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

   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) 2009-2024 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 <thread>
  26 #include <mutex>
  27 #include <testsuite_hooks.h>
  28
  29 void fut_wait(std::shared_future<void> f)
  30 {
  31   f.wait();
  32 }
  33
  34 void test01()
  35 {
  36   std::promise<void> p1;
  37   std::shared_future<void> f1(p1.get_future());
  38
  39   std::thread t1(fut_wait, f1);
  40   std::thread t2(fut_wait, f1);
  41   std::thread t3(fut_wait, f1);
  42
  43   p1.set_value();
  44   t1.join();
  45   t2.join();
  46   t3.join();
  47 }
  48
  49 int main()
  50 {
  51   test01();
  52   return 0;
  53 }