ACE/examples/Misc/test_profile_timer.cpp

   1 #include "ace/OS_main.h"
   2 #include "ace/Profile_Timer.h"
   3 #include "ace/Log_Msg.h"
   4 #include "ace/OS_NS_stdlib.h"
   5 #include "ace/OS_NS_unistd.h"
   6
   7
   8 static const int DEFAULT_ITERATIONS = 100000000;
   9
  10 int
  11 ACE_TMAIN (int argc, ACE_TCHAR *argv[])
  12 {
  13   ACE_Profile_Timer timer;
  14   int iterations = argc > 1 ? ACE_OS::atoi (argv[1]) : DEFAULT_ITERATIONS;
  15
  16   timer.start ();
  17
  18   for (int i = 0; i < iterations; i++)
  19     ACE_OS::getpid ();
  20
  21   timer.stop ();
  22
  23   ACE_Profile_Timer::ACE_Elapsed_Time et;
  24
  25   timer.elapsed_time (et);
  26
  27   ACE_DEBUG ((LM_DEBUG, "iterations = %d\n", iterations));
  28   ACE_DEBUG ((LM_DEBUG, "real time = %f secs, user time = %f secs, system time = %f secs\n",
  29               et.real_time, et.user_time, et.system_time));
  30
  31   ACE_DEBUG ((LM_DEBUG, "time per call = %f usecs\n",
  32               (et.real_time / double (iterations)) * 1000000));
  33   return 0;
  34 }
  35