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/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. You may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#pragma once
#include <seastar/core/sstring.hh>
namespace memcache {
using namespace seastar;
class item;
class cache;
class item_key {
private:
sstring _key;
size_t _hash;
public:
item_key() = default;
item_key(item_key&) = default;
item_key(sstring key)
: _key(key)
, _hash(std::hash<sstring>()(key))
{}
item_key(item_key&& other)
: _key(std::move(other._key))
, _hash(other._hash)
{
other._hash = 0;
}
size_t hash() const {
return _hash;
}
const sstring& key() const {
return _key;
}
bool operator==(const item_key& other) const {
return other._hash == _hash && other._key == _key;
}
void operator=(item_key&& other) {
_key = std::move(other._key);
_hash = other._hash;
other._hash = 0;
}
};
}
namespace std {
template <>
struct hash<memcache::item_key> {
size_t operator()(const memcache::item_key& key) {
return key.hash();
}
};
} /* namespace std */
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