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<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: </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: </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>
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