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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>DevUtils xref</title><link type="text/css" rel="stylesheet" href="../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../apidocs/org/archive/util/DevUtils.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*<em class="comment"> DevUtils</em></em><a name="2" href="#2">2</a> <em class="comment"> *</em><a name="3" href="#3">3</a> <em class="comment"> * Created on Oct 29, 2003</em><a name="4" href="#4">4</a> <em class="comment"> *</em><a name="5" href="#5">5</a> <em class="comment"> * Copyright (C) 2003 Internet Archive.</em><a name="6" href="#6">6</a> <em class="comment"> *</em><a name="7" href="#7">7</a> <em class="comment"> * This file is part of the Heritrix web crawler (crawler.archive.org).</em><a name="8" href="#8">8</a> <em class="comment"> *</em><a name="9" href="#9">9</a> <em class="comment"> * Heritrix is free software; you can redistribute it and/or modify</em><a name="10" href="#10">10</a> <em class="comment"> * it under the terms of the GNU Lesser Public License as published by</em><a name="11" href="#11">11</a> <em class="comment"> * the Free Software Foundation; either version 2.1 of the License, or</em><a name="12" href="#12">12</a> <em class="comment"> * any later version.</em><a name="13" href="#13">13</a> <em class="comment"> *</em><a name="14" href="#14">14</a> <em class="comment"> * Heritrix is distributed in the hope that it will be useful,</em><a name="15" href="#15">15</a> <em class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</em><a name="16" href="#16">16</a> <em class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</em><a name="17" href="#17">17</a> <em class="comment"> * GNU Lesser Public License for more details.</em><a name="18" href="#18">18</a> <em class="comment"> *</em><a name="19" href="#19">19</a> <em class="comment"> * You should have received a copy of the GNU Lesser Public License</em><a name="20" href="#20">20</a> <em class="comment"> * along with Heritrix; if not, write to the Free Software</em><a name="21" href="#21">21</a> <em class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</em><a name="22" href="#22">22</a> <em class="comment"> */</em><a name="23" href="#23">23</a> <strong>package</strong> <a href="../../../org/archive/util/package-summary.html">org.archive.util</a>;<a name="24" href="#24">24</a> <a name="25" href="#25">25</a> <strong>import</strong> java.io.BufferedReader;<a name="26" href="#26">26</a> <strong>import</strong> java.io.IOException;<a name="27" href="#27">27</a> <strong>import</strong> java.io.InputStreamReader;<a name="28" href="#28">28</a> <strong>import</strong> java.io.PrintWriter;<a name="29" href="#29">29</a> <strong>import</strong> java.io.StringWriter;<a name="30" href="#30">30</a> <strong>import</strong> java.util.logging.Logger;<a name="31" href="#31">31</a> <a name="32" href="#32">32</a> <a name="33" href="#33">33</a> <em>/**<em>*</em></em><a name="34" href="#34">34</a> <em> * Write a message and stack trace to the 'org.archive.util.DevUtils' logger.</em><a name="35" href="#35">35</a> <em> *</em><a name="36" href="#36">36</a> <em> * @author gojomo</em><a name="37" href="#37">37</a> <em> * @version $Revision: 1.11 $ $Date: 2005/11/22 08:16:28 $</em><a name="38" href="#38">38</a> <em> */</em><a name="39" href="#39">39</a> <strong>public</strong> <strong>class</strong> <a href="../../../org/archive/util/DevUtils.html">DevUtils</a> {<a name="40" href="#40">40</a> <strong>public</strong> <strong>static</strong> Logger logger =<a name="41" href="#41">41</a> Logger.getLogger(DevUtils.<strong>class</strong>.getName());<a name="42" href="#42">42</a> <a name="43" href="#43">43</a> <em>/**<em>*</em></em><a name="44" href="#44">44</a> <em> * Log a warning message to the logger 'org.archive.util.DevUtils' made of</em><a name="45" href="#45">45</a> <em> * the passed 'note' and a stack trace based off passed exception.</em><a name="46" href="#46">46</a> <em> *</em><a name="47" href="#47">47</a> <em> * @param ex Exception we print a stacktrace on.</em><a name="48" href="#48">48</a> <em> * @param note Message to print ahead of the stacktrace.</em><a name="49" href="#49">49</a> <em> */</em><a name="50" href="#50">50</a> <strong>public</strong> <strong>static</strong> <strong>void</strong> warnHandle(Throwable ex, String note) {<a name="51" href="#51">51</a> logger.warning(TextUtils.exceptionToString(note, ex));<a name="52" href="#52">52</a> }<a name="53" href="#53">53</a> <a name="54" href="#54">54</a> <em>/**<em>*</em></em><a name="55" href="#55">55</a> <em> * @return Extra information gotten from current Thread. May not</em><a name="56" href="#56">56</a> <em> * always be available in which case we return empty string.