64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
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// -*- C++ -*-
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//=============================================================================
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/**
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* @file Hashable.h
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*
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* @author Doug Schmidt
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*/
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//=============================================================================
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#ifndef ACE_HASHABLE_H
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#define ACE_HASHABLE_H
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#include /**/ "ace/pre.h"
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#include /**/ "ace/ACE_export.h"
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#if !defined (ACE_LACKS_PRAGMA_ONCE)
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# pragma once
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#endif /* ACE_LACKS_PRAGMA_ONCE */
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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/**
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* @class ACE_Hashable
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*
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* @brief ACE_Hashable
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*/
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class ACE_Export ACE_Hashable
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{
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public:
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/// Destructor.
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virtual ~ACE_Hashable (void);
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/// Computes and returns hash value. This "caches" the hash value to
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/// improve performance.
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virtual unsigned long hash (void) const;
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protected:
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/// Protected constructor.
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ACE_Hashable (void);
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/// This is the method that actually performs the non-cached hash
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/// computation.
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virtual unsigned long hash_i (void) const = 0;
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protected:
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/// Pre-computed hash-value.
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mutable unsigned long hash_value_;
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};
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ACE_END_VERSIONED_NAMESPACE_DECL
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#if defined (__ACE_INLINE__)
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#include "ace/Hashable.inl"
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#endif /* __ACE_INLINE __ */
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#include /**/ "ace/post.h"
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#endif /*ACE_HASHABLE_H*/
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