1 /* 2 * Copyright (c) 2011, 2016, 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 package org.graalvm.compiler.hotspot.test; 24 25 import static org.hamcrest.CoreMatchers.not; 26 import static org.junit.Assert.assertNotNull; 27 import static org.junit.Assert.assertNull; 28 import static org.junit.Assert.assertThat; 29 30 import java.util.Arrays; 31 import java.util.List; 32 33 import org.junit.Test; 34 35 import org.graalvm.compiler.code.CompilationResult; 36 import org.graalvm.compiler.core.test.GraalCompilerTest; 37 import org.graalvm.compiler.debug.DebugContext; 38 import org.graalvm.compiler.debug.GraalError; 39 40 import jdk.vm.ci.code.BytecodeFrame; 41 import jdk.vm.ci.code.InstalledCode; 42 import jdk.vm.ci.code.StackLockValue; 43 import jdk.vm.ci.code.site.Call; 44 import jdk.vm.ci.code.site.Infopoint; 45 import jdk.vm.ci.meta.ResolvedJavaMethod; 46 47 public class HotSpotMonitorValueTest extends GraalCompilerTest { 48 49 @Override 50 protected InstalledCode addMethod(DebugContext debug, ResolvedJavaMethod method, CompilationResult compResult) { 51 for (Infopoint i : compResult.getInfopoints()) { 52 if (i instanceof Call) { 53 Call call = (Call) i; 54 if (call.target instanceof ResolvedJavaMethod) { 55 ResolvedJavaMethod target = (ResolvedJavaMethod) call.target; 56 if (target.equals(lookupObjectWait())) { 57 BytecodeFrame frame = call.debugInfo.frame(); 58 BytecodeFrame caller = frame.caller(); 59 assertNotNull(caller); 60 assertNull(caller.caller()); 61 assertDeepEquals(2, frame.numLocks); 62 assertDeepEquals(2, caller.numLocks); 63 StackLockValue lock1 = (StackLockValue) frame.getLockValue(0); 64 StackLockValue lock2 = (StackLockValue) frame.getLockValue(1); 65 StackLockValue lock3 = (StackLockValue) caller.getLockValue(0); 66 StackLockValue lock4 = (StackLockValue) caller.getLockValue(1); 67 68 List<StackLockValue> locks = Arrays.asList(lock1, lock2, lock3, lock4); 69 for (StackLockValue lock : locks) { 70 for (StackLockValue other : locks) { 71 if (other != lock) { 72 // Every lock must have a different stack slot 73 assertThat(lock.getSlot(), not(other.getSlot())); 74 } 75 } 76 } 77 assertDeepEquals(lock3.getOwner(), lock4.getOwner()); 78 assertThat(lock1.getOwner(), not(lock2.getOwner())); 79 return super.addMethod(debug, method, compResult); 80 } 81 } 82 } 83 } 84 throw new AssertionError("Could not find debug info for call to Object.wait(long)"); 85 } 86 87 private ResolvedJavaMethod lookupObjectWait() { 88 try { 89 return getMetaAccess().lookupJavaMethod(Object.class.getDeclaredMethod("wait", long.class)); 90 } catch (Exception e) { 91 throw new GraalError("Could not find Object.wait(long): %s", e); 92 } 93 } 94 95 @Test 96 public void test() { 97 test("testSnippet", "a", "b"); 98 } 99 100 private static void locks2(Object a, Object b) throws InterruptedException { 101 synchronized (a) { 102 synchronized (b) { 103 a.wait(5); 104 } 105 } 106 } 107 108 public static void testSnippet(Object a, Object b) throws InterruptedException { 109 synchronized (a) { 110 synchronized (a) { 111 locks2(a, b); 112 } 113 } 114 } 115 }