package com.aviyehuda.tests.arraycopy;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

public class ArrayCopyTestActivity extends Activity {
    private static final int SIZE_OF_ARRAY = 1000000;
	private long time;

	/** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Integer [] sourceArray = new Integer[SIZE_OF_ARRAY];
        Integer [] dst = new Integer[SIZE_OF_ARRAY];
        fillArray(sourceArray);
        
        startBenchmark();
        naiveCopy(sourceArray,dst);
        stopBenchmark();
        
        
       
        startBenchmark();
        System.arraycopy(sourceArray, 0, dst, 0, sourceArray.length);
        stopBenchmark();
    }



	private void naiveCopy(Integer [] src, Integer [] dst) {
		for (int i = 0; i < src.length; i++) {
			dst[i]=src[i];
		}
		
	}

	private void fillArray(Integer [] src) {
		for (int i = 0; i < src.length; i++) {
			src[i]=i;
		}
		
	}
	
	private void startBenchmark() {
		time = System.currentTimeMillis();
	}
	
	private void stopBenchmark() {
		time = System.currentTimeMillis() - time;
		Log.d("array copy test", "time="+time);
		
	}
}