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// $Id$
#ifndef TAO_ESF_COPY_ON_WRITE_CPP
#define TAO_ESF_COPY_ON_WRITE_CPP
#include "orbsvcs/ESF/ESF_Copy_On_Write.h"
#if ! defined (__ACE_INLINE__)
#include "orbsvcs/ESF/ESF_Copy_On_Write.inl"
#endif /* __ACE_INLINE__ */
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
template<class COLLECTION, class ITERATOR> CORBA::ULong
TAO_ESF_Copy_On_Write_Collection<COLLECTION,ITERATOR>::_incr_refcnt (void)
{
// LOCKING: no locking is required, the caller grabs the mutex.
return this->refcount_++;
}
template<class COLLECTION, class ITERATOR> CORBA::ULong
TAO_ESF_Copy_On_Write_Collection<COLLECTION,ITERATOR>::_decr_refcnt (void)
{
// LOCKING: no locking is required, the caller grabs the mutex.
{
--this->refcount_;
if (this->refcount_ != 0)
return this->refcount_;
}
ITERATOR end = this->collection.end ();
for (ITERATOR i = this->collection.begin (); i != end; ++i)
{
(*i)->_decr_refcnt ();
}
delete this;
return 0;
}
// ****************************************************************
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL>
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
TAO_ESF_Copy_On_Write (void)
: pending_writes_ (0),
writing_ (0),
cond_ (mutex_)
{
ACE_NEW (this->collection_, Collection);
}
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL>
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
~TAO_ESF_Copy_On_Write (void)
{
ACE_GUARD (ACE_SYNCH_MUTEX_T, ace_mon, this->mutex_);
while (this->pending_writes_ != 0)
this->cond_.wait ();
this->collection_->_decr_refcnt ();
this->collection_ = 0;
}
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL> void
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
for_each (TAO_ESF_Worker<PROXY> *worker)
{
Read_Guard ace_mon (this->mutex_,
this->collection_);
worker->set_size(ace_mon.collection->collection.size());
ITERATOR end = ace_mon.collection->collection.end ();
for (ITERATOR i = ace_mon.collection->collection.begin (); i != end; ++i)
{
worker->work (*i);
}
}
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL> void
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
connected (PROXY *proxy)
{
Write_Guard ace_mon (this->mutex_,
this->cond_,
this->pending_writes_,
this->writing_,
this->collection_);
proxy->_incr_refcnt ();
ace_mon.copy->collection.connected (proxy);
}
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL> void
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
reconnected (PROXY *proxy)
{
Write_Guard ace_mon (this->mutex_,
this->cond_,
this->pending_writes_,
this->writing_,
this->collection_);
proxy->_incr_refcnt ();
ace_mon.copy->collection.reconnected (proxy);
}
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL> void
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
disconnected (PROXY *proxy)
{
Write_Guard ace_mon (this->mutex_,
this->cond_,
this->pending_writes_,
this->writing_,
this->collection_);
ace_mon.copy->collection.disconnected (proxy);
}
template<class PROXY, class COLLECTION, class ITERATOR, ACE_SYNCH_DECL> void
TAO_ESF_Copy_On_Write<PROXY,COLLECTION,ITERATOR,ACE_SYNCH_USE>::
shutdown (void)
{
// We need to perform a copy to follow the protocol.
Write_Guard ace_mon (this->mutex_,
this->cond_,
this->pending_writes_,
this->writing_,
this->collection_);
ace_mon.copy->collection.shutdown ();
}
template<class COLLECTION, class ITERATOR, ACE_SYNCH_DECL>
TAO_ESF_Copy_On_Write_Write_Guard<COLLECTION,ITERATOR,ACE_SYNCH_USE>::
TAO_ESF_Copy_On_Write_Write_Guard (ACE_SYNCH_MUTEX_T &m,
ACE_SYNCH_CONDITION_T &c,
int &p,
int &w,
Collection*& cr)
: copy (0),
mutex (m),
cond (c),
pending_writes (p),
writing_flag (w),
collection (cr)
{
{
ACE_GUARD (ACE_SYNCH_MUTEX_T, ace_mon, this->mutex);
this->pending_writes++;
while (this->writing_flag != 0)
this->cond.wait ();
this->writing_flag = 1;
}
// Copy outside the mutex, because it may take a long time.
// Nobody can change it, because it is protected by the
// writing_flag.
// First initialize it (with the correct reference count
ACE_NEW (this->copy, Collection);
// Copy the contents
this->copy->collection = this->collection->collection;
// Increase the reference counts
ITERATOR end = this->copy->collection.end ();
for (ITERATOR i = this->copy->collection.begin (); i != end; ++i)
{
(*i)->_incr_refcnt ();
}
}
template<class COLLECTION, class ITERATOR, ACE_SYNCH_DECL>
TAO_ESF_Copy_On_Write_Write_Guard<COLLECTION,ITERATOR,ACE_SYNCH_USE>::
~TAO_ESF_Copy_On_Write_Write_Guard (void)
{
Collection *tmp = 0;
{
ACE_GUARD (ACE_SYNCH_MUTEX_T, ace_mon, this->mutex);
tmp = this->collection;
this->collection = this->copy;
this->writing_flag = 0;
this->pending_writes--;
this->cond.signal ();
}
// Delete outside the mutex, because it may take a long time.
tmp->_decr_refcnt ();
}
// ****************************************************************
TAO_END_VERSIONED_NAMESPACE_DECL
#endif /* TAO_ESF_COPY_ON_WRITE_CPP */
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