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<title>class Rack::Lock - rack-2.2.22 Documentation</title>

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  <h1 id="class-Rack::Lock" class="class">
    class Rack::Lock
  </h1>

<section class="description">
    
<p><a href="Lock.html"><code>Rack::Lock</code></a> locks every request inside a mutex, so that every request will effectively be executed synchronously.</p>

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         <h3>Public Class Methods</h3>
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<div id="method-c-new" class="method-detail ">
        
        <div class="method-heading">
          <span class="method-name">new</span><span
            class="method-args">(app, mutex = Mutex.new)</span>
          
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<div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File lib/rack/lock.rb, line 9</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">app</span>, <span class="ruby-identifier">mutex</span> = <span class="ruby-constant">Mutex</span>.<span class="ruby-identifier">new</span>)
  <span class="ruby-ivar">@app</span>, <span class="ruby-ivar">@mutex</span> = <span class="ruby-identifier">app</span>, <span class="ruby-identifier">mutex</span>
<span class="ruby-keyword">end</span></pre>
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         <h3>Public Instance Methods</h3>
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          <span class="method-name">call</span><span
            class="method-args">(env)</span>
          
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<div class="method-source-code" id="call-source">
            <pre><span class="ruby-comment"># File lib/rack/lock.rb, line 13</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">call</span>(<span class="ruby-identifier">env</span>)
  <span class="ruby-ivar">@mutex</span>.<span class="ruby-identifier">lock</span>
  <span class="ruby-ivar">@env</span> = <span class="ruby-identifier">env</span>
  <span class="ruby-ivar">@old_rack_multithread</span> = <span class="ruby-identifier">env</span>[<span class="ruby-constant">RACK_MULTITHREAD</span>]
  <span class="ruby-keyword">begin</span>
    <span class="ruby-identifier">response</span> = <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>.<span class="ruby-identifier">merge!</span>(<span class="ruby-constant">RACK_MULTITHREAD</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-keyword">false</span>))
    <span class="ruby-identifier">returned</span> = <span class="ruby-identifier">response</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-constant">BodyProxy</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">response</span>.<span class="ruby-identifier">pop</span>) { <span class="ruby-identifier">unlock</span> }
  <span class="ruby-keyword">ensure</span>
    <span class="ruby-identifier">unlock</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">returned</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
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         <h3>Private Instance Methods</h3>
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<div id="method-i-unlock" class="method-detail ">
        
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          <span class="method-name">unlock</span><span
            class="method-args">()</span>
          
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<div class="method-source-code" id="unlock-source">
            <pre><span class="ruby-comment"># File lib/rack/lock.rb, line 27</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">unlock</span>
  <span class="ruby-ivar">@mutex</span>.<span class="ruby-identifier">unlock</span>
  <span class="ruby-ivar">@env</span>[<span class="ruby-constant">RACK_MULTITHREAD</span>] = <span class="ruby-ivar">@old_rack_multithread</span>
<span class="ruby-keyword">end</span></pre>
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