Basic_Stats.cpp Source File

00001 #include "ace_pch.h"
00002 // $Id: Basic_Stats.cpp,v 1.1.1.1.40.1 2003/03/13 19:44:20 chad Exp $
00003 
00004 #include "ace/Basic_Stats.h"
00005 #include "ace/Log_Msg.h"
00006 
00007 #if !defined (__ACE_INLINE__)
00008 #include "ace/Basic_Stats.inl"
00009 #endif /* __ACE_INLINE__ */
00010 
00011 ACE_RCSID(ace, Basic_Stats, "$Id: Basic_Stats.cpp,v 1.1.1.1.40.1 2003/03/13 19:44:20 chad Exp $")
00012 
00013 void
00014 ACE_Basic_Stats::accumulate (const ACE_Basic_Stats &rhs)
00015 {
00016   if (rhs.samples_count_ == 0)
00017     return;
00018 
00019   if (this->samples_count_ == 0)
00020     {
00021       this->samples_count_ = rhs.samples_count_;
00022 
00023       this->min_  = rhs.min_;
00024       this->max_  = rhs.max_;
00025       this->sum_  = rhs.sum_;
00026       this->sum2_ = rhs.sum2_;
00027 
00028       return;
00029     }
00030   this->samples_count_ += rhs.samples_count_;
00031 
00032   if (this->min_ > rhs.min_)
00033     this->min_ = rhs.min_;
00034   if (this->max_ < rhs.max_)
00035     this->max_ = rhs.max_;
00036 
00037   this->sum_  += rhs.sum_;
00038   this->sum2_ += rhs.sum2_;
00039 }
00040 
00041 void
00042 ACE_Basic_Stats::dump_results (const ACE_TCHAR *msg,
00043                                ACE_UINT32 sf) const
00044 {
00045   if (this->samples_count () == 0u)
00046     {
00047       ACE_DEBUG ((LM_DEBUG,
00048                   ACE_LIB_TEXT ("%s : no data collected\n"), msg));
00049       return;
00050     }
00051 
00052   ACE_UINT64 avg = this->sum_ / this->samples_count_;
00053   ACE_UINT64 dev =
00054 #if defined ACE_LACKS_LONGLONG_T
00055     ACE_static_cast (ACE_U_LongLong,
00056                      this->sum2_ / this->samples_count_)
00057     - avg * ACE_U64_TO_U32(avg);
00058 #else  /* ! ACE_LACKS_LONGLONG_T */
00059     this->sum2_ / this->samples_count_ - avg * avg;
00060 #endif /* ! ACE_LACKS_LONGLONG_T */
00061 
00062   double l_min = ACE_CU64_TO_CU32 (this->min_) / sf;
00063   double l_max = ACE_CU64_TO_CU32 (this->max_) / sf;
00064   double l_avg = ACE_CU64_TO_CU32 (avg) / sf;
00065   double l_dev = ACE_CU64_TO_CU32 (dev) / (sf * sf);
00066 
00067   ACE_DEBUG ((LM_DEBUG,
00068               ACE_LIB_TEXT ("%s latency   : %.2f[%d]/%.2f/%.2f[%d]/%.2f (min/avg/max/var^2)\n"),
00069               msg,
00070               l_min, this->min_at_,
00071               l_avg,
00072               l_max, this->max_at_,
00073               l_dev));
00074 }