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Diffstat (limited to 'TAO/orbsvcs/orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.h')
-rw-r--r-- | TAO/orbsvcs/orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.h b/TAO/orbsvcs/orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.h new file mode 100644 index 00000000000..43a8735e82b --- /dev/null +++ b/TAO/orbsvcs/orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.h @@ -0,0 +1,151 @@ +// -*- C++ -*- + +//============================================================================= +/** + * @file CEC_Reactive_Pulling_Strategy.h + * + * $Id$ + * + * @author Carlos O'Ryan (coryan@cs.wustl.edu) + */ +//============================================================================= + + +#ifndef TAO_CEC_REACTIVE_PULLING_STRATEGY_H +#define TAO_CEC_REACTIVE_PULLING_STRATEGY_H + +#include /**/ "ace/pre.h" + +#include "orbsvcs/CosEvent/CEC_Pulling_Strategy.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +# pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#include "orbsvcs/ESF/ESF_Worker.h" + +#include "tao/ORB.h" +#include "tao/PolicyC.h" + +#include "ace/Event_Handler.h" + + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +class TAO_CEC_ProxyPullConsumer; +class TAO_CEC_EventChannel; +class TAO_CEC_ConsumerAdmin; +class TAO_CEC_SupplierControl; +class TAO_CEC_Reactive_Pulling_Strategy; + +/** + * @class TAO_CEC_Pulling_Strategy_Adapter + * + * @brief Forwards timeout events to the Reactive Pulling Strategy + * + * The Reactive Pulling Strategy strategy uses the reactor to + * periodically wakeup and try top pull events from each + * PullSupplier connected to the EventChannel. + */ +class TAO_Event_Serv_Export TAO_CEC_Pulling_Strategy_Adapter : public ACE_Event_Handler +{ +public: + /// Constructor + TAO_CEC_Pulling_Strategy_Adapter (TAO_CEC_Reactive_Pulling_Strategy *adaptee); + + // = Documented in ACE_Event_Handler. + virtual int handle_timeout (const ACE_Time_Value &tv, + const void *arg = 0); + +private: + /// The adapted object + TAO_CEC_Reactive_Pulling_Strategy *adaptee_; +}; + +// **************************************************************** + +/** + * @class TAO_CEC_Reactive_Pulling_Strategy + * + * @brief Dispatch using the caller thread. + * + * The events are dispatched in FIFO ordering, using the invoking + * thread to push the event to the consumer. + */ +class TAO_Event_Serv_Export TAO_CEC_Reactive_Pulling_Strategy : public TAO_CEC_Pulling_Strategy +{ +public: + /// The scheduler is used to find the range of priorities and similar + /// info. + TAO_CEC_Reactive_Pulling_Strategy (const ACE_Time_Value &rate, + const ACE_Time_Value &relative_timeout, + TAO_CEC_EventChannel *event_channel, + CORBA::ORB_ptr orb); + + /// Receive the timeout from the adapter + void handle_timeout (const ACE_Time_Value &tv, + const void* arg); + + // = The CEC_Pulling_Strategy methods. + virtual void activate (void); + virtual void shutdown (void); + +private: + /// The Adapter for the reactor events + TAO_CEC_Pulling_Strategy_Adapter adapter_; + + /// The polling rate + ACE_Time_Value rate_; + + /// The relative timeout + ACE_Time_Value relative_timeout_; + + /// The event channel + TAO_CEC_EventChannel *event_channel_; + + /// The ORB + CORBA::ORB_var orb_; + + /// To control the timeout policy in the thread + CORBA::PolicyCurrent_var policy_current_; + + /// Precomputed policy list to the set timeout. + CORBA::PolicyList policy_list_; + + /// The ORB reactor + ACE_Reactor *reactor_; + +#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0 + /// The timer id + long timer_id_; +#endif /* TAO_HAS_CORBA_MESSAGING */ +}; + +// **************************************************************** + +class TAO_CEC_Pull_Event : public TAO_ESF_Worker<TAO_CEC_ProxyPullConsumer> +{ +public: + TAO_CEC_Pull_Event (TAO_CEC_ConsumerAdmin *consumer_admin, + TAO_CEC_SupplierControl *control); + + virtual void work (TAO_CEC_ProxyPullConsumer *consumer + ACE_ENV_ARG_DECL); + +private: + /// Used to propagate the events. + TAO_CEC_ConsumerAdmin *consumer_admin_; + + /// To report failed or dead suppliers + TAO_CEC_SupplierControl *supplier_control_; +}; + +TAO_END_VERSIONED_NAMESPACE_DECL + +#if defined (__ACE_INLINE__) +#include "orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.inl" +#endif /* __ACE_INLINE__ */ + +#include /**/ "ace/post.h" + +#endif /* TAO_CEC_REACTIVE_PULLING_STRATEGY_H */ |