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.junit.Rule; 30 import org.junit.Test; 31 import org.junit.rules.TestRule; 32 33 import jdk.vm.ci.code.InstalledCode; 34 import jdk.vm.ci.code.InvalidInstalledCodeException; 35 import jdk.vm.ci.code.stack.InspectedFrame; 36 import jdk.vm.ci.code.stack.StackIntrospection; 37 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime; 38 import jdk.vm.ci.meta.ResolvedJavaMethod; 39 40 /** 41 * Create a single object which is referenced from a local, the expression stack and the lock state 42 * and then ensure that identity is maintained when the frame is forced to be materialized by 43 * {@link InspectedFrame#materializeVirtualObjects(boolean)}. 44 */ 45 public class HotSpotStackIntrospectionTest extends HotSpotGraalCompilerTest { 46 47 @Rule public TestRule timeout = createTimeoutSeconds(20); 48 49 static StackIntrospection stackIntrospection = HotSpotJVMCIRuntime.runtime().getHostJVMCIBackend().getStackIntrospection(); 50 static volatile int v; 51 52 public static void testSynchronizedSnippet(Function<Void, Void> f) { 53 Object a = new Object(); 54 synchronized (a) { 55 testOnStack(a, forceFrameState(a, f), a); 56 // This object should be locked so try to notify on it 57 a.notify(); 58 } 59 } 60 61 public static void testSnippet(Function<Void, Void> f) { 62 Object a = new Object(); 63 testOnStack(a, forceFrameState(a, f), a); 64 } 65 66 private static void testOnStack(Object a, Object a2, Object a3) { 67 if (a != a2 || a != a3) { 68 throw new InternalError(); 69 } 70 } 71 72 private static Object forceFrameState(Object a, Function<Void, Void> f) { 73 // Use a volatile store to ensure a FrameState is captured after this point. 74 v++; 75 f.apply(null); 76 return a; 77 } 78 79 @Test 80 public void run() throws InvalidInstalledCodeException { 81 test("testSnippet"); 82 } 83 84 @Test 85 public void runSynchronized() throws InvalidInstalledCodeException { 86 test("testSynchronizedSnippet"); 87 } 88 89 private void test(String name) throws InvalidInstalledCodeException { 90 ResolvedJavaMethod method = getMetaAccess().lookupJavaMethod(getMethod(name)); 91 Function<Void, Void> f = o -> { 92 stackIntrospection.iterateFrames(null, null, 0, frame -> { 93 if (frame.getMethod().equals(method)) { 94 frame.materializeVirtualObjects(true); 95 } 96 return null; 97 }); 98 return null; 99 }; 100 InstalledCode code = getCode(method); 101 code.executeVarargs(f); 102 } 103 104 }