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    <head>
    <title>GSLock documentation</title>
  </head>
  <body>
    <font face="serif">
    <a href="BaseAdditions.html">Up</a>
    <br />
    <h1><a name="title$GSLock">GSLock documentation</a></h1>
    <h3>Authors</h3>
    <dl>
      <dt>Richard Frith-Macdonald (<a href="mailto:rfm@gnu.org"><code>rfm@gnu.org</code></a>)</dt>
      <dd>
      </dd>
    </dl>
    <p><b>Copyright:</b> (C) 2003 Free Software Foundation, Inc.</p>

        <div>
      <hr width="50%" align="left" />
      <h3>Contents -</h3>
      <ol>
        <li>
          <a href="#001000000000">Software documentation for the GSLazyLock class</a>
        </li>
        <li>
          <a href="#002000000000">Software documentation for the GSLazyRecursiveLock
        class</a>
        </li>
      </ol>
      <hr width="50%" align="left" />
    </div>

          <h1><a name="001000000000">
        Software documentation for the GSLazyLock class
      </a></h1>
    <h2><a name="class$GSLazyLock">GSLazyLock</a> : NSLock</h2>
    <blockquote class="declared">
      <dl>
        <dt><b>Declared in:</b></dt>
        <dd>GNUstepBase/GSLock.h</dd>
      </dl>
    </blockquote>
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
          This implements a class which, when used in
          single-threaded mode, acts like a lock while
          avoiding the overheads of actually using a real
          lock. However, when the programm in which the class is
          used becomes multi-threaded, all instances of this class
          transform themselves into real locks in the correct
          state (locked/unlocked) corresponding to whether the
          lazy lock was locked or not at the point where the
          program became multi threadeed. <br /> Use of this
          class allows you to write thread-safe code which avoids
          locking inefficiencies when used in a single threaded
          application, without having to worry about
          dealing with the issue yourself.
        
    </div>
    <hr width="50%" align="left" />
    <a href="#_GSLazyLock_ivars">Instance Variables</a>
    <br/><br/>
    <b>Method summary</b>
    <ul>
      <li><a rel="gsdoc" href="GSLock.html#method$GSLazyLock-_becomeThreaded$">-_becomeThreaded:</a></li>
    </ul>
    <hr width="50%" align="left" />
<div class="method">
    <h3><a name="method$GSLazyLock-_becomeThreaded$">_becomeThreaded:&nbsp;</a></h3>
    - (void) <b>_becomeThreaded:</b> (NSNotification*)n;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            <em>Warning</em> the underscore at the start of the
            name of this method indicates that it is private, for
            internal use only, and you should not use the
            method in your code. <br /> Do not use this method
            ... it is used internally to handle the transition from
            a single threaded system to a multi threaded one.
          
    </div>
    <hr width="25%" align="left" />
</div>
<a name="_GSLazyLock_ivars"/>    <br/><hr width="50%" align="left" />
    <h2>Instance Variables for GSLazyLock Class</h2>
    <h3><a name="ivariable$GSLazyLock*locked">locked</a></h3>
    @protected int <b>locked</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            <em>Description forthcoming.</em>
          
    </div>
    <hr width="25%" align="left" />
    <br/><hr width="50%" align="left" /><br/>

          <h1><a name="002000000000">
        Software documentation for the GSLazyRecursiveLock
        class
      </a></h1>
    <h2><a name="class$GSLazyRecursiveLock">GSLazyRecursiveLock</a> : NSRecursiveLock</h2>
    <blockquote class="declared">
      <dl>
        <dt><b>Declared in:</b></dt>
        <dd>GNUstepBase/GSLock.h</dd>
      </dl>
    </blockquote>
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
          This implements a class which, when used in
          single-threaded mode, acts like a recursive
          lock while avoiding the overheads of using a real lock.
          However, when the programm in which the class is
          used becomes multi-threaded, all instances of this class
          transform themselves into real locks in the correct
          state (locked/unlocked) corresponding to whether the
          lazy recursive lock was locked or not at the point where
          the program became multi threadeed. <br /> Use of this
          class allows you to write thread-safe code which avoids
          locking inefficiencies when used in a single threaded
          application, without having to worry about
          dealing with the issue yourself.
        
    </div>
    <hr width="50%" align="left" />
    <a href="#_GSLazyRecursiveLock_ivars">Instance Variables</a>
    <br/><br/>
    <b>Method summary</b>
    <ul>
      <li><a rel="gsdoc" href="GSLock.html#method$GSLazyRecursiveLock-_becomeThreaded$">-_becomeThreaded:</a></li>
    </ul>
    <hr width="50%" align="left" />
<div class="method">
    <h3><a name="method$GSLazyRecursiveLock-_becomeThreaded$">_becomeThreaded:&nbsp;</a></h3>
    - (void) <b>_becomeThreaded:</b> (NSNotification*)n;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            <em>Warning</em> the underscore at the start of the
            name of this method indicates that it is private, for
            internal use only, and you should not use the
            method in your code. <br /> Do not use this method
            ... it is used internally to handle the transition from
            a single threaded system to a multi threaded one.
          
    </div>
    <hr width="25%" align="left" />
</div>
<a name="_GSLazyRecursiveLock_ivars"/>    <br/><hr width="50%" align="left" />
    <h2>Instance Variables for GSLazyRecursiveLock Class</h2>
    <h3><a name="ivariable$GSLazyRecursiveLock*counter">counter</a></h3>
    @protected int <b>counter</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            <em>Description forthcoming.</em>
          
    </div>
    <hr width="25%" align="left" />
    <br/><hr width="50%" align="left" /><br/>
    <br />
    <a href="BaseAdditions.html">Up</a>
    </font>
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