ceph/src/boost/libs/thread/test/sync/futures/future/wait_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) 2013 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/future.hpp>
  16
  17 // class future<R>
  18
  19 // template <class Rep, class Period>
  20 // void wait() const;
  21
  22 //#define BOOST_THREAD_VERSION 3
  23 #define BOOST_THREAD_VERSION 4
  24 //#define BOOST_THREAD_USES_LOG
  25 #define BOOST_THREAD_USES_LOG_THREAD_ID
  26 #include <boost/thread/detail/log.hpp>
  27
  28 #include <boost/thread/future.hpp>
  29 #include <boost/thread/thread.hpp>
  30 #include <boost/chrono/chrono_io.hpp>
  31 #include <boost/detail/lightweight_test.hpp>
  32
  33 #if defined BOOST_THREAD_USES_CHRONO
  34
  35 #ifdef BOOST_MSVC
  36 #pragma warning(disable: 4127) // conditional expression is constant
  37 #endif
  38
  39 typedef boost::chrono::milliseconds ms;
  40
  41 namespace boost
  42 {
  43   template <typename OStream>
  44   OStream& operator<<(OStream& os , boost::future_status st )
  45   {
  46     os << underlying_cast<int>(st) << " ";
  47     return os;
  48   }
  49   template <typename T>
  50   struct wrap
  51   {
  52     wrap(T const& v) :
  53       value(v)
  54     {
  55     }
  56     T value;
  57
  58   };
  59
  60   template <typename T>
  61   exception_ptr make_exception_ptr(T v)
  62   {
  63     return copy_exception(wrap<T> (v));
  64   }
  65 }
  66
  67 void func1(boost::promise<int> p)
  68 {
  69   boost::this_thread::sleep_for(ms(500));
  70   p.set_value(3);
  71 }
  72
  73 int j = 0;
  74
  75 void func3(boost::promise<int&> p)
  76 {
  77   boost::this_thread::sleep_for(ms(500));
  78   j = 5;
  79   p.set_value(j);
  80 }
  81
  82 void func5(boost::promise<void> p)
  83 {
  84   boost::this_thread::sleep_for(ms(500));
  85   p.set_value();
  86 }
  87
  88 int main()
  89 {
  90   BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
  91   {
  92     typedef boost::chrono::high_resolution_clock Clock;
  93     {
  94       typedef int T;
  95       boost::promise<T> p;
  96       boost::future<T> f = p.get_future();
  97 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
  98       boost::thread(func1, boost::move(p)).detach();
  99 #else
 100       func1(boost::move(p));
 101 #endif
 102       BOOST_TEST(f.valid());
 103       f.wait();
 104       BOOST_TEST(f.valid());
 105       Clock::time_point t0 = Clock::now();
 106       f.wait();
 107       Clock::time_point t1 = Clock::now();
 108       BOOST_TEST(f.valid());
 109       BOOST_TEST(t1 - t0 < ms(50));
 110     }
 111     {
 112       typedef int& T;
 113       boost::promise<T> p;
 114       boost::future<T> f = p.get_future();
 115 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 116       boost::thread(func3, boost::move(p)).detach();
 117 #else
 118       func3(boost::move(p));
 119 #endif
 120       BOOST_TEST(f.valid());
 121       f.wait();
 122       BOOST_TEST(f.valid());
 123       Clock::time_point t0 = Clock::now();
 124       f.wait();
 125       Clock::time_point t1 = Clock::now();
 126       BOOST_TEST(f.valid());
 127       BOOST_TEST(t1 - t0 < ms(50));
 128     }
 129     {
 130       typedef void T;
 131       boost::promise<T> p;
 132       boost::future<T> f = p.get_future();
 133 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD)
 134       boost::thread(func5, boost::move(p)).detach();
 135 #else
 136       func5(boost::move(p));
 137 #endif
 138       BOOST_TEST(f.valid());
 139       f.wait();
 140       BOOST_TEST(f.valid());
 141       Clock::time_point t0 = Clock::now();
 142       f.wait();
 143       Clock::time_point t1 = Clock::now();
 144       BOOST_TEST(f.valid());
 145       BOOST_TEST(t1 - t0 < ms(50));
 146     }
 147   }
 148   BOOST_THREAD_LOG << BOOST_THREAD_END_LOG;
 149
 150   return boost::report_errors();
 151 }
 152
 153 #else
 154 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
 155 #endif