1 /* 2 * Copyright (c) 2012, 2019, 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.replacements; 26 27 import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_VMCONFIG; 28 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.JAVA_THREAD_OSTHREAD_LOCATION; 29 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.JAVA_THREAD_THREAD_OBJECT_LOCATION; 30 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.osThreadInterruptedOffset; 31 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.osThreadOffset; 32 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.threadObjectOffset; 33 import static jdk.internal.vm.compiler.word.LocationIdentity.any; 34 35 import org.graalvm.compiler.api.replacements.ClassSubstitution; 36 import org.graalvm.compiler.api.replacements.MethodSubstitution; 37 import org.graalvm.compiler.hotspot.nodes.CurrentJavaThreadNode; 38 import org.graalvm.compiler.word.Word; 39 40 /** 41 * Substitutions for {@link java.lang.Thread} methods. 42 */ 43 @ClassSubstitution(Thread.class) 44 public class ThreadSubstitutions { 45 46 /** 47 * hidden in 9. 48 */ 49 @MethodSubstitution(isStatic = false, optional = true) isInterrupted(final Thread thisObject, boolean clearInterrupted)50 public static boolean isInterrupted(final Thread thisObject, boolean clearInterrupted) { 51 Word javaThread = CurrentJavaThreadNode.get(); 52 Object thread = javaThread.readObject(threadObjectOffset(INJECTED_VMCONFIG), JAVA_THREAD_THREAD_OBJECT_LOCATION); 53 if (thisObject == thread) { 54 Word osThread = javaThread.readWord(osThreadOffset(INJECTED_VMCONFIG), JAVA_THREAD_OSTHREAD_LOCATION); 55 boolean interrupted = osThread.readInt(osThreadInterruptedOffset(INJECTED_VMCONFIG), any()) != 0; 56 if (!interrupted || !clearInterrupted) { 57 return interrupted; 58 } 59 } 60 return isInterrupted(thisObject, clearInterrupted); 61 } 62 } 63