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DefaultImpl.hpp</title>
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<span class=comment>// file : Utility/ReferenceCounting/DefaultImpl.hpp
// author : Boris Kolpackov <boris@kolpackov.net>
// 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>// Default reference counter implementation with parameterised
// synchronization policy. It is assumed that none of the SynchPolicy
// types throw any logic exceptions. If in fact they do then these
// exceptions won't be handled and will be automatically converted
// to system exceptions.
</span><span class=keyword>template </span><span class=special><</span><span class=keyword>typename </span><span class=identifier>SynchPolicy </span><span class=special>= </span><span class=identifier>Utility</span><span class=special>::</span><span class=identifier>Synch</span><span class=special>::</span><span class=identifier>Policy</span><span class=special>::</span><span class=identifier>Null</span><span class=special>>
</span><span class=keyword>class </span><span class=identifier>DefaultImpl </span><span class=special>: </span><span class=keyword>public </span><span class=keyword>virtual </span><span class=identifier>Interface
</span><span class=special>{
</span><span class=keyword>public</span><span class=special>:
</span><span class=keyword>class </span><span class=identifier>InconsistentState_ </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><</span><span class=identifier>InconsistentState_</span><span class=special>, </span><span class=identifier>Exception</span><span class=special>>
</span><span class=identifier>InconsistentState</span><span class=special>;
</span><span class=keyword>public</span><span class=special>:
</span><span class=identifier>DefaultImpl </span><span class=special>() </span><span class=keyword>throw </span><span class=special>(</span><span class=identifier>SystemException</span><span class=special>);
</span><span class=keyword>virtual
</span><span class=special>~</span><span class=identifier>DefaultImpl </span><span class=special>() </span><span class=keyword>throw </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=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=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=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=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=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=keyword>typename </span><span class=identifier>SynchPolicy</span><span class=special>::</span><span class=identifier>Mutex</span><span class=special>&
</span><span class=identifier>lock_i </span><span class=special>() </span><span class=keyword>const </span><span class=keyword>throw </span><span class=special>();
</span><span class=keyword>protected</span><span class=special>:
</span><span class=keyword>typedef
</span><span class=keyword>typename </span><span class=identifier>SynchPolicy</span><span class=special>::</span><span class=identifier>Mutex
</span><span class=identifier>Mutex_</span><span class=special>;
</span><span class=keyword>typedef
</span><span class=keyword>typename </span><span class=identifier>SynchPolicy</span><span class=special>::</span><span class=identifier>ReadGuard
</span><span class=identifier>ReadGuard_</span><span class=special>;
</span><span class=keyword>typedef
</span><span class=keyword>typename </span><span class=identifier>SynchPolicy</span><span class=special>::</span><span class=identifier>WriteGuard
</span><span class=identifier>WriteGuard_</span><span class=special>;
</span><span class=keyword>protected</span><span class=special>:
</span><span class=keyword>mutable </span><span class=identifier>count_t </span><span class=identifier>ref_count_</span><span class=special>;
</span><span class=keyword>private</span><span class=special>:
</span><span class=keyword>mutable </span><span class=identifier>Mutex_ </span><span class=identifier>lock_</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>DefaultImpl </span><span class=special>(</span><span class=identifier>DefaultImpl </span><span class=keyword>const</span><span class=special>&) </span><span class=keyword>throw </span><span class=special>();
</span><span class=identifier>DefaultImpl</span><span class=special>&
</span><span class=keyword>operator</span><span class=special>= </span><span class=special>(</span><span class=identifier>DefaultImpl </span><span class=keyword>const</span><span class=special>&) </span><span class=keyword>throw </span><span class=special>();
</span><span class=special>};
</span><span class=special>}
</span><span class=special>}
</span></pre>
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