Runninc sunspider benchmarks to compare Rhino and V8 performance

gistfile1.txt

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.script.Compilable;
import javax.script.CompiledScript;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

import lu.flier.script.V8Array;

import org.apache.commons.io.FileUtils;


public class V8Test {

	public static void main(String[] args) throws Exception {
		ScriptEngineManager factory = new ScriptEngineManager();

		ScriptEngine v8xx = factory.getEngineByName("jav8");
		
		ScriptEngine v8engine = factory.getEngineByName("jav8");
		ScriptEngine rhinoengine = factory.getEngineByName("rhino");
		
		
		System.err.println("V8   :" + v8engine);
		System.err.println("Rhino:" + rhinoengine);
		
		String input1 = FileUtils.readFileToString(new File("sunspider-test-prefix.js"));
		String input2 = FileUtils.readFileToString(new File("sunspider-test-contents.js"));
		
		v8xx.eval(input1);
		v8xx.eval(input2);
		v8xx.eval("testContents").getClass();
		
		V8Array tests = (V8Array)v8xx.eval("tests");
		V8Array testContents = (V8Array)v8xx.eval("testContents");

		List<String> scriptSources = new ArrayList<String>();
		for(int i=0; i<tests.size();i++) {
			String testName = (String)tests.get(i);
			String testScript = (String)testContents.get(i);
			
			Pattern p = Pattern.compile("var _sunSpiderStartDate = new Date\\(\\);(.*?)var _sunSpiderInterval = new Date\\(\\) - _sunSpiderStartDate;",Pattern.DOTALL | Pattern.MULTILINE);
			Matcher m = p.matcher(testScript);
			m.find();
			testScript = m.group(1);
			scriptSources.add(testScript);
			
		}

		System.err.println("");
		int c = 0;
		for(String scriptSource : scriptSources) {
			Compilable compilable = (Compilable) rhinoengine;
			CompiledScript script = compilable.compile(scriptSource);
			
			System.err.println("Running script nr " + tests.get(c++));
			long before, after;
			Object res;
			
			before = System.nanoTime();
			res = v8engine.eval(scriptSource);
			after = System.nanoTime();
			
			System.err.println("V8   : "  +((after-before)/1000/1000)+" ms");
			
			before = System.nanoTime();
			res = script.eval();
			after = System.nanoTime();
			System.err.println("Rhino: " +((after-before)/1000/1000)+" ms");
			System.err.println("");
		}
	}
}