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Diffstat (limited to 'TAO/orbsvcs/orbsvcs/CosEvent/CEC_TypedProxyPushConsumer.h')
-rw-r--r-- | TAO/orbsvcs/orbsvcs/CosEvent/CEC_TypedProxyPushConsumer.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/CosEvent/CEC_TypedProxyPushConsumer.h b/TAO/orbsvcs/orbsvcs/CosEvent/CEC_TypedProxyPushConsumer.h new file mode 100644 index 00000000000..547df4ccbfd --- /dev/null +++ b/TAO/orbsvcs/orbsvcs/CosEvent/CEC_TypedProxyPushConsumer.h @@ -0,0 +1,196 @@ +// -*- C++ -*- + +//============================================================================= +/** + * @file CEC_TypedProxyPushConsumer.h + * + * $Id$ + * + * @author Jon Astle (jon@astle45.fsnet.co.uk) + * + * Based on the untyped version by Carlos O'Ryan (coryan@cs.wustl.edu) + */ +//============================================================================= + + +#ifndef TAO_CEC_TYPEDPROXYPUSHCONSUMER_H_ +#define TAO_CEC_TYPEDPROXYPUSHCONSUMER_H_ +#include /**/ "ace/pre.h" + +#include "orbsvcs/CosTypedEventChannelAdminS.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +#pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#include "orbsvcs/ESF/ESF_Worker.h" +#include "orbsvcs/CosEvent/event_serv_export.h" + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +class TAO_CEC_TypedEvent; +class TAO_CEC_TypedEventChannel; +class TAO_CEC_DynamicImplementationServer; + +//Class TAO_CEC_TypedProxyPushConsumer +class TAO_Event_Serv_Export TAO_CEC_TypedProxyPushConsumer + : public virtual POA_CosTypedEventChannelAdmin::TypedProxyPushConsumer +{ +public: + typedef CosTypedEventChannelAdmin::TypedProxyPushConsumer_ptr _ptr_type; + typedef CosTypedEventChannelAdmin::TypedProxyPushConsumer_var _var_type; + + //Constructor + TAO_CEC_TypedProxyPushConsumer ( + TAO_CEC_TypedEventChannel* typed_event_channel, + const ACE_Time_Value &timeout + ); + + //Destructor + virtual ~TAO_CEC_TypedProxyPushConsumer (void); + + /// Activate in the POA + virtual void activate ( + CosTypedEventChannelAdmin::TypedProxyPushConsumer_ptr &activated_proxy); + + /// Deactivate from the POA + virtual void deactivate (void); + + /** + * Invoke the _non_existent() pseudo-operation on the supplier. If + * it is disconnected then it returns true and sets the + * <disconnected> flag. + */ + CORBA::Boolean supplier_non_existent (CORBA::Boolean_out disconnected); + + /// The event channel is shutting down + virtual void shutdown (void); + + /// Increment and decrement the reference count. + CORBA::ULong _incr_refcnt (void); + CORBA::ULong _decr_refcnt (void); + + // = The CosEventChannelAdmin::ProxyPushConsumer methods (abstract overloads)... + virtual void connect_push_supplier ( + CosEventComm::PushSupplier_ptr push_supplier); + + virtual void push (const CORBA::Any& event); + + virtual void invoke (const TAO_CEC_TypedEvent& typed_event); + + virtual void disconnect_push_consumer (void); + + // = The CosTypedEventComm::TypedPushConsumer methods (abstract overloads)... + virtual CORBA::Object_ptr get_typed_consumer ( + ); + + // = The Servant methods + virtual PortableServer::POA_ptr _default_POA (void); + virtual void _add_ref (void); + virtual void _remove_ref (void); + +protected: + // The guard needs access to the following protected methods. + friend class TAO_CEC_TypedProxyPushConsumer_Guard; + + /// The private version (without locking) of is_connected(). + CORBA::Boolean is_connected_i (void) const; + + /// Release the supplier + void cleanup_i (void); + + /// Assigns the parameter to both supplier_ and nopolicy_supplier_, and + /// applies policies (when appropriate) to supplier_. + CosEventComm::PushSupplier_ptr apply_policy + (CosEventComm::PushSupplier_ptr pre); + +private: + /// The typed supplier admin, used for activation and memory managment. + TAO_CEC_TypedEventChannel* typed_event_channel_; + + ACE_Time_Value timeout_; + + /// The locking strategy. + ACE_Lock* lock_; + + /// The reference count. + CORBA::ULong refcount_; + + /// The typed supplier -- use apply_policy() instead of assigning directly to + /// typed_supplier_. This will keep typed_supplier_ and + /// nopolicy_typed_supplier_ in sync. + CosEventComm::PushSupplier_var typed_supplier_; + + /// The typed supplier without any policies applied + CosEventComm::PushSupplier_var nopolicy_typed_supplier_; + + /// The DSI impl + TAO_CEC_DynamicImplementationServer* dsi_impl_; + + /// The DSI Portable Server OID + PortableServer::ObjectId_var oid_; + + /// If the flag is not zero then we are connected, notice that the + /// supplier can be nil. + int connected_; + + /// Store the default POA. + PortableServer::POA_var default_POA_; +}; + +// **************************************************************** + +/** + * @class TAO_CEC_TypedProxyPushConsumer_Guard + * + * @brief A Guard for the TypedProxyPushConsumer reference count + * + * This is a helper class used in the implementation of + * TypedProxyPushConumer. It provides a Guard mechanism to increment + * the reference count on the proxy, eliminating the need to hold + * mutexes during long operations. + */ +class TAO_Event_Serv_Export TAO_CEC_TypedProxyPushConsumer_Guard +{ +public: + /// Constructor + TAO_CEC_TypedProxyPushConsumer_Guard ( + ACE_Lock *lock, + CORBA::ULong &refcount, + TAO_CEC_TypedEventChannel *ec, + TAO_CEC_TypedProxyPushConsumer *proxy + ); + + /// Destructor + ~TAO_CEC_TypedProxyPushConsumer_Guard (void); + + /// Returns 1 if the reference count successfully acquired + int locked (void) const; + +private: + /// The lock used to protect the reference count + ACE_Lock *lock_; + + /// The reference count + CORBA::ULong &refcount_; + + /// The event channel used to destroy the proxy + TAO_CEC_TypedEventChannel *typed_event_channel_; + + /// The proxy whose lifetime is controlled by the reference count + TAO_CEC_TypedProxyPushConsumer *proxy_; + + /// This flag is set to 1 if the reference count was successfully + /// acquired. + int locked_; +}; + +TAO_END_VERSIONED_NAMESPACE_DECL + +#if defined (__ACE_INLINE__) +#include "orbsvcs/CosEvent/CEC_TypedProxyPushConsumer.inl" +#endif /* __ACE_INLINE__ */ + +#include /**/ "ace/post.h" + +#endif /* TAO_CEC_TYPEDPROXYPUSHCONSUMER_H_ */ |