ACE_Hashable Class Reference

ACE_Hashable. More...

#include <Hashable.h>

Inheritance diagram for ACE_Hashable:

[legend]List of all members.

Public Member Functions
virtual	~ACE_Hashable (void)
	Destructor.
virtual unsigned long	hash (void) const
Protected Member Functions
	ACE_Hashable (void)
	Protected constructor.
virtual unsigned long	hash_i (void) const=0
Protected Attributes
unsigned long	hash_value_
	Pre-computed hash-value.

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Detailed Description

ACE_Hashable.

Definition at line 31 of file Hashable.h.

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Constructor & Destructor Documentation

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_Hashable::~ACE_Hashable (  void   )  [virtual]

Destructor. Definition at line 17 of file Hashable.cpp. { }

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE ACE_Hashable::ACE_Hashable (  void   )  [protected]

Protected constructor. Definition at line 9 of file Hashable.inl. : hash_value_ (0) { }

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Member Function Documentation

unsigned long ACE_Hashable::hash (  void   )  const [virtual]

Computes and returns hash value. This "caches" the hash value to improve performance. Definition at line 22 of file Hashable.cpp. References hash_i(), and hash_value_. { // In doing the check below, we take chance of paying a performance // price when the hash value is zero. But, that will (hopefully) // happen far less often than a non-zero value, so this caching // strategy should pay off, esp. if hash computation is expensive // relative to the simple comparison. if (this->hash_value_ == 0) this->hash_value_ = this->hash_i (); return this->hash_value_; }

virtual unsigned long ACE_Hashable::hash_i (  void   )  const [protected, pure virtual]

This is the method that actually performs the non-cached hash computation. Implemented in ACE_Refcounted_Hash_Recyclable< T >. Referenced by hash().

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Member Data Documentation

unsigned long ACE_Hashable::hash_value_ [mutable, protected]

Pre-computed hash-value. Definition at line 53 of file Hashable.h. Referenced by hash().

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The documentation for this class was generated from the following files:

• Hashable.h
• Hashable.cpp
• Hashable.inl

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