Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/src/seastar/apps/memcached/memcached.hh b/src/seastar/apps/memcached/memcached.hh
new file mode 100644
index 000000000..9a5875787
--- /dev/null
+++ b/src/seastar/apps/memcached/memcached.hh
@@ -0,0 +1,74 @@
+/*
+ * 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 */