ChangeLogTag:Sat Apr 27 16:54:22 2002 Balachandran Natarajan <bala@cs.wustl.edu>

1 files changed, 76 insertions, 0 deletions

diff --git a/TAO/tao/Connect_Strategy.h b/TAO/tao/Connect_Strategy.h
new file mode 100644
index 00000000000..000198a083e
--- /dev/null
+++ b/TAO/tao/Connect_Strategy.h
@@ -0,0 +1,76 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file Connect_Strategy.h
+ *
+ *  $Id$
+ *
+ *  @author Balachandran Natarajan <bala@cs.wustl.edu>
+ */
+//=============================================================================
+
+#ifndef TAO_CONNECT_STRATEGY_H
+#define TAO_CONNECT_STRATEGY_H
+#include "ace/pre.h"
+
+#include "TAO_Export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+class TAO_ORB_Core;
+class TAO_Connector;
+class TAO_Connection_Handler;
+class ACE_Synch_Options;
+class ACE_Time_Value;
+
+/**
+ * @class TAO_Connect_Strategy
+ *
+ * @brief Define the interface for the connect strategy, i.e. the
+ *  algorithm that controls how does the ORB establishes remote
+ *  connections.
+ *
+ * The thread that establishes remote connections can either make a
+ * blocking or a non-blocking connect. The strategy to wait for the
+ * connection completion can also be different.
+ *
+ * This strategy controls how does the ORB schedules and waits for
+ * connection completion.
+ */
+
+class TAO_Export TAO_Connect_Strategy
+{
+public:
+
+  /// Constructor
+  TAO_Connect_Strategy (TAO_ORB_Core *orb);
+
+  /// Destructor
+  virtual ~TAO_Connect_Strategy (void);
+
+  /* Return the synch option for the connector, based on the timeout
+   * and the strategy in place. ACE_Connectors behavior can be altered
+   * by passing the right ACE_Synch_Options to the connect () call.
+   */
+  virtual void synch_options (ACE_Time_Value *val,
+                              ACE_Synch_Options &opt) = 0;
+
+  /* Wait for the connection to be completed and return a transport
+   * whose reference count has been incremented. If the connection
+   * establishment fails this method returns a null transport
+   * indicating the failure of connection.
+   */
+  virtual int wait (TAO_Connection_Handler *ch,
+                    ACE_Time_Value *val) = 0;
+protected:
+
+  /// Cached copy of the ORB core pointer
+  TAO_ORB_Core *orb_core_;
+};
+
+
+
+#endif /*TAO_CONNECT_STRATEGY_H*/