Add perf test to compare 8u31 vs 8u40

Author: winterbe

res/nashorn9.js

@@ -0,0 +1,9 @@
+var size = 100000;
+
+var testPerf = function () {
+ var result = Math.floor(Math.random() * size) + 1;
+ for (var i = 0; i < size; i++) {
+ result += i;
+ }
+ return result;
+};

src/com/winterbe/java8/Nashorn9.java

@@ -0,0 +1,31 @@
+package com.winterbe.java8;
+
+import jdk.nashorn.api.scripting.NashornScriptEngine;
+
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @author Benjamin Winterberg
+ */
+public class Nashorn9 {
+
+ public static void main(String[] args) throws ScriptException, NoSuchMethodException {
+ NashornScriptEngine engine = (NashornScriptEngine) new ScriptEngineManager().getEngineByName("nashorn");
+ engine.eval("load('res/nashorn9.js')");
+
+ long t0 = System.nanoTime();
+
+ double result = 0;
+ for (int i = 0; i < 1000; i++) {
+ double num = (double) engine.invokeFunction("testPerf");
+ result += num;
+ }
+
+ System.out.println(result > 0);
+
+ long took = System.nanoTime() - t0;
+ System.out.format("Elapsed time: %d ms", TimeUnit.NANOSECONDS.toMillis(took));
+ }
+}