mirror of https://gitee.com/bigwinds/arangodb
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2018 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 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 ArangoDB GmbH, Cologne, Germany
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///
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/// @author Kaveh Vahedipour
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_CONSENSUS_COMPACTOR_H
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#define ARANGOD_CONSENSUS_COMPACTOR_H 1
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#include "Agency/AgencyCommon.h"
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#include "Basics/ConditionVariable.h"
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#include "Basics/Thread.h"
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namespace arangodb {
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namespace consensus {
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// Forward declaration
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class Agent;
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class Compactor : public arangodb::Thread {
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public:
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// @brief Construct with agent pointer
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explicit Compactor(Agent* _agent);
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virtual ~Compactor();
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/// @brief 1. Deal with appendEntries to slaves.
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/// 2. Report success of write processes.
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void run() override final;
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/// @brief Start orderly shutdown of threads
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void beginShutdown() override final;
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/// @brief Wake up compaction
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void wakeUp();
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/// @brief Do compaction
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void compact();
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private:
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Agent* _agent; //< @brief Agent
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// This condition variable is used for the compactor thread to go to
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// sleep. One has to set _wakeupCompactor to true under the Mutex of _cv
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// and then broadcast on the _cv to wake up the compactor thread.
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// Note that the Mutex is not held during the actual compaction!
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basics::ConditionVariable _cv;
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bool _wakeupCompactor;
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long _waitInterval; //< @brief Wait interval
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};
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} // namespace consensus
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} // namespace arangodb
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#endif
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