275 lines
11 KiB
Java
275 lines
11 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @summary static initializer invocation order
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*
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* @build indify.Indify
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* @compile CallStaticInitOrder.java
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* @run main/othervm
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* indify.Indify
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* --expand-properties --classpath ${test.classes}
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* --java test.java.lang.invoke.CallStaticInitOrder
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*/
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package test.java.lang.invoke;
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import java.io.*;
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import java.lang.invoke.*;
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import static java.lang.invoke.MethodHandles.*;
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import static java.lang.invoke.MethodType.*;
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public class CallStaticInitOrder {
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private static int TICK;
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private static synchronized int tick(String event) {
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int n = ++TICK;
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System.out.println("event #"+n+" = "+event);
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return n;
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}
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static int Init1Tick;
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private static class Init1 {
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static { Init1Tick = tick("foo -> Init1.<clinit>"); }
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static int foo() { return Init1Tick; }
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}
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static int Init2Tick;
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private static class Init2 {
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static { Init2Tick = tick("bar -> Init2.<clinit>"); }
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static int bar() { return Init2Tick; }
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}
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static int Init3Tick;
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private static class Init3 {
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static { Init3Tick = tick("baz -> Init3.<clinit>"); }
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static int baz() { return Init3Tick; }
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}
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static int Init4Tick;
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private static class Init4 {
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static { Init4Tick = tick("bat -> Init4.<clinit>"); }
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static int bat() { return Init4Tick; }
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}
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static int Init5Tick;
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private static class Init5 {
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static { Init5Tick = tick("read bang -> Init5.<clinit>"); }
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static int bang = Init5Tick;
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}
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static int Init6Tick;
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private static class Init6 {
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static { Init6Tick = tick("write pong -> Init6.<clinit>"); }
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static int pong;
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}
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private static final MutableCallSite CONSTANT_CS_baz;
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private static MethodHandle MH_foo() throws ReflectiveOperationException {
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return lookup().findStatic(Init1.class, "foo", methodType(int.class));
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}
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private static final MethodHandle CONSTANT_MH_bar;
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private static MethodHandle MH_baz() throws ReflectiveOperationException {
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return lookup().findStatic(Init3.class, "baz", methodType(int.class));
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}
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private static final MethodHandle CONSTANT_MH_bat;
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private static final MethodHandle CONSTANT_MH_bangGetter;
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private static final MethodHandle CONSTANT_MH_pongSetter;
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static {
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try {
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int t1 = tick("CallStaticInitOrder.<clinit>");
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{
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CONSTANT_CS_baz = new MutableCallSite(methodType(int.class));
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// MH_foo() := lookup().findStatic(Init1.class, "foo", methodType(int.class));
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CONSTANT_MH_bar = lookup().findStatic(Init2.class, "bar", methodType(int.class));
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// MH_baz() := lookup().findStatic(Init3.class, "baz", methodType(int.class));
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CONSTANT_MH_bat = lookup().unreflect(Init4.class.getDeclaredMethod("bat"));
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CONSTANT_MH_bangGetter = lookup().findStaticGetter(Init5.class, "bang", int.class);
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MethodHandle pongSetter = lookup().findStaticSetter(Init6.class, "pong", int.class);
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MethodHandle tickGetter = lookup().findStaticGetter(CallStaticInitOrder.class, "Init6Tick", int.class);
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CONSTANT_MH_pongSetter = filterReturnValue(insertArguments(pongSetter, 0, -99), tickGetter);
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}
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int t2 = tick("CallStaticInitOrder.<clinit> done");
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assertEquals(t1+1, t2); // no ticks in between
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} catch (Exception ex) {
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throw new InternalError(ex.toString());
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}
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}
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public static void main(String... av) throws Throwable {
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testInit();
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if (LAST_LOSER != null) throw LAST_LOSER;
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}
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private static Throwable LAST_LOSER;
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private static void assertEquals(int expected, int actual) {
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if (expected != actual) {
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Throwable loser = new AssertionError("expected: " + expected + ", actual: " + actual);
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if (LAST_LOSER != null)
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LAST_LOSER.printStackTrace(System.out);
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LAST_LOSER = loser;
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}
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}
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private static void testInit() throws Throwable {
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System.out.println("runFoo = "+runFoo());
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System.out.println("runBar = "+runBar());
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try {
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runBaz();
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} catch (IllegalStateException ex) {
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tick("runBaz throw/catch");
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}
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CONSTANT_CS_baz.setTarget(MH_baz());
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System.out.println("runBaz = "+runBaz());
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System.out.println("runBat = "+runBat());
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System.out.println("runBang = "+runBang());
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System.out.println("runPong = "+runPong());
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}
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private static int runFoo() throws Throwable {
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assertEquals(Init1Tick, 0); // Init1 not initialized yet
