libs/thread/test/sync/futures/shared_future/get_pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // Copyright (C) 2011 Vicente J. Botet Escriba
  11 //
  12 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
  13 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  14
  15 // <boost/thread/shared_future.hpp>
  16
  17 // class shared_future<R>
  18
  19 // const R& shared_future::get();
  20 // R& shared_future<R&>::get();
  21 // void shared_future<void>::get();
  22 //#define BOOST_THREAD_VERSION 3
  23 #define BOOST_THREAD_VERSION 4
  24
  25 #include <boost/thread/future.hpp>
  26 #include <boost/thread/thread.hpp>
  27 #include <boost/detail/lightweight_test.hpp>
  28
  29 #if defined BOOST_THREAD_USES_CHRONO
  30
  31 namespace boost
  32 {
  33 template <typename T>
  34 struct wrap
  35 {
  36   wrap(T const& v) : value(v){}
  37   T value;
  38
  39 };
  40
  41 template <typename T>
  42 exception_ptr make_exception_ptr(T v) {
  43   return copy_exception(wrap<T>(v));
  44 }
  45 }
  46
  47 void func1(boost::promise<int> p)
  48 {
  49     boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
  50     p.set_value(3);
  51 }
  52
  53 void func2(boost::promise<int> p)
  54 {
  55     boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
  56     p.set_exception(boost::make_exception_ptr(3));
  57 }
  58
  59 int j = 0;
  60
  61 void func3(boost::promise<int&> p)
  62 {
  63     boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
  64     j = 5;
  65     p.set_value(j);
  66 }
  67
  68 void func4(boost::promise<int&> p)
  69 {
  70     boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
  71     p.set_exception(boost::make_exception_ptr(3.5));
  72 }
  73
  74 void func5(boost::promise<void> p)
  75 {
  76     boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
  77     p.set_value();
  78 }
  79
  80 void func6(boost::promise<void> p)
  81 {
  82     boost::this_thread::sleep_for(boost::chrono::milliseconds(500));
  83     p.set_exception(boost::make_exception_ptr(4));
  84 }
  85
  86
  87 int main()
  88 {
  89   {
  90       typedef int T;
  91       {
  92           boost::promise<T> p;
  93           boost::shared_future<T> f((p.get_future()));
  94 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
  95            boost::thread(func1, boost::move(p)).detach();
  96 #else
  97            p.set_value(3);
  98 #endif
  99           BOOST_TEST(f.valid());
 100           BOOST_TEST(f.get() == 3);
 101           BOOST_TEST(f.valid());
 102       }
 103       {
 104           boost::promise<T> p;
 105           boost::shared_future<T> f((p.get_future()));
 106 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 107           boost::thread(func2, boost::move(p)).detach();
 108 #else
 109           p.set_exception(boost::make_exception_ptr(3));
 110 #endif
 111           try
 112           {
 113               BOOST_TEST(f.valid());
 114               BOOST_TEST(f.get() == 3);
 115               BOOST_TEST(false);
 116           }
 117           catch (boost::wrap<int> const& i)
 118           {
 119               BOOST_TEST(i.value == 3);
 120           }
 121           catch (...)
 122           {
 123               BOOST_TEST(false);
 124           }
 125           BOOST_TEST(f.valid());
 126       }
 127   }
 128   {
 129       typedef int& T;
 130       {
 131           boost::promise<T> p;
 132           boost::shared_future<T> f((p.get_future()));
 133 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 134           boost::thread(func3, boost::move(p)).detach();
 135 #else
 136           int j=5;
 137           p.set_value(j);
 138 #endif
 139           BOOST_TEST(f.valid());
 140           BOOST_TEST(f.get() == 5);
 141           BOOST_TEST(f.valid());
 142       }
 143       {
 144           boost::promise<T> p;
 145           boost::shared_future<T> f((p.get_future()));
 146 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 147           boost::thread(func4, boost::move(p)).detach();
 148 #else
 149           p.set_exception(boost::make_exception_ptr(3.5));
 150 #endif
 151           try
 152           {
 153               BOOST_TEST(f.valid());
 154               BOOST_TEST(f.get() == 3);
 155               BOOST_TEST(false);
 156           }
 157           catch (boost::wrap<double> const& i)
 158           {
 159               BOOST_TEST(i.value == 3.5);
 160           }
 161           BOOST_TEST(f.valid());
 162       }
 163   }
 164
 165   typedef void T;
 166   {
 167       boost::promise<T> p;
 168       boost::shared_future<T> f((p.get_future()));
 169 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 170        boost::thread(func5, boost::move(p)).detach();
 171 #else
 172        p.set_value();
 173 #endif
 174       BOOST_TEST(f.valid());
 175       f.get();
 176       BOOST_TEST(f.valid());
 177   }
 178   {
 179       boost::promise<T> p;
 180       boost::shared_future<T> f((p.get_future()));
 181 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 182       boost::thread(func6, boost::move(p)).detach();
 183 #else
 184       p.set_exception(boost::make_exception_ptr(4));
 185 #endif
 186       try
 187       {
 188           BOOST_TEST(f.valid());
 189           f.get();
 190           BOOST_TEST(false);
 191       }
 192       catch (boost::wrap<int> const& i)
 193       {
 194           BOOST_TEST(i.value == 4);
 195       }
 196       catch (...)
 197       {
 198           BOOST_TEST(false);
 199       }
 200       BOOST_TEST(f.valid());
 201   }
 202
 203   return boost::report_errors();
 204 }
 205
 206 #else
 207 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
 208 #endif