ACE/ace/Monitor_Control/CPU_Load_Monitor.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  * @file CPU_Load_Monitor.h
   6  *
   7  * @author Jeff Parsons <j.parsons@vanderbilt.edu>
   8  */
   9 //=============================================================================
  10
  11 #ifndef CPU_LOAD_MONITOR_H
  12 #define CPU_LOAD_MONITOR_H
  13
  14 #include /**/ "ace/pre.h"
  15
  16 #include "ace/Monitor_Base.h"
  17
  18 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  19 #pragma once
  20 #endif /* ACE_LACKS_PRAGMA_ONCE */
  21
  22 #if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
  23
  24 #if defined (ACE_HAS_PDH_H) && !defined (ACE_LACKS_PDH_H)
  25 #include "ace/Monitor_Control/Windows_Monitor.h"
  26 #endif
  27
  28 #include "ace/Monitor_Control/Monitor_Control_export.h"
  29
  30 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  31
  32 namespace ACE
  33 {
  34   namespace Monitor_Control
  35   {
  36     /**
  37      * @class CPU_Load_Monitor
  38      *
  39      * @brief Monitors percentage CPU utilization.
  40      */
  41     class MONITOR_CONTROL_Export CPU_Load_Monitor
  42       : public Monitor_Base
  43 #if defined (ACE_HAS_WIN32_PDH)
  44       , public Windows_Monitor
  45 #endif
  46     {
  47     public:
  48       CPU_Load_Monitor (const char* name);
  49
  50       /// Implementation of the pure virtual method.
  51       virtual void update ();
  52
  53       /// Stores the default name, used if none is supplied by the user.
  54       static const char* default_name ();
  55
  56     private:
  57       /// Overridden reset, calls platform-specific reset.
  58       virtual void clear_i ();
  59
  60       /// Common code to the constructor and to clear_i().
  61       void init ();
  62
  63     private:
  64 #if defined (ACE_LINUX)
  65       void access_proc_stat (unsigned long *which_idle);
  66 #endif
  67
  68     private:
  69       static const char* default_name_;
  70
  71       /// Linux implementation
  72 #if defined (ACE_LINUX)
  73       unsigned long user_;
  74       unsigned long wait_;
  75       unsigned long kernel_;
  76       unsigned long idle_;
  77       unsigned long prev_idle_;
  78       double prev_total_;
  79 #endif
  80 #if defined (ACE_LINUX)
  81       FILE *file_ptr_;
  82       char buf_[1024];
  83 #endif
  84     };
  85   }
  86 }
  87
  88 ACE_END_VERSIONED_NAMESPACE_DECL
  89
  90 #endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
  91
  92 #include /**/ "ace/post.h"
  93
  94 #endif // CPU_LOAD_MONITOR_H