| /* |
| * Copyright (c) 2000, 2004, 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. |
| */ |
| |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.lang.reflect.Method; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.jar.Attributes; |
| import java.util.jar.JarFile; |
| |
| /** Run an application (from a jar file) and terminate it after a given |
| * number of seconds. |
| */ |
| |
| public class MaxTime { |
| |
| private static boolean debugFlag = false; |
| |
| |
| private static void debug(String s) { |
| if (debugFlag) { |
| System.err.println(s); |
| } |
| } |
| |
| |
| private static void usage() { |
| System.err.println( |
| "Usage:\n" + |
| " java MaxTime <jarfile> <timeout>\n" + |
| "\n" + |
| " <jarfile> is a jar file specifying an application to run\n" + |
| " <timeout> is an integer number of seconds to allow the app to run." ); |
| System.exit(1); |
| } |
| |
| |
| public static void main(String[] args) { |
| int timeoutPeriod = 0; |
| String mainClass = null; |
| |
| if (args.length != 2) |
| usage(); |
| |
| // Identify the timeout value. |
| try { |
| timeoutPeriod = Integer.parseInt(args[1]); |
| } catch (Exception e) { |
| usage(); |
| } |
| |
| // Identify the application's main class. |
| try { |
| mainClass = new JarFile(args[0]).getManifest() |
| .getMainAttributes().getValue(Attributes.Name.MAIN_CLASS); |
| } catch (FileNotFoundException e) { |
| System.err.println("Can't find " + args[0]); |
| System.exit(1); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| System.exit(2); |
| } |
| |
| // Set the exit timer. |
| final int timeout = timeoutPeriod * 1000; |
| new Thread() { |
| public void run() { |
| try { |
| debug("Before timeout!"); |
| Thread.sleep(timeout); |
| debug("After timeout!"); |
| } catch (InterruptedException e) { |
| } |
| debug("Exit caused by timeout!"); |
| System.exit(0); |
| } |
| }.start(); |
| |
| |
| // Start up the app. |
| try { |
| ClassLoader cl = new URLClassLoader( |
| new URL[] {new URL("file:"+args[0])}); |
| Class clazz = cl.loadClass(mainClass); |
| String[] objs = new String[0]; |
| Method mainMethod = clazz.getMethod("main", new Class[]{objs.getClass()}); |
| mainMethod.invoke(null, new Object[]{objs}); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| System.exit(3); |
| } |
| } |
| } |