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//$Id$
#include "Task_Stats.h"
#include "ace/OS.h"
#include "ace/Log_Msg.h"
#if !defined (__ACE_INLINE__)
#include "Task_Stats.inl"
#endif /* __ACE_INLINE__ */
ACE_UINT32 Task_Stats::gsf_ = ACE_High_Res_Timer::global_scale_factor ();
Base_Time::Base_Time (void)
{
base_time_ = ACE_OS::gethrtime ();
}
Task_Stats::Task_Stats (void)
: base_time_(0),
end_time_ (0),
max_samples_ (0),
samples_count_ (0),
time_inv_ (0),
time_exec_ (0),
mean_ (0),
var_2_ (0)
{
}
Task_Stats::~Task_Stats (void)
{
delete[] this->time_inv_;
delete[] this->time_exec_;
}
int
Task_Stats::init (size_t max_samples)
{
this->max_samples_ = max_samples;
ACE_NEW_RETURN (this->time_inv_, ACE_UINT64[this->max_samples_], -1);
ACE_NEW_RETURN (this->time_exec_, ACE_UINT64[this->max_samples_], -1);
return 0;
}
void
Task_Stats::base_time (ACE_UINT64 time)
{
base_time_ = time;
}
void
Task_Stats::end_time (ACE_UINT64 time)
{
end_time_ = time;
}
void Task_Stats::dump_samples (const char *file_name, const char *msg, int dump_samples)
{
dump_samples_i(ACE_TEXT_TO_TCHAR_IN(file_name), ACE_TEXT_TO_TCHAR_IN(msg), dump_samples);
}
void Task_Stats::dump_samples (const wchar_t *file_name, const wchar_t *msg, int dump_samples)
{
dump_samples_i(ACE_TEXT_TO_TCHAR_IN(file_name), ACE_TEXT_TO_TCHAR_IN(msg), dump_samples);
}
void
Task_Stats::dump_samples_i (const ACE_TCHAR *file_name, const ACE_TCHAR *msg, int dump_samples)
{
FILE* output_file = ACE_OS::fopen (file_name, ACE_TEXT("w"));
// first dump what the caller has to say.
ACE_OS::fprintf (output_file, "%s\n",msg);
// next, compose and dump what we want to say.
// calc throughput.
double seconds = this->diff_sec (base_time_, end_time_);
char out_msg[BUFSIZ];
if (seconds == 0 || samples_count_ == 0)
{
ACE_OS::sprintf (out_msg,
"# No samples recorded\n");
ACE_OS::fprintf (output_file, "%s",out_msg);
ACE_OS::fclose (output_file);
return;
}
double t_avg = samples_count_ / seconds;
ACE_OS::sprintf (out_msg,
"# Throughput: %.2f (events/second) [%u samples in %.2f seconds]\n",
t_avg, samples_count_, seconds);
ACE_OS::fprintf (output_file, "%s",out_msg);
// Calc the mean.
size_t i = 0;
for (i = 0; i != this->samples_count_; ++i)
{
ACE_UINT32 val_2 = Task_Stats::diff_usec (time_inv_[i], time_exec_[i]);
// Write the normalized value.
// we will need this to calculate the var^2
this->time_exec_[i] = val_2;
this->mean_ += val_2;
}
// calculate the mean.
this->mean_ /= this->samples_count_;
// Calculate the var^2
for (i = 0; i != this->samples_count_; ++i)
{
ACE_UINT64 diff = this->time_exec_[i] - this->mean_;
ACE_UINT64 diff_sq =
#if defined ACE_LACKS_LONGLONG_T
diff * ACE_U64_TO_U32(diff);
#else /* ! ACE_LACKS_LONGLONG_T */
diff * diff;
#endif /* ! ACE_LACKS_LONGLONG_T */
this->var_2_ += diff_sq;
}
this->var_2_ /= this->samples_count_;
ACE_OS::fprintf (output_file, "## Latency: Avg = %u, Var^2 = %u\n"
, ACE_CU64_TO_CU32 (this->mean_)
, ACE_CU64_TO_CU32 (this->var_2_));
if (TAO_debug_level > 0)
ACE_DEBUG ((LM_DEBUG, " Latency: Avg = %u, Var^2 = %u\n"
, ACE_CU64_TO_CU32 (this->mean_)
, ACE_CU64_TO_CU32 (this->var_2_)));
// if we are asked to, dump the samples recorded.
if (dump_samples)
{
ACE_OS::fprintf (output_file, "#Invocation time \t Execution time\n");
for (i = 0; i != this->samples_count_; ++i)
{
ACE_UINT32 val_1 = Task_Stats::diff_usec (base_time_, time_inv_[i]);
ACE_OS::fprintf (output_file, "%u \t %u\n",val_1,
ACE_CU64_TO_CU32 (time_exec_[i]));
}
}
ACE_OS::fclose (output_file);
}
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