ceph/src/boost/libs/thread/test/sync/futures/packaged_task/move_assign_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 // <future>
  16
  17 // class promise<R>
  18
  19 // promise& operator=(promise&& rhs);
  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) : data_(i) {}
  37
  38     long operator()() const {return data_;}
  39     long operator()(long i, long j) const {return data_ + i + j;}
  40 };
  41
  42
  43 int main()
  44 {
  45
  46   {
  47       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p0(A(5));
  48       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
  49       p = boost::move(p0);
  50       BOOST_TEST(!p0.valid());
  51       BOOST_TEST(p.valid());
  52       boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
  53       // p(3, 'a');
  54       p();
  55       BOOST_TEST(f.get() == 5.0);
  56   }
  57   {
  58       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p0;
  59       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
  60       p = boost::move(p0);
  61       BOOST_TEST(!p0.valid());
  62       BOOST_TEST(!p.valid());
  63   }
  64
  65   return boost::report_errors();
  66
  67 }
  68