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Possible License(s): Apache-2.0
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  5. <title>ThreadGroupRenderer xref</title>
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  9. <div id="overview"><a href="../../../../../apidocs/org/apache/log4j/or/ThreadGroupRenderer.html">View Javadoc</a></div><pre>
  10. <a name="1" href="#1">1</a> <em class="jxr_comment">/*</em>
  11. <a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
  12. <a name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
  13. <a name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
  14. <a name="5" href="#5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
  15. <a name="6" href="#6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
  16. <a name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
  17. <a name="8" href="#8">8</a> <em class="jxr_comment"> * </em>
  18. <a name="9" href="#9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
  19. <a name="10" href="#10">10</a> <em class="jxr_comment"> * </em>
  20. <a name="11" href="#11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
  21. <a name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
  22. <a name="13" href="#13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
  23. <a name="14" href="#14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
  24. <a name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the License.</em>
  25. <a name="16" href="#16">16</a> <em class="jxr_comment"> */</em>
  26. <a name="17" href="#17">17</a>
  27. <a name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.log4j.or;
  28. <a name="19" href="#19">19</a>
  29. <a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Layout;
  30. <a name="21" href="#21">21</a>
  31. <a name="22" href="#22">22</a>
  32. <a name="23" href="#23">23</a> <em class="jxr_javadoccomment">/**</em>
  33. <a name="24" href="#24">24</a> <em class="jxr_javadoccomment"> Render {@link ThreadGroup} objects in a format similar to the</em>
  34. <a name="25" href="#25">25</a> <em class="jxr_javadoccomment"> information output by the {@link ThreadGroup#list} method.</em>
  35. <a name="26" href="#26">26</a> <em class="jxr_javadoccomment"> @author Ceki G&amp;uuml;lc&amp;uuml;</em>
  36. <a name="27" href="#27">27</a> <em class="jxr_javadoccomment"> @since 1.0 */</em>
  37. <a name="28" href="#28">28</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/log4j/or/ThreadGroupRenderer.html">ThreadGroupRenderer</a> implements <a href="../../../../org/apache/log4j/or/ObjectRenderer.html">ObjectRenderer</a> {
  38. <a name="29" href="#29">29</a>
  39. <a name="30" href="#30">30</a> <strong class="jxr_keyword">public</strong>
  40. <a name="31" href="#31">31</a> <a href="../../../../org/apache/log4j/or/ThreadGroupRenderer.html">ThreadGroupRenderer</a>() {
  41. <a name="32" href="#32">32</a> }
  42. <a name="33" href="#33">33</a>
  43. <a name="34" href="#34">34</a> <em class="jxr_javadoccomment">/**</em>
  44. <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> Render a {@link ThreadGroup} object similar to the way that the</em>
  45. <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> {@link ThreadGroup#list} method output information. </em>
  46. <a name="37" href="#37">37</a>
  47. <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> &lt;p&gt;The output of a simple program consisting of one</em>
  48. <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> &lt;code&gt;main&lt;/code&gt; thread is:</em>
  49. <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> &lt;pre&gt;</em>
  50. <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> java.lang.ThreadGroup[name=main, maxpri=10]</em>
  51. <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> Thread=[main,5,false]</em>
  52. <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> &lt;/pre&gt;</em>
  53. <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> </em>
  54. <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> &lt;p&gt;The boolean value in thread information is the value returned</em>
  55. <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> by {@link Thread#isDaemon}.</em>
  56. <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> </em>
  57. <a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> */</em>
  58. <a name="49" href="#49">49</a> <strong class="jxr_keyword">public</strong>
  59. <a name="50" href="#50">50</a> String doRender(Object o) {
  60. <a name="51" href="#51">51</a> <strong class="jxr_keyword">if</strong>(o instanceof ThreadGroup) {
  61. <a name="52" href="#52">52</a> StringBuffer sbuf = <strong class="jxr_keyword">new</strong> StringBuffer();
  62. <a name="53" href="#53">53</a> ThreadGroup tg = (ThreadGroup) o;
  63. <a name="54" href="#54">54</a> sbuf.append(<span class="jxr_string">"java.lang.ThreadGroup[name="</span>);
  64. <a name="55" href="#55">55</a> sbuf.append(tg.getName());
  65. <a name="56" href="#56">56</a> sbuf.append(<span class="jxr_string">", maxpri="</span>);
  66. <a name="57" href="#57">57</a> sbuf.append(tg.getMaxPriority());
  67. <a name="58" href="#58">58</a> sbuf.append(<span class="jxr_string">"]"</span>);
  68. <a name="59" href="#59">59</a> Thread[] t = <strong class="jxr_keyword">new</strong> Thread[tg.activeCount()];
  69. <a name="60" href="#60">60</a> tg.enumerate(t);
  70. <a name="61" href="#61">61</a> <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i &lt; t.length; i++) {
  71. <a name="62" href="#62">62</a> sbuf.append(Layout.LINE_SEP);
  72. <a name="63" href="#63">63</a> sbuf.append(<span class="jxr_string">" Thread=["</span>);
  73. <a name="64" href="#64">64</a> sbuf.append(t[i].getName());
  74. <a name="65" href="#65">65</a> sbuf.append(<span class="jxr_string">","</span>);
  75. <a name="66" href="#66">66</a> sbuf.append(t[i].getPriority());
  76. <a name="67" href="#67">67</a> sbuf.append(<span class="jxr_string">","</span>);
  77. <a name="68" href="#68">68</a> sbuf.append(t[i].isDaemon());
  78. <a name="69" href="#69">69</a> sbuf.append(<span class="jxr_string">"]"</span>);
  79. <a name="70" href="#70">70</a> }
  80. <a name="71" href="#71">71</a> <strong class="jxr_keyword">return</strong> sbuf.toString();
  81. <a name="72" href="#72">72</a> } <strong class="jxr_keyword">else</strong> {
  82. <a name="73" href="#73">73</a> <strong class="jxr_keyword">try</strong> {
  83. <a name="74" href="#74">74</a> <em class="jxr_comment">// this is the best we can do</em>
  84. <a name="75" href="#75">75</a> <strong class="jxr_keyword">return</strong> o.toString();
  85. <a name="76" href="#76">76</a> } <strong class="jxr_keyword">catch</strong>(Exception ex) {
  86. <a name="77" href="#77">77</a> <strong class="jxr_keyword">return</strong> ex.toString();
  87. <a name="78" href="#78">78</a> }
  88. <a name="79" href="#79">79</a> }
  89. <a name="80" href="#80">80</a> }
  90. <a name="81" href="#81">81</a> }
  91. </pre>
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