author | jbachorik |
Tue, 29 Apr 2014 11:15:21 +0200 | |
changeset 24125 | b85eeaae56c7 |
parent 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
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/* |
23010
6dadb192ad81
8029235: Update copyright year to match last edit in jdk8 jdk repository for 2013
lana
parents:
17484
diff
changeset
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.tools.jdi; |
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import com.sun.tools.jdi.*; |
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import com.sun.jdi.connect.*; |
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import com.sun.jdi.connect.spi.*; |
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import com.sun.jdi.*; |
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import java.util.Map; |
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import java.util.StringTokenizer; |
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import java.util.List; |
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import java.util.ArrayList; |
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import java.io.IOException; |
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import java.io.InterruptedIOException; |
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abstract class AbstractLauncher extends ConnectorImpl implements LaunchingConnector { |
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abstract public VirtualMachine |
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launch(Map<String,? extends Connector.Argument> arguments) |
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throws IOException, |
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IllegalConnectorArgumentsException, |
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VMStartException; |
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abstract public String name(); |
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abstract public String description(); |
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ThreadGroup grp; |
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AbstractLauncher() { |
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super(); |
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grp = Thread.currentThread().getThreadGroup(); |
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ThreadGroup parent = null; |
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while ((parent = grp.getParent()) != null) { |
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grp = parent; |
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} |
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} |
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String[] tokenizeCommand(String command, char quote) { |
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String quoteStr = String.valueOf(quote); // easier to deal with |
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/* |
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* Tokenize the command, respecting the given quote character. |
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*/ |
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StringTokenizer tokenizer = new StringTokenizer(command, |
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quote + " \t\r\n\f", |
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true); |
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String quoted = null; |
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String pending = null; |
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List<String> tokenList = new ArrayList<String>(); |
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while (tokenizer.hasMoreTokens()) { |
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String token = tokenizer.nextToken(); |
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if (quoted != null) { |
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if (token.equals(quoteStr)) { |
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tokenList.add(quoted); |
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quoted = null; |
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} else { |
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quoted += token; |
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} |
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} else if (pending != null) { |
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if (token.equals(quoteStr)) { |
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quoted = pending; |
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} else if ((token.length() == 1) && |
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Character.isWhitespace(token.charAt(0))) { |
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tokenList.add(pending); |
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} else { |
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throw new InternalException("Unexpected token: " + token); |
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} |
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pending = null; |
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} else { |
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if (token.equals(quoteStr)) { |
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quoted = ""; |
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} else if ((token.length() == 1) && |
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Character.isWhitespace(token.charAt(0))) { |
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// continue |
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} else { |
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pending = token; |
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} |
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} |
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} |
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/* |
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* Add final token. |
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*/ |
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if (pending != null) { |
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tokenList.add(pending); |
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} |
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/* |
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* An unclosed quote at the end of the command. Do an |
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* implicit end quote. |
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*/ |
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if (quoted != null) { |
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tokenList.add(quoted); |
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} |
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String[] tokenArray = new String[tokenList.size()]; |
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for (int i = 0; i < tokenList.size(); i++) { |
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tokenArray[i] = tokenList.get(i); |
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} |
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return tokenArray; |
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} |
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protected VirtualMachine launch(String[] commandArray, String address, |
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TransportService.ListenKey listenKey, |
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TransportService ts) |
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throws IOException, VMStartException { |
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Helper helper = new Helper(commandArray, address, listenKey, ts); |
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helper.launchAndAccept(); |
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VirtualMachineManager manager = |
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Bootstrap.virtualMachineManager(); |
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return manager.createVirtualMachine(helper.connection(), |
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helper.process()); |
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} |
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/** |
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* This class simply provides a context for a single launch and |
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* accept. It provides instance fields that can be used by |
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* all threads involved. This stuff can't be in the Connector proper |
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* because the connector is a singleton and is not specific to any |
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* one launch. |
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*/ |
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private class Helper { |
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private final String address; |
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private TransportService.ListenKey listenKey; |
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private TransportService ts; |
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private final String[] commandArray; |
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private Process process = null; |
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private Connection connection = null; |
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private IOException acceptException = null; |
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private boolean exited = false; |
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Helper(String[] commandArray, String address, TransportService.ListenKey listenKey, |
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TransportService ts) { |
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this.commandArray = commandArray; |
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this.address = address; |
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this.listenKey = listenKey; |
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this.ts = ts; |
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} |
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String commandString() { |
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String str = ""; |
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for (int i = 0; i < commandArray.length; i++) { |
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if (i > 0) { |
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str += " "; |
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} |
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str += commandArray[i]; |
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} |
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return str; |
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} |
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synchronized void launchAndAccept() throws |
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IOException, VMStartException { |
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process = Runtime.getRuntime().exec(commandArray); |
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Thread acceptingThread = acceptConnection(); |
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Thread monitoringThread = monitorTarget(); |
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try { |
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while ((connection == null) && |
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(acceptException == null) && |
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!exited) { |
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wait(); |
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} |
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if (exited) { |
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throw new VMStartException( |
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"VM initialization failed for: " + commandString(), process); |
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} |
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if (acceptException != null) { |
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// Rethrow the exception in this thread |
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throw acceptException; |
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} |
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} catch (InterruptedException e) { |
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throw new InterruptedIOException("Interrupted during accept"); |
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} finally { |
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acceptingThread.interrupt(); |
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monitoringThread.interrupt(); |
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} |
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} |
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Process process() { |
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return process; |
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} |
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Connection connection() { |
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return connection; |
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} |
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synchronized void notifyOfExit() { |
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exited = true; |
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notify(); |
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} |
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synchronized void notifyOfConnection(Connection connection) { |
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this.connection = connection; |
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notify(); |
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} |
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synchronized void notifyOfAcceptException(IOException acceptException) { |
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this.acceptException = acceptException; |
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notify(); |
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} |
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Thread monitorTarget() { |
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Thread thread = new Thread(grp, |
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"launched target monitor") { |
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public void run() { |
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try { |
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process.waitFor(); |
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/* |
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* Notify waiting thread of VM error termination |
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*/ |
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notifyOfExit(); |
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} catch (InterruptedException e) { |
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// Connection has been established, stop monitoring |
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} |
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} |
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}; |
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thread.setDaemon(true); |
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thread.start(); |
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return thread; |
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} |
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Thread acceptConnection() { |
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Thread thread = new Thread(grp, |
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"connection acceptor") { |
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public void run() { |
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try { |
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Connection connection = ts.accept(listenKey, 0, 0); |
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/* |
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* Notify waiting thread of connection |
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*/ |
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notifyOfConnection(connection); |
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} catch (InterruptedIOException e) { |
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// VM terminated, stop accepting |
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} catch (IOException e) { |
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// Report any other exception to waiting thread |
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notifyOfAcceptException(e); |
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} |
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} |
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}; |
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thread.setDaemon(true); |
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thread.start(); |
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return thread; |
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} |
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} |
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} |