ACE_Basic_Stats Class Reference

Collect basic stats about a series of samples. More...

#include <Basic_Stats.h>

Inheritance diagram for ACE_Basic_Stats:

Inheritance graph
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List of all members.

Public Member Functions

 ACE_Basic_Stats (void)
 Constructor.
ACE_UINT32 samples_count (void) const
 The number of samples received so far.
void sample (ACE_UINT64 value)
 Record one sample.
void accumulate (const ACE_Basic_Stats &rhs)
 Update the values to reflect the stats in rhs.
void dump_results (const ACE_TCHAR *msg, ACE_UINT32 scale_factor) const
 Dump all the samples.

Public Attributes

ACE_UINT32 samples_count_
 The number of samples.
ACE_UINT64 min_
 The minimum value.
ACE_UINT32 min_at_
 The number of the sample that had the minimum value.
ACE_UINT64 max_
 The maximum value.
ACE_UINT32 max_at_
 The number of the sample that had the maximum value.
ACE_UINT64 sum_
 The sum of all the values.


Detailed Description

Collect basic stats about a series of samples.

Compute the average and standard deviation (aka jitter) for an arbitrary number of samples, using constant space. Normally used for latency statistics.


Constructor & Destructor Documentation

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE ACE_Basic_Stats::ACE_Basic_Stats ( void   ) 

Constructor.

The number of samples is pre-allocated, and cannot changes once the class is initialized.


Member Function Documentation

ACE_INLINE ACE_UINT32 ACE_Basic_Stats::samples_count ( void   )  const

The number of samples received so far.

ACE_INLINE void ACE_Basic_Stats::sample ( ACE_UINT64  value  ) 

Record one sample.

ACE_BEGIN_VERSIONED_NAMESPACE_DECL void ACE_Basic_Stats::accumulate ( const ACE_Basic_Stats rhs  ) 

Update the values to reflect the stats in rhs.

void ACE_Basic_Stats::dump_results ( const ACE_TCHAR msg,
ACE_UINT32  scale_factor 
) const

Dump all the samples.

Prints out the results, using msg as a prefix for each message and scaling all the numbers by scale_factor. The latter is useful because high resolution timer samples are acquired in clock ticks, but often presented in microseconds.


Member Data Documentation

ACE_UINT32 ACE_Basic_Stats::samples_count_

The number of samples.

ACE_UINT64 ACE_Basic_Stats::min_

The minimum value.

ACE_UINT32 ACE_Basic_Stats::min_at_

The number of the sample that had the minimum value.

ACE_UINT64 ACE_Basic_Stats::max_

The maximum value.

ACE_UINT32 ACE_Basic_Stats::max_at_

The number of the sample that had the maximum value.

ACE_UINT64 ACE_Basic_Stats::sum_

The sum of all the values.


The documentation for this class was generated from the following files:
Generated on Fri Dec 14 03:25:17 2007 for ACE by  doxygen 1.5.3-6