/*!
* \brief Swaps contents of two caches
*
* Exchanges the content of the cache with the content of mp, which is another cache object containing elements of the same type and using the same expiration policy.
* Sizes may differ. Maximum number of entries may differ too.
*
* \param <mp> Another cache of the same type as this whose cache is swapped with that of this cache.
*
* \throw <exception_invalid_policy> Thrown when the policies of the caches to swap are incompatible.
*
* \see cache::operator=
*/
void swap ( cache<Key,Data,Policy,Compare,Allocator>& mp ) {
write_lock_type l = lock.lockWrite();
_storage.swap(mp._storage);
_policy->swap(*mp._policy);
std::size_t m=this->_maxEntries;
this->_maxEntries=mp._maxEntries;
mp._maxEntries=m;
this->_currEntries=this->_size();
mp._currEntries=mp.size();
}
void serialize(Serializer& sink, cache<Key, Value, Policy> const& c) {
sink << static_cast<uint64_t>(c.capacity());
sink << static_cast<uint64_t>(c.size());
for (auto entry : c)
sink << entry.first << entry.second;
}
