summaryrefslogtreecommitdiff
path: root/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.h
diff options
context:
space:
mode:
Diffstat (limited to 'TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.h')
-rw-r--r--TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.h152
1 files changed, 152 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.h b/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.h
new file mode 100644
index 00000000000..cb6120a511f
--- /dev/null
+++ b/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.h
@@ -0,0 +1,152 @@
+// -*- C++ -*-
+/**
+ * @file EC_Reactive_ConsumerControl.h
+ *
+ * $Id$
+ *
+ * @author Carlos O'Ryan (coryan@cs.wustl.edu)
+ *
+ * Based on previous work by Tim Harrison (harrison@cs.wustl.edu) and
+ * other members of the DOC group. More details can be found in:
+ *
+ * http://doc.ece.uci.edu/~coryan/EC/index.html
+ */
+
+#ifndef TAO_EC_REACTIVE_CONSUMERCONTROL_H
+#define TAO_EC_REACTIVE_CONSUMERCONTROL_H
+
+#include /**/ "ace/pre.h"
+
+#include "orbsvcs/Event/EC_ConsumerControl.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_EC_Event_Channel_Base;
+
+class TAO_EC_Reactive_ConsumerControl;
+
+/**
+ * @class TAO_EC_ConsumerControl_Adapter
+ *
+ * @brief Forwards timeout events to the Reactive ConsumerControl
+ *
+ * The Reactive ConsumerControl strategy uses the reactor to
+ * periodically wakeup and verify the state of the consumers
+ * registered with the Event Channel.
+ */
+class TAO_RTEvent_Serv_Export TAO_EC_ConsumerControl_Adapter : public ACE_Event_Handler
+{
+public:
+ /// Constructor
+ TAO_EC_ConsumerControl_Adapter (TAO_EC_Reactive_ConsumerControl *adaptee);
+
+ // = Documented in ACE_Event_Handler.
+ virtual int handle_timeout (const ACE_Time_Value &tv,
+ const void *arg = 0);
+
+private:
+ /// The adapted object
+ TAO_EC_Reactive_ConsumerControl *adaptee_;
+};
+
+/**
+ * @class TAO_EC_Reactive_ConsumerControl
+ *
+ * @brief ConsumerControl
+ *
+ * Defines the interface for the consumer control strategy.
+ * This strategy handles misbehaving or failing consumers.
+ */
+class TAO_RTEvent_Serv_Export TAO_EC_Reactive_ConsumerControl : public TAO_EC_ConsumerControl
+{
+public:
+ /// Constructor. It does not assume ownership of the @a event_channel
+ /// parameter.
+ TAO_EC_Reactive_ConsumerControl (const ACE_Time_Value &rate,
+ const ACE_Time_Value &timeout,
+ TAO_EC_Event_Channel_Base *event_channel,
+ CORBA::ORB_ptr orb);
+
+ /// Destructor.
+ virtual ~TAO_EC_Reactive_ConsumerControl (void);
+
+ /// Receive the timeout from the adapter
+ void handle_timeout (const ACE_Time_Value &tv,
+ const void* arg);
+
+ // = Documented in TAO_EC_ConsumerControl
+ virtual int activate (void);
+ virtual int shutdown (void);
+ virtual void consumer_not_exist (TAO_EC_ProxyPushSupplier *proxy);
+ virtual void system_exception (TAO_EC_ProxyPushSupplier *proxy,
+ CORBA::SystemException &);
+
+private:
+ /// Check if the consumers still exists. It is a helper method for
+ /// handle_timeout() to isolate the exceptions.
+ void query_consumers (void);
+
+private:
+ /// The polling rate
+ ACE_Time_Value rate_;
+
+ /// The polling timeout
+ ACE_Time_Value timeout_;
+
+ /// The Adapter for the reactor events
+ TAO_EC_ConsumerControl_Adapter adapter_;
+
+ /// The event channel
+ TAO_EC_Event_Channel_Base *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_EC_Ping_Consumer : public TAO_ESF_Worker<TAO_EC_ProxyPushSupplier>
+{
+public:
+ TAO_EC_Ping_Consumer (TAO_EC_ConsumerControl *control);
+
+ virtual void work (TAO_EC_ProxyPushSupplier *supplier);
+
+private:
+ TAO_EC_ConsumerControl *control_;
+};
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+#if defined (__ACE_INLINE__)
+#include "orbsvcs/Event/EC_Reactive_ConsumerControl.inl"
+#endif /* __ACE_INLINE__ */
+
+#include /**/ "ace/post.h"
+
+#endif /* TAO_EC_CONSUMERCONTROL_H */