1 files changed, 150 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..feba800d772
--- /dev/null
+++ b/TAO/orbsvcs/orbsvcs/CosEvent/CEC_Reactive_Pulling_Strategy.h
@@ -0,0 +1,150 @@
+// -*- 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);
+
+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 */