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// NB: functionally equivalent to linux/target_set.stp

@__private30 global _target_set # map: target-set-pid -> ancestor-pid

function target_set_pid (pid)
{
	return ([pid] in _target_set)
}

probe init
{
	if (target())
		_target_set[target()] = stp_pid()
}

probe process.begin
{
	// NB: by definition, every process we see in stapdyn is part of the
	// target set, so we don't need to filter like linux/target_set.stp.
	_target_set[pid()] = ppid()
}

probe process.end
{
	delete _target_set[pid()]
}

function target_set_report ()
{
	printf("target set:\n")
	foreach (pid in _target_set+)
		printf("%d begat %d\n", _target_set[pid], pid)
}