fork() & wait() 1

[cmancre]

Hello
code:

while(condition){
pID=fork();
if(!pID){
/* do something */
exit(number);
}
}
wait(number);

Imagine that my while loop creats 4 childs processes. The execution time of each child are diferent, so child nº2 could end first than child nº1. My question is, how my parent process waits for all childs?

 

[sedj]

You need to wait (if you want to wait) for each child process - you cannot (well you can) wait for just one child and hope to catch the other three !

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[Salem]

Read the manual page for waitpid() and study which magic values allow you to wait for any child.

If you have 4 children, waitpid() 4 times.


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