package com.comphenix.testing;

import com.comphenix.testing.BlockChangeArray.BlockChange;

import com.google.caliper.Runner;
import com.google.caliper.SimpleBenchmark;

/*
 * RESULT:
 *
 *  0% Scenario{vm=java, trial=0, benchmark=Normal} 2,87 ns; ?=0,02 ns @ 3 trials
 *  50% Scenario{vm=java, trial=0, benchmark=Recycle} 3,33 ns; ?=0,23 ns @ 10 trials
 *
 *  benchmark   ns linear runtime
 *     Normal 2,87 =========================
 *    Recycle 3,33 ==============================
 *
 *  vm: java
 *  trial: 0
 */

class Test {
    public static class Benchmark extends SimpleBenchmark {
        private BlockChangeArray array = new BlockChangeArray(100);

        public int timeNormal(int reps) {
            for (int i = 0; i < reps; i++) {
                BlockChange change = array.getBlockChange(i % 100);
                change.setBlockID(change.getBlockID() + 1);
            }
            return array.getBlockChange(0).getBlockID();
        }

        public int timeRecycle(int reps) {
            BlockChange reused = null;

            for (int i = 0; i < reps; i++) {
                reused = array.getBlockChange(i % 100, reused);
                reused.setBlockID(reused.getBlockID() + 1);
            }
            return array.getBlockChange(0).getBlockID();
        }
    }

    public static void main(String[] args) throws Exception {
        Runner.main(Benchmark.class, args);
    }
}