void
TAO_EC_Default_ProxyPushConsumer::connect_push_supplier (
RtecEventComm::PushSupplier_ptr push_supplier,
const RtecEventChannelAdmin::SupplierQOS& qos)
{
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ RtecEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->event_channel_->supplier_reconnect () == 0)
throw RtecEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed, go ahead and disconnect the
// consumer...
this->cleanup_i ();
// @@ Please read the comments in EC_ProxySuppliers about
// possible race conditions in this area...
TAO_EC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_EC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ RtecEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->reconnected (this);
}
// A separate thread could have connected siomultaneously,
// this is probably an application error, handle it as
// gracefully as possible
if (this->is_connected_i ())
return; // @@ Should we throw
}
this->supplier_ =
RtecEventComm::PushSupplier::_duplicate (push_supplier);
this->connected_ = 1;
this->qos_ = qos;
#if TAO_EC_ENABLE_DEBUG_MESSAGES
ORBSVCS_DEBUG ((LM_DEBUG,
"Building filter for supplier <%x>.\n",
this));
#endif /* TAO_EC_ENABLED_DEBUG_MESSAGES */
this->filter_ =
this->event_channel_->supplier_filter_builder ()->create (this->qos_);
this->filter_->bind (this);
}
// Notify the event channel...
this->event_channel_->connected (this);
}
CORBA::Boolean
TAO_PG_ObjectGroupManager::valid_type_id (
PortableGroup::ObjectGroup_ptr object_group,
TAO_PG_ObjectGroup_Map_Entry * group_entry,
CORBA::Object_ptr member)
{
// @todo Strategize this -- e.g. strict type checking.
if (CORBA::is_nil (member))
throw CORBA::BAD_PARAM ();
// Before we can use this code, i.e. the reverse lock, the
// TAO_PG_ObjectGroup_Entry should be made so that it is reference
// counted. This is necessary since releasing the lock would
// allow other threads to destroy/unbind the object group entry.
// Another alternative is to simply attempt to reacquire the
// object group map entry once the lock is reacquired, which is
// easier to implement.
// Copy the type_id before releasing the lock to avoid a race
// condition.
CORBA::String_var type_id =
CORBA::string_dup (group_entry->type_id.in ());
CORBA::Boolean right_type_id = 0;
{
// Release the lock during the type_id check. No need to block
// other threads during the invocation.
ACE_Reverse_Lock<TAO_SYNCH_MUTEX> reverse_lock (this->lock_);
ACE_GUARD_RETURN (ACE_Reverse_Lock<TAO_SYNCH_MUTEX>,
reverse_guard,
reverse_lock,
right_type_id);
// Make sure an Object of the correct type was created. It is
// possible that an object of the wrong type was created if the
// type_id parameter does not match the type of object the
// GenericFactory creates.
right_type_id =
member->_is_a (type_id.in ());
}
// Make sure the group entry still exists. It may have been
// destroyed by another thread. (Call throws if problem.)
static_cast<void> (this->get_group_entry (object_group));
return right_type_id;
}
void
TAO_EC_ProxyPushSupplier::push (const RtecEventComm::EventSet& event,
TAO_EC_QOS_Info& qos_info)
{
// The mutex is already held by the caller (usually the filter()
// method)
if (!this->is_connected_i ())
return; // TAO_THROW (RtecEventComm::Disconnected ());????
if (this->suspended_)
return;
TAO_ESF_RefCount_Guard<CORBA::ULong> ace_mon (this->refcount_);
// The guard will decrement the reference count, notice that the
// reference count can become 0, but this is not the right spot to
// check for that and destroy the object.
// If we did so then we would destroy the object, and consequently
// the mutex, but the mutex is used later when the stack unwinds and
// the filter() method tries to destroy the mutex (that originally
// acquired the mutex in the first place).
// So the correct thing to do is to just decrement the reference
// count and let the filter() method do the destruction.
RtecEventComm::PushConsumer_var consumer =
RtecEventComm::PushConsumer::_duplicate (this->consumer_.in ());
this->pre_dispatch_hook (const_cast<RtecEventComm::EventSet&> (event));
{
// We have to release the lock to avoid dead-locks.
TAO_EC_Unlock reverse_lock (*this->lock_);
ACE_GUARD_THROW_EX (TAO_EC_Unlock, ace_mon, reverse_lock,
RtecEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->dispatching ()->push (this,
consumer.in (),
event,
qos_info);
}
if (this->child_ != 0)
this->child_->clear ();
}
void
TAO_CEC_ProxyPushConsumer::connect_push_supplier (
CosEventComm::PushSupplier_ptr push_supplier)
{
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->event_channel_->supplier_reconnect () == 0)
throw CosEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed, go ahead and disconnect the
// consumer...
this->cleanup_i ();
// @@ Please read the comments in CEC_ProxyPushSupplier about
// possible race conditions in this area...
