15fe5a1d41
git-svn-id: http://mc-server.googlecode.com/svn/trunk@1072 0a769ca7-a7f5-676a-18bf-c427514a06d6
81 lines
1.4 KiB
C++
81 lines
1.4 KiB
C++
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#pragma once
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class cCriticalSection
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{
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public:
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cCriticalSection(void);
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~cCriticalSection();
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void Lock(void);
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void Unlock(void);
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#ifdef _DEBUG
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bool IsLocked(void);
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bool IsLockedByCurrentThread(void);
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#endif // _DEBUG
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private:
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#ifdef _DEBUG
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int m_IsLocked; // Number of times this CS is locked
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unsigned long m_OwningThreadID;
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#endif // _DEBUG
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#ifdef _WIN32
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CRITICAL_SECTION m_CriticalSection;
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#else // _WIN32
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pthread_mutex_t m_CriticalSection;
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pthread_mutexattr_t m_Attributes;
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#endif // else _WIN32
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} ALIGN_8;
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/// RAII for cCriticalSection - locks the CS on creation, unlocks on destruction
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class cCSLock
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{
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cCriticalSection * m_CS;
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// Unlike a cCriticalSection, this object should be used from a single thread, therefore access to m_IsLocked is not threadsafe
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// In Windows, it is an error to call cCriticalSection::Unlock() multiple times if the lock is not held,
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// therefore we need to check this value whether we are locked or not.
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bool m_IsLocked;
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public:
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cCSLock(cCriticalSection * a_CS);
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cCSLock(cCriticalSection & a_CS);
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~cCSLock();
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// Temporarily unlock or re-lock:
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void Lock(void);
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void Unlock(void);
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private:
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DISALLOW_COPY_AND_ASSIGN(cCSLock);
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} ;
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/// Temporary RAII unlock for a cCSLock. Useful for unlock-wait-relock scenarios
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class cCSUnlock
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{
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cCSLock & m_Lock;
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public:
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cCSUnlock(cCSLock & a_Lock);
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~cCSUnlock();
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private:
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DISALLOW_COPY_AND_ASSIGN(cCSUnlock);
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} ;
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