</em><a name="57" href="#57">57</a> <em> */</em><a name="58" href="#58">58</a> <strong>public</strong> <strong>static</strong> String extraInfo() {<a name="59" href="#59">59</a> StringWriter sw = <strong>new</strong> StringWriter();<a name="60" href="#60">60</a> PrintWriter pw = <strong>new</strong> PrintWriter(sw); <a name="61" href="#61">61</a> <strong>final</strong> Thread current = Thread.currentThread();<a name="62" href="#62">62</a> <strong>if</strong> (current instanceof Reporter) {<a name="63" href="#63">63</a> <a href="../../../org/archive/util/Reporter.html">Reporter</a> tt = (Reporter)current;<a name="64" href="#64">64</a> <strong>try</strong> {<a name="65" href="#65">65</a> tt.reportTo(pw);<a name="66" href="#66">66</a> } <strong>catch</strong> (IOException e) {<a name="67" href="#67">67</a> <em class="comment">// Not really possible w/ a StringWriter</em><a name="68" href="#68">68</a> e.printStackTrace();<a name="69" href="#69">69</a> } <a name="70" href="#70">70</a> }<a name="71" href="#71">71</a> <strong>if</strong> (current instanceof ProgressStatisticsReporter) {<a name="72" href="#72">72</a> <a href="../../../org/archive/util/ProgressStatisticsReporter.html">ProgressStatisticsReporter</a> tt = (ProgressStatisticsReporter)current;<a name="73" href="#73">73</a> <strong>try</strong> {<a name="74" href="#74">74</a> tt.progressStatisticsLegend(pw);<a name="75" href="#75">75</a> tt.progressStatisticsLine(pw);<a name="76" href="#76">76</a> } <strong>catch</strong> (IOException e) {<a name="77" href="#77">77</a> <em class="comment">// Not really possible w/ a StringWriter</em><a name="78" href="#78">78</a> e.printStackTrace();<a name="79" href="#79">79</a> }<a name="80" href="#80">80</a> }<a name="81" href="#81">81</a> pw.flush();<a name="82" href="#82">82</a> <strong>return</strong> sw.toString();<a name="83" href="#83">83</a> }<a name="84" href="#84">84</a> <a name="85" href="#85">85</a> <em>/**<em>*</em></em><a name="86" href="#86">86</a> <em> * @param re</em><a name="87" href="#87">87</a> <em> */</em><a name="88" href="#88">88</a> <strong>public</strong> <strong>static</strong> <strong>void</strong> betterPrintStack(RuntimeException re) {<a name="89" href="#89">89</a> <em class="comment">// TODO: print software version</em><a name="90" href="#90">90</a> <em class="comment">// TODO: print thread name</em><a name="91" href="#91">91</a> <em class="comment">// TODO: if ToeThread, print currentCuri and timing info</em><a name="92" href="#92">92</a> re.printStackTrace(System.err);<a name="93" href="#93">93</a> }<a name="94" href="#94">94</a> <a name="95" href="#95">95</a> <em>/**<em>*</em></em><a name="96" href="#96">96</a> <em> * Send this JVM process a SIGQUIT; giving a thread dump and possibly</em><a name="97" href="#97">97</a> <em> * a heap histogram (if using -XX:+PrintClassHistogram).</em><a name="98" href="#98">98</a> <em> * </em><a name="99" href="#99">99</a> <em> * Used to automatically dump info, for example when a serious error</em><a name="100" href="#100">100</a> <em> * is encountered. Would use 'jmap'/'jstack', but have seen JVM</em><a name="101" href="#101">101</a> <em> * lockups -- perhaps due to lost thread wake signals -- when using</em><a name="102" href="#102">102</a> <em> * those against Sun 1.5.0+03 64bit JVM. </em><a name="103" href="#103">103</a> <em> */</em><a name="104" href="#104">104</a> <strong>public</strong> <strong>static</strong> <strong>void</strong> sigquitSelf() {<a name="105" href="#105">105</a> <strong>try</strong> {<a name="106" href="#106">106</a> Process p = Runtime.getRuntime().exec(<a name="107" href="#107">107</a> <strong>new</strong> String[] {<span class="string">"perl"</span>, <span class="string">"-e"</span>, <span class="string">"print getppid(). \"\n\";"</span>});<a name="108" href="#108">108</a> BufferedReader br =<a name="109" href="#109">109</a> <strong>new</strong> BufferedReader(<strong>new</strong> InputStreamReader(p.getInputStream()));<a name="110" href="#110">110</a> String ppid = br.readLine();<a name="111" href="#111">111</a> Runtime.getRuntime().exec(<a name="112" href="#112">112</a> <strong>new</strong> String[] {<span class="string">"sh"</span>, <span class="string">"-c"</span>, <span class="string">"kill -3 "</span>+ppid}).waitFor();<a name="113" href="#113">113</a> } <strong>catch</strong> (IOException e) {<a name="114" href="#114">114</a> <em class="comment">// TODO Auto-generated catch block</em><a name="115" href="#115">115</a> e.printStackTrace();<a name="116" href="#116">116</a> } <strong>catch</strong> (InterruptedException e) {<a name="117" href="#117">117</a> <em class="comment">// TODO Auto-generated catch block</em><a name="118" href="#118">118</a> e.printStackTrace();<a name="119" href="#119">119</a> }<a name="120" href="#120">120</a> }<a name="121" href="#121">121</a> }</pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>⌨️ 快捷键说明
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