Threads::ReadWriteLock Class Reference

Lock that permits multiple readers to lock the object at the same time, but it will not allow any readers when writelocked, and no writelock is allowed when readlocked. More...

Public Member Functions
	ReadWriteLock ()
	ReadWriteLock (const ReadWriteLock &)
virtual	~ReadWriteLock ()
void	readLock ()
	No writers will be active. More...
bool	tryReadLock ()
	No writers will be active. More...
void	writeLock ()
	No readers will be active. More...
bool	tryWriteLock ()
	No readers will be active. More...
void	permissiveWriteLock ()
void	readUnLock ()
void	writeUnLock ()
void	permissiveWriteUnLock ()
bool	convReadToWriteLock ()
void	convWriteToReadLock ()
	Lock MUST be writeLocked when calling. More...
void	convPermissiveToWriteLock ()
void	convWriteToPermissive ()

Protected Attributes
int	nrreaders_
char	status_
ConditionVar	statuscond_

Detailed Description

Lock that permits multiple readers to lock the object at the same time, but it will not allow any readers when writelocked, and no writelock is allowed when readlocked.

Constructor & Destructor Documentation

Threads::ReadWriteLock::ReadWriteLock

(

)

Threads::ReadWriteLock::ReadWriteLock

(

const ReadWriteLock &

)

virtual Threads::ReadWriteLock::~ReadWriteLock ( )

virtual

Member Function Documentation

void Threads::ReadWriteLock::convPermissiveToWriteLock

(

)

bool Threads::ReadWriteLock::convReadToWriteLock

(

)

Lock MUST be readLocked when calling. Object Will always be in write-lock status on return.

Returns

false if it had to release the readlock when switching to writelock.

void Threads::ReadWriteLock::convWriteToPermissive

(

)

void Threads::ReadWriteLock::convWriteToReadLock

(

)

Lock MUST be writeLocked when calling.

void Threads::ReadWriteLock::permissiveWriteLock

(

)

Same as readlock, but I'm guaranteed to convert to writelock without giving up my lock. Only one thread may have the permissive write lock at any given time.

void Threads::ReadWriteLock::permissiveWriteUnLock

(

)

void Threads::ReadWriteLock::readLock

(

)

No writers will be active.

void Threads::ReadWriteLock::readUnLock

(

)

bool Threads::ReadWriteLock::tryReadLock

(

)

No writers will be active.

bool Threads::ReadWriteLock::tryWriteLock

(

)

No readers will be active.

void Threads::ReadWriteLock::writeLock

(

)

No readers will be active.

void Threads::ReadWriteLock::writeUnLock

(

)

Member Data Documentation

int Threads::ReadWriteLock::nrreaders_

protected

char Threads::ReadWriteLock::status_

protected

ConditionVar Threads::ReadWriteLock::statuscond_

protected