1 /* 2 * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package org.graalvm.compiler.hotspot.test; 26 27 import java.util.function.Function; 28 29 import org.graalvm.compiler.test.GraalTest; 30 import org.junit.Assume; 31 import org.junit.Rule; 32 import org.junit.Test; 33 import org.junit.rules.TestRule; 34 35 import jdk.vm.ci.code.InstalledCode; 36 import jdk.vm.ci.code.InvalidInstalledCodeException; 37 import jdk.vm.ci.code.stack.InspectedFrame; 38 import jdk.vm.ci.code.stack.StackIntrospection; 39 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime; 40 import jdk.vm.ci.meta.ResolvedJavaMethod; 41 42 /** 43 * Create a single object which is referenced from a local, the expression stack and the lock state 44 * and then ensure that identity is maintained when the frame is forced to be materialized by 45 * {@link InspectedFrame#materializeVirtualObjects(boolean)}. 46 */ 47 public class HotSpotStackIntrospectionTest extends HotSpotGraalCompilerTest { 48 49 @Rule public TestRule timeout = createTimeoutSeconds(20); 50 51 static StackIntrospection stackIntrospection = HotSpotJVMCIRuntime.runtime().getHostJVMCIBackend().getStackIntrospection(); 52 static volatile int v; 53 54 public static void testSynchronizedSnippet(Function<Void, Void> f) { 55 Object a = new Object(); 56 synchronized (a) { 57 testOnStack(a, forceFrameState(a, f), a); 58 // This object should be locked so try to notify on it 59 a.notify(); 60 } 61 } 62 63 public static void testSnippet(Function<Void, Void> f) { 64 Object a = new Object(); 65 testOnStack(a, forceFrameState(a, f), a); 66 } 67 68 private static void testOnStack(Object a, Object a2, Object a3) { 69 if (a != a2 || a != a3) { 70 throw new InternalError(); 71 } 72 } 73 74 private static Object forceFrameState(Object a, Function<Void, Void> f) { 75 // Use a volatile store to ensure a FrameState is captured after this point. 76 v++; 77 f.apply(null); 78 return a; 79 } 80 81 @Test 82 public void run() throws InvalidInstalledCodeException { 83 // The JDK9 bits are currently broken 84 Assume.assumeTrue(GraalTest.Java8OrEarlier); 85 test("testSnippet"); 86 } 87 88 @Test 89 public void runSynchronized() throws InvalidInstalledCodeException { 90 // The JDK9 bits are currently broken 91 Assume.assumeTrue(GraalTest.Java8OrEarlier); 92 test("testSynchronizedSnippet"); 93 } 94 95 private void test(String name) throws InvalidInstalledCodeException { 96 ResolvedJavaMethod method = getMetaAccess().lookupJavaMethod(getMethod(name)); 97 Function<Void, Void> f = o -> { 98 stackIntrospection.iterateFrames(null, null, 0, frame -> { 99 if (frame.getMethod().equals(method)) { 100 frame.materializeVirtualObjects(true); 101 } 102 return null; 103 }); 104 return null; 105 }; 106 InstalledCode code = getCode(method); 107 code.executeVarargs(f); 108 } 109 110 }