RWTWriteLockGuard<Resource>

Module:  Threads   Package:  Synchronization

RWTWriteLockGuard<Resource>  RWTWriteLockGuardBase<Resource>

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Members

operator=()

ResourceType

RWTWriteLockGuard()

~RWTWriteLockGuard()

#include <rw/sync/RWTWriteLockGuard.h> 

RWTWriteLockGuard<Resource> is a guard class that acquires write access on its resource upon creation and releases it upon destruction. Guard objects work in conjunction with block statements in such a way as to establish an appropriate state upon creation, maintain that state for the duration of the block, and restore the original state upon destruction. For example, a guard may acquire write access on a mutex upon creation and release it when destructed. The class used as the actual template parameter for Resource must be one that provides acquireWrite and release methods (such as the synchronization classes provided in this module).

#include <rw/sync/RWReadersWriterLock.h>
#include <rw/sync/RWTWriteLockGuard.h>

// ...
RWReadersWriterLock rwlock;

void foo()
{  
   // acquire write access:
   RWTWriteLockGuard<RWReaderWritersLock> lock(rwlock);   
  
   // ... critical section

   // lock will be released in RWTWriteLockGuard destructor 
   // before leaving scope, especially important if an exception
   // might be thrown!
}

typedef Resource     ResourceType;

RWTWriteLockGuard(Resource& resource);

Constructs an instance with the given resource and acquires write access on that resource. (The resource will be released in the destructor of the base class.)

~RWTWriteLockGuard();

Destructor.

RWTWriteLockGuard(const RWTWriteLockGuard<Resource>& second);

Copy constructor prohibited.

RWTWriteLockGuard<Resource>&
operator=(const RWTWriteLockGuard<Resource>& second);

Assignment prohibited.

RWTTryWriteLockGuard<Resource>, RWTWriteUnlockGuard<Resource>

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