Hi All,

Question 1: I have a huge text file (50MB approx) and I need to parse it once in a process and pass the duplicate content to another one. I have a sample code to parse a file but how can I duplicate the output is where I am stuck. 
sub processInputFiles
{
    <----doing something--->.....
    ......
    LogInfoMsg("Processing $file Started");
    if ($f_type eq ".gz") 
    {
    $fp= new IO::Zlib($working_file,"rb");
    $tfp= new IO::Zlib($working_file,"rb");
    }
    elsif ($f_type eq ".log")
    {
    $fp= new IO::File($working_file,"r");
    $tfp= new IO::File($working_file,"r");
    }
    else
    {
        LogCriticalMsg("Unsupported file_type($f_type), Skip parsing $
+file.");
        return;
    }

    if (! $fp) 
    {
        # if it fails for some reason, rename to its original name.
        rename ($working_file, $file);
        LogCriticalMsg("Open input file $file failed. $!");
    }
    else 
    {
        if(grep m/[\r]/,$line)
        {
            IO::File->input_record_separator("\r\n\r\n");    
        }
        else
        {
                IO::File->input_record_separator("\n\n");    
        }
        close($tfp);
    }

        while ($record= $fp->getline())
        {
            <---parsing file per record---->              
        }# end of while
     }
}    
  <----doing something--->

[download]
the code may have errors but what I want is the concept to duplicate data in two or more processes (forking) so that I parse the input file only once. The input file can be huge so cant store in some variable or array or hash.

Question 2: which will be faster parsing the input huge file in two different processes or parsing it once and send the data to different processes record by record?

In reply to passing a file content from one process to another process. by avanta

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