TAO_CEC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_CEC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->disconnected (this);
}
// What if a second thread connected us after this?
if (this->is_connected_i ())
return;
}
this->supplier_ = apply_policy (push_supplier);
this->connected_ = true;
}
// Notify the event channel...
this->event_channel_->connected (this);
}
void
TAO_CEC_ProxyPullSupplier::connect_pull_consumer (
CosEventComm::PullConsumer_ptr pull_consumer)
{
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->event_channel_->consumer_reconnect () == 0)
throw CosEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed....
this->cleanup_i ();
this->consumer_ = apply_policy (pull_consumer);
this->connected_ = 1;
TAO_CEC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_CEC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->reconnected (this);
}
return;
}
this->consumer_ = apply_policy (pull_consumer);
this->connected_ = 1;
}
// Notify the event channel...
this->event_channel_->connected (this);
}
void
TAO_CEC_ProxyPushSupplier::push_nocopy (CORBA::Any &event)
{
Destroy_Guard auto_destroy (this->refcount_,
this->event_channel_,
this);
{
ACE_GUARD (ACE_Lock, ace_mon, *this->lock_);
if (this->is_connected_i () == 0)
return;
TAO_ESF_RefCount_Guard<CORBA::ULong> cnt_mon (this->refcount_);
{
TAO_CEC_Unlock reverse_lock (*this->lock_);
ACE_GUARD (TAO_CEC_Unlock, ace_mon, reverse_lock);
this->event_channel_->dispatching ()->push_nocopy (this,
event);
}
}
}
void
TAO_CEC_ProxyPushSupplier::invoke (const TAO_CEC_TypedEvent& typed_event)
{
Destroy_Guard_Typed auto_destroy (this->refcount_,
this->typed_event_channel_,
this);
{
ACE_GUARD (ACE_Lock, ace_mon, *this->lock_);
if (this->is_connected_i () == 0)
return;
TAO_ESF_RefCount_Guard<CORBA::ULong> cnt_mon (this->refcount_);
{
TAO_CEC_Unlock reverse_lock (*this->lock_);
ACE_GUARD (TAO_CEC_Unlock, ace_mon, reverse_lock);
this->typed_event_channel_->dispatching ()->invoke (this,
typed_event);
}
}
}
void
TAO_EC_Default_ProxyPushSupplier::connect_push_consumer (
RtecEventComm::PushConsumer_ptr push_consumer,
const RtecEventChannelAdmin::ConsumerQOS& qos)
{
// Nil PushConsumers are illegal
if (CORBA::is_nil (push_consumer))
throw CORBA::BAD_PARAM ();
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ RtecEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->event_channel_->consumer_reconnect () == 0)
throw RtecEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed....
this->cleanup_i ();
this->consumer_ =
RtecEventComm::PushConsumer::_duplicate (push_consumer);
this->qos_ = qos;
this->child_ =
this->event_channel_->filter_builder ()->build (this,
this->qos_);
this->adopt_child (this->child_);
TAO_EC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_EC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ RtecEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->reconnected (this);
}
// A separate thread could have connected simultaneously,
// this is probably an application error, handle it as
// gracefully as possible
if (this->is_connected_i ())
return; // @@ Should we throw
}
#if (TAO_HAS_CORBA_MESSAGING == 1)
if ( consumer_validate_connection_ == 1 )
{
// Validate connection during connect.
CORBA::PolicyList_var unused;
int status = push_consumer->_validate_connection (unused);
#if TAO_EC_ENABLE_DEBUG_MESSAGES
ORBSVCS_DEBUG ((LM_DEBUG, "Validated connection to PushConsumer on connect. Status[%d]\n", status));
#else
ACE_UNUSED_ARG(status);
#endif /* TAO_EC_ENABLED_DEBUG_MESSAGES */
}
#endif /* TAO_HAS_CORBA_MESSAGING == 1 */
this->consumer_ =
RtecEventComm::PushConsumer::_duplicate (push_consumer);
this->qos_ = qos;
#if TAO_EC_ENABLE_DEBUG_MESSAGES
ORBSVCS_DEBUG ((LM_DEBUG,
"Building filters for consumer <%x>.\n",
this));
#endif /* TAO_EC_ENABLED_DEBUG_MESSAGES */
this->child_ =
this->event_channel_->filter_builder ()->build (this,
this->qos_);
this->adopt_child (this->child_);
}
// Notify the event channel...
