perl-example.stp

/*
    Example of the perl systemtap tapset shows a nested view of perl subroutine
    calls and returns across the whole system.

    To run:
        stap perl-example.stp (for all perl processes)
    For specific perl process:
        stap perl-example.stp -c COMMAND
*/

probe perl.sub.call
{
    printf("%s => sub: %s, filename: %s, line: %d\n", thread_indent(1),
        sub, filename, lineno)
}

probe perl.sub.return
{
    printf("%s <= sub: %s, filename: %s, line: %d\n",
        thread_indent(-1), sub, filename, lineno)
}