libstdc++-v3/testsuite/30_threads/promise/members/set_value.cc

   1 // { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
   2 // { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-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) 2009-2014 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 #include <testsuite_rvalref.h>
  30
  31 void test01()
  32 {
  33   bool test __attribute__((unused)) = true;
  34
  35   std::promise<int> p1;
  36   std::future<int> f1 = p1.get_future();
  37
  38   VERIFY( f1.valid() );
  39
  40   p1.set_value(0);
  41
  42   int&& i1 = f1.get();
  43
  44   VERIFY( i1 == 0 );
  45 }
  46
  47 void test02()
  48 {
  49   bool test __attribute__((unused)) = true;
  50   using __gnu_test::rvalstruct;
  51
  52   std::promise<rvalstruct> p1;
  53   std::future<rvalstruct> f1 = p1.get_future();
  54
  55   VERIFY( f1.valid() );
  56
  57   p1.set_value(rvalstruct(1));
  58
  59   rvalstruct r1(f1.get());
  60
  61   VERIFY( !f1.valid() );
  62   VERIFY( r1.val == 1 );
  63 }
  64
  65
  66 void test03()
  67 {
  68   bool test __attribute__((unused)) = true;
  69
  70   std::promise<int&> p1;
  71   std::future<int&> f1 = p1.get_future();
  72
  73   VERIFY( f1.valid() );
  74
  75   int i1 = 0;
  76   p1.set_value(i1);
  77   int& i2 = f1.get();
  78
  79   VERIFY( !f1.valid() );
  80   VERIFY( &i1 == &i2 );
  81 }
  82
  83 void test04()
  84 {
  85   bool test __attribute__((unused)) = true;
  86
  87   std::promise<void> p1;
  88   std::future<void> f1 = p1.get_future();
  89
  90   VERIFY( f1.valid() );
  91
  92   p1.set_value();
  93   f1.get();
  94
  95   VERIFY( !f1.valid() );
  96 }
  97
  98 int main()
  99 {
 100   test01();
 101   test02();
 102   test03();
 103   test04();
 104
 105   return 0;
 106 }