vrecko::MTReadWriteLock Class Reference

#include <MTLock.h>

Public Member Functions
	MTReadWriteLock ()
	~MTReadWriteLock ()
bool	lockRead (DWORD Timeout=INFINITE)
bool	lockWrite (DWORD Timeout=INFINITE)
void	unlockRead (DWORD Timeout=INFINITE)
void	unlockWrite (DWORD Timeout=INFINITE)

Protected Attributes
HANDLE	m_Access
int	m_Readers
HANDLE	m_WriterMutex
HANDLE	m_CanRead
HANDLE	m_CanWrite

Detailed Description

ReadWrite locks are from the following article by Ivan Krivyakov: http://www.codeguru.com/cpp/w-p/system/misc/article.php/c5679

MTReadWriteLock is a read/write mutex.

Any number of readers can acquire the mutex for read (LockRead()). Only single writer can acquire the mutex for write (LockWrite()). No other writers or readers can hold the mutex while writer uses it.

MTReadWriteLock does not prefer neither writers nor readers. I.e. if both writers and readers are waiting for the lock, any of them can grab the lock when it is released by previous owner.

MTReadWriteLock is recursive, but not upgradable. This means that

if you have a read lock, you can safely acquire another read lock. if you have a read lock, you CANNOT acquire a write lock (deadlock!).

if you have a write lock, you can safely acquire another write lock. if you have a write lock, you CANNOT acquire a read lock (deadlock!).

Constructor & Destructor Documentation

vrecko::MTReadWriteLock::MTReadWriteLock

(

)

vrecko::MTReadWriteLock::~MTReadWriteLock

(

)

Member Function Documentation

MTLOCK_IMP_EXP bool vrecko::MTReadWriteLock::lockRead

(

DWORD

Timeout = INFINITE

)

MTLOCK_IMP_EXP bool vrecko::MTReadWriteLock::lockWrite

(

DWORD

Timeout = INFINITE

)

MTLOCK_IMP_EXP void vrecko::MTReadWriteLock::unlockRead

(

DWORD

Timeout = INFINITE

)

MTLOCK_IMP_EXP void vrecko::MTReadWriteLock::unlockWrite

(

DWORD

Timeout = INFINITE

)

Member Data Documentation

HANDLE vrecko::MTReadWriteLock::m_Access

protected

HANDLE vrecko::MTReadWriteLock::m_CanRead

protected

HANDLE vrecko::MTReadWriteLock::m_CanWrite

protected

int vrecko::MTReadWriteLock::m_Readers

protected

HANDLE vrecko::MTReadWriteLock::m_WriterMutex

protected

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The documentation for this class was generated from the following files:

• C:/Documents/School/OSG/VRECKO/include/vrecko/MTLock.h
• C:/Documents/School/OSG/VRECKO/src/vrecko/MTLock.cpp