countdown.d

Sun Solaris 10 中的 DTrace 组件的源代码。请参看: http://www.sun.com/software/solaris/observability.jsp

dtrace:::BEGIN
{
	i = 10;
}

profile:::tick-1sec
/i > 0/
{
	trace(i--);
}

profile:::tick-1sec
/i == 0/
{
	trace("blastoff!");
	exit(0);
}