ACE/ace/Monitor_Control/Memory_Usage_Monitor.cpp

   1 #include "ace/Monitor_Control/Memory_Usage_Monitor.h"
   2
   3 #if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
   4
   5 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
   6
   7 namespace ACE
   8 {
   9   namespace Monitor_Control
  10   {
  11     const char* Memory_Usage_Monitor::default_name_ =
  12       "OS/Memory/TotalUsage";
  13
  14     Memory_Usage_Monitor::Memory_Usage_Monitor (const char* name)
  15       : Monitor_Base (name, Monitor_Control_Types::MC_NUMBER)
  16 #if defined (ACE_HAS_WIN32_PDH)
  17       , Windows_Monitor (ACE_TEXT ("\\Memory\\% Committed Bytes In Use"))
  18 #endif
  19     {
  20     }
  21
  22     void
  23     Memory_Usage_Monitor::update ()
  24     {
  25 #if defined (ACE_HAS_WIN32_PDH)
  26       this->update_i ();
  27       this->receive (this->value_);
  28 #elif defined (ACE_HAS_LINUX_SYSINFO)
  29       if (::sysinfo (&this->sysinfo_) != 0)
  30         {
  31           ACELIB_ERROR ((LM_ERROR,
  32                       ACE_TEXT ("Memory usage - sysinfo() failed\n")));
  33           return;
  34         }
  35
  36       double used_ram = this->sysinfo_.totalram - this->sysinfo_.freeram;
  37       double percent_mem_usage = used_ram / this->sysinfo_.totalram * 100.0;
  38
  39       this->receive (percent_mem_usage);
  40 #endif
  41     }
  42
  43     const char*
  44     Memory_Usage_Monitor::default_name ()
  45     {
  46       return Memory_Usage_Monitor::default_name_;
  47     }
  48
  49     void
  50     Memory_Usage_Monitor::clear_i ()
  51     {
  52 #if defined (ACE_HAS_WIN32_PDH)
  53       this->clear_impl ();
  54 #endif
  55
  56       this->Monitor_Base::clear_i ();
  57     }
  58   }
  59 }
  60
  61 ACE_END_VERSIONED_NAMESPACE_DECL
  62
  63 #endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */