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arangodb/lib/Basics/SpinLock.cpp

56 lines
2.0 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 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 Dr. Frank Celler
/// @author Achim Brandt
////////////////////////////////////////////////////////////////////////////////
#include "SpinLock.h"
using namespace triagens::basics;
////////////////////////////////////////////////////////////////////////////////
/// @brief constructs a spinlock
////////////////////////////////////////////////////////////////////////////////
SpinLock::SpinLock() : _lock() { TRI_InitSpin(&_lock); }
////////////////////////////////////////////////////////////////////////////////
/// @brief deletes the lock
////////////////////////////////////////////////////////////////////////////////
SpinLock::~SpinLock() { TRI_DestroySpin(&_lock); }
////////////////////////////////////////////////////////////////////////////////
/// @brief acquires the lock
////////////////////////////////////////////////////////////////////////////////
void SpinLock::lock() { TRI_LockSpin(&_lock); }
////////////////////////////////////////////////////////////////////////////////
/// @brief releases the lock
////////////////////////////////////////////////////////////////////////////////
void SpinLock::unlock() { TRI_UnlockSpin(&_lock); }