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annotate test/testlibrary/com/oracle/java/testlibrary/JDKToolLauncher.java @ 9093:cd22923e7ca7

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removed unnecessary code
author Doug Simon <doug.simon@oracle.com>
date Fri, 12 Apr 2013 21:35:27 +0200
parents 8bf6338972ce
children 8ef918538e22
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 package com.oracle.java.testlibrary;
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25
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26 import java.util.List;
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27 import java.util.ArrayList;
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28 import java.util.Arrays;
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29
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30 import com.oracle.java.testlibrary.JDKToolFinder;
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31 import com.oracle.java.testlibrary.ProcessTools;
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32
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33 /**
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34 * A utility for constructing command lines for starting JDK tool processes.
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35 *
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36 * The JDKToolLauncher can in particular be combined with a
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37 * java.lang.ProcessBuilder to easily run a JDK tool. For example, the
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38 * following code run {@code jmap -heap} against a process with GC logging
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39 * turned on for the {@code jmap} process:
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40 *
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41 * <pre>
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42 * {@code
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43 * JDKToolLauncher jmap = JDKToolLauncher.create("jmap")
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44 * .addVMArg("-XX:+PrintGC");
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45 * .addVMArg("-XX:+PrintGCDetails")
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46 * .addToolArg("-heap")
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47 * .addToolArg(pid);
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48 * ProcessBuilder pb = new ProcessBuilder(jmap.getCommand());
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49 * Process p = pb.start();
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50 * }
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51 * </pre>
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52 */
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53 public class JDKToolLauncher {
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54 private final String executable;
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55 private final List<String> vmArgs = new ArrayList<String>();
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56 private final List<String> toolArgs = new ArrayList<String>();
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57
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58 private JDKToolLauncher(String tool) {
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59 executable = JDKToolFinder.getJDKTool(tool);
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60 vmArgs.addAll(Arrays.asList(ProcessTools.getPlatformSpecificVMArgs()));
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61 }
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62
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63 /**
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64 * Creates a new JDKToolLauncher for the specified tool.
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65 *
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66 * @param tool The name of the tool
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67 * @return A new JDKToolLauncher
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68 */
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69 public static JDKToolLauncher create(String tool) {
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70 return new JDKToolLauncher(tool);
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71 }
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72
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73 /**
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74 * Adds an argument to the JVM running the tool.
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75 *
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76 * The JVM arguments are passed to the underlying JVM running the tool.
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77 * Arguments will automatically be prepended with "-J".
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78 *
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79 * Any platform specific arguments required for running the tool are
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80 * automatically added.
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81 *
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82 *
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83 * @param arg The argument to VM running the tool
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84 * @return The JDKToolLauncher instance
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85 */
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86 public JDKToolLauncher addVMArg(String arg) {
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87 vmArgs.add("-J" + arg);
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88 return this;
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89 }
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90
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91 /**
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92 * Adds an argument to the tool.
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93 *
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94 * @param arg The argument to the tool
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95 * @return The JDKToolLauncher instance
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96 */
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97 public JDKToolLauncher addToolArg(String arg) {
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98 toolArgs.add(arg);
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99 return this;
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100 }
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101
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102 /**
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103 * Returns the command that can be used for running the tool.
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104 *
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105 * @return An array whose elements are the arguments of the command.
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106 */
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107 public String[] getCommand() {
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108 List<String> command = new ArrayList<String>();
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109 command.add(executable);
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110 command.addAll(vmArgs);
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111 command.addAll(toolArgs);
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112 return command.toArray(new String[command.size()]);
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113 }
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114 }