libstdc++-v3/testsuite/30_threads/future/members/share.cc

   1 // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* 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) 2011-2013 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 int value = 99;
  31
  32 void test01()
  33 {
  34   bool test __attribute__((unused)) = true;
  35
  36   std::promise<int> p1;
  37   std::future<int> f1(p1.get_future());
  38   std::shared_future<int> f2 = f1.share();
  39
  40   p1.set_value(value);
  41   VERIFY( f2.get() == value );
  42 }
  43
  44 void test02()
  45 {
  46   bool test __attribute__((unused)) = true;
  47
  48   std::promise<int&> p1;
  49   std::future<int&> f1(p1.get_future());
  50   std::shared_future<int&> f2 = f1.share();
  51
  52   p1.set_value(value);
  53   VERIFY( &f2.get() == &value );
  54 }
  55
  56 void test03()
  57 {
  58   std::promise<void> p1;
  59   std::future<void> f1(p1.get_future());
  60   std::shared_future<void> f2 = f1.share();
  61
  62   p1.set_value();
  63   f2.get();
  64 }
  65
  66 int main()
  67 {
  68   test01();
  69   test02();
  70   test03();
  71
  72   return 0;
  73 }