public static void runInstrumentedManyTimes(final MultithreadedTestCase test, int count, 
			int[] failureCount) throws Throwable {
		int failures = 0;
		Throwable t = null;
		boolean failed = false;
		
		System.out.println("Testing " + test.getClass());
		
		for (int i = 0; i < count; i++) {
			try {
				runOnce(test);
			} catch (Throwable e) {
				failed = true;
				failures++;
				if (t == null)
					t = e;
			}
			if (i%10 == 9) {
				if (failed) { System.out.print("f"); failed=false; }
				else System.out.print(".");
				if (i%100 == 99) System.out.println(" " + (i+1));
			}
		}
		if (failureCount != null && failureCount.length > 0) 
			failureCount[0] = failures;
		if (t != null)
			throw t;
	}