |
| 652 |
|
flockfile(stdin); |
| 653 |
|
#endif |
| 626 |
– |
for (i = 0; i < nmats; i++) { |
| 627 |
– |
if (mop[i].infp != stdin) |
| 628 |
– |
fclose(mop[i].infp); /* ! pclose() */ |
| 629 |
– |
mop[i].infp = stdin; |
| 630 |
– |
mop[i].imx.dtype = DTdouble; |
| 631 |
– |
} |
| 654 |
|
return(0); /* child return */ |
| 655 |
|
memerror: |
| 656 |
|
fputs("Out of memory in spawned_children()\n", stderr); |
| 658 |
|
} |
| 659 |
|
|
| 660 |
|
static int |
| 661 |
< |
parent_loop() |
| 661 |
> |
parent_loop(void) |
| 662 |
|
{ |
| 641 |
– |
FILE **outfp = (FILE **)malloc(nchildren*sizeof(FILE *)); |
| 663 |
|
int i; |
| 664 |
|
|
| 665 |
< |
if (!outfp) goto memerror; |
| 666 |
< |
for (i = 0; i < nchildren; i++) { |
| 667 |
< |
outfp[i] = fdopen(cproc[i].w, "w"); |
| 647 |
< |
if (!outfp[i]) goto memerror; |
| 665 |
> |
rmx_reset(&mop[nmats].imx); /* not doing output side */ |
| 666 |
> |
if (mop[nmats].rmp != &mop[nmats].imx) |
| 667 |
> |
rmx_reset(mop[nmats].rmp); |
| 668 |
|
#ifdef getc_unlocked |
| 649 |
– |
flockfile(outfp[i]); |
| 650 |
– |
#endif |
| 651 |
– |
} |
| 652 |
– |
#ifdef getc_unlocked |
| 669 |
|
for (i = 0; i < nmats; i++) |
| 670 |
|
flockfile(mop[i].infp); |
| 671 |
|
#endif |
| 672 |
+ |
/* load & send rows to kids */ |
| 673 |
|
for (cur_row = 0; (in_nrows <= 0) | (cur_row < in_nrows); cur_row++) { |
| 674 |
< |
FILE *ofp = outfp[cur_row % nchildren]; |
| 674 |
> |
int wfd = cproc[1 + cur_row%(nchildren-1)].w; |
| 675 |
|
for (i = 0; i < nmats; i++) |
| 676 |
|
if (!rmx_load_row(mop[i].imx.mtx, &mop[i].imx, mop[i].infp)) { |
| 677 |
|
if (cur_row > in_nrows) /* unknown #input rows? */ |
| 683 |
|
if (i < nmats) |
| 684 |
|
break; |
| 685 |
|
for (i = 0; i < nmats; i++) |
| 686 |
< |
if (!rmx_write_data(mop[i].imx.mtx, mop[i].imx.ncomp, |
| 687 |
< |
mop[i].imx.ncols, DTdouble, ofp)) |
| 688 |
< |
return(0); |
| 672 |
< |
if (fflush(ofp) == EOF) |
| 673 |
< |
return(0); |
| 686 |
> |
if (writebuf(wfd, mop[i].imx.mtx, rmx_array_size(&mop[i].imx)) |
| 687 |
> |
!= rmx_array_size(&mop[i].imx)) |
| 688 |
> |
return(0); |
| 689 |
|
} |
| 675 |
– |
for (i = 0; i < nchildren; i++) |
| 676 |
– |
fclose(outfp[i]); |
| 677 |
– |
free(outfp); |
| 690 |
|
i = close_processes(cproc, nchildren); |
| 691 |
|
free(cproc); cproc = NULL; |
| 692 |
|
if (i < 0) { |
| 704 |
|
} |
| 705 |
|
|
| 706 |
|
static int |
| 707 |
< |
combine_input() |
| 707 |
> |
combine_input(void) |
| 708 |
|
{ |
| 709 |
< |
const int row0 = (inchild >= 0)*inchild; |
| 709 |
> |
const int row0 = (inchild > 0)*(inchild-1); |
| 710 |
|
const int rstep = nchildren + !nchildren; |
| 711 |
|
ROPMAT *res = &mop[nmats]; |
