ACE/contrib/utility/Documentation/ReferenceCounting/Interface.hpp.html


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Interface.hpp</title>
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<span class=comment>// file      : Utility/ReferenceCounting/Interface.hpp
// author    : Boris Kolpackov &lt;boris@kolpackov.net&gt;
// copyright : Copyright (c) 2002-2003 Boris Kolpackov
// license   : http://kolpackov.net/license.html

</span><span class=keyword>namespace </span><span class=identifier>Utility
</span><span class=special>{
  </span><span class=keyword>namespace </span><span class=identifier>ReferenceCounting
  </span><span class=special>{
    </span><span class=comment>// Interface to a reference-countable object. Note that _remove_ref ()
    // member function has a no-throw semantic. Even though it can lead to
    // a diagnostic loss it was made no-throw because it has a destructor
    // semantic.

    </span><span class=keyword>class </span><span class=identifier>Interface
    </span><span class=special>{
    </span><span class=keyword>public</span><span class=special>:
      </span><span class=keyword>typedef
      </span><span class=keyword>unsigned </span><span class=keyword>long
      </span><span class=identifier>count_t</span><span class=special>;

      </span><span class=keyword>typedef
      </span><span class=identifier>ExH</span><span class=special>::</span><span class=identifier>System</span><span class=special>::</span><span class=identifier>Exception
      </span><span class=identifier>SystemException</span><span class=special>;

      </span><span class=keyword>class </span><span class=identifier>Exception_ </span><span class=special>{};
      </span><span class=keyword>typedef
      </span><span class=identifier>ExH</span><span class=special>::</span><span class=identifier>Compound</span><span class=special>&lt;</span><span class=identifier>Exception_</span><span class=special>, </span><span class=identifier>ExH</span><span class=special>::</span><span class=identifier>Logic</span><span class=special>::</span><span class=identifier>DescriptiveException</span><span class=special>&gt;
      </span><span class=identifier>Exception</span><span class=special>;

    </span><span class=keyword>public</span><span class=special>:
      </span><span class=keyword>virtual </span><span class=keyword>void
      </span><span class=identifier>add_ref </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>Exception</span><span class=special>, </span><span class=identifier>SystemException</span><span class=special>) </span><span class=special>= </span><span class=number>0</span><span class=special>;

      </span><span class=keyword>virtual </span><span class=keyword>void
      </span><span class=identifier>remove_ref </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>() </span><span class=special>= </span><span class=number>0</span><span class=special>;

      </span><span class=keyword>virtual </span><span class=identifier>count_t
      </span><span class=identifier>refcount_value </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>Exception</span><span class=special>, </span><span class=identifier>SystemException</span><span class=special>) </span><span class=special>= </span><span class=number>0</span><span class=special>;

    </span><span class=keyword>protected</span><span class=special>:
      </span><span class=identifier>Interface </span><span class=special>() </span><span class=keyword>throw </span><span class=special>();

      </span><span class=keyword>virtual
      </span><span class=special>~</span><span class=identifier>Interface </span><span class=special>() </span><span class=keyword>throw </span><span class=special>();

    </span><span class=keyword>protected</span><span class=special>:
      </span><span class=keyword>virtual </span><span class=keyword>void
      </span><span class=identifier>add_ref_i </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>Exception</span><span class=special>, </span><span class=identifier>SystemException</span><span class=special>) </span><span class=special>= </span><span class=number>0</span><span class=special>;

      </span><span class=keyword>virtual </span><span class=keyword>bool
      </span><span class=identifier>remove_ref_i </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>Exception</span><span class=special>, </span><span class=identifier>SystemException</span><span class=special>) </span><span class=special>= </span><span class=number>0</span><span class=special>;

      </span><span class=keyword>virtual </span><span class=identifier>count_t
      </span><span class=identifier>refcount_value_i </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>Exception</span><span class=special>, </span><span class=identifier>SystemException</span><span class=special>) </span><span class=special>= </span><span class=number>0</span><span class=special>;

    </span><span class=keyword>private</span><span class=special>:
      </span><span class=comment>// Copy semanic is not supported.
      </span><span class=identifier>Interface </span><span class=special>(</span><span class=identifier>Interface </span><span class=keyword>const</span><span class=special>&amp;) </span><span class=keyword>throw </span><span class=special>();
      </span><span class=identifier>Interface</span><span class=special>&amp;
      </span><span class=keyword>operator</span><span class=special>= </span><span class=special>(</span><span class=identifier>Interface </span><span class=keyword>const</span><span class=special>&amp;) </span><span class=keyword>throw </span><span class=special>();
    </span><span class=special>};

    </span><span class=keyword>template </span><span class=special>&lt;</span><span class=keyword>typename </span><span class=identifier>Type</span><span class=special>&gt;
    </span><span class=identifier>Type</span><span class=special>*
    </span><span class=identifier>add_ref </span><span class=special>(</span><span class=identifier>Type</span><span class=special>* </span><span class=identifier>ptr</span><span class=special>)
      </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>Interface</span><span class=special>::</span><span class=identifier>Exception</span><span class=special>, </span><span class=identifier>Interface</span><span class=special>::</span><span class=identifier>SystemException</span><span class=special>);
  </span><span class=special>}
</span><span class=special>}

</span></pre>
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