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// -*- C++ -*-
//=============================================================================
/**
* @file Windows_Monitor.h
*
* $Id$
*
* @author Jeff Parsons <j.parsons@vanderbilt.edu>
*/
//=============================================================================
#ifndef WINDOWS_MONITOR_H
#define WINDOWS_MONITOR_H
#include /**/ "ace/pre.h"
#include "ace/SString.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/os_include/os_pdh.h"
#include "ace/Monitor_Control/Monitor_Control_export.h"
#if defined (ACE_HAS_WIN32_PDH)
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
namespace ACE
{
namespace Monitor_Control
{
/**
* @class Windows_Monitor
*
* @brief Mixin class for concrete monitors compiled on Windows machines.
*/
class MONITOR_CONTROL_Export Windows_Monitor
{
friend class Windows_Multi_Instance_Monitor;
protected:
Windows_Monitor (const ACE_TCHAR *path);
/// Platform-specific implementation.
void update_i (void);
/// Platform-specific reset.
void clear_impl (void);
protected:
double value_;
private:
/// Code common to constructor and clear_impl().
void init (void);
/// Make these persistent as members so they don't have to be
/// created & destroyed with each update.
private:
ACE_TString path_;
HQUERY query_;
HCOUNTER counter_;
PDH_STATUS status_;
};
}
}
ACE_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* defined (ACE_HAS_WIN32_PDH) */
#endif // WINDOWS_MONITOR_H
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