[Boost-commit] svn:boost r74667 - trunk/libs/chrono/perf

Subject: [Boost-commit] svn:boost r74667 - trunk/libs/chrono/perf
From: vicente.botet_at_[hidden]
Date: 2011-10-03 08:30:56

Author: viboes
Date: 2011-10-03 08:30:55 EDT (Mon, 03 Oct 2011)
New Revision: 74667
URL: http://svn.boost.org/trac/boost/changeset/74667

Log:
Chrono: update perf test with clock names
Text files modified: 
   trunk/libs/chrono/perf/store_now_in_vector.cpp |    34 +++++++++++++++++++++++++---------      
   1 files changed, 25 insertions(+), 9 deletions(-)

Modified: trunk/libs/chrono/perf/store_now_in_vector.cpp
==============================================================================
--- trunk/libs/chrono/perf/store_now_in_vector.cpp	(original)
+++ trunk/libs/chrono/perf/store_now_in_vector.cpp	2011-10-03 08:30:55 EDT (Mon, 03 Oct 2011)
@@ -12,14 +12,14 @@
 #include <sys/times.h> //for times
 #include <unistd.h>
 
-static const std::size_t size = 1000000;
+static const std::size_t size = 10000000;
 
 template <typename Clock>
 void perf(std::vector<typename Clock::time_point>& vec)
 {
   typedef boost::chrono::stopwatch_reporter<boost::chrono::simple_stopwatch<boost::chrono::high_resolution_clock> > Reporter;
   Reporter rp;
-  for (int i=size; i>0; --i)
+  for (int i=size-1; i>=0; --i)
   {
     vec[i]=Clock::now();
     //vec[i]=typename Clock::time_point(typename Clock::time_point::duration(i));
@@ -30,7 +30,7 @@
 {
   typedef boost::chrono::stopwatch_reporter<boost::chrono::simple_stopwatch<boost::chrono::high_resolution_clock> > Reporter;
   Reporter rp;
-  for (int i=size; i>0; --i)
+  for (int i=size-1; i>=0; --i)
   {
     tms tm;
     vec[i]=::times(&tm);
@@ -42,7 +42,7 @@
 {
   typedef boost::chrono::stopwatch_reporter<boost::chrono::simple_stopwatch<boost::chrono::high_resolution_clock> > Reporter;
   Reporter rp;
-  for (int i=size; i>0; --i)
+  for (int i=size-1; i>=0; --i)
   {
     vec[i]=::clock();
     //vec[i]=typename Clock::time_point(typename Clock::time_point::duration(i));
@@ -56,11 +56,13 @@
   std::vector<typename Clock::time_point> vec(size);
   perf<Clock>(vec);
   std::size_t cnt=0;
-  for (int i=size; i>1; --i)
+  for (int i=size-1; i>1; --i)
   {
     if (vec[i]==vec[i-1]) ++cnt;
   }
-  std::cout << cnt << std::endl;
+  std::cout <<"Nb of values eq to preceding: "<< cnt << std::endl;
+  std::cout <<"Diff last-first: "<< boost::chrono::duration_cast<boost::chrono::milliseconds>(vec[0]-vec[size-1]) << std::endl;
+
 }
 void test2()
 {
@@ -73,7 +75,8 @@
     std::cout << vec[i] << " " ;
   }
   std::cout<< std::endl;
-  std::cout << cnt << std::endl;
+  std::cout <<"Nb of values eq to preceding: "<< cnt << std::endl;
+  std::cout <<"Diff last-first: "<< vec[0]-vec[size-1] << std::endl;
 }
 
 void test3()
@@ -87,20 +90,33 @@
     std::cout << vec[i] << " " ;
   }
   std::cout<< std::endl;
-  std::cout << cnt << std::endl;
+  std::cout <<"Nb of values eq to preceding: "<< cnt << std::endl;
+  std::cout <<"Diff last-first: "<< vec[0]-vec[size-1] << std::endl;
 }
 
 int main() {
 
+  std::cout << "system_clock ";
   test<boost::chrono::system_clock>();
 #ifdef BOOST_CHRONO_HAS_CLOCK_STEADY
+  std::cout << "steady_clock " ;
   test<boost::chrono::steady_clock>();
 #endif
+  std::cout << "high_resolution_clock " ;
+  test<boost::chrono::high_resolution_clock>();
+
 #if defined(BOOST_CHRONO_HAS_PROCESS_CLOCKS)
+  std::cout << "process_real_cpu_clock ";
   test<boost::chrono::process_real_cpu_clock>();
+  std::cout << "process_user_cpu_clock ";
+  test<boost::chrono::process_user_cpu_clock>();
+  std::cout << "process_system_cpu_clock " ;
+  test<boost::chrono::process_system_cpu_clock>();
 #endif
-  test<boost::chrono::high_resolution_clock>();
+
+  std::cout << "times ";
   test2();
+  std::cout << "clock ";
   test3();
   return 1;
 }