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- /*
- * Copyright: JessMA Open Source (ldcsaa@gmail.com)
- *
- * Version : 2.3.15
- * Author : Bruce Liang
- * Website : http://www.jessma.org
- * Project : https://github.com/ldcsaa
- * Blog : http://www.cnblogs.com/ldcsaa
- * Wiki : http://www.oschina.net/p/hp-socket
- * QQ Group : 75375912
- *
- * 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.
- */
- #pragma once
- #include "CriticalSection.h"
- #include "Semaphore.h"
- class CSWMR
- {
- public:
- VOID WaitToRead();
- VOID WaitToWrite();
- VOID ReadDone() {Done();}
- VOID WriteDone() {Done();}
- private:
- VOID Done();
- public:
- CSWMR();
- ~CSWMR();
- private:
- CSWMR(const CSWMR&);
- CSWMR operator = (const CSWMR&);
- private:
- int m_nWaitingReaders;
- int m_nWaitingWriters;
- int m_nActive;
- CSpinGuard m_cs;
- CSEM m_smRead;
- CSEM m_smWrite;
- };
- #if _WIN32_WINNT >= _WIN32_WINNT_WS08
- class CSlimLock
- {
- public:
- VOID WaitToRead() {::AcquireSRWLockShared(&m_lock);}
- VOID WaitToWrite() {::AcquireSRWLockExclusive(&m_lock);}
- VOID ReadDone() {::ReleaseSRWLockShared(&m_lock);}
- VOID WriteDone() {::ReleaseSRWLockExclusive(&m_lock);}
- BOOL TryWaitToRead() {return ::TryAcquireSRWLockShared(&m_lock);}
- BOOL TryWaitToWrite() {return ::TryAcquireSRWLockExclusive(&m_lock);}
- SRWLOCK* GetObject() {return &m_lock;}
- public:
- CSlimLock() {::InitializeSRWLock(&m_lock);}
- ~CSlimLock() {}
- private:
- CSlimLock(const CSlimLock&);
- CSlimLock operator = (const CSlimLock&);
- private:
- SRWLOCK m_lock;
- };
- class CSlimRWLock
- {
- public:
- VOID WaitToRead();
- VOID WaitToWrite();
- VOID ReadDone();
- VOID WriteDone();
- private:
- BOOL IsOwner() {return m_dwWriterTID == ::GetCurrentThreadId();}
- VOID SetOwner() {m_dwWriterTID = ::GetCurrentThreadId();}
- VOID DetachOwner() {m_dwWriterTID = 0;}
- public:
- CSlimRWLock();
- ~CSlimRWLock();
- private:
- CSlimRWLock(const CSlimRWLock&);
- CSlimRWLock operator = (const CSlimRWLock&);
- private:
- int m_nActive;
- int m_nReadCount;
- DWORD m_dwWriterTID;
- CSpinGuard m_cs;
- CSlimLock m_smLock;
- };
- #endif
- class CSEMRWLock
- {
- public:
- VOID WaitToRead();
- VOID WaitToWrite();
- VOID ReadDone();
- VOID WriteDone();
- private:
- VOID Done (CSEM** ppSem, LONG& lCount);
- BOOL IsOwner() {return m_dwWriterTID == ::GetCurrentThreadId();}
- VOID SetOwner() {m_dwWriterTID = ::GetCurrentThreadId();}
- VOID DetachOwner() {m_dwWriterTID = 0;}
- public:
- CSEMRWLock();
- ~CSEMRWLock();
- private:
- CSEMRWLock(const CSEMRWLock&);
- CSEMRWLock operator = (const CSEMRWLock&);
- private:
- int m_nWaitingReaders;
- int m_nWaitingWriters;
- int m_nActive;
- DWORD m_dwWriterTID;
- CSpinGuard m_cs;
- CSEM m_smRead;
- CSEM m_smWrite;
- };
- template<class CLockObj> class CLocalReadLock
- {
- public:
- CLocalReadLock(CLockObj& obj) : m_wait(obj) {m_wait.WaitToRead();}
- ~CLocalReadLock() {m_wait.ReadDone();}
- private:
- CLocalReadLock(const CLocalReadLock&);
- CLocalReadLock operator = (const CLocalReadLock&);
- private:
- CLockObj& m_wait;
- };
- template<class CLockObj> class CLocalWriteLock
- {
- public:
- CLocalWriteLock(CLockObj& obj) : m_wait(obj) {m_wait.WaitToWrite();}
- ~CLocalWriteLock() {m_wait.WriteDone();}
- private:
- CLocalWriteLock(const CLocalWriteLock&);
- CLocalWriteLock operator = (const CLocalWriteLock&);
- private:
- CLockObj& m_wait;
- };
- #if _WIN32_WINNT >= _WIN32_WINNT_WS08
- typedef CSlimLock CSimpleRWLock;
- #else
- typedef CSWMR CSimpleRWLock;
- #endif
- typedef CLocalReadLock<CSimpleRWLock> CReadLock;
- typedef CLocalWriteLock<CSimpleRWLock> CWriteLock;
- typedef CSEMRWLock CRWLock;
- typedef CLocalReadLock<CRWLock> CReentrantReadLock;
- typedef CLocalWriteLock<CRWLock> CReentrantWriteLock;
- #if _WIN32_WINNT >= _WIN32_WINNT_WS08
