The waitpid function : waitpid « System Functions « Perl

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Perl » System Functions » waitpid 




The waitpid function
     

#!/usr/bin/perl
use warnings;
use strict;

my $pid, $pid2 );
$| = 1;

if ( ( $pid = fork() ) && $pid2 = fork() ) ) {
   print"I have to wait for my kids.\n" );
   my $straggler = waitpid$pid, );
   print"Finally $straggler finished, now I can go.\n" );
}
elsif $pid && defined$pid2 ) ) {
   print"Kid 2: Mine is not...\n" );
   print"Kid 2: Hey! Wait for me!!!\n" );
   exit();
}
elsif defined$pid ) ) {
   print"Kid 1: My parent is very patient...\n" );
}
else {
   die"Forking problems: " );
}

   
    
    
    
    
  














Related examples in the same category
1.Using waitpid.
2.waitpid waits for a particular child process to complete, returning 1 if the process is found and -1 on an error.
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