129 lines
2.8 KiB
C++
129 lines
2.8 KiB
C++
/*
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* Copyright: JessMA Open Source (ldcsaa@gmail.com)
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*
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* Author : Bruce Liang
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* Website : https://github.com/ldcsaa
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* Project : https://github.com/ldcsaa/HP-Socket
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* Blog : http://www.cnblogs.com/ldcsaa
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* Wiki : http://www.oschina.net/p/hp-socket
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* QQ Group : 44636872, 75375912
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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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#pragma once
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#include "hpsocket/GlobalDef.h"
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#include "CriSec.h"
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#include <shared_mutex>
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#include <condition_variable>
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using namespace std;
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class CMutexRWLock
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{
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public:
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VOID WaitToRead();
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VOID WaitToWrite();
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VOID ReadDone();
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VOID WriteDone();
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private:
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BOOL IsOwner() {return ::IsSelfThread(m_dwWriterTID);}
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VOID SetOwner() {m_dwWriterTID = SELF_THREAD_ID;}
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VOID DetachOwner() {m_dwWriterTID = 0;}
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public:
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CMutexRWLock();
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~CMutexRWLock();
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DECLARE_NO_COPY_CLASS(CMutexRWLock)
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private:
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int m_nActive;
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THR_ID m_dwWriterTID;
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CSpinGuard m_cs;
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shared_timed_mutex m_mtx;
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};
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class CSEMRWLock
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{
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public:
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VOID WaitToRead();
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VOID WaitToWrite();
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VOID ReadDone();
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VOID WriteDone();
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private:
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BOOL IsOwner() {BOOL bOwner = ::IsSelfThread(m_dwWriterTID); ASSERT(!bOwner || m_nActive < 0); return bOwner;}
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VOID SetOwner() {m_dwWriterTID = SELF_THREAD_ID;}
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VOID DetachOwner() {m_dwWriterTID = 0;}
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public:
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CSEMRWLock();
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~CSEMRWLock();
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DECLARE_NO_COPY_CLASS(CSEMRWLock)
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private:
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int m_nWaitingReaders;
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int m_nWaitingWriters;
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int m_nActive;
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THR_ID m_dwWriterTID;
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CMTX m_mtx;
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condition_variable m_cvRead;
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condition_variable m_cvWrite;
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};
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template<class CLockObj> class CLocalReadLock
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{
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public:
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CLocalReadLock(CLockObj& obj) : m_wait(obj) {m_wait.WaitToRead();}
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~CLocalReadLock() {m_wait.ReadDone();}
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DECLARE_NO_COPY_CLASS(CLocalReadLock)
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private:
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CLockObj& m_wait;
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};
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template<class CLockObj> class CLocalWriteLock
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{
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public:
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CLocalWriteLock(CLockObj& obj) : m_wait(obj) {m_wait.WaitToWrite();}
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~CLocalWriteLock() {m_wait.WriteDone();}
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DECLARE_NO_COPY_CLASS(CLocalWriteLock)
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private:
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CLockObj& m_wait;
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};
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using CSimpleRWLock = shared_timed_mutex;
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using CReadLock = shared_lock<shared_timed_mutex>;
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using CWriteLock = lock_guard<shared_timed_mutex>;
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using CWriteLock2 = unique_lock<shared_timed_mutex>;
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#if !defined(_USE_MUTEX_RW_LOCK)
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using CRWLock = CSEMRWLock;
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#else
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using CRWLock = CMutexRWLock;
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#endif
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using CReentrantReadLock = CLocalReadLock<CRWLock>;
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using CReentrantWriteLock = CLocalWriteLock<CRWLock>;
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