1 files changed, 92 insertions, 0 deletions
diff --git a/TAO/tao/LF_CH_Event.h b/TAO/tao/LF_CH_Event.h
new file mode 100644
index 00000000000..0ac940f66dc
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+++ b/TAO/tao/LF_CH_Event.h
@@ -0,0 +1,92 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file LF_CH_Event.h
+ *
+ *  $Id$
+ *
+ *  @author Balachandran Natarajan <bala@cs.wustl.edu>
+ */
+//=============================================================================
+#ifndef TAO_LF_CH_EVENT_H
+#define TAO_LF_CH_EVENT_H
+#include "ace/pre.h"
+
+#include "LF_Event.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+/**
+ * @class TAO_LF_CH_Event
+ *
+ * @brief Use the Leader/Follower loop to wait for one specific event
+ * in the invocation path.
+ *
+ * Concrete event types and manipulation class which is used for
+ * connection handleing purposes.
+ */
+class TAO_Export TAO_LF_CH_Event: public TAO_LF_Event
+{
+public:
+  /// Constructor
+  TAO_LF_CH_Event (void);
+
+  /// Destructor
+  virtual ~TAO_LF_CH_Event (void);
+
+  /// Return 1 if the condition was satisfied successfully, 0 if it
+  /// has not
+  int successful (void) const;
+
+  /// Return 1 if an error was detected while waiting for the
+  /// event
+  int error_detected (void) const;
+  //@}
+
+  /// Reset the state, irrespective of the previous states
+  void reset_state (int new_state);
+
+
+private:
+  /// Validate and change the state
+  /*
+   * This concrete class uses the following states declared in the
+   * class TAO_LF_Event to transition states
+   *
+   * LFS_IDLE              - The event is created, and is in initial
+   *                         state.
+   * LFS_CONNECTION_WAIT   - The event is waiting for connection
+   *                         completion and it can transition to any of
+   *                         the following states, all the states are
+   *                         final.
+   * LFS_SUCCESS           - The event, connection establishment, has
+   *                         completed successfully.
+   * LFS_TIMEOUT           - The event has timed out.
+   * LFS_CONNECTION_CLOSED - The connection was closed since an error
+   *                         occured while trying to establish
+   *                         connection
+   *
+   */
+  virtual void state_changed_i (int new_state);
+
+  /// Check whether we have reached the final state..
+  virtual int is_state_final (void);
+
+  /// Set the state irrespective of anything.
+  virtual void set_state (int new_state);
+
+private:
+
+  /// The previous state that the LF_CH_Event was in
+  int prev_state_;
+};
+
+#if defined (__ACE_INLINE__)
+# include "LF_Invocation_Event.inl"
+#endif /* __ACE_INLINE__ */
+
+#include "ace/post.h"
+#endif  /* TAO_LF_CH_EVENT_H */