BlackHole.consumeCPU

[Ruslan Cheremin]

consumeCPU(0) supposed to consume nothing. But in my version (1.0-snapshot?)

    public static volatile long consumedCPU = 42;
    public static void consumeCPU(long tokens) {
        // randomize start so that JIT could not memoize;
        long t = consumedCPU;

        for (long i = 0; i < tokens; i++) {
            t += (t * 0x5DEECE66DL + 0xBL) & (0xFFFFFFFFFFFFL);
        }

        if (t == 42) {
            consumedCPU += t;
        }
    }

Clearly, first call _will_ do the write. It is not a big deal, usually
covered by warmup, but could shift short benchmarks a little. Doesn't 43 a
better choice for initial value? :)