Dear Monks,

In the below code,the $extflag i am setting to 1 inside parent process,but in the child process the same flag is still available as 0 and the while loop is getting executed infinite loop,So even the $extflag is a global variable it is acting like a local variable.

Can Anyone please let me know how can i avoid the while loop getting executed infiniteThe code is given below. 
$extflag=0;
print"Flag outside loop=> $extflag\n";
if(defined($pid = fork))  {
      if ( $pid )  {
        print"PARENT PROCESS\n";
        $extflag=1;
        print"Flag inside paretn=> $extflag\n";

  waitpid ($pid,0);
      }
      else {
        print"CHILD PROCESS\n";
          sleep 10;
  while(!$extflag){
        
        print"Flag inside while child > $extflag\n";
  }
print"Flag outide while in cheild=> $extflag\n";
}
}

[download]
Regards,
madtoperl

In reply to Global variable acts like local variable why? by madtoperl

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