Wed, 07 Apr 2010 12:30:49 -0700 martin 6941130: Semaphore should throw if number of permits overflows or underflows
(0) -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip