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ACE_Sample_History Class Reference

Save multiple samples in an array. More...

#include <Sample_History.h>

List of all members.

Public Member Functions

 ACE_Sample_History (size_t max_samples)
 Constructor.

 ~ACE_Sample_History (void)
 Destructor.

int sample (ACE_UINT64 value)
 Record one sample.

size_t max_samples (void) const
 Returns the maximum number of samples.

size_t sample_count (void) const
 Returns the current number of samples.

void dump_samples (const ACE_TCHAR *msg, ACE_UINT32 scale_factor) const
 Dump all the samples.

void collect_basic_stats (ACE_Basic_Stats &) const
 Collect the summary for all the samples.

ACE_UINT64 get_sample (size_t i) const
 Get a sample.


Private Attributes

size_t max_samples_
 The maximum number of samples.

size_t sample_count_
 The current number of samples.

ACE_UINT64 * samples_
 The samples.

Detailed Description

Save multiple samples in an array.

Save multiple samples (usually latency numbers), into an array, and later print them in several formats.

Definition at line 34 of file Sample_History.h.

Constructor & Destructor Documentation

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_Sample_History::ACE_Sample_History (  size_t  max_samples  ) 
 

Constructor.

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

Definition at line 18 of file Sample_History.cpp.

References ACE_NEW, and ACE_UINT64. 

00019   : max_samples_ (max_samples)
00020   , sample_count_ (0)
00021 {
00022   ACE_NEW(this->samples_, ACE_UINT64[this->max_samples_]);
00023 }

ACE_Sample_History::~ACE_Sample_History (  void   ) 
 

Destructor.

Definition at line 25 of file Sample_History.cpp.

References samples_. 

00026 {
00027   delete[] this->samples_;
00028 }

Member Function Documentation

void ACE_Sample_History::collect_basic_stats (  ACE_Basic_Stats &   )  const
 

Collect the summary for all the samples.

Definition at line 57 of file Sample_History.cpp.

References ACE_Basic_Stats::sample(), and sample_count_. 

00058 {
00059   for (size_t i = 0; i != this->sample_count_; ++i)
00060     {
00061       stats.sample (this->samples_[i]);
00062     }
00063 }

void ACE_Sample_History::dump_samples (  const ACE_TCHAR *  msg,
ACE_UINT32  scale_factor
)  const
 

Dump all the samples.

Prints out all the samples, using msg as a prefix for each message.

Definition at line 43 of file Sample_History.cpp.

References ACE_CU64_TO_CU32, ACE_DEBUG, ACE_LIB_TEXT, ACE_TCHAR, ACE_UINT64, LM_DEBUG, sample_count_, and samples_. 

00045 {
00046 #ifndef ACE_NLOGGING
00047   for (size_t i = 0; i != this->sample_count_; ++i)
00048     {
00049       const ACE_UINT64 x = this->samples_[i] / scale_factor;
00050       const ACE_UINT32 val = ACE_CU64_TO_CU32 (x);
00051       ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT("%s: %d %u\n"), msg, i, val));
00052     }
00053 #endif /* ACE_NLOGGING */
00054 }

ACE_INLINE ACE_UINT64 ACE_Sample_History::get_sample (  size_t  i  )  const
 

Get a sample.

Definition at line 18 of file Sample_History.inl.

References sample_count_, and samples_. 

00019 {
00020   if (this->sample_count_ <= i)
00021     return 0;
00022 
00023   return this->samples_[i];
00024 }

size_t ACE_Sample_History::max_samples (  void   )  const
 

Returns the maximum number of samples.

Definition at line 31 of file Sample_History.cpp.

References max_samples_. 

00032 {
00033   return this->max_samples_;
00034 }

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE int ACE_Sample_History::sample (  ACE_UINT64  value  ) 
 

Record one sample.

Return 0 on success, -1 if the sample could not be stored

Definition at line 8 of file Sample_History.inl.

References ACE_UINT64, max_samples_, sample_count_, and samples_. 

00009 {
00010   if (this->sample_count_ >= this->max_samples_)
00011     return -1;
00012 
00013   this->samples_[this->sample_count_++] = value;
00014   return 0;
00015 }

size_t ACE_Sample_History::sample_count (  void   )  const
 

Returns the current number of samples.

Definition at line 37 of file Sample_History.cpp.

References sample_count_. 

00038 {
00039   return this->sample_count_;
00040 }

Member Data Documentation

size_t ACE_Sample_History::max_samples_ [private]
 

The maximum number of samples.

Definition at line 75 of file Sample_History.h.

Referenced by max_samples(), and sample().

size_t ACE_Sample_History::sample_count_ [private]
 

The current number of samples.

Definition at line 78 of file Sample_History.h.

Referenced by collect_basic_stats(), dump_samples(), get_sample(), sample(), and sample_count().

ACE_UINT64* ACE_Sample_History::samples_ [private]
 

The samples.

Definition at line 81 of file Sample_History.h.

Referenced by dump_samples(), get_sample(), sample(), and ~ACE_Sample_History().

The documentation for this class was generated from the following files:
Generated on Thu Nov 9 11:28:25 2006 for ACE by doxygen 1.3.6