libstdc++-v3/testsuite/30_threads/condition_variable/members/53841.cc

   1 // { dg-do compile }
   2 // { dg-options "-pthread"  }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-effective-target pthread }
   5 // { dg-require-gthreads "" }
   6
   7 // Copyright (C) 2012-2020 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24 // PR libstdc++/53841
  25
  26 #include <chrono>
  27 #include <mutex>
  28 #include <condition_variable>
  29
  30 namespace ch = std::chrono;
  31
  32 struct FPClock : ch::system_clock
  33 {
  34     typedef double rep;
  35     typedef std::ratio<1> period;
  36     typedef ch::duration<rep, period> duration;
  37     typedef ch::time_point<FPClock> time_point;
  38
  39     static time_point now()
  40     { return time_point(duration(system_clock::now().time_since_epoch())); }
  41 };
  42
  43 void f()
  44 {
  45     std::mutex mx;
  46     std::unique_lock<std::mutex> l(mx);
  47     std::condition_variable cv;
  48     cv.wait_until(l, FPClock::now());
  49 }