| 712 |
|
int set_r, set_c; |
| 713 |
|
RMATRIX *tmp = NULL; |
| 714 |
|
int co_set; |
| 703 |
– |
sigset_t iomask; |
| 715 |
|
int i; |
| 716 |
|
|
| 717 |
|
if (mcat && mcat_last && |
| 731 |
|
set_c = varlookup("c") != NULL && !vardefined("c"); |
| 732 |
|
} else /* save a little time */ |
| 733 |
|
set_r = set_c = 0; |
| 734 |
< |
|
| 724 |
< |
sigemptyset(&iomask); /* read/process row-by-row */ |
| 725 |
< |
sigaddset(&iomask, SIGIO); |
| 734 |
> |
/* read/process row-by-row */ |
| 735 |
|
for (cur_row = row0; (in_nrows <= 0) | (cur_row < in_nrows); cur_row += rstep) { |
| 736 |
|
RMATRIX *mres = NULL; |
| 737 |
< |
for (i = 0; i < nmats; i++) { |
| 729 |
< |
if (inchild >= 0) sigprocmask(SIG_BLOCK, &iomask, NULL); |
| 737 |
> |
for (i = 0; i < nmats; i++) |
| 738 |
|
if (!rmx_load_row(mop[i].imx.mtx, &mop[i].imx, mop[i].infp)) { |
| 739 |
|
if (cur_row > in_nrows) /* unknown #input rows? */ |
| 740 |
|
break; |
| 742 |
|
mop[i].inspec, cur_row); |
| 743 |
|
return(0); |
| 744 |
|
} |
| 737 |
– |
if (inchild >= 0) sigprocmask(SIG_UNBLOCK, &iomask, NULL); |
| 738 |
– |
} |
| 745 |
|
if (i < nmats) |
| 746 |
|
break; |
| 747 |
|
for (i = 0; i < nmats; i++) |
| 783 |
|
return(0); |
| 784 |
|
} |
| 785 |
|
rmx_free(mres); mres = NULL; |
| 786 |
< |
if (inchild >= 0) { /* children share stdout */ |
| 787 |
< |
while (nr_out < cur_row) |
| 788 |
< |
pause(); /* wait for our turn */ |
| 783 |
< |
sigprocmask(SIG_BLOCK, &iomask, NULL); |
| 786 |
> |
if (inchild > 0) { /* children share stdout */ |
| 787 |
> |
i = getc(stdin); /* signals it's our turn */ |
| 788 |
> |
if (i != EOF) ungetc(i, stdin); |
| 789 |
|
} |
| 790 |
|
if (!rmx_write_data(res->rmp->mtx, res->rmp->ncomp, |
| 791 |
|
res->rmp->ncols, res->rmp->dtype, stdout)) |
| 792 |
|
return(0); |
| 793 |
< |
if (inchild >= 0) { /* flush and notify group */ |
| 794 |
< |
if (fflush(stdout) == EOF) |
| 790 |
< |
return(0); |
| 791 |
< |
sigprocmask(SIG_UNBLOCK, &iomask, NULL); |
| 792 |
< |
killpg(pgid, SIGIO); /* increments everyone's nr_out */ |
| 793 |
< |
} |
| 793 |
> |
if (inchild > 0 && fflush(stdout) == EOF) |
| 794 |
> |
return(0); |
| 795 |
|
} |
| 796 |
< |
return(inchild >= 0 || fflush(stdout) != EOF); |
| 796 |
> |
return(inchild > 0 || fflush(stdout) != EOF); |
| 797 |
|
memerror: |
| 798 |
|
fputs("Out of buffer space in combine_input()\n", stderr); |
| 799 |
|
return(0); |
| 924 |
|
if (n && !isflt(argv[i+1])) { |
| 925 |
|
mop[nmats].preop.csym = argv[++i]; |
| 926 |
|
mop[nmats].preop.clen = 0; |
| 927 |
+ |
mcat_last = 0; |
| 928 |
|
break; |
| 929 |
|
} |
| 930 |
|
if (n > MAXCOMP*MAXCOMP) n = MAXCOMP*MAXCOMP; |