--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/ThreadSubstitutions.java 2017-02-15 17:00:26.753452812 -0800 @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2012, 2016, 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. + */ +package org.graalvm.compiler.hotspot.replacements; + +import static org.graalvm.compiler.core.common.LocationIdentity.any; +import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_VMCONFIG; +import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.JAVA_THREAD_OSTHREAD_LOCATION; +import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.JAVA_THREAD_THREAD_OBJECT_LOCATION; +import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.osThreadInterruptedOffset; +import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.osThreadOffset; +import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.threadObjectOffset; + +import org.graalvm.compiler.api.replacements.ClassSubstitution; +import org.graalvm.compiler.api.replacements.MethodSubstitution; +import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; +import org.graalvm.compiler.graph.Node.ConstantNodeParameter; +import org.graalvm.compiler.graph.Node.NodeIntrinsic; +import org.graalvm.compiler.hotspot.nodes.CurrentJavaThreadNode; +import org.graalvm.compiler.nodes.extended.ForeignCallNode; +import org.graalvm.compiler.word.Word; + +/** + * Substitutions for {@link java.lang.Thread} methods. + */ +@ClassSubstitution(Thread.class) +public class ThreadSubstitutions { + + @MethodSubstitution(isStatic = false) + public static boolean isInterrupted(final Thread thisObject, boolean clearInterrupted) { + Word javaThread = CurrentJavaThreadNode.get(); + Object thread = javaThread.readObject(threadObjectOffset(INJECTED_VMCONFIG), JAVA_THREAD_THREAD_OBJECT_LOCATION); + if (thisObject == thread) { + Word osThread = javaThread.readWord(osThreadOffset(INJECTED_VMCONFIG), JAVA_THREAD_OSTHREAD_LOCATION); + boolean interrupted = osThread.readInt(osThreadInterruptedOffset(INJECTED_VMCONFIG), any()) != 0; + if (!interrupted || !clearInterrupted) { + return interrupted; + } + } + + return threadIsInterruptedStub(THREAD_IS_INTERRUPTED, thisObject, clearInterrupted); + } + + public static final ForeignCallDescriptor THREAD_IS_INTERRUPTED = new ForeignCallDescriptor("thread_is_interrupted", boolean.class, Thread.class, boolean.class); + + @NodeIntrinsic(ForeignCallNode.class) + private static native boolean threadIsInterruptedStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Thread thread, boolean clearIsInterrupted); +}