libstdc++-v3/testsuite/30_threads/shared_future/members/wait_until.cc

   1 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* powerpc-ibm-aix* } }
   3 // { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
   4 // { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
   5 // { dg-require-cstdint "" }
   6 // { dg-require-gthreads "" }
   7 // { dg-require-atomic-builtins "" }
   8
   9 // Copyright (C) 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
  10 //
  11 // This file is part of the GNU ISO C++ Library.  This library is free
  12 // software; you can redistribute it and/or modify it under the
  13 // terms of the GNU General Public License as published by the
  14 // Free Software Foundation; either version 3, or (at your option)
  15 // any later version.
  16
  17 // This library is distributed in the hope that it will be useful,
  18 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 // GNU General Public License for more details.
  21
  22 // You should have received a copy of the GNU General Public License along
  23 // with this library; see the file COPYING3.  If not see
  24 // <http://www.gnu.org/licenses/>.
  25
  26
  27 #include <future>
  28 #include <chrono>
  29 #include <testsuite_hooks.h>
  30
  31 std::chrono::system_clock::time_point make_time(int i)
  32 {
  33   return std::chrono::system_clock::now() + std::chrono::milliseconds(i);
  34 }
  35
  36 void test01()
  37 {
  38   bool test __attribute__((unused)) = true;
  39
  40   std::promise<int> p1;
  41   std::shared_future<int> f1(p1.get_future());
  42   std::shared_future<int> f2(f1);
  43
  44   auto when = make_time(10);
  45   VERIFY( f1.wait_until(make_time(10)) == std::future_status::timeout );
  46   VERIFY( std::chrono::system_clock::now() >= when );
  47
  48   when = make_time(10);
  49   VERIFY( f2.wait_until(make_time(10)) == std::future_status::timeout );
  50   VERIFY( std::chrono::system_clock::now() >= when );
  51
  52   p1.set_value(1);
  53
  54   when = make_time(100);
  55   VERIFY( f1.wait_until(when) == std::future_status::ready );
  56   VERIFY( f2.wait_until(when) == std::future_status::ready );
  57   VERIFY( std::chrono::system_clock::now() < when );
  58 }
  59
  60 int main()
  61 {
  62   test01();
  63   return 0;
  64 }