Provided by: systemtap-doc_2.3-1ubuntu1.4_all bug

NAME
       function::stp_pid - The process id of the stapio process


SYNOPSIS
           stp_pid:long()


ARGUMENTS
       None


DESCRIPTION
       This function returns the process id of the stapio process that launched this script.
       There could be other SystemTap scripts and stapio processes running on the system.