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// -*- C++ -*-
//=============================================================================
/**
* @file Num_Threads_Monitor.h
*
* $Id$
*
* @author Jeff Parsons <j.parsons@vanderbilt.edu>
*/
//=============================================================================
#ifndef NUM_THREADS_MONITOR_H
#define NUM_THREADS_MONITOR_H
#include /**/ "ace/pre.h"
#include "ace/Monitor_Base.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)
#if defined (ACE_HAS_PDH_H) && !defined (ACE_LACKS_PDH_H)
#include "ace/Monitor_Control/Windows_Monitor.h"
#elif defined (ACE_HAS_KSTAT)
/// There is apparently no way to query the number of threads on the
/// Solaris platform. The only benchmark I've seen had to put hooks
/// in the thread creation functions to keep track of the highest
/// thread ID, then check all the IDs less than that to see if the
/// threads still exist. Since we don't have that option in this
/// framework, which is to be used by existing applications, this
/// particular OS monitor is left unimplemented on Solaris.
#endif
#include "ace/Monitor_Control/Monitor_Control_export.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
namespace ACE
{
namespace Monitor_Control
{
/**
* @class Num_Threads_Monitor
*
* @brief Monitor total number of threads in the system.
*/
class MONITOR_CONTROL_Export Num_Threads_Monitor
: public Monitor_Base
#if defined (ACE_HAS_WIN32_PDH)
, public Windows_Monitor
#endif
{
public:
Num_Threads_Monitor (const char* name);
/// Implementation of the pure virtual method.
virtual void update (void);
/// Stores the default name, used if none is supplied by the user.
static const char* default_name (void);
private:
/// Overridden reset, calls platform-specific reset.
virtual void clear_i (void);
private:
static const char* default_name_;
#if defined (ACE_LINUX)
FILE *file_ptr_;
char buf_[1024];
unsigned long nthreads_;
#endif
};
}
}
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
#include /**/ "ace/post.h"
#endif // NUM_THREADS_MONITOR_H
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