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/*
* Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @summary smoke tests for CallSite
*
* @build indify.Indify
* @compile CallSiteTest.java
* @run main/othervm/timeout=3600 -XX:+IgnoreUnrecognizedVMOptions -XX:-VerifyDependencies
* indify.Indify
* --expand-properties --classpath ${test.classes}
* --java test.java.lang.invoke.CallSiteTest
*/
package test.java.lang.invoke;
import java.io.*;
import java.lang.invoke.*;
import static java.lang.invoke.MethodHandles.*;
import static java.lang.invoke.MethodType.*;
public class CallSiteTest {
private static final Class<?> CLASS = CallSiteTest.class;
private static CallSite mcs;
private static CallSite vcs;
private static MethodHandle mh_foo;
private static MethodHandle mh_bar;
static {
try {
mh_foo = lookup().findStatic(CLASS, "foo", methodType(int.class, int.class, int.class));
mh_bar = lookup().findStatic(CLASS, "bar", methodType(int.class, int.class, int.class));
mcs = new MutableCallSite(mh_foo);
vcs = new VolatileCallSite(mh_foo);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String... av) throws Throwable {
testMutableCallSite();
testVolatileCallSite();
}
private static final int N = Integer.MAX_VALUE / 100;
private static final int RESULT1 = 762786192;
private static final int RESULT2 = -21474836;
private static void assertEquals(int expected, int actual) {
if (expected != actual)
throw new AssertionError("expected: " + expected + ", actual: " + actual);
}
private static void testMutableCallSite() throws Throwable {
// warm-up
for (int i = 0; i < 20000; i++) {
mcs.setTarget(mh_foo);
}
// run
for (int n = 0; n < 2; n++) {
mcs.setTarget(mh_foo);
for (int i = 0; i < 5; i++) {
assertEquals(RESULT1, runMutableCallSite());
}
mcs.setTarget(mh_bar);
for (int i = 0; i < 5; i++) {
assertEquals(RESULT2, runMutableCallSite());
}
}
}
private static void testVolatileCallSite() throws Throwable {
// warm-up
for (int i = 0; i < 20000; i++) {
vcs.setTarget(mh_foo);
}
// run
for (int n = 0; n < 2; n++) {
vcs.setTarget(mh_foo);
for (int i = 0; i < 5; i++) {
assertEquals(RESULT1, runVolatileCallSite());
}
vcs.setTarget(mh_bar);
for (int i = 0; i < 5; i++) {
assertEquals(RESULT2, runVolatileCallSite());
}
}
}
private static int runMutableCallSite() throws Throwable {
int sum = 0;
for (int i = 0; i < N; i++) {
sum += (int) INDY_mcs().invokeExact(i, i+1);
}
return sum;
}
private static int runVolatileCallSite() throws Throwable {
int sum = 0;
for (int i = 0; i < N; i++) {
sum += (int) INDY_vcs().invokeExact(i, i+1);
}
return sum;
}
static int foo(int a, int b) { return a + b; }
static int bar(int a, int b) { return a - b; }
private static MethodType MT_bsm() {
shouldNotCallThis();
return methodType(CallSite.class, Lookup.class, String.class, MethodType.class);
}
private static CallSite bsm_mcs(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
return mcs;
}
private static MethodHandle MH_bsm_mcs() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findStatic(lookup().lookupClass(), "bsm_mcs", MT_bsm());
}
private static MethodHandle INDY_mcs() throws Throwable {
shouldNotCallThis();
return ((CallSite) MH_bsm_mcs().invoke(lookup(), "foo", methodType(int.class, int.class, int.class))).dynamicInvoker();
}
private static CallSite bsm_vcs(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
return vcs;
}
private static MethodHandle MH_bsm_vcs() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findStatic(lookup().lookupClass(), "bsm_vcs", MT_bsm());
}
private static MethodHandle INDY_vcs() throws Throwable {
shouldNotCallThis();
return ((CallSite) MH_bsm_vcs().invoke(lookup(), "foo", methodType(int.class, int.class, int.class))).dynamicInvoker();
}
private static void shouldNotCallThis() {
// if this gets called, the transformation has not taken place
throw new AssertionError("this code should be statically transformed away by Indify");
}
}
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