| /* |
| * Copyright (c) 2011, 2012, 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 sun.tools.jcmd; |
| |
| import java.io.BufferedReader; |
| import java.io.FileReader; |
| import java.io.IOException; |
| |
| class Arguments { |
| private boolean listProcesses = false; |
| private boolean listCounters = false; |
| private boolean showUsage = false; |
| private String command = null; |
| private String processString = null; |
| |
| public boolean isListProcesses() { return listProcesses; } |
| public boolean isListCounters() { return listCounters; } |
| public boolean isShowUsage() { return showUsage; } |
| public String getCommand() { return command; } |
| public String getProcessString() { return processString; } |
| |
| public Arguments(String[] args) { |
| if (args.length == 0 || args[0].equals("-l")) { |
| listProcesses = true; |
| /* list all processes */ |
| processString = "0"; |
| return; |
| } |
| |
| if (args[0].equals("-h") || args[0].equals("-help") ) { |
| showUsage = true; |
| return; |
| } |
| |
| processString = args[0]; |
| |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 1; i < args.length; i++) { |
| if (args[i].equals("-f")) { |
| if (args.length == i + 1) { |
| throw new IllegalArgumentException( |
| "No file specified for parameter -f"); |
| } else if (args.length == i + 2) { |
| try { |
| readCommandFile(args[i + 1]); |
| } catch(IOException e) { |
| throw new IllegalArgumentException( |
| "Could not read from file specified with -f option: " |
| + args[i + 1]); |
| } |
| return; |
| } else { |
| throw new IllegalArgumentException( |
| "Options after -f are not allowed"); |
| } |
| } else if (args[i].equals("PerfCounter.print")) { |
| listCounters = true; |
| } else { |
| sb.append(args[i]).append(" "); |
| } |
| } |
| |
| if (listCounters != true && sb.length() == 0) { |
| throw new IllegalArgumentException("No command specified"); |
| } |
| |
| command = sb.toString().trim(); |
| } |
| |
| private void readCommandFile(String path) throws IOException { |
| try (BufferedReader bf = new BufferedReader(new FileReader(path));) { |
| StringBuilder sb = new StringBuilder(); |
| String s; |
| while ((s = bf.readLine()) != null) { |
| sb.append(s).append("\n"); |
| } |
| command = sb.toString(); |
| } |
| } |
| |
| public static void usage() { |
| System.out.println("Usage: jcmd <pid | main class> <command ...|PerfCounter.print|-f file>"); |
| System.out.println(" or: jcmd -l "); |
| System.out.println(" or: jcmd -h "); |
| System.out.println(" "); |
| System.out.println(" command must be a valid jcmd command for the selected jvm. "); |
| System.out.println(" Use the command \"help\" to see which commands are available. "); |
| System.out.println(" If the pid is 0, commands will be sent to all Java processes. "); |
| System.out.println(" The main class argument will be used to match (either partially "); |
| System.out.println(" or fully) the class used to start Java. "); |
| System.out.println(" If no options are given, lists Java processes (same as -l). "); |
| System.out.println(" "); |
| System.out.println(" PerfCounter.print display the counters exposed by this process "); |
| System.out.println(" -f read and execute commands from the file "); |
| System.out.println(" -l list JVM processes on the local machine "); |
| System.out.println(" -h this help "); |
| } |
| } |