1 files changed, 68 insertions, 0 deletions
diff --git a/TAO/tao_ace/IO_Event_Handler.h b/TAO/tao_ace/IO_Event_Handler.h
new file mode 100644
index 00000000000..c165b6cb42b
--- /dev/null
+++ b/TAO/tao_ace/IO_Event_Handler.h
@@ -0,0 +1,68 @@
+/* -*- C++ -*- */
+
+//=============================================================================
+/**
+ *  @file    IO_Event_Handler.h
+ *
+ *  $Id$
+ *
+ *  @author Balachandran Natarajan <bala@cs.wustl.edu>
+ */
+//=============================================================================
+
+#ifndef TAO_ACE_IO_EVENT_HANDLER_H
+#define TAO_ACE_IO_EVENT_HANDLER_H
+#include "ace/pre.h"
+#include "IO_Event_Masks.h"
+
+
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "Reactive_Handler.h"
+
+/**
+ * @class TAO_ACE_IO_Event_Handler
+ *
+ * @brief Provides an abstract interface for handling socket events.
+ *
+ * @@ todo<Bala>: Write comments
+ */
+
+class TAO_ACE_Export TAO_ACE_IO_Event_Handler: public TAO_ACE_Reactive_Handler
+{
+public:
+
+
+  /* Callback function that invokes the right callback method based
+   * on the type of mask that is passed via <t>. The mask should
+   * indicate only one event. Sending a bitwise 'or' or 'and' of many
+   * events will lead to none of the events being handled.
+   */
+  virtual int handle_event (TAO_ACE_IO_Event_Masks::Event_Masks t =
+                            TAO_ACE_IO_Event_Masks::NULL_MASK);
+
+  /// Get/Set the handle of the underlying socket
+  virtual ACE_HANDLE get_handle (void) = 0;
+  virtual void set_handle (ACE_HANDLE h) = 0;
+protected:
+
+  /// Called when input events occur (e.g., connection or data).
+  virtual int handle_input (ACE_HANDLE fd = ACE_INVALID_HANDLE) = 0;
+
+  /// Called when output events are possible (e.g., when flow control
+  /// abates or non-blocking connection completes).
+  virtual int handle_output (ACE_HANDLE fd = ACE_INVALID_HANDLE) = 0;
+
+  /// Called when an exceptional events occur (e.g., SIGURG).
+  virtual int handle_exception (ACE_HANDLE fd = ACE_INVALID_HANDLE) = 0;
+
+private:
+
+};
+
+
+#include "ace/post.h"
+#endif /*TAO_ACE_IO_EVENT_HANDLER_H*/