1 /* 2 * Copyright (c) 2004, 2013, 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 sun.jvm.hotspot.runtime; 26 27 import java.util.*; 28 import sun.jvm.hotspot.debugger.*; 29 import sun.jvm.hotspot.types.*; 30 31 // The OSThread class holds OS-specific thread information. It is equivalent 32 // to the sys_thread_t structure of the classic JVM implementation. 33 public class OSThread extends VMObject { 34 private static JIntField interruptedField; 35 private static JIntField threadIdField; 36 static { 37 VM.registerVMInitializedObserver(new Observer() { 38 public void update(Observable o, Object data) { 39 initialize(VM.getVM().getTypeDataBase()); 40 } 41 }); 42 } 43 44 private static synchronized void initialize(TypeDataBase db) { 45 Type type = db.lookupType("OSThread"); 46 interruptedField = type.getJIntField("_interrupted"); 47 threadIdField = type.getJIntField("_thread_id"); 48 } 49 50 public OSThread(Address addr) { 51 super(addr); 52 } 53 54 public boolean interrupted() { 55 return ((int)interruptedField.getValue(addr)) != 0; 56 } 57 58 public int threadId() { 59 return (int)threadIdField.getValue(addr); 60 } 61 62 }