ACE/ace/Monitor_Control/Windows_Multi_Instance_Monitor.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  * @file Windows_Multi_Instance_Monitor.h
   6  *
   7  * @author Jeff Parsons <j.parsons@vanderbilt.edu>
   8  */
   9 //=============================================================================
  10
  11 #ifndef WINDOWS_MULTI_INSTANCE_MONITOR_H
  12 #define WINDOWS_MULTI_INSTANCE_MONITOR_H
  13
  14 #include /**/ "ace/pre.h"
  15
  16 #include "ace/Unbounded_Queue.h"
  17
  18 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  19 #pragma once
  20 #endif /* ACE_LACKS_PRAGMA_ONCE */
  21
  22 #include "ace/Monitor_Control/Windows_Monitor.h"
  23
  24 #if defined (ACE_HAS_WIN32_PDH)
  25
  26 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  27
  28 namespace ACE
  29 {
  30   namespace Monitor_Control
  31   {
  32     /**
  33      * @class Windows_Multi_Instance_Monitor
  34      *
  35      * @brief Mixin class for concrete monitors compiled on Windows machines
  36      *        where the Performance Data Helper object of interest has more
  37      *        than once instance, for example multiple CPUs or network cards.
  38      */
  39     class MONITOR_CONTROL_Export Windows_Multi_Instance_Monitor
  40     {
  41     protected:
  42       Windows_Multi_Instance_Monitor (const ACE_TCHAR *wildcard_path);
  43       virtual ~Windows_Multi_Instance_Monitor ();
  44
  45       /// Platform-specific implementation.
  46       void update_i ();
  47
  48       /// Platform-specific reset.
  49       void clear_impl ();
  50
  51     protected:
  52       double value_;
  53
  54     private:
  55       typedef ACE_Unbounded_Queue<Windows_Monitor *>
  56         INSTANCES;
  57       typedef ACE_Unbounded_Queue_Const_Iterator<Windows_Monitor *>
  58         INSTANCES_ITERATOR;
  59
  60       INSTANCES instances_;
  61       DWORD n_instances_;
  62       PDH_STATUS status_;
  63     };
  64   }
  65 }
  66
  67 ACE_END_VERSIONED_NAMESPACE_DECL
  68
  69 #include /**/ "ace/post.h"
  70
  71 #endif /* defined (ACE_HAS_WIN32_PDH) */
  72
  73 #endif // WINDOWS_MULTI_INSTANCE_MONITOR_H