ceph/src/boost/libs/date_time/test/posix_time/testmicrosec_time_clock.cpp

   1 /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
   2  * Use, modification and distribution is subject to the
   3  * Boost Software License, Version 1.0. (See accompanying
   4  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
   5
   6  */
   7
   8 #include "boost/date_time/posix_time/posix_time.hpp"
   9 #include "boost/date_time/microsec_time_clock.hpp"
  10 #include "../testfrmwk.hpp"
  11 #if defined(BOOST_HAS_FTIME)
  12 #include <windows.h>
  13 #endif
  14
  15 void
  16 sync_to_next_second()
  17 {
  18   using namespace boost::posix_time;
  19
  20   ptime t_prev;
  21   ptime t_now = second_clock::local_time();
  22
  23   // Wait the next seconds
  24   do
  25   {
  26     t_prev = t_now;
  27     t_now = second_clock::local_time();
  28   } while (t_now.time_of_day().seconds() == t_prev.time_of_day().seconds());
  29
  30   // Wait 300ms in order to avoid seconds of second_clock > microsec_clock.
  31   t_now = microsec_clock::local_time();
  32   t_prev = t_now;
  33   do
  34   {
  35     t_now = microsec_clock::local_time();
  36   } while (t_now - t_prev < milliseconds(300));
  37
  38 }
  39
  40
  41 int
  42 main()
  43 {
  44 #ifdef BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK
  45
  46   using namespace boost::posix_time;
  47
  48   std::cout << "Check local time of microsec_clock against second_clock" << std::endl;
  49
  50   ptime last = microsec_clock::local_time();
  51   int max = 5;
  52   for (int i=0; i<max; i++)
  53   {
  54     // Some systems loop too fast so "last is less" tests fail due to
  55     // 'last' & 't2' being equal. These calls slow it down enough to
  56     // make 'last' & 't2' different. Moreover, we must wait the next
  57     // second to avoid a change in hour, minute or second field
  58     // between acquisition of t1 and t2.
  59     sync_to_next_second();
  60
  61     ptime t1 = second_clock::local_time();
  62     std::cout << t1 << std::endl;
  63
  64     ptime t2 = microsec_clock::local_time();
  65     std::cout << t2 << std::endl;
  66
  67     // sometimes on very slow systems (github actions) a long time
  68     // can pass between syncing to the next second + 300ms (see previous
  69     // function) and asking for t2; therefore if the fractional seconds
  70     // of t2 are less than 300ms we skip that test loop assuming it
  71     // took too long
  72     time_duration t2_tod = t2.time_of_day();
  73     if (t2_tod.fractional_seconds() < (t2_tod.ticks_per_second() * 3) / 10) {
  74         std::cout << "SKIP :: we had a significant host processing delay" << std::endl;
  75         continue;
  76     }
  77
  78     check("check equality of hours "
  79           "between second_clock and microsec_clock timestamps",
  80           t1.time_of_day().hours() == t2.time_of_day().hours());
  81
  82     check("check equality of minutes "
  83           "between second_clock and microsec_clock timestamps",
  84           t1.time_of_day().minutes() == t2.time_of_day().minutes());
  85
  86     check("check equality of seconds "
  87           "between second_clock and microsec_clock timestamps",
  88           t1.time_of_day().seconds() == t2.time_of_day().seconds());
  89
  90     check("check equality of date"
  91           "between second_clock and microsec_clock timestamps",
  92           t1.date() == t2.date());
  93
  94     if( !check("check that previous microsec_clock timestamp "
  95                "is less than the current", last < t2) ) {
  96       std::cout << last << " < " << t2 << std::endl;
  97     }
  98
  99     last = t2;
 100   }
 101
 102
 103   std::cout << "Check universal time of microsec_clock against second_clock" << std::endl;
 104   max = 5;
 105   last = microsec_clock::universal_time();
 106   for (int i=0; i<max; i++)
 107   {
 108     // Some systems loop too fast so "last is less" tests fail due to
 109     // 'last' & 't2' being equal. These calls slow it down enough to
 110     // make 'last' & 't2' different. Moreover, we must wait the next
 111     // second to avoid a change in hour, minute or second field
 112     // between acquisition of t1 and t2.
 113     sync_to_next_second();
 114
 115     ptime t1 = second_clock::universal_time();
 116     std::cout << t1 << std::endl;
 117
 118     ptime t2 = microsec_clock::universal_time();
 119     std::cout << t2 << std::endl;
 120
 121     // sometimes on very slow systems (github actions) a long time
 122     // can pass between syncing to the next second + 300ms (see previous
 123     // function) and asking for t2; therefore if the fractional seconds
 124     // of t2 are less than 300ms we skip that test loop assuming it
 125     // took too long
 126     time_duration t2_tod = t2.time_of_day();
 127     if (t2_tod.fractional_seconds() < (t2_tod.ticks_per_second() * 3) / 10) {
 128         std::cout << "SKIP :: we had a significant host processing delay" << std::endl;
 129         continue;
 130     }
 131
 132     check("check equality of hours "
 133           "between second_clock and microsec_clock timestamps",
 134           t1.time_of_day().hours() == t2.time_of_day().hours());
 135
 136     check("check equality of minutes "
 137           "between second_clock and microsec_clock timestamps",
 138           t1.time_of_day().minutes() == t2.time_of_day().minutes());
 139
 140     check("check equality of seconds "
 141           "between second_clock and microsec_clock timestamps",
 142           t1.time_of_day().seconds() == t2.time_of_day().seconds());
 143
 144     check("check equality of date"
 145           "between second_clock and microsec_clock timestamps",
 146           t1.date() == t2.date());
 147
 148     if( !check("check that previous microsec_clock timestamp "
 149                "is less than the current", last < t2) ) {
 150       std::cout << last << " < " << t2 << std::endl;
 151     }
 152
 153     last = t2;
 154   }
 155
 156 #else
 157   check("Get time of day micro second clock not supported due to inadequate compiler/platform", false);
 158 #endif
 159   return printTestStats();
 160
 161 }