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30 lines
746 B
C++
30 lines
746 B
C++
//$Id: Hashable.cpp 93736 2011-04-05 12:38:35Z johnnyw $
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#include "ace/Hashable.h"
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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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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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ACE_Hashable::~ACE_Hashable (void)
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{
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}
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unsigned long
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ACE_Hashable::hash (void) const
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{
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// In doing the check below, we take chance of paying a performance
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// price when the hash value is zero. But, that will (hopefully)
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// happen far less often than a non-zero value, so this caching
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// strategy should pay off, esp. if hash computation is expensive
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// relative to the simple comparison.
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if (this->hash_value_ == 0)
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this->hash_value_ = this->hash_i ();
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return this->hash_value_;
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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