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-rw-r--r--cpp/src/qpid/cluster/LockedMap.h73
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diff --git a/cpp/src/qpid/cluster/LockedMap.h b/cpp/src/qpid/cluster/LockedMap.h
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--- a/cpp/src/qpid/cluster/LockedMap.h
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-#ifndef QPID_CLUSTER_LOCKEDMAP_H
-#define QPID_CLUSTER_LOCKEDMAP_H
-
-/*
- *
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); 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.
- *
- */
-
-#include "qpid/sys/Mutex.h"
-#include <map>
-
-namespace qpid {
-namespace cluster {
-
-/**
- * A reader-writer locked thread safe map.
- */
-template <class Key, class Value>
-class LockedMap
-{
- public:
- /** Get value associated with key, returns Value() if none. */
- Value get(const Key& key) const {
- sys::RWlock::ScopedRlock r(lock);
- typename Map::const_iterator i = map.find(key);
- if (i == map.end()) return Value();
- else return i->second;
- }
-
- /** Associate value with key, overwriting any previous value for key. */
- void put(const Key& key, const Value& value) {
- sys::RWlock::ScopedWlock w(lock);
- map[key] = value;
- }
-
- /** Associate value with key if there is not already a value associated with key.
- * Returns true if the value was added.
- */
- bool add(const Key& key, const Value& value) {
- sys::RWlock::ScopedWlock w(lock);
- return map.insert(key, value).second;
- }
-
- /** Erase the value associated with key if any. Return true if a value was erased. */
- bool erase(const Key& key) {
- sys::RWlock::ScopedWlock w(lock);
- return map.erase(key);
- }
-
- private:
- typedef std::map<Key, Value> Map;
- Map map;
- mutable sys::RWlock lock;
-};
-}} // namespace qpid::cluster
-
-#endif /*!QPID_CLUSTER_LOCKEDMAP_H*/