mirror of https://gitee.com/bigwinds/arangodb
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 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 Dr. Frank Celler
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/// @author Achim Brandt
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////////////////////////////////////////////////////////////////////////////////
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#include "SpinLocker.h"
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#ifdef TRI_SHOW_LOCK_TIME
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#include "Basics/logging.h"
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#endif
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using namespace triagens::basics;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief aquires a lock
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///
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/// The constructor aquires a lock, the destructor releases the lock.
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////////////////////////////////////////////////////////////////////////////////
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#ifdef TRI_SHOW_LOCK_TIME
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////////////////////////////////////////////////////////////////////////////////
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/// @brief aquires a lock
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///
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/// The constructor aquires a lock, the destructor releases the lock.
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////////////////////////////////////////////////////////////////////////////////
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SpinLocker::SpinLocker(SpinLock* lock, char const* file, int line)
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: _lock(lock), _file(file), _line(line) {
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double t = TRI_microtime();
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_lock->lock();
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_time = TRI_microtime() - t;
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}
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#else
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SpinLocker::SpinLocker(SpinLock* lock) : _lock(lock) { _lock->lock(); }
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/// @brief releases the lock
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////////////////////////////////////////////////////////////////////////////////
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SpinLocker::~SpinLocker() {
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_lock->unlock();
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#ifdef TRI_SHOW_LOCK_TIME
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if (_time > TRI_SHOW_LOCK_THRESHOLD) {
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LOG_WARNING("SpinLocker %s:%d took %f s", _file, _line, _time);
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}
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#endif
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}
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