- class ICVCondition
- {
- public:
- virtual BOOL Detect() = 0;
- public:
- virtual ~ICVCondition() {}
- };
- class CCVCriSec
- {
- public:
- CCVCriSec(CInterCriSec& cs)
- : m_cs(cs)
- {
- ::InitializeConditionVariable(&m_cv);
- }
- ~CCVCriSec() {}
- void WaitToRead(ICVCondition* pCondition)
- {
- Wait(pCondition);
- }
- void WaitToWrite(ICVCondition* pCondition)
- {
- Wait(pCondition);
- }
- void ReadDone()
- {
- Done();
- }
- void WriteDone()
- {
- Done();
- }
- void WakeUp()
- {
- ::WakeConditionVariable(&m_cv);
- }
- void WakeUpAll()
- {
- ::WakeAllConditionVariable(&m_cv);
- }
- private:
- void Wait(ICVCondition* pCondition)
- {
- ASSERT(pCondition);
- m_cs.Lock();
- while(!pCondition->Detect())
- ::SleepConditionVariableCS(&m_cv, m_cs.GetObject(), INFINITE);
- }
- void Done()
- {
- m_cs.Unlock();
- }
- private:
- CCVCriSec(const CCVCriSec& cs);
- CCVCriSec operator = (const CCVCriSec& cs);
- private:
- CInterCriSec& m_cs;
- CONDITION_VARIABLE m_cv;
- };
- class CCVSlim
- {
- public:
- CCVSlim(CSlimLock& cs)
- : m_cs(cs)
- {
- ::InitializeConditionVariable(&m_cv);
- }
- ~CCVSlim() {}
- void WaitToRead(ICVCondition* pCondition)
- {
- ASSERT(pCondition);
- m_cs.WaitToRead();
- while(!pCondition->Detect())
- ::SleepConditionVariableSRW(&m_cv, m_cs.GetObject(), INFINITE, CONDITION_VARIABLE_LOCKMODE_SHARED);
- }
- void WaitToWrite(ICVCondition* pCondition)
- {
- ASSERT(pCondition);
- m_cs.WaitToWrite();
- while(!pCondition->Detect())
- ::SleepConditionVariableSRW(&m_cv, m_cs.GetObject(), INFINITE, 0);
- }
- void ReadDone()
- {
- m_cs.ReadDone();
- }
- void WriteDone()
- {
- m_cs.WriteDone();
- }
- void WakeUp()
- {
- ::WakeConditionVariable(&m_cv);
- }
- void WakeUpAll()
- {
- ::WakeAllConditionVariable(&m_cv);
- }
- private:
- CCVSlim(const CCVSlim& cs);
- CCVSlim operator = (const CCVSlim& cs);
- private:
- CSlimLock& m_cs;
- CONDITION_VARIABLE m_cv;
- };
- template<class _Lock, class _Var> class CCVGuard
- {
- public:
- void WaitForProduce()
- {
- m_cvP.WaitToWrite(m_pcdtProduce);
- }
- void WaitForConsume()
- {
- m_cvC.WaitToRead(m_pcdtConsume);
- }
- void ProduceDone()
- {
- m_cvP.WriteDone();
- }
- void WakeUpProduce()
- {
- m_cvP.WakeUp();
- }
- void ConsumeDone()
- {
- m_cvC.ReadDone();
- }
- void WakeUpConsume()
- {
- m_cvC.WakeUp();
- }
- void WakeUpAllConsumes()
- {
- m_cvC.WakeUpAll();
- }
- public:
- CCVGuard(ICVCondition* pcdtProduce, ICVCondition* pcdtConsume)
- : m_cvP(m_cs)
- , m_cvC(m_cs)
- , m_pcdtProduce(pcdtProduce)
- , m_pcdtConsume(pcdtConsume)
- {
- ASSERT(m_pcdtConsume && m_pcdtProduce);
- }
- ~CCVGuard() {}
- private:
- CCVGuard(const CCVGuard& cs);
- CCVGuard operator = (const CCVGuard& cs);
- private:
- ICVCondition* m_pcdtProduce;
- ICVCondition* m_pcdtConsume;
- _Lock m_cs;
- _Var m_cvP;
- _Var m_cvC;
- };
- template<class _GuardObj> class CConsumeLock
- {
- public:
- CConsumeLock(_GuardObj& obj) : m_guard(obj) {m_guard.WaitForConsume();}
- ~CConsumeLock() {m_guard.ConsumeDone();}
- private:
- CConsumeLock(const CConsumeLock&);
- CConsumeLock operator = (const CConsumeLock&);
- private:
- _GuardObj& m_guard;
- };
- template<class _GuardObj> class CProduceLock
- {
- public:
- CProduceLock(_GuardObj& obj) : m_guard(obj) {m_guard.WaitForProduce();}
- ~CProduceLock() {m_guard.ProduceDone();}
- private:
- CProduceLock(const CProduceLock&);
- CProduceLock operator = (const CProduceLock&);
- private:
- _GuardObj& m_guard;
- };
- typedef CCVGuard<CInterCriSec, CCVCriSec> CCVGuardCS;
- typedef CCVGuard<CSlimLock, CCVSlim> CCVGuardSRW;
- typedef CProduceLock<CCVGuardCS> CProduceLockCS;
- typedef CConsumeLock<CCVGuardCS> CConsumeLockCS;
- typedef CProduceLock<CCVGuardSRW> CProduceLockSRW;
- typedef CConsumeLock<CCVGuardSRW> CConsumeLockSRW;
- #endif
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