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<DIV>Hello All,</DIV>
<DIV> </DIV>
<DIV>the following is a handler for SIGCHLD signal in a program.</DIV>
<DIV>this function was written to prevent zombies and to terminate the </DIV>
<DIV>child by catching the SIGCHLD.</DIV>
<DIV> </DIV>
<DIV>void sig_chld()</DIV>
<DIV>{</DIV>
<DIV> pid_t pid;</DIV>
<DIV> int stat;</DIV>
<DIV> </DIV>
<DIV> pid=wait(&stat);</DIV>
<DIV> printf("child %d terminated \n",pid);</DIV>
<DIV> return ; </DIV>
<DIV>}</DIV>
<DIV> </DIV>
<DIV>now, i want to know what happens when " pid=wait(&stat) "
statement</DIV>
<DIV>executes. how the child terminates (without becoming a zombie) . what is
</DIV>
<DIV>the significance of "&stat ".</DIV>
<DIV>also in case of waitpid(-1,&stat, WNOHNG) --what happens here</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Thanks </DIV>
<DIV>Srinath</DIV></FONT></DIV></BODY></HTML>