import com.github.mustachejava.codegen.CodegenObjectHandler;
import com.github.mustachejava.codegen.CodegenReflectionWrapper;
import com.github.mustachejava.indy.IndyObjectHandler;
import com.github.mustachejava.indy.IndyWrapper;
import com.github.mustachejava.reflect.ReflectionObjectHandler;
import com.github.mustachejava.util.Wrapper;
import org.junit.Test;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.Method;
public class IndyDemo {
public static final int TIMES = 100000000;
public static void main(String[] args) throws Throwable {
IndyDemo indyDemo = new IndyDemo();
for (int i = 0; i < 10; i++) {
timeReflectionOH(indyDemo);
timeCodegenReflectionOH(indyDemo);
timeIndy(indyDemo);
timeIndyNoGuard(indyDemo);
timeIndyOH(indyDemo);
timeReflection(indyDemo);
timeReflectionCached(indyDemo);
timeUnReflection(indyDemo);
timeUnReflectionCached(indyDemo);
timeMH(indyDemo);
timeMHCached(indyDemo);
timeDirect(indyDemo);
System.out.println("-----------------");
}
}
public static void timeReflectionOH(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
Object[] scopes = {indyDemo};
for (int i = 0; i < TIMES; i++) {
REFLECTED.call(scopes);
}
System.out.println("reflection OH: " + (System.currentTimeMillis() - start));
}
public static void timeCodegenReflectionOH(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
Object[] scopes = {indyDemo};
for (int i = 0; i < TIMES; i++) {
CODEGEN_REFLECTED.call(scopes);
}
System.out.println("codegen reflection OH: " + (System.currentTimeMillis() - start));
}
@Test
public void timeIndyOH() throws Throwable {
for (int i = 0; i < 10; i++) {
timeIndy(new IndyDemo());
}
}
@Test
public void timeReflectionOH() throws Throwable {
for (int i = 0; i < 10; i++) {
timeReflectionOH(new IndyDemo());
}
}
public static void timeIndy(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
Object[] scopes = {indyDemo};
for (int i = 0; i < TIMES; i++) {
INDY.call(scopes);
}
System.out.println("indy wrapper: " + (System.currentTimeMillis() - start));
}
public static void timeIndyNoGuard(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
Object[] scopes = {indyDemo};
for (int i = 0; i < TIMES; i++) {
INDY_NOGUARD.call(scopes);
}
System.out.println("indy wrapper no guard: " + (System.currentTimeMillis() - start));
}
public static void timeIndyOH(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
Object[] scopes = {indyDemo};
for (int i = 0; i < TIMES; i++) {
INDY_OH.call(scopes);
}
System.out.println("indy OH: " + (System.currentTimeMillis() - start));
}
public static void timeReflection(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
int REFLECTION_TIMES = 10000000;
for (int i = 0; i < REFLECTION_TIMES; i++) {
IndyDemo.class.getDeclaredMethod("someMethod").invoke(indyDemo);
}
System.out.println("reflection: " + (TIMES/ REFLECTION_TIMES)*(System.currentTimeMillis() - start));
}
public static void timeReflectionCached(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
Method someMethod = IndyDemo.class.getDeclaredMethod("someMethod");
for (int i = 0; i < TIMES; i++) {
someMethod.invoke(indyDemo);
}
System.out.println("reflection cached: " + (System.currentTimeMillis() - start));
}
public static void timeUnReflection(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
int REFLECTION_TIMES = 10000;
MethodHandles.Lookup lookup = MethodHandles.lookup();
for (int i = 0; i < REFLECTION_TIMES; i++) {
int result = (int) lookup.unreflect(IndyDemo.class.getDeclaredMethod("someMethod")).invokeExact(indyDemo);
}
System.out.println("unreflection: " + (TIMES/ REFLECTION_TIMES)*(System.currentTimeMillis() - start));
}
public static void timeUnReflectionCached(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
MethodHandles.Lookup lookup = MethodHandles.lookup();
MethodHandle someMethod = lookup.unreflect(IndyDemo.class.getDeclaredMethod("someMethod"));
for (int i = 0; i < TIMES; i++) {
int result = (int) someMethod.invokeExact(indyDemo);
}
System.out.println("unreflection cached: " + (System.currentTimeMillis() - start));
}
public static void timeMH(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
int REFLECTION_TIMES = 10000;
MethodHandles.Lookup lookup = MethodHandles.lookup();
MethodType type = MethodType.methodType(Integer.TYPE);
for (int i = 0; i < REFLECTION_TIMES; i++) {
MethodHandle someMethod = lookup.findVirtual(IndyDemo.class, "someMethod", type);
int result = (int) someMethod.invokeExact(indyDemo);
}
System.out.println("methodhandle: " + (TIMES/ REFLECTION_TIMES)*(System.currentTimeMillis() - start));
}
public static void timeMHCached(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
MethodHandles.Lookup lookup = MethodHandles.lookup();
MethodType type = MethodType.methodType(Integer.TYPE);
MethodHandle someMethod = lookup.findVirtual(IndyDemo.class, "someMethod", type);
for (int i = 0; i < TIMES; i++) {
int result = (int) someMethod.invokeExact(indyDemo);
}
System.out.println("methodhandle cached: " + (System.currentTimeMillis() - start));
}
public static void timeDirect(IndyDemo indyDemo) throws Throwable {
long start = System.currentTimeMillis();
for (int i = 0; i < TIMES; i++) {
indyDemo.someMethod();
}
System.out.println("direct: " + (System.currentTimeMillis() - start));
}
private static Wrapper REFLECTED;
private static Wrapper INDY;
private static IndyWrapper INDY_NOGUARD;
private static Wrapper CODEGEN_REFLECTED;
private static final Wrapper INDY_OH;
static {
IndyDemo indyDemo = new IndyDemo();
REFLECTED = new ReflectionObjectHandler().find("someMethod", new Object[] { indyDemo });
CODEGEN_REFLECTED = new CodegenObjectHandler().find("someMethod", new Object[] { indyDemo });
INDY = IndyWrapper.create((CodegenReflectionWrapper) CODEGEN_REFLECTED);
INDY_NOGUARD = IndyWrapper.create((CodegenReflectionWrapper) CODEGEN_REFLECTED, false);
INDY_OH = new IndyObjectHandler().find("someMethod", new Object[] { indyDemo });
}
private int length = 0;
public int someMethod() {
return length++;
}
}