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Current File : //usr/share/doc/gnustep-base-doc/BaseAdditions/Reference/GSLock.gsdoc

<?xml version="1.0"?>
<!DOCTYPE gsdoc PUBLIC "-//GNUstep//DTD gsdoc 1.0.4//EN" "http://www.gnustep.org/gsdoc-1_0_4.dtd">
<gsdoc base="GSLock" up="BaseAdditions">
  <head>
    <title>GSLock documentation</title>
    <author name="Richard Frith-Macdonald">
      <email address="rfm@gnu.org">
        rfm@gnu.org
      </email>
    </author>
    <copy>2003 Free Software Foundation, Inc.</copy>
  </head>
  <body>
    <front><contents /></front>
    <chapter>
      <heading>
        Software documentation for the GSLazyLock class
      </heading>
      <class name="GSLazyLock" super="NSLock" ovadd="1.0.0">
        <declared>GNUstepBase/GSLock.h</declared>
        <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.
        </desc>
        <ivariable type="int" name="locked" validity="protected" ovadd="1.0.0">
          <desc>
            <em>Description forthcoming.</em>
          </desc>
        </ivariable>
        <method type="void" ovadd="1.0.0">
          <sel>_becomeThreaded:</sel>
          <arg type="NSNotification*">n</arg>
          <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.
          </desc>
        </method>
      </class>
    </chapter>
    <chapter>
      <heading>
        Software documentation for the GSLazyRecursiveLock
        class
      </heading>
      <class name="GSLazyRecursiveLock" super="NSRecursiveLock" ovadd="1.0.0">
        <declared>GNUstepBase/GSLock.h</declared>
        <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.
        </desc>
        <ivariable type="int" name="counter" validity="protected" ovadd="1.0.0">
          <desc>
            <em>Description forthcoming.</em>
          </desc>
        </ivariable>
        <method type="void" ovadd="1.0.0">
          <sel>_becomeThreaded:</sel>
          <arg type="NSNotification*">n</arg>
          <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.
          </desc>
        </method>
      </class>
    </chapter>
  </body>
</gsdoc>

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