package org.simantics.db.tests.performance.java;

import gnu.trove.map.hash.TIntByteHashMap;

import java.util.TreeMap;

import org.simantics.db.testing.base.TestCommonPerf;


public class MapTest extends TestCommonPerf {

	public void a(TIntByteHashMap map, int i) {
		byte test = (byte)i;
		byte value = map.get(test);
		if(value == 0) {
			map.put(test, value);
		}
	}
	
	public void b(TreeMap<Integer, Byte> map2, int i) {
		Byte value = map2.get(i);
		if(value == null) {
			map2.put(i, value);
		}
	}

	public void test() throws Exception {

		TIntByteHashMap map = new TIntByteHashMap();
		
		long start = System.nanoTime();
		for(int i=0;i<12000000;i++) {
			byte test = (byte)i;
			byte value = map.get(test);
			if(value == 0) {
				map.put(test, value);
			}
		}
		long duration = System.nanoTime() - start;
		System.err.println("took " + 1e-9*duration);

		TIntByteHashMap map2 = new TIntByteHashMap();
		long start2 = System.nanoTime();
		for(int i=0;i<10000000;i++) a(map2, i);
		long duration2 = System.nanoTime() - start2;
		System.err.println("took " + 1e-9*duration2);
		
		TreeMap<Integer, Byte> map3 = new TreeMap<Integer, Byte>();
		long start3 = System.nanoTime();
		for(int i=0;i<10000000;i++) {
			Byte value = map3.get(i);
			if(value == null) {
				map3.put(i, value);
			}
		}
		long duration3 = System.nanoTime() - start3;
		System.err.println("took " + 1e-9*duration3);

		TreeMap<Integer, Byte> map4 = new TreeMap<Integer, Byte>();
		long start4 = System.nanoTime();
		for(int i=0;i<10000000;i++) b(map4, i);
		long duration4 = System.nanoTime() - start4;
		System.err.println("took " + 1e-9*duration4);
		
	}

}