1 // { dg-do run }
2 // { dg-additional-options "-pthread" { target pthread } }
3 // { dg-require-effective-target c++11 }
4 // { dg-require-gthreads "" }
5 
6 // Copyright (C) 2009-2021 Free Software Foundation, Inc.
7 //
8 // This file is part of the GNU ISO C++ Library.  This library is free
9 // software; you can redistribute it and/or modify it under the
10 // terms of the GNU General Public License as published by the
11 // Free Software Foundation; either version 3, or (at your option)
12 // any later version.
13 
14 // This library is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 // GNU General Public License for more details.
18 
19 // You should have received a copy of the GNU General Public License along
20 // with this library; see the file COPYING3.  If not see
21 // <http://www.gnu.org/licenses/>.
22 
23 
24 #include <future>
25 #include <chrono>
26 #include <testsuite_hooks.h>
27 
make_time(int i)28 std::chrono::system_clock::time_point make_time(int i)
29 {
30   return std::chrono::system_clock::now() + std::chrono::milliseconds(i);
31 }
32 
test01()33 void test01()
34 {
35   std::promise<int> p1;
36   std::future<int> f1(p1.get_future());
37 
38   auto when = make_time(10);
39   VERIFY( f1.wait_until(when) == std::future_status::timeout );
40   VERIFY( std::chrono::system_clock::now() >= when );
41 
42   p1.set_value(1);
43 
44   when = make_time(100);
45   VERIFY( f1.wait_until(when) == std::future_status::ready );
46   VERIFY( std::chrono::system_clock::now() < when );
47 }
48 
main()49 int main()
50 {
51   test01();
52   return 0;
53 }
54