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- // Copyright (C) 2013 Vicente Botet
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- #include <boost/assert.hpp>
- #include <boost/static_assert.hpp>
- #include <vector>
- #include <utility>
- #include <type_traits>
- #if 1
- struct B {
- int v;
- B(int i) : v(i) {}
- };
- struct D: B {
- D(int i) : B(i) {}
- };
- void fb(B const&) {}
- void fd(D const&) {}
- BOOST_STATIC_ASSERT(sizeof(B)==sizeof(D));
- template <class T, class Allocator=std::allocator<T> >
- class new_vector;
- template <class T, class Allocator>
- class new_vector : public std::vector<T,Allocator>
- {
- typedef std::vector<T,Allocator> base_type;
- public:
- new_vector() : base_type() {}
- new_vector(unsigned s) : base_type(s) {}
- };
- template <class Allocator >
- class new_vector<bool, Allocator>
- {
- //std::vector<char,typename Allocator::template rebind<char>::other > v;
- int i;
- public:
- };
- template <class T, class A>
- typename std::enable_if<!std::is_same<T, bool>::value,
- new_vector<T,A>&
- >::type
- new_vector_cast(std::vector<T,A> & v) {
- return reinterpret_cast<new_vector<T,A>&>(v);
- }
- BOOST_STATIC_ASSERT(sizeof(std::vector<int>)==sizeof(new_vector<int>));
- BOOST_STATIC_ASSERT(sizeof(std::vector<bool>)!=sizeof(new_vector<bool>));
- void fb(std::vector<int> const&) {}
- void fd(new_vector<int> const&) {}
- int main() {
- {
- std::vector<int> b(1);
- b[0] = 1;
- new_vector<int> d = new_vector_cast(b);
- BOOST_ASSERT(b[0] == d[0]);
- }
- {
- //std::vector<bool> b;
- //new_vector<bool> d = new_vector_cast(b); // compile fail
- }
- {
- std::vector<int> b(1);
- b[0] = 1;
- fd(new_vector_cast(b));
- }
- {
- new_vector<int> d(1);
- d[0] = 1;
- std::vector<int> b = d;
- BOOST_ASSERT(b[0] == d[0]);
- }
- {
- //new_vector<bool> d;
- //std::vector<bool> b = d; // compile fail
- }
- {
- new_vector<int> d(1);
- d[0] = 1;
- fd(d);
- }
- return 0;
- }
- #else
- int main() {
- {
- B b(1);
- D d = reinterpret_cast<D&>(b);
- BOOST_ASSERT(b.v == d.v);
- }
- {
- B b(1);
- fd(reinterpret_cast<D&>(b));
- }
- {
- D d(2);
- B b = d;
- BOOST_ASSERT(b.v == d.v);
- }
- {
- D d(2);
- fd(d);
- }
- return 0;
- }
- #define BOOST_THREAD_VERSION 4
- #include <iostream>
- #include <boost/thread.hpp>
- int calculate_the_answer_to_life_the_universe_and_everything()
- {
- return 42;
- }
- int main()
- {
- boost::packaged_task<int()> pt(calculate_the_answer_to_life_the_universe_and_everything);
- boost::shared_future<int> fi1 = boost::shared_future<int>(pt.get_future());
- boost::shared_future<int> fi2 = fi1;
- boost::thread task(boost::move(pt)); // launch task on a thread
- boost::wait_for_any(fi1, fi2);
- std::cout << "Wait for any returned\n";
- return (0);
- }
- #endif
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