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/* -*- C++ -*- */
ACE_INLINE
ACE_Hashable::ACE_Hashable (void)
: hash_value_ (0)
{
}
ACE_INLINE
ACE_Hashable::~ACE_Hashable (void)
{
}
ACE_INLINE u_long
ACE_Hashable::hash (void) const
{
// 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)
((ACE_Hashable *) this)->hash_value_ = this->hash_i ();
return this->hash_value_;
}
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