libstdc++-v3/testsuite/30_threads/packaged_task/members/at_thread_exit.cc

   1 // { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-rtems* *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
   3 // { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } }
   4 // { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-rtems* *-*-darwin* } }
   5 // { dg-require-cstdint "" }
   6 // { dg-require-gthreads "" }
   7 // { dg-require-atomic-builtins "" }
   8
   9 // Copyright (C) 2014-2015 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 <testsuite_hooks.h>
  29
  30 bool executed = false;
  31
  32 int execute(int i) { executed = true; return i + 1; }
  33
  34 std::future<int> f1;
  35
  36 bool ready(std::future<int>& f)
  37 {
  38   return f.wait_for(std::chrono::milliseconds(1)) == std::future_status::ready;
  39 }
  40
  41 void test01()
  42 {
  43   bool test __attribute__((unused)) = true;
  44
  45   std::packaged_task<int(int)> p1(execute);
  46   f1 = p1.get_future();
  47
  48   p1.make_ready_at_thread_exit(1);
  49
  50   VERIFY( executed );
  51   VERIFY( p1.valid() );
  52   VERIFY( !ready(f1) );
  53 }
  54
  55 int main()
  56 {
  57   std::thread t{test01};
  58   t.join();
  59   VERIFY( ready(f1) );
  60   VERIFY( f1.get() == 2 );
  61 }