1 /* 2 * Copyright (c) 2002, 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 sun.jvm.hotspot.debugger.linux; 26 27 import sun.jvm.hotspot.debugger.*; 28 29 class LinuxThread implements ThreadProxy { 30 private LinuxDebugger debugger; 31 private int lwp_id; 32 33 /** The address argument must be the address of the _thread_id in the 34 OSThread. It's value is result ::gettid() call. */ 35 LinuxThread(LinuxDebugger debugger, Address addr) { 36 this.debugger = debugger; 37 // FIXME: size of data fetched here should be configurable. 38 // However, making it so would produce a dependency on the "types" 39 // package from the debugger package, which is not desired. 40 int pid = (int)addr.getCIntegerAt(0, 4, true); 41 if (debugger instanceof LinuxDebuggerLocal) { 42 int hostPID = ((LinuxDebuggerLocal)debugger).getHostPID(pid); 43 if (hostPID != -1) { 44 pid = hostPID; 45 } 46 } 47 this.lwp_id = pid; 48 49 } 50 51 LinuxThread(LinuxDebugger debugger, long id) { 52 this.debugger = debugger; 53 this.lwp_id = (int) id; 54 } 55 56 public boolean equals(Object obj) { 57 if ((obj == null) || !(obj instanceof LinuxThread)) { 58 return false; 59 } 60 61 return (((LinuxThread) obj).lwp_id == lwp_id); 62 } 63 64 public int hashCode() { 65 return lwp_id; 66 } 67 68 public String toString() { 69 return Integer.toString(lwp_id); 70 } 71 72 public ThreadContext getContext() throws IllegalThreadStateException { 73 long[] data = debugger.getThreadIntegerRegisterSet(lwp_id); 74 ThreadContext context = LinuxThreadContextFactory.createThreadContext(debugger); 75 for (int i = 0; i < data.length; i++) { 76 context.setRegister(i, data[i]); 77 } 78 return context; 79 } 80 81 public boolean canSetContext() throws DebuggerException { 82 return false; 83 } 84 85 public void setContext(ThreadContext context) 86 throws IllegalThreadStateException, DebuggerException { 87 throw new DebuggerException("Unimplemented"); 88 } 89 }