doc/classes/MCollective/UnixDaemon.html

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   8   <title>Class: MCollective::UnixDaemon</title>
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  50         <table class="header-table">
  51         <tr class="top-aligned-row">
  52           <td><strong>Class</strong></td>
  53           <td class="class-name-in-header">MCollective::UnixDaemon</td>
  54         </tr>
  55         <tr class="top-aligned-row">
  56             <td><strong>In:</strong></td>
  57             <td>
  58                 <a href="../../files/lib/mcollective/unix_daemon_rb.html">
  59                 lib/mcollective/unix_daemon.rb
  60                 </a>
  61         <br />
  62             </td>
  63         </tr>
  64
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  66             <td><strong>Parent:</strong></td>
  67             <td>
  68                 Object
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  83    </div>
  84
  85     <div id="method-list">
  86       <h3 class="section-bar">Methods</h3>
  87
  88       <div class="name-list">
  89       <a href="#M000423">daemonize</a>&nbsp;&nbsp;
  90       <a href="#M000424">daemonize_runner</a>&nbsp;&nbsp;
  91       </div>
  92     </div>
  93
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 108     <!-- if method_list -->
 109     <div id="methods">
 110       <h3 class="section-bar">Public Class methods</h3>
 111
 112       <div id="method-M000423" class="method-detail">
 113         <a name="M000423"></a>
 114
 115         <div class="method-heading">
 116           <a href="#M000423" class="method-signature">
 117           <span class="method-name">daemonize</span><span class="method-args">() {|| ...}</span>
 118           </a>
 119         </div>
 120
 121         <div class="method-description">
 122           <p>
 123 Daemonize the current process
 124 </p>
 125           <p><a class="source-toggle" href="#"
 126             onclick="toggleCode('M000423-source');return false;">[Source]</a></p>
 127           <div class="method-source-code" id="M000423-source">
 128 <pre>
 129     <span class="ruby-comment cmt"># File lib/mcollective/unix_daemon.rb, line 4</span>
 130  4:     <span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">daemonize</span>
 131  5:       <span class="ruby-identifier">fork</span> <span class="ruby-keyword kw">do</span>
 132  6:         <span class="ruby-constant">Process</span>.<span class="ruby-identifier">setsid</span>
 133  7:         <span class="ruby-identifier">exit</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">fork</span>
 134  8:         <span class="ruby-constant">Dir</span>.<span class="ruby-identifier">chdir</span>(<span class="ruby-value str">'/tmp'</span>)
 135  9:         <span class="ruby-constant">STDIN</span>.<span class="ruby-identifier">reopen</span>(<span class="ruby-value str">'/dev/null'</span>)
 136 10:         <span class="ruby-constant">STDOUT</span>.<span class="ruby-identifier">reopen</span>(<span class="ruby-value str">'/dev/null'</span>, <span class="ruby-value str">'a'</span>)
 137 11:         <span class="ruby-constant">STDERR</span>.<span class="ruby-identifier">reopen</span>(<span class="ruby-value str">'/dev/null'</span>, <span class="ruby-value str">'a'</span>)
 138 12:
 139 13:         <span class="ruby-keyword kw">yield</span>
 140 14:       <span class="ruby-keyword kw">end</span>
 141 15:     <span class="ruby-keyword kw">end</span>
 142 </pre>
 143           </div>
 144         </div>
 145       </div>
 146
 147       <div id="method-M000424" class="method-detail">
 148         <a name="M000424"></a>
 149
 150         <div class="method-heading">
 151           <a href="#M000424" class="method-signature">
 152           <span class="method-name">daemonize_runner</span><span class="method-args">(pid=nil)</span>
 153           </a>
 154         </div>
 155
 156         <div class="method-description">
 157           <p><a class="source-toggle" href="#"
 158             onclick="toggleCode('M000424-source');return false;">[Source]</a></p>
 159           <div class="method-source-code" id="M000424-source">
 160 <pre>
 161     <span class="ruby-comment cmt"># File lib/mcollective/unix_daemon.rb, line 17</span>
 162 17:     <span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">daemonize_runner</span>(<span class="ruby-identifier">pid</span>=<span class="ruby-keyword kw">nil</span>)
 163 18:       <span class="ruby-identifier">raise</span> <span class="ruby-value str">&quot;The Unix Daemonizer can not be used on the Windows Platform&quot;</span> <span class="ruby-keyword kw">if</span> <span class="ruby-constant">Util</span>.<span class="ruby-identifier">windows?</span>
 164 19:
 165 20:       <span class="ruby-constant">UnixDaemon</span>.<span class="ruby-identifier">daemonize</span> <span class="ruby-keyword kw">do</span>
 166 21:         <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">pid</span>
 167 22:           <span class="ruby-keyword kw">begin</span>
 168 23:             <span class="ruby-constant">File</span>.<span class="ruby-identifier">open</span>(<span class="ruby-identifier">pid</span>, <span class="ruby-value str">'w'</span>) {<span class="ruby-operator">|</span><span class="ruby-identifier">f</span><span class="ruby-operator">|</span> <span class="ruby-identifier">f</span>.<span class="ruby-identifier">write</span>(<span class="ruby-constant">Process</span>.<span class="ruby-identifier">pid</span>) }
 169 24:           <span class="ruby-keyword kw">rescue</span> <span class="ruby-constant">Exception</span> =<span class="ruby-operator">&gt;</span> <span class="ruby-identifier">e</span>
 170 25:           <span class="ruby-keyword kw">end</span>
 171 26:         <span class="ruby-keyword kw">end</span>
 172 27:
 173 28:         <span class="ruby-keyword kw">begin</span>
 174 29:           <span class="ruby-identifier">runner</span> = <span class="ruby-constant">Runner</span>.<span class="ruby-identifier">new</span>(<span class="ruby-keyword kw">nil</span>)
 175 30:           <span class="ruby-identifier">runner</span>.<span class="ruby-identifier">run</span>
 176 31:         <span class="ruby-keyword kw">ensure</span>
 177 32:           <span class="ruby-constant">File</span>.<span class="ruby-identifier">unlink</span>(<span class="ruby-identifier">pid</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">pid</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-constant">File</span>.<span class="ruby-identifier">exist?</span>(<span class="ruby-identifier">pid</span>)
 178 33:         <span class="ruby-keyword kw">end</span>
 179 34:       <span class="ruby-keyword kw">end</span>
 180 35:     <span class="ruby-keyword kw">end</span>
 181 </pre>
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