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  "http://www.boost.org/tools/boostbook/dtd/boostbook.dtd">
<!--
Copyright Frank Mori Hess 2008-2009

Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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<header name="boost/signals2/dummy_mutex.hpp" last-revision="$Date: 2007-03-06 16:51:55 -0500 (Tue, 06 Mar 2007) $">
  <using-namespace name="boost::signals2"/>
  <using-namespace name="boost"/>
  <namespace name="boost">
    <namespace name="signals2">
      <class name="dummy_mutex">
        <inherit access="public">
          <type><classname>noncopyable</classname></type>
        </inherit>
        <purpose>Fake mutex which does nothing.</purpose>
        <description>
          <para>You may wish to use the <code>dummy_mutex</code> class for the <code>Mutex</code>
          template type of your signals if you are not concerned about thread safety.
          This may give slightly faster
          performance, since <code>dummy_mutex</code> performs no actual locking.
          </para>
        </description>
        <access name="public">
          <method name="lock">
            <type>void</type>
            <description>
              <para>No effect.
              </para>
            </description>
          </method>
          <method name="try_lock">
            <type>bool</type>
            <description>
              <para>No effect.
              </para>
            </description>
            <returns><para><code>true</code>.</para></returns>
          </method>
          <method name="unlock">
            <type>void</type>
            <description>
              <para>No effect.
              </para>
            </description>
          </method>
        </access>
     </class>
    </namespace>
  </namespace>
</header>
