1 files changed, 128 insertions, 0 deletions

diff --git a/ACE/ace/Monitor_Base.h b/ACE/ace/Monitor_Base.h
new file mode 100644
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--- /dev/null
+++ b/ACE/ace/Monitor_Base.h
@@ -0,0 +1,128 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ * @file Monitor_Base.h
+ *
+ * $Id$
+ *
+ * @author Jeff Parsons <j.parsons@vanderbilt.edu>
+ */
+//=============================================================================
+
+#ifndef MONITOR_BASE_H
+#define MONITOR_BASE_H
+
+#include /**/ "ace/pre.h"
+
+#include "ace/Monitor_Control_Types.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+#pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
+
+#include "ace/Refcountable_T.h"
+#include "ace/Thread_Mutex.h"
+#include "ace/Synch_Traits.h"
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+class ETCL_Constraint;
+
+namespace ACE
+{
+  namespace MonitorControl
+  {
+    class Control_Action;
+
+    /**
+     * @class Monitor_Base
+     *
+     * @brief Base class from which the template monitor point class is
+     *        derived.
+     *
+     * All the operations are pure virtual so they can
+     * be implemented in the 'disabled' template specialization
+     * as no-ops.
+     */
+    class ACE_Export Monitor_Base
+      : private ACE_Refcountable_T<ACE_SYNCH_MUTEX>
+    {
+    public:
+      typedef Monitor_Control_Types::ConstraintList CONSTRAINTS;
+      typedef CONSTRAINTS::const_iterator CONSTRAINT_ITERATOR;
+
+      /// Implemented by the most-derived class. Does the actual
+      /// work of fetching the monitored value.
+      virtual void update (void) = 0;
+
+      /// Updates the monitor's data if it is a numeric floating point.
+      virtual void receive (double value);
+
+      /// Updates the monitor's data if it is an integer size.
+      virtual void receive (size_t value);
+
+      /// Add a constraint, returns a unique constraint id.
+      long add_constraint (const char* expression,
+                           Control_Action* action = 0);
+
+      /// Remove a constraint and return the associated control action,
+      /// which may be shared, for deletion or further use.
+      Control_Action* remove_constraint (const long constraint_id);
+
+      /// Get all constraints
+      CONSTRAINTS& constraints (void);
+
+      /// Reset function.
+      void clear (void);
+
+      /// Data accessors.
+      void retrieve (Monitor_Control_Types::Data& data) const;
+      void retrieve_and_clear (Monitor_Control_Types::Data& data);
+
+      /// Common to all monitors.
+
+      void add_to_registry (
+        const ACE_Time_Value& time = ACE_Time_Value::zero);
+      void remove_from_registry (void);
+
+      const char* name (void) const;
+      void name (const char* new_name);
+
+      void add_ref (void);
+      void remove_ref (void);
+
+    protected:
+      Monitor_Base (void);
+      Monitor_Base (const char* name);
+      virtual ~Monitor_Base (void);
+
+      /// Overridden in some monitors (for example the OS monitors) where
+      /// clearing requires monitor-specific actions.
+      virtual void clear_i (void);
+
+    protected:
+      Monitor_Control_Types::Data data_;
+      mutable ACE_SYNCH_MUTEX mutex_;
+
+      CONSTRAINTS constraints_;
+
+    private:
+      ACE_CString name_;
+    };
+  }
+}
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#if defined (__ACE_INLINE__)
+#include "ace/Monitor_Base.inl"
+#endif /* __ACE_INLINE__ */
+
+#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
+
+#include /**/ "ace/post.h"
+
+#endif // MONITOR_BASE_H