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/* -*- C++ -*- */
//=============================================================================
/**
* @file Task_Stats.h
*
* $Id$
*
* Utility Stats class that maintains the readings.
*
* @author Pradeep Gore <pradeep@cs.wustl.edu>
*/
//=============================================================================
#ifndef TASK_STATS_H
#define TASK_STATS_H
#include "ace/OS_NS_time.h"
#include "ace/Singleton.h"
#include "tao/orbconf.h"
#include "tao/debug.h"
#include "notify_test_export.h"
/**
* @class Base_Time
*
* @brief maintains readings recorded by tasks.
*
*/
class TAO_NOTIFY_TEST_Export Base_Time
{
public:
Base_Time (void);
ACE_hrtime_t base_time_;
};
typedef ACE_Singleton<Base_Time, TAO_SYNCH_MUTEX> BASE_TIME;
/**
* @class Task_Stats
*
* @brief maintains readings recorded by tasks.
*
*/
class TAO_NOTIFY_TEST_Export Task_Stats
{
public:
/// Constructor
Task_Stats (void);
/// Destructor
~Task_Stats (void);
/// Useful Global Scale Factor
static ACE_UINT32 gsf_;
/// Init
int init (size_t max_samples);
/// Useful helper to calculate diff in sec.
static double diff_sec (ACE_UINT64 before, ACE_UINT64 after);
/// Useful helper to calculate diff in usec.
static ACE_UINT32 diff_usec (ACE_UINT64 before, ACE_UINT64 after);
/// Set the base time value.
void base_time (ACE_UINT64 time);
/// Set the end time value.
void end_time (ACE_UINT64 time);
/// Record a sample
int sample (ACE_UINT64 inv_start_time, ACE_UINT64 inv_end_time);
void dump_samples (const char *file_name, const char *msg, int dump_samples);
void dump_samples (const wchar_t *file_name, const wchar_t *msg, int dump_samples);
private:
void dump_samples_i (const ACE_TCHAR *file_name, const ACE_TCHAR *msg, int dump_samples);
/// Base and end times
ACE_UINT64 base_time_;
ACE_UINT64 end_time_;
/// The maximum number of samples
ACE_UINT32 max_samples_;
/// The number of samples
ACE_UINT32 samples_count_;
/// The samples : the time of invocation. and the recorded exec. time .
ACE_UINT64 *time_inv_;
ACE_UINT64 *time_exec_;
/// The mean of the data set.
ACE_UINT64 mean_;
/// The Var^2 of the data set.
ACE_UINT64 var_2_;
};
#if defined (__ACE_INLINE__)
#include "Task_Stats.inl"
#endif /* __ACE_INLINE__ */
#endif /* TASK_STATS_H */
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