| /* |
| * Copyright (c) 1998, 2002, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 com.sun.tools.example.debug.bdi; |
| |
| import com.sun.jdi.*; |
| import java.util.List; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| |
| //### Should handle target VM death or connection failure cleanly. |
| |
| public class ThreadInfo { |
| |
| private ThreadReference thread; |
| private int status; |
| |
| private int frameCount; |
| |
| Object userObject; // User-supplied annotation. |
| |
| private boolean interrupted = false; |
| |
| private void assureInterrupted() throws VMNotInterruptedException { |
| if (!interrupted) { |
| throw new VMNotInterruptedException(); |
| } |
| } |
| |
| ThreadInfo (ThreadReference thread) { |
| this.thread = thread; |
| this.frameCount = -1; |
| } |
| |
| public ThreadReference thread() { |
| return thread; |
| } |
| |
| public int getStatus() throws VMNotInterruptedException { |
| assureInterrupted(); |
| update(); |
| return status; |
| } |
| |
| public int getFrameCount() throws VMNotInterruptedException { |
| assureInterrupted(); |
| update(); |
| return frameCount; |
| } |
| |
| public StackFrame getFrame(int index) throws VMNotInterruptedException { |
| assureInterrupted(); |
| update(); |
| try { |
| return thread.frame(index); |
| } catch (IncompatibleThreadStateException e) { |
| // Should not happen |
| interrupted = false; |
| throw new VMNotInterruptedException(); |
| } |
| } |
| |
| public Object getUserObject() { |
| return userObject; |
| } |
| |
| public void setUserObject(Object obj) { |
| userObject = obj; |
| } |
| |
| // Refresh upon first access after cache is cleared. |
| |
| void update() throws VMNotInterruptedException { |
| if (frameCount == -1) { |
| try { |
| status = thread.status(); |
| frameCount = thread.frameCount(); |
| } catch (IncompatibleThreadStateException e) { |
| // Should not happen |
| interrupted = false; |
| throw new VMNotInterruptedException(); |
| } |
| } |
| } |
| |
| // Called from 'ExecutionManager'. |
| |
| void validate() { |
| interrupted = true; |
| } |
| |
| void invalidate() { |
| interrupted = false; |
| frameCount = -1; |
| status = ThreadReference.THREAD_STATUS_UNKNOWN; |
| } |
| |
| } |