mirror of https://gitee.com/bigwinds/arangodb
124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief "safe" collection read lock
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2004-2012 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2011-2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_UTILS_COLLECTION_READ_LOCK_H
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#define TRIAGENS_UTILS_COLLECTION_READ_LOCK_H 1
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#include "VocBase/primary-collection.h"
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using namespace std;
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namespace triagens {
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namespace arango {
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// -----------------------------------------------------------------------------
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// --SECTION-- class CollectionReadLock
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// -----------------------------------------------------------------------------
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class CollectionReadLock {
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoDB
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief CollectionReadLock
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////////////////////////////////////////////////////////////////////////////////
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private:
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CollectionReadLock (const CollectionReadLock&);
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CollectionReadLock& operator= (const CollectionReadLock&);
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors and destructors
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoDB
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create the lock
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////////////////////////////////////////////////////////////////////////////////
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CollectionReadLock (TRI_primary_collection_t* primary) : _primary(primary) {
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_primary->beginRead(_primary);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy the lock
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////////////////////////////////////////////////////////////////////////////////
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~CollectionReadLock () {
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_primary->endRead(_primary);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- private variables
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoDB
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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private:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief the collection
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////////////////////////////////////////////////////////////////////////////////
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TRI_primary_collection_t* _primary;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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};
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}
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}
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#endif
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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