static void nashornCompiledScript(String code) throws ScriptException, NoSuchMethodException {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("nashorn");
CompiledScript compiled = ((Compilable) engine).compile(code);
Object result = null;
ScriptContext context = new SimpleScriptContext();
Bindings engineScope = context.getBindings(ScriptContext.ENGINE_SCOPE);
long total = 0;
for (int i = 0; i < RUNS; ++i) {
long start = System.nanoTime();
for (int j = 0; j < BATCH; ++j) {
engineScope.put("value", "12345678");
result = compiled.eval(context);
}
long stop = System.nanoTime();
System.out.println(
"Run "
+ (i * BATCH + 1)
+ "-"
+ ((i + 1) * BATCH)
+ ": "
+ Math.round((stop - start) / BATCH / 1000)
+ " us");
total += (stop - start);
}
System.out.println("Average run: " + Math.round(total / RUNS / BATCH / 1000) + " us");
System.out.println(
"Data is " + ((Invocable) engine).invokeMethod(result, "toString").toString());
}
static void nashornCompiledScriptReturningFunction(String code, String library)
throws ScriptException, NoSuchMethodException {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("nashorn");
ScriptContext libraryContext = new SimpleScriptContext();
ScriptContext privateContext = new SimpleScriptContext();
ScriptObjectMirror errorFunc =
(ScriptObjectMirror) ((Compilable) engine).compile(library).eval(libraryContext);
ScriptObjectMirror func =
(ScriptObjectMirror) ((Compilable) engine).compile(code).eval(privateContext);
Object result = null;
long total = 0;
for (int i = 0; i < RUNS; ++i) {
long start = System.nanoTime();
for (int j = 0; j < BATCH; ++j) {
result = func.call(null, "12345678", errorFunc);
}
long stop = System.nanoTime();
System.out.println(
"Run "
+ (i * BATCH + 1)
+ "-"
+ ((i + 1) * BATCH)
+ ": "
+ Math.round((stop - start) / BATCH / 1000)
+ " us");
total += (stop - start);
}
System.out.println("Average run: " + Math.round(total / RUNS / BATCH / 1000) + " us");
System.out.println("Data is " + result.toString());
}
static void nashornInvokeMethod(String code) throws ScriptException, NoSuchMethodException {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("nashorn");
engine.eval(code);
Invocable inv = (Invocable) engine;
JSObject propertiesDict = (JSObject) engine.get("properties");
Object result = null;
Object property;
long total = 0;
for (int i = 0; i < RUNS; ++i) {
long start = System.nanoTime();
for (int j = 0; j < BATCH; ++j) {
property = propertiesDict.getMember("ssn");
result = inv.invokeMethod(property, "clean", "12345678");
}
long stop = System.nanoTime();
System.out.println(
"Run "
+ (i * BATCH + 1)
+ "-"
+ ((i + 1) * BATCH)
+ ": "
+ Math.round((stop - start) / BATCH / 1000)
+ " us");
total += (stop - start);
}
System.out.println("Average run: " + Math.round(total / RUNS / BATCH / 1000) + " us");
System.out.println(
"Data is " + ((Invocable) engine).invokeMethod(result, "toString").toString());
}