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