Re: Re: Re: Perl IPC: Checking Exit Status of Child Process

Just call fork() as many times as you need...

# Create 10 child processes
for (1..10){
   my $pid = fork();
   last unless defined $pid;  # Too many processes already?
   unless($pid){
      # Child code here
      exit;
   }
}

# wait() for kids
while(($pid = wait()) > 0){
   # Check $? here
}
[download]

--perlplexer

Comment on Re: Re: Re: Perl IPC: Checking Exit Status of Child Process Download Code

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Re: Re: Re: Re: Perl IPC: Checking Exit Status of Child Process by bayruds (Acolyte) on May 19, 2003 at 03:24 UTC
Hi Thank you very much for replying back. When I fork in a loop, how do I ensure that all the child processes are executing concurrently. My main aim to use fork is to execute different subroutines in a cincurrent fashion. Many thanks for your help.	[reply]
Re: Perl IPC: Checking Exit Status of Child Process by perlplexer (Hermit) on May 19, 2003 at 11:33 UTC
fork() creates a new process, so, as long as you have enough CPU power, all fork()ed processes may be executing concurrently. I say "may be" because it really depends on what they do, on their priority in the system, and on the number of CPUs that the OS has at its disposal. --perlplexer	[reply]