2 Hook to invoke when there's nothing left on the runnable threads
3 queue {\em and} we've got nothing to wait for. The value
4 returned is the exit code to report back.
6 NOTE: This hook is really CONCURRENT specific, but we include
7 it in the way-independent libHSclib.a.
13 NoRunnableThreadsHook (void)
16 fprintf(stderr, "No runnable threads!\n");