1 files changed, 71 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/Shutdown_Utilities.h b/TAO/orbsvcs/orbsvcs/Shutdown_Utilities.h
new file mode 100644
index 00000000000..2663a13d407
--- /dev/null
+++ b/TAO/orbsvcs/orbsvcs/Shutdown_Utilities.h
@@ -0,0 +1,71 @@
+// -*- C++ -*-
+
+#ifndef _SHUTDOWN_UTILS_H
+#define _SHUTDOWN_UTILS_H
+#include /**/ "ace/pre.h"
+
+// $Id$
+
+#include "orbsvcs/svc_utils_export.h"
+
+#include "tao/Versioned_Namespace.h"
+
+#include "ace/Event_Handler.h"
+#include "ace/Signal.h"
+#include "ace/Sig_Handler.h"
+
+
+TAO_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * \brief Abstract definition for a Functor that shuts down a particular service.
+ *
+ * When subclassing, the developer should provide a constructor or
+ * other initialization method that somehow couples an instance of the
+ * functor to the service implementation.  She should also provide an
+ * implementation of operator()(int which_signal) that actually performs
+ * the shutdown.
+ */
+class TAO_Svc_Utils_Export Shutdown_Functor
+{
+public:
+  virtual void operator() (int which_signal) = 0;
+
+protected:
+  Shutdown_Functor (void) {}
+  virtual ~Shutdown_Functor (void) {}
+};
+
+/**
+ * \brief Class that permits graceful shutdown of a service.
+ *
+ * Services require graceful shutdown.  Sending a SIGTERM (which is
+ * what Ctrl-C does on Unix) should trigger a graceful shutdown, not
+ * simply a graceful termination of the process.
+ *
+ * This class can be used to capture signals and gracefully shut down
+ * the service.
+ */
+class TAO_Svc_Utils_Export Service_Shutdown : public ACE_Event_Handler
+{
+public:
+  Service_Shutdown (Shutdown_Functor& sf);
+  Service_Shutdown (Shutdown_Functor& sf, ACE_Sig_Set& which_signals);
+  ~Service_Shutdown ();
+
+  void set_signals (ACE_Sig_Set& which_signals);
+
+  virtual int handle_signal (int which_sig,
+                             siginfo_t* siginfo,
+                             ucontext_t* context);
+
+protected:
+  Shutdown_Functor& functor_;
+  ACE_Sig_Handler   shutdown_;
+  ACE_Sig_Set       registered_signals_;
+};
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+#include /**/ "ace/post.h"
+#endif