| /* |
| * Copyright (c) 2015, 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 |
| * @bug 8072008 |
| * @library /testlibrary /test/lib / ../patches |
| * @modules java.base/jdk.internal.misc |
| * java.base/jdk.internal.vm.annotation |
| * |
| * @build java.base/java.lang.invoke.MethodHandleHelper |
| * sun.hotspot.WhiteBox |
| * compiler.jsr292.NonInlinedCall.InvokeTest |
| * @run main/bootclasspath/othervm -XX:+IgnoreUnrecognizedVMOptions |
| * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI |
| * -Xbatch -XX:-TieredCompilation -XX:CICompilerCount=1 |
| * compiler.jsr292.NonInlinedCall.InvokeTest |
| */ |
| |
| package compiler.jsr292.NonInlinedCall; |
| |
| import jdk.internal.vm.annotation.DontInline; |
| import sun.hotspot.WhiteBox; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandleHelper; |
| import java.lang.invoke.MethodHandleHelper.NonInlinedReinvoker; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.invoke.MethodType; |
| |
| import static jdk.test.lib.Asserts.assertEquals; |
| |
| public class InvokeTest { |
| static MethodHandles.Lookup LOOKUP = MethodHandleHelper.IMPL_LOOKUP; |
| |
| static final MethodHandle virtualMH; // invokevirtual T.f1 |
| static final MethodHandle staticMH; // invokestatic T.f2 |
| static final MethodHandle intfMH; // invokeinterface I.f1 |
| static final MethodHandle specialMH; // invokespecial T.f4 T |
| static final MethodHandle basicMH; |
| |
| static final WhiteBox WB = WhiteBox.getWhiteBox(); |
| |
| static volatile boolean doDeopt = false; |
| |
| static { |
| try { |
| MethodType mtype = MethodType.methodType(Class.class); |
| |
| virtualMH = LOOKUP.findVirtual(T.class, "f1", mtype); |
| staticMH = LOOKUP.findStatic (T.class, "f2", mtype); |
| intfMH = LOOKUP.findVirtual(I.class, "f3", mtype); |
| specialMH = LOOKUP.findSpecial(T.class, "f4", mtype, T.class); |
| basicMH = NonInlinedReinvoker.make(staticMH); |
| } catch (Exception e) { |
| throw new Error(e); |
| } |
| } |
| |
| static class T implements I { |
| @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimizeAll(); return T.class; } |
| @DontInline public static Class<?> f2() { if (doDeopt) WB.deoptimizeAll(); return T.class; } |
| @DontInline private Class<?> f4() { if (doDeopt) WB.deoptimizeAll(); return T.class; } |
| } |
| |
| static class P1 extends T { |
| @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimizeAll(); return P1.class; } |
| @DontInline public Class<?> f3() { if (doDeopt) WB.deoptimizeAll(); return P1.class; } |
| } |
| |
| static class P2 extends T { |
| @DontInline public Class<?> f1() { if (doDeopt) WB.deoptimizeAll(); return P2.class; } |
| @DontInline public Class<?> f3() { if (doDeopt) WB.deoptimizeAll(); return P2.class; } |
| } |
| |
| static interface I { |
| @DontInline default Class<?> f3() { if (doDeopt) WB.deoptimizeAll(); return I.class; } |
| } |
| |
| @DontInline |
| static void linkToVirtual(Object obj, Class<?> extecpted) { |
| try { |
| Class<?> cls = (Class<?>)virtualMH.invokeExact((T)obj); |
| assertEquals(cls, obj.getClass()); |
| } catch (Throwable e) { |
| throw new Error(e); |
| } |
| } |
| |
| @DontInline |
| static void linkToInterface(Object obj, Class<?> expected) { |
| try { |
| Class<?> cls = (Class<?>)intfMH.invokeExact((I)obj); |
| assertEquals(cls, expected); |
| } catch (Throwable e) { |
| throw new Error(e); |
| } |
| } |
| |
| @DontInline |
| static void linkToStatic() { |
| try { |
| Class<?> cls = (Class<?>)staticMH.invokeExact(); |
| assertEquals(cls, T.class); |
| } catch (Throwable e) { |
| throw new Error(e); |
| } |
| } |
| |
| @DontInline |
| static void linkToSpecial(Object obj, Class<?> expected) { |
| try { |
| Class<?> cls = (Class<?>)specialMH.invokeExact((T)obj); |
| assertEquals(cls, expected); |
| } catch (Throwable e) { |
| throw new Error(e); |
| } |
| } |
| |
| @DontInline |
| static void invokeBasic() { |
| try { |
| Class<?> cls = (Class<?>)MethodHandleHelper.invokeBasicL(basicMH); |
| assertEquals(cls, T.class); |
| } catch (Throwable e) { |
| throw new Error(e); |
| } |
| } |
| |
| static void run(Runnable r) { |
| for (int i = 0; i < 20_000; i++) { |
| r.run(); |
| } |
| |
| doDeopt = true; |
| r.run(); |
| doDeopt = false; |
| |
| WB.clearInlineCaches(); |
| |
| for (int i = 0; i < 20_000; i++) { |
| r.run(); |
| } |
| |
| doDeopt = true; |
| r.run(); |
| doDeopt = false; |
| } |
| |
| static void testVirtual() { |
| System.out.println("linkToVirtual"); |
| |
| // Monomorphic case (optimized virtual call) |
| run(() -> linkToVirtual(new T(), T.class)); |
| |
| // Megamorphic case (virtual call) |
| Object[] recv = new Object[] { new T(), new P1(), new P2() }; |
| run(() -> { |
| for (Object r : recv) { |
| linkToVirtual(r, r.getClass()); |
| }}); |
| } |
| |
| static void testInterface() { |
| System.out.println("linkToInterface"); |
| |
| // Monomorphic case (optimized virtual call), concrete target method |
| run(() -> linkToInterface(new P1(), P1.class)); |
| |
| // Monomorphic case (optimized virtual call), default target method |
| run(() -> linkToInterface(new T(), I.class)); |
| |
| // Megamorphic case (virtual call) |
| Object[][] recv = new Object[][] {{new T(), I.class}, {new P1(), P1.class}, {new P2(), P2.class}}; |
| run(() -> { |
| for (Object[] r : recv) { |
| linkToInterface(r[0], (Class<?>)r[1]); |
| }}); |
| } |
| |
| static void testSpecial() { |
| System.out.println("linkToSpecial"); |
| // Monomorphic case (optimized virtual call) |
| run(() -> linkToSpecial(new T(), T.class)); |
| } |
| |
| static void testStatic() { |
| System.out.println("linkToStatic"); |
| // static call |
| run(() -> linkToStatic()); |
| } |
| |
| static void testBasic() { |
| System.out.println("invokeBasic"); |
| // static call |
| run(() -> invokeBasic()); |
| } |
| |
| public static void main(String[] args) { |
| testVirtual(); |
| testInterface(); |
| testSpecial(); |
| testStatic(); |
| testBasic(); |
| } |
| } |