Hello All,

I Am forking child processes. I am waiting for them to finish in parent. If you see my code What I want to parent is not to move forward until it get info from each child. Next portion of the code is dependent on the status of the child. I want to do kind of wait in a loop in parent and keep checking for the child's response. Here is my problem I am not able to do it last logic. Please help me with suggestions. 

#!/usr/local/bin/perl -w
use strict;
use warnings;
use Net::Telnet;
use IO::Socket::INET;

my $IsParent             = 1;
my $ListenPort           = 5000;
my $PPID = $$;


print "I am the only process.\n";
my @children_pids;


for my $count (1..3){
 
        my $child_pid = fork();
        if ($child_pid) {  # If I have a child PID, then I must be the
+ parent
                push @children_pids, $child_pid;
        }
        else { # I am the child
                # close the sides of the pipes not used by the child
                my $end;
                local $SIG{HUP} = sub { $end = 1 };
                my $Child_PID = $$;
                print "\n============================== \n";
                print "CHILD's PID is: $Child_PID \n";
                my $db1 = ConnectToServer('127.0.0.1',$ListenPort,60);
                local $SIG{HUP} = sub { $end = 1 };
                #Do something and then write to DB as done
                WriteValueToDB('done',$db1,$Child_PID . '_Status');
                until ($end) {
                  #print "Sleep 1\n";
                  sleep 1;
               }
               print "============================== \n";
               function2();
        }
}

foreach my $child (@children_pids) {
        print "Parent: Waiting on $child\n";
        sleep 5;       
        waitpid($child, 0); 
}

# HERE I WANT TO GET THE STATUS OF ALL THE KIDS BECAUSE FROM HERE IT D
+EPENDS ON EACH RESULT FURTHER PROCESSING. WAIT IN A LOOP OR SOMTETHIN
+G
# NOT GETTING IT HOW TO DO IT. I DON'T WANT TO CONTINUE UNLESS I GET A
+LL KIDS STATUS. DON'T WANT TO GO TO END DB MAIN UNLESS I GET ALL CHIL
+D PROCESSES STATUS.

# my $localtime = localtime;
# my $child_stat = ReadValue($child . '_Status',$dbmain);
# accoding to the result in DB decide to kill it
#print "$child CHILD STAT: $child_stat \n"; 
#kill HUP => $child;

print "END DB MAIN: $dbmain \n";
KillServer($dbmain);
print "All done.\n";

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In reply to How to make parent wait for all the child processes. by gjoshi

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