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int t1 = tick("runFoo");
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int t2 = (int) INDY_foo().invokeExact();
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int t3 = tick("runFoo done");
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assertEquals(Init1Tick, t2); // when Init1 was initialized
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assertEquals(t1+2, t3); // exactly two ticks in between
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assertEquals(t1+1, t2); // init happened inside
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return t2;
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}
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private static MethodHandle INDY_foo() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invoke(lookup(), "foo", methodType(int.class))).dynamicInvoker();
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}
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private static int runBar() throws Throwable {
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assertEquals(Init2Tick, 0); // Init2 not initialized yet
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int t1 = tick("runBar");
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int t2 = (int) INDY_bar().invokeExact();
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int t3 = tick("runBar done");
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assertEquals(Init2Tick, t2); // when Init2 was initialized
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assertEquals(t1+2, t3); // exactly two ticks in between
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assertEquals(t1+1, t2); // init happened inside
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return t2;
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}
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private static MethodHandle INDY_bar() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invoke(lookup(), "bar", methodType(int.class))).dynamicInvoker();
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}
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private static int runBaz() throws Throwable {
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assertEquals(Init3Tick, 0); // Init3 not initialized yet
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int t1 = tick("runBaz");
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int t2 = (int) INDY_baz().invokeExact();
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int t3 = tick("runBaz done");
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assertEquals(Init3Tick, t2); // when Init3 was initialized
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assertEquals(t1+2, t3); // exactly two ticks in between
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assertEquals(t1+1, t2); // init happened inside
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return t2;
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}
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private static MethodHandle INDY_baz() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invoke(lookup(), "baz", methodType(int.class))).dynamicInvoker();
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}
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private static int runBat() throws Throwable {
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assertEquals(Init4Tick, 0); // Init4 not initialized yet
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int t1 = tick("runBat");
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int t2 = (int) INDY_bat().invokeExact();
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int t3 = tick("runBat done");
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assertEquals(Init4Tick, t2); // when Init4 was initialized
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assertEquals(t1+2, t3); // exactly two ticks in between
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assertEquals(t1+1, t2); // init happened inside
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return t2;
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}
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private static MethodHandle INDY_bat() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invoke(lookup(), "bat", methodType(int.class))).dynamicInvoker();
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}
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private static int runBang() throws Throwable {
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assertEquals(Init5Tick, 0); // Init5 not initialized yet
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int t1 = tick("runBang");
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int t2 = (int) INDY_bang().invokeExact();
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int t3 = tick("runBang done");
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assertEquals(Init5Tick, t2); // when Init5 was initialized
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assertEquals(t1+2, t3); // exactly two ticks in between
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assertEquals(t1+1, t2); // init happened inside
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return t2;
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}
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private static MethodHandle INDY_bang() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invoke(lookup(), "bang", methodType(int.class))).dynamicInvoker();
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}
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private static int runPong() throws Throwable {
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assertEquals(Init6Tick, 0); // Init6 not initialized yet
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int t1 = tick("runPong");
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int t2 = (int) INDY_pong().invokeExact();
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int t3 = tick("runPong done");
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assertEquals(Init6Tick, t2); // when Init6 was initialized
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assertEquals(t1+2, t3); // exactly two ticks in between
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assertEquals(t1+1, t2); // init happened inside
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return t2;
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}
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private static MethodHandle INDY_pong() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invoke(lookup(), "pong", methodType(int.class))).dynamicInvoker();
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}
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private static CallSite bsm(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
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System.out.println("bsm "+name+type);
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CallSite res;
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switch (name) {
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case "foo":
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res = new ConstantCallSite(MH_foo()); break;
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case "bar":
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res = new ConstantCallSite(CONSTANT_MH_bar); break;
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case "baz":
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res = CONSTANT_CS_baz; break;
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case "bat":
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res = new ConstantCallSite(CONSTANT_MH_bat); break;
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case "bang":
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res = new ConstantCallSite(CONSTANT_MH_bangGetter); break;
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case "pong":
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res = new ConstantCallSite(CONSTANT_MH_pongSetter); break;
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default:
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res = null;
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}
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if (res == null || !res.type().equals(type)) {
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throw new AssertionError(String.valueOf(res));
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}
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return res;
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}
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private static MethodHandle MH_bsm() throws ReflectiveOperationException {
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shouldNotCallThis();
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return lookup().findStatic(lookup().lookupClass(), "bsm",
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methodType(CallSite.class, Lookup.class, String.class, MethodType.class));
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}
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private static void shouldNotCallThis() {
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// if this gets called, the transformation has not taken place
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throw new AssertionError("this code should be statically transformed away by Indify");
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}
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}
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