ceph/src/boost/libs/thread/test/sync/futures/packaged_task/member_swap_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/future.hpp>
  16
  17 // class packaged_task<R>
  18
  19 // void swap(packaged_task& other);
  20
  21 #define BOOST_THREAD_VERSION 4
  22 #if BOOST_THREAD_VERSION == 4
  23 #define BOOST_THREAD_DETAIL_SIGNATURE double()
  24 #else
  25 #define BOOST_THREAD_DETAIL_SIGNATURE double
  26 #endif
  27
  28 #include <boost/thread/future.hpp>
  29 #include <boost/detail/lightweight_test.hpp>
  30
  31 class A
  32 {
  33   long data_;
  34
  35 public:
  36   explicit A(long i) :
  37     data_(i)
  38   {
  39   }
  40
  41   long operator()() const
  42   {
  43     return data_;
  44   }
  45   long operator()(long i, long j) const
  46   {
  47     return data_ + i + j;
  48   }
  49 };
  50
  51 int main()
  52 {
  53   {
  54     boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p0(A(5));
  55     boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
  56     p.swap(p0);
  57     BOOST_TEST(!p0.valid());
  58     BOOST_TEST(p.valid());
  59     boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
  60     //p(3, 'a');
  61     p();
  62     BOOST_TEST(f.get() == 5.0);
  63   }
  64   {
  65     boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p0;
  66     boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
  67     p.swap(p0);
  68     BOOST_TEST(!p0.valid());
  69     BOOST_TEST(!p.valid());
  70   }
  71
  72   return boost::report_errors();
  73 }
  74