Mail Archives: cygwin/1998/11/08/11:05:23
Hi folks. I have some very peculiar problem, and i would really appreciate
any HELP.
I am using B20 + Sergey's X11R6.4 and coolview under Win98. I have a simple
program which forks a child process. The child process is working with
sockets. Immideatly after forking the child process dies dumping core (or
even worth: windows dialog like "this program has performed an illegal
operation ..."). The program works well under Linux, and it works well if I
don't use sockets in the child process. It also works well if I don't fork,
and use sockets directly in the parent process. Note that I am not using
Windows sockets but the ordinary UNIX sockets.
If any one can understand what's going on it will be great.
If it can help, here is an example of a main function, giving such a
behaviuor. This program "performs an illegal operation" just after the
hiting some key + enter for a first time, after what the parent process
which is stil alive asks to hit a key+enter for a second time.
int main() {
int i;
pid_t childpid;
char toto[20];
printf("Hit a key + Enter\n");
scanf("%s",toto);
signal (SIGCHLD,SIG_IGN);
if ((childpid = fork()) < 0) {
exit (1);
} else {
if (childpid == 0) {
while(1) {
XXXXXX();
}
} else {
printf("Hit a key + Enter\n");
scanf("%s",toto);
kill(childpid,SIGKILL);
exit (0);
}
}
}
Here XXXXXX() is some function using sockets.
Thaks in advance for any help.
___________________________________________________________________________
Serguei DACHIAN
Laboratoire de Statistique et Processus,
Universite du Maine, Av. Olivier Messiaen
72085 Le Mans CEDEX 9, FRANCE
Tel. : +33 (0)2 43 83 37 18
Fax. : +33 (0)2 43 83 35 79
E-mail : Serguei DOT Dachian AT univ-lemans DOT fr
WWW : http://www.univ-lemans.fr/sciences/statist/cvs/thesard.html#dachian
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