#!/usr/bin/stap -v
/*
    Example usage of the Python systemtap tapset to show a nested view of all
    Python function calls (and returns) across the whole system.

    Run this using
        stap systemtap-example.stp
    to instrument all Python processes on the system, or (for example) using
        stap systemtap-example.stp -c COMMAND
    to instrument a specific program (implemented in Python)
*/
probe python.function.entry
{
 if ( filename =~ "random" )
  printf("%s => %s in %s:%d\n", thread_indent(1), funcname, filename, lineno);
}

probe python.function.return
{
 if ( filename =~ "random" )
  printf("%s <= %s in %s:%d\n", thread_indent(-1), funcname, filename, lineno);
}