mirror of https://gitee.com/bigwinds/arangodb
93 lines
2.6 KiB
C
93 lines
2.6 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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////////////////////////////////////////////////////////////////////////////////
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#ifndef LIB_BASICS_LOCKS_WIN32_H
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#define LIB_BASICS_LOCKS_WIN32_H 1
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#include "Basics/Common.h"
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#ifdef TRI_HAVE_WIN32_THREADS
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////////////////////////////////////////////////////////////////////////////////
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/// @brief mutex type
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_mutex_s {
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// as of VS2013, exclusive SRWLocks tend to be faster than native mutexes
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#if TRI_WINDOWS_VISTA_LOCKS
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HANDLE _mutex;
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#else
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SRWLOCK _mutex;
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#endif
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} TRI_mutex_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief spin-lock type
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////////////////////////////////////////////////////////////////////////////////
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#ifdef TRI_FAKE_SPIN_LOCKS
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#define TRI_spin_t TRI_mutex_t
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#define TRI_InitSpin TRI_InitMutex
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#define TRI_DestroySpin TRI_DestroyMutex
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#define TRI_LockSpin TRI_LockMutex
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#define TRI_UnlockSpin TRI_UnlockMutex
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#else
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#define TRI_spin_t CRITICAL_SECTION
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/// @brief read-write-lock type
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_read_write_lock_s {
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#if TRI_WINDOWS_VISTA_LOCKS
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HANDLE _writerEvent;
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HANDLE _readersEvent;
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int _readers;
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CRITICAL_SECTION _lockWriter;
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CRITICAL_SECTION _lockReaders;
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#else
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SRWLOCK _lock;
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#endif
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} TRI_read_write_lock_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief condition variable
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_condition_s {
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CRITICAL_SECTION _lockWaiters;
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CONDITION_VARIABLE _conditionVariable;
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} TRI_condition_t;
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#endif
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#endif
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