global output_string

# Parent probes
probe process(@1).mark("main")
{
	output_string .= sprintf("parent - pid: %d\n", $arg1)
}
probe process(@1).mark("child")
{
	output_string .= sprintf("parent - child pid before exec: %d\n", $arg1)
}
probe process(@1).mark("child_pid")
{
	output_string .= sprintf("parent - child pid: %d\n", $arg1)
}
probe process(@1).mark("finished")
{
	output_string .= sprintf("parent - finished\n")
	exit()
}

# Child probes
probe process(@2).mark("main")
{
	output_string .= sprintf("child - pid: %d\n", $arg1)
}

# Testsuite glue
probe begin
{
	printf("systemtap starting probe\n");
}

probe end
{
	printf("systemtap ending probe\n");
	printf("%s", output_string);
}
