1 files changed, 104 insertions, 0 deletions
diff --git a/TAO/tao/LF_Event.cpp b/TAO/tao/LF_Event.cpp
new file mode 100644
index 00000000000..3b03c0b59ad
--- /dev/null
+++ b/TAO/tao/LF_Event.cpp
@@ -0,0 +1,104 @@
+// -*- C++ -*-
+// $Id$
+
+#include "tao/LF_Event.h"
+#include "tao/LF_Follower.h"
+#include "tao/Leader_Follower.h"
+
+#if !defined (__ACE_INLINE__)
+# include "tao/LF_Event.inl"
+#endif /* __ACE_INLINE__ */
+
+ACE_RCSID(tao, LF_Event, "$Id$")
+
+TAO_LF_Event::TAO_LF_Event (void)
+  : state_ (TAO_LF_Event::LFS_IDLE)
+  , follower_ (0)
+{
+}
+
+TAO_LF_Event::~TAO_LF_Event (void)
+{
+}
+
+void
+TAO_LF_Event::state_changed (int new_state)
+{
+  if (this->follower_ == 0)
+    {
+      this->state_changed_i (new_state);
+    }
+  else
+    {
+      TAO_Leader_Follower &leader_follower =
+        this->follower_->leader_follower ();
+
+      ACE_GUARD (TAO_SYNCH_MUTEX, ace_mon, leader_follower.lock ());
+
+      this->state_changed_i (new_state);
+
+      this->follower_->signal ();
+    }
+}
+
+void
+TAO_LF_Event::state_changed_i (int new_state)
+{
+  if (this->state_ == new_state)
+    return;
+
+  // Validate the state change
+  if (this->state_ == TAO_LF_Event::LFS_IDLE)
+    {
+      // From the LFS_IDLE state we can only become active.
+      if (new_state == TAO_LF_Event::LFS_ACTIVE
+          || new_state == TAO_LF_Event::LFS_CONNECTION_CLOSED)
+        this->state_ = new_state;
+      return;
+    }
+  else if (this->state_ == TAO_LF_Event::LFS_ACTIVE)
+    {
+      // From LFS_ACTIVE we can only move to a few states
+      if (new_state != TAO_LF_Event::LFS_IDLE)
+        {
+          if (new_state == TAO_LF_Event::LFS_CONNECTION_CLOSED)
+            {
+              this->state_ = TAO_LF_Event::LFS_FAILURE;
+            }
+          else
+            {
+              this->state_ = new_state;
+            }
+        }
+      return;
+    }
+  else if (this->state_ == TAO_LF_Event::LFS_SUCCESS
+           || this->state_ == TAO_LF_Event::LFS_CONNECTION_CLOSED)
+    {
+      // From the two states above we can go back to ACTIVE, as when a
+      // request is restarted.
+      if (new_state == TAO_LF_Event::LFS_ACTIVE)
+        {
+          this->state_ = new_state;
+        }
+      return;
+    }
+  else /* if (this->state_ == TAO_LF_Event::LFS_TIMEOUT || FAILURE ) */
+    {
+      // Other states are final...
+    }
+}
+
+int
+TAO_LF_Event::successful (void) const
+{
+  return this->state_ == TAO_LF_Event::LFS_SUCCESS;
+}
+
+int
+TAO_LF_Event::error_detected (void) const
+{
+  return (this->state_ == TAO_LF_Event::LFS_FAILURE
+          || this->state_ == TAO_LF_Event::LFS_TIMEOUT
+          || this->state_ == TAO_LF_Event::LFS_CONNECTION_CLOSED);
+}