OpenDDS::DCPS::WeakObject Class Reference

#include <RcObject.h>

Inheritance diagram for OpenDDS::DCPS::WeakObject:

Collaboration diagram for OpenDDS::DCPS::WeakObject:

Public Member Functions
	WeakObject (RcObject *ptr)
void	_add_ref ()
void	_remove_ref ()
RcObject *	lock ()
bool	set_expire ()
Private Attributes
ACE_Atomic_Op< ACE_SYNCH_MUTEX, long >	ref_count_
ACE_SYNCH_MUTEX	mx_
RcObject *const	ptr_
bool	expired_

Detailed Description

Definition at line 22 of file RcObject.h.

Constructor & Destructor Documentation

OpenDDS::DCPS::WeakObject::WeakObject ( RcObject * ptr ) [inline]

Definition at line 25 of file RcObject.h.

00026       : ref_count_(1)
00027       , ptr_(ptr)
00028       , expired_(false)
00029     {
00030     }

Member Function Documentation

void OpenDDS::DCPS::WeakObject::_add_ref ( void ) [inline]

Definition at line 32 of file RcObject.h.

References ref_count_.

Referenced by OpenDDS::DCPS::RcObject::_get_weak_object(), and OpenDDS::DCPS::WeakRcHandle< DataReaderImpl_T< MessageType > >::WeakRcHandle().

00032                     {
00033       ++this->ref_count_;
00034     }

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void OpenDDS::DCPS::WeakObject::_remove_ref ( void ) [inline]

Definition at line 36 of file RcObject.h.

References ref_count_.

Referenced by OpenDDS::DCPS::WeakRcHandle< DataReaderImpl_T< MessageType > >::reset(), OpenDDS::DCPS::RcObject::~RcObject(), and OpenDDS::DCPS::WeakRcHandle< DataReaderImpl_T< MessageType > >::~WeakRcHandle().

00036                       {
00037       const long new_count = --this->ref_count_;
00038 
00039       if (new_count == 0) {
00040         delete this;
00041       }
00042     }

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RcObject * OpenDDS::DCPS::WeakObject::lock ( void ) [inline]

Definition at line 101 of file RcObject.h.

References OpenDDS::DCPS::RcObject::_add_ref(), expired_, mx_, and ptr_.

Referenced by OpenDDS::DCPS::WeakRcHandle< DataReaderImpl_T< MessageType > >::lock().

00102   {
00103     ACE_Guard<ACE_SYNCH_MUTEX> guard(mx_);
00104     if (! expired_) {
00105       ptr_->_add_ref();
00106       return ptr_;
00107     }
00108     return 0;
00109   }

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bool OpenDDS::DCPS::WeakObject::set_expire ( ) [inline]

Definition at line 112 of file RcObject.h.

References expired_, mx_, ptr_, and OpenDDS::DCPS::RcObject::ref_count().

Referenced by OpenDDS::DCPS::RcObject::_remove_ref().

00113   {
00114     ACE_Guard<ACE_SYNCH_MUTEX> guard(mx_);
00115     if (!expired_ && ptr_->ref_count() == 0) {
00116       expired_ = true;
00117     }
00118     return expired_;
00119   }