Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/CLHSDB.java @ 17495:16e0c6c84a91
8031553: new hotspot build - hs25-b67
Reviewed-by: jcoomes
author | amurillo |
---|---|
date | Mon, 13 Jan 2014 16:00:46 -0800 |
parents | 55fb97c4c58d |
children | 4ca6dc0799b6 |
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/* * Copyright (c) 2005, 2013, 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 sun.jvm.hotspot; import sun.jvm.hotspot.*; import sun.jvm.hotspot.debugger.*; import java.io.*; import java.util.*; public class CLHSDB { public CLHSDB(JVMDebugger d) { jvmDebugger = d; } public static void main(String[] args) { new CLHSDB(args).run(); } public void run() { // If jvmDebugger is already set, we have been given a JVMDebugger. // Otherwise, if pidText != null we are supposed to attach to it. // Finally, if execPath != null, it is the path of a jdk/bin/java // and coreFilename is the pathname of a core file we are // supposed to attach to. agent = new HotSpotAgent(); Runtime.getRuntime().addShutdownHook(new java.lang.Thread() { public void run() { detachDebugger(); } }); if (jvmDebugger != null) { attachDebugger(jvmDebugger); } else if (pidText != null) { attachDebugger(pidText); } else if (execPath != null) { attachDebugger(execPath, coreFilename); } CommandProcessor.DebuggerInterface di = new CommandProcessor.DebuggerInterface() { public HotSpotAgent getAgent() { return agent; } public boolean isAttached() { return attached; } public void attach(String pid) { attachDebugger(pid); } public void attach(String java, String core) { attachDebugger(java, core); } public void detach() { detachDebugger(); } public void reattach() { if (attached) { detachDebugger(); } if (pidText != null) { attach(pidText); } else { attach(execPath, coreFilename); } } }; BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); CommandProcessor cp = new CommandProcessor(di, in, System.out, System.err); cp.run(true); } //-------------------------------------------------------------------------------- // Internals only below this point // private HotSpotAgent agent; private JVMDebugger jvmDebugger; private boolean attached; // These had to be made data members because they are referenced in inner classes. private String pidText; private int pid; private String execPath; private String coreFilename; private void doUsage() { System.out.println("Usage: java CLHSDB [[pid] | [path-to-java-executable [path-to-corefile]] | help ]"); System.out.println(" pid: attach to the process whose id is 'pid'"); System.out.println(" path-to-java-executable: Debug a core file produced by this program"); System.out.println(" path-to-corefile: Debug this corefile. The default is 'core'"); System.out.println(" If no arguments are specified, you can select what to do from the GUI.\n"); HotSpotAgent.showUsage(); } private CLHSDB(String[] args) { switch (args.length) { case (0): break; case (1): if (args[0].equals("help") || args[0].equals("-help")) { doUsage(); return; } // If all numbers, it is a PID to attach to // Else, it is a pathname to a .../bin/java for a core file. try { int unused = Integer.parseInt(args[0]); // If we get here, we have a PID and not a core file name pidText = args[0]; } catch (NumberFormatException e) { execPath = args[0]; coreFilename = "core"; } break; case (2): execPath = args[0]; coreFilename = args[1]; break; default: System.out.println("HSDB Error: Too many options specified"); doUsage(); return; } } private void attachDebugger(JVMDebugger d) { agent.attach(d); attached = true; } /** NOTE we are in a different thread here than either the main thread or the Swing/AWT event handler thread, so we must be very careful when creating or removing widgets */ private void attachDebugger(String pidText) { try { this.pidText = pidText; pid = Integer.parseInt(pidText); } catch (NumberFormatException e) { System.err.print("Unable to parse process ID \"" + pidText + "\".\nPlease enter a number."); } try { System.err.println("Attaching to process " + pid + ", please wait..."); // FIXME: display exec'd debugger's output messages during this // lengthy call agent.attach(pid); attached = true; } catch (DebuggerException e) { final String errMsg = formatMessage(e.getMessage(), 80); System.err.println("Unable to connect to process ID " + pid + ":\n\n" + errMsg); agent.detach(); e.printStackTrace(); return; } } /** NOTE we are in a different thread here than either the main thread or the Swing/AWT event handler thread, so we must be very careful when creating or removing widgets */ private void attachDebugger(final String executablePath, final String corePath) { // Try to open this core file try { System.err.println("Opening core file, please wait..."); // FIXME: display exec'd debugger's output messages during this // lengthy call agent.attach(executablePath, corePath); attached = true; } catch (DebuggerException e) { final String errMsg = formatMessage(e.getMessage(), 80); System.err.println("Unable to open core file\n" + corePath + ":\n\n" + errMsg); agent.detach(); e.printStackTrace(); return; } } /** NOTE we are in a different thread here than either the main thread or the Swing/AWT event handler thread, so we must be very careful when creating or removing widgets */ private void connect(final String remoteMachineName) { // Try to open this core file try { System.err.println("Connecting to debug server, please wait..."); agent.attach(remoteMachineName); attached = true; } catch (DebuggerException e) { final String errMsg = formatMessage(e.getMessage(), 80); System.err.println("Unable to connect to machine \"" + remoteMachineName + "\":\n\n" + errMsg); agent.detach(); e.printStackTrace(); return; } } private void detachDebugger() { if (!attached) { return; } agent.detach(); attached = false; } private void detach() { detachDebugger(); } /** Punctuates the given string with \n's where necessary to not exceed the given number of characters per line. Strips extraneous whitespace. */ private String formatMessage(String message, int charsPerLine) { StringBuffer buf = new StringBuffer(message.length()); StringTokenizer tokenizer = new StringTokenizer(message); int curLineLength = 0; while (tokenizer.hasMoreTokens()) { String tok = tokenizer.nextToken(); if (curLineLength + tok.length() > charsPerLine) { buf.append('\n'); curLineLength = 0; } else { if (curLineLength != 0) { buf.append(' '); ++curLineLength; } } buf.append(tok); curLineLength += tok.length(); } return buf.toString(); } }