Collect basic stats about a series of samples. More...
#include <Basic_Stats.h>

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. | |
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.
| ACE_Basic_Stats::ACE_Basic_Stats | ( | void | ) | [inline] |
Constructor.
The number of samples is pre-allocated, and cannot changes once the class is initialized.
| 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.
| void ACE_Basic_Stats::sample | ( | ACE_UINT64 | value ) | [inline] |
Record one sample.
| ACE_UINT32 ACE_Basic_Stats::samples_count | ( | void | ) | const [inline] |
The number of samples received so far.
The maximum value.
| ACE_UINT32 ACE_Basic_Stats::max_at_ |
The number of the sample that had the maximum value.
The minimum value.
| ACE_UINT32 ACE_Basic_Stats::min_at_ |
The number of the sample that had the minimum value.
| ACE_UINT32 ACE_Basic_Stats::samples_count_ |
The number of samples.
The sum of all the values.
1.7.2