this->event_channel_->connected (this);
}
PortableGroup::ObjectGroup_ptr
TAO_PG_ObjectGroupManager::remove_member (
PortableGroup::ObjectGroup_ptr object_group,
const PortableGroup::Location & the_location)
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, guard, this->lock_, 0);
TAO_PG_ObjectGroup_Map_Entry * group_entry =
this->get_group_entry (object_group);
TAO_PG_ObjectGroup_Array * groups = 0;
if (this->location_map_.find (the_location, groups) != 0)
throw PortableGroup::ObjectGroupNotFound ();
// Multiple members from different object groups may reside at the
// same location. Iterate through the list to attempt to find a
// match for the exact object group. If no match, -1 is returned.
int to_be_removed = this->get_object_group_position (*groups, group_entry);
if (to_be_removed == -1)
throw PortableGroup::ObjectGroupNotFound ();
// remove the element from the array and resize the array.
this->remove_entry_from_groups (to_be_removed, groups);
TAO_PG_MemberInfo_Set & member_infos = group_entry->member_infos;
TAO_PG_MemberInfo_Set::iterator end = member_infos.end ();
for (TAO_PG_MemberInfo_Set::iterator iter = member_infos.begin ();
iter != end;
++iter)
{
const TAO_PG_MemberInfo & info = *iter;
if (info.location == the_location)
{
// Give the GenericFactory a chance to delete a member if
// its membership is under infrastructure control.
if (this->generic_factory_)
{
CORBA::ULong group_id = group_entry->group_id;
// Release the lock during the factory delete_member()
// which may invoke delete_object()on registered factory.
// No need to block other threads during the invocation.
ACE_Reverse_Lock<TAO_SYNCH_MUTEX> reverse_lock (this->lock_);
ACE_GUARD_RETURN (ACE_Reverse_Lock<TAO_SYNCH_MUTEX>,
reverse_guard,
reverse_lock,
PortableGroup::ObjectGroup::_nil ());
this->generic_factory_->delete_member (group_id,
the_location);
}
if (member_infos.remove (info) == 0)
{
if (this->generic_factory_)
{
this->generic_factory_->check_minimum_number_members (
object_group,
group_entry->group_id,
group_entry->type_id.in ());
}
return PortableGroup::ObjectGroup::_duplicate (object_group);
}
else
break;
}
}
throw PortableGroup::MemberNotFound ();
}
void
TAO_CEC_ProxyPushSupplier::connect_push_consumer (
CosEventComm::PushConsumer_ptr push_consumer)
{
// Nil PushConsumers are illegal
if (CORBA::is_nil (push_consumer))
throw CORBA::BAD_PARAM ();
{
#if defined (TAO_HAS_TYPED_EVENT_CHANNEL)
// Check if we have a typed event channel
if (this->is_typed_ec () )
{
if (TAO_debug_level >= 10)
{
ORBSVCS_DEBUG ((LM_DEBUG,
ACE_TEXT ("***** connect_push_consumer, ")
ACE_TEXT ("Event channel is typed *****\n")));
}
// Temporary for the TypedPushConsumer and it's Typed interface,
// declared and obtained before the Guard to avoid deadlock during the
// _is_a (during _narrow) and get_typed_consumer invocations.
// They are eventually assigned onto this object inside the Guard.
CosTypedEventComm::TypedPushConsumer_var local_typed_consumer =
CosTypedEventComm::TypedPushConsumer::_narrow (push_consumer);
// Obtain the typed object interface from the consumer
CORBA::Object_var local_typed_consumer_obj =
CORBA::Object::_duplicate (local_typed_consumer->get_typed_consumer () );
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->typed_event_channel_->consumer_reconnect () == 0)
throw CosEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed....
this->cleanup_i ();
this->typed_consumer_ = apply_policy (local_typed_consumer.in () );
TAO_CEC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_CEC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->typed_event_channel_->reconnected (this);
}
return;
}
this->typed_consumer_ = apply_policy (local_typed_consumer.in () );
// Store the typed object interface from the consumer
this->typed_consumer_obj_ =
apply_policy_obj (local_typed_consumer_obj.in () );
}
// Notify the event channel...
this->typed_event_channel_->connected (this);
} /* this->is_typed_ec */
else
{
#endif /* TAO_HAS_TYPED_EVENT_CHANNEL */
if (TAO_debug_level >= 10)
{
ORBSVCS_DEBUG ((LM_DEBUG,
ACE_TEXT ("***** connect_push_consumer, ")
ACE_TEXT ("Event channel is un-typed *****\n")));
}
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->event_channel_->consumer_reconnect () == 0)
throw CosEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed....
this->cleanup_i ();
this->consumer_ = apply_policy (push_consumer);
TAO_CEC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_CEC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->reconnected (this);
}
return;
}
this->consumer_ = apply_policy (push_consumer);
}
// Notify the event channel...
this->event_channel_->connected (this);
#if defined (TAO_HAS_TYPED_EVENT_CHANNEL)
} /* ! this->is_typed_ec */
#endif /* TAO_HAS_TYPED_EVENT_CHANNEL */
}
}