1 /*
   2  * Copyright (c) 2003, 2011, 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.jdi;
  26 
  27 public final class SADebugServer {
  28    // do not allow instance creation
  29    private SADebugServer() {}
  30 
  31    private static void usage() {
  32       java.io.PrintStream out = System.out;
  33       out.println("Usage: jsadebugd [options] <pid> [server-id]");
  34       out.println("\t\t(to connect to a live java process)");
  35       out.println("   or  jsadebugd [options] <executable> <core> [server-id]");
  36       out.println("\t\t(to connect to a core file produced by <executable>)");
  37       out.println("\t\tserver-id is an optional unique id for this debug server, needed ");
  38       out.println("\t\tif multiple debug servers are run on the same machine");
  39       out.println("where options include:");
  40       out.println("   -h | -help\tto print this help message");
  41       System.exit(1);
  42   }
  43 
  44    public static void main(String[] args) {
  45       if ((args.length < 1) || (args.length > 3)) {
  46          usage();
  47       }
  48 
  49       // Attempt to handle "-h" or "-help"
  50       if (args[0].startsWith("-")) {
  51          usage();
  52       }
  53 
  54       // delegate to the actual SA debug server.
  55       sun.jvm.hotspot.DebugServer.main(args);
  56    }
  57 }