libstdc++-v3/testsuite/30_threads/this_thread/sleep_until.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-sleep "" }
   3
   4 // Copyright (C) 2020-2021 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <chrono>
  22 #include <thread>
  23 #include <testsuite_hooks.h>
  24
  25 // This tests this_thread::sleep_until without using -pthread
  26
  27 namespace chr = std::chrono;
  28
  29 void
  30 test01()
  31 {
  32   chr::system_clock::time_point begin = chr::system_clock::now();
  33   chr::microseconds ms(500);
  34
  35   std::this_thread::sleep_until(chr::system_clock::now() + ms);
  36
  37   VERIFY( (chr::system_clock::now() - begin) >= ms );
  38 }
  39
  40 int main()
  41 {
  42   test01();
  43 }