nidas::util::RWLock Class Reference

A C++ wrapper for a POSIX rwlock. More...

#include <ThreadSupport.h>

Public Member Functions
	RWLock () throw ()
	Construct a POSIX rwlock. More...
	RWLock (const RWLockAttributes &attr) throw (Exception)
	RWLock (const RWLock &x) throw ()
	Copy constructor. More...
	~RWLock ()
	Destruct a RWLock. More...
void	rdlock () throw (Exception)
	Acquire a read lock. More...
void	wrlock () throw (Exception)
	Acquire a write lock. More...
void	unlock () throw (Exception)
	Unlock the RWLock. More...
pthread_rwlock_t *	ptr ()
	Get the pointer to the pthread_rwlock_t. More...

Private Member Functions
RWLock &	operator= (const RWLock &)
	No assignment allowed. More...

Private Attributes
pthread_rwlock_t	_p_rwlock
RWLockAttributes	_attrs

Detailed Description

A C++ wrapper for a POSIX rwlock.

Constructor & Destructor Documentation

RWLock::RWLock	(		)
throw	(
	)

Construct a POSIX rwlock.

See man page for pthread_rwlock_init.

RWLock::RWLock	(	const RWLockAttributes &	attr	)
throw	(	Exception
	)

RWLock::RWLock	(	const RWLock &	x	)
throw	(
	)

Copy constructor.

Creates a new, unlocked rwlock.

RWLock::~RWLock

(

)

Destruct a RWLock.

See man page for pthread_rwlock_destroy. RwLock must not be locked, otherwise std::terminate() is called.

References _p_rwlock, CLOG, and nidas::util::Exception::what().

Member Function Documentation

RWLock& nidas::util::RWLock::operator= ( const RWLock &  )

private

No assignment allowed.

pthread_rwlock_t * RWLock::ptr

(

)

Get the pointer to the pthread_rwlock_t.

References _p_rwlock.

void nidas::util::RWLock::rdlock ( ) throw ( Exception )

inline

Acquire a read lock.

May throw an exception if the maximum number of read locks for this RWLock has been exceeded.

Referenced by nidas::dynld::UDPSampleOutput::getProjectDOM().

void nidas::util::RWLock::unlock ( ) throw ( Exception )

inline

Unlock the RWLock.

Will throw an exception EPERM if the current thread does not hold a lock.

Referenced by nidas::dynld::UDPSampleOutput::releaseProjectDOM().

void nidas::util::RWLock::wrlock ( ) throw ( Exception )

inline

Acquire a write lock.

May throw an exception if the current thread already owns the lock.

Member Data Documentation

RWLockAttributes nidas::util::RWLock::_attrs

private

pthread_rwlock_t nidas::util::RWLock::_p_rwlock

private

Referenced by ptr(), and ~RWLock().

---

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

• nidas/util/ThreadSupport.h
• nidas/util/ThreadSupport.cc