mirror of https://gitee.com/bigwinds/arangodb
144 lines
5.2 KiB
C++
144 lines
5.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief Write-ahead log logfile remover thread
|
|
///
|
|
/// @file
|
|
///
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
|
|
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
|
|
///
|
|
/// Licensed 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.
|
|
///
|
|
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// @author Jan Steemann
|
|
/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
|
|
/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGODB_WAL_REMOVER_THREAD_H
|
|
#define ARANGODB_WAL_REMOVER_THREAD_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
#include "Basics/ConditionVariable.h"
|
|
#include "Basics/Mutex.h"
|
|
#include "Basics/Thread.h"
|
|
|
|
namespace triagens {
|
|
namespace wal {
|
|
|
|
class LogfileManager;
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- class RemoverThread
|
|
// -----------------------------------------------------------------------------
|
|
|
|
class RemoverThread : public basics::Thread {
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief RemoverThread
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
private:
|
|
RemoverThread (RemoverThread const&) = delete;
|
|
RemoverThread& operator= (RemoverThread const&) = delete;
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- constructors and destructors
|
|
// -----------------------------------------------------------------------------
|
|
|
|
public:
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief create the remover thread
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
RemoverThread (LogfileManager*);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief destroy the remover thread
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
~RemoverThread ();
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- public methods
|
|
// -----------------------------------------------------------------------------
|
|
|
|
public:
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief stops the remover thread
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void stop ();
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- Thread methods
|
|
// -----------------------------------------------------------------------------
|
|
|
|
protected:
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief main loop
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void run ();
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- private variables
|
|
// -----------------------------------------------------------------------------
|
|
|
|
private:
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief the logfile manager
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
LogfileManager* _logfileManager;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief condition variable for the collector thread
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
basics::ConditionVariable _condition;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief stop flag
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
volatile sig_atomic_t _stop;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief wait interval for the collector thread when idle
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
static uint64_t const Interval;
|
|
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- END-OF-FILE
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Local Variables:
|
|
// mode: outline-minor
|
|
// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
|
|
// End:
|