From: Tanaka Akira <akr@...17n.org>
Date: 2001-04-12T16:04:59+09:00
Subject: [ruby-dev:12900] Re: recursive malloc / fork deadlock / thread deadlock

In article <20010412151116K.gotoyuzo@does.notwork.org>,
  GOTOU Yuuzou <gotoyuzo@notwork.org> writes:

> FreeBSD $B$N<BAu$G$O(B $B%5%$%:$,(B 0 $B$N>l9g$OFbIt$G(B BUFSIZ $BJ,(B
> $B$N%P%C%U%!$r3NJ]$9$k$h$&$K$J$C$F$k$_$?$$$J$N$G!"$=$l$H(B
> $BF1$88z2L$,F@$i$l$k$H;W$C$?$N$G$9$,!"IT;W5D$G$9!#(B

$B$A$J$_$K(B stdio $B$OI,$:$7$b(B BUFSIZ $B$J%P%C%U%!$r;H$&$H$O8B$i$J$$$HJ9$$$?(B
$B$3$H$,$"$j$^$9!#(Bfile system $B$N(B blocksize $B$N%P%C%U%!$r;H$&$H$+!#(B

$B$?$@!"(BFreeBSD 4.2 $B$G(B /dev/zero $B$N>l9g$O(B BUFSIZ $B$HF1$8$J$N$G!"(B/dev/zero
$B$N>l9g$NB.EYDc2<$O$3$l$G$O@bL@$G$-$J$$$N$G$9$,!#(B

% cat a.c              
#include <stdio.h>
 
int main(int argc, char **argv)
{
  int i;
  printf("BUFSIZ: %d\n", BUFSIZ);
  for (i = 1; i < argc; i++) {
    FILE *fp = fopen(argv[i], "r");
    if (fp == NULL) {
      perror("fopen");
      continue;
    }
    getc(fp);
    printf("buffer size: %d\n", fp->_bf._size);
    fclose(fp);
  }
  return 0;
}
% ./a.out /dev/zero a.c
BUFSIZ: 1024
buffer size: 1024
buffer size: 8192
% 
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)