[This is a second post, since I didn't get any replies the first time.
It looks more like a bug now, which sounds strange for something that
common...]
When I run the following program, and block the terminal's output
(C-s), the `select' doesn't seem to have any effect, resulting in a
100% cpu usage (this is on a RH8, with 2.4.18). I wouldn't be
surprised if I'm doing something stupid, but it does seem to work fine
on Solaris.
Is there anything wrong with this, or is this some bug?
======================================================================
#include <unistd.h>
#include <fcntl.h>
int main() {
int flags, fd, len; fd_set writefds;
fd = 1;
flags = fcntl(fd, F_GETFL, 0);
fcntl(fd, F_SETFL, flags | O_NONBLOCK);
while (1) {
FD_ZERO(&writefds);
FD_SET(fd, &writefds);
len = select(fd + 1, NULL, &writefds, NULL, NULL);
if (!FD_ISSET(fd,&writefds)) exit(0);
len = write(fd, "hi\n", 3);
}
fcntl(fd, F_SETFL, flags);
}
======================================================================
--
((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay:
http://www.barzilay.org/ Maze is Life!
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:22 EST