| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <future> |
| |
| // class promise<R> |
| |
| // void swap(promise& other); |
| |
| // template <class R> void swap(promise<R>& x, promise<R>& y); |
| |
| #include <future> |
| #include <cassert> |
| |
| #include "../test_allocator.h" |
| |
| int main() |
| { |
| assert(test_alloc_base::count == 0); |
| { |
| std::promise<int> p0(std::allocator_arg, test_allocator<int>()); |
| std::promise<int> p(std::allocator_arg, test_allocator<int>()); |
| assert(test_alloc_base::count == 2); |
| p.swap(p0); |
| assert(test_alloc_base::count == 2); |
| std::future<int> f = p.get_future(); |
| assert(test_alloc_base::count == 2); |
| assert(f.valid()); |
| f = p0.get_future(); |
| assert(f.valid()); |
| assert(test_alloc_base::count == 2); |
| } |
| assert(test_alloc_base::count == 0); |
| { |
| std::promise<int> p0(std::allocator_arg, test_allocator<int>()); |
| std::promise<int> p(std::allocator_arg, test_allocator<int>()); |
| assert(test_alloc_base::count == 2); |
| swap(p, p0); |
| assert(test_alloc_base::count == 2); |
| std::future<int> f = p.get_future(); |
| assert(test_alloc_base::count == 2); |
| assert(f.valid()); |
| f = p0.get_future(); |
| assert(f.valid()); |
| assert(test_alloc_base::count == 2); |
| } |
| assert(test_alloc_base::count == 0); |
| { |
| std::promise<int> p0(std::allocator_arg, test_allocator<int>()); |
| std::promise<int> p; |
| assert(test_alloc_base::count == 1); |
| p.swap(p0); |
| assert(test_alloc_base::count == 1); |
| std::future<int> f = p.get_future(); |
| assert(test_alloc_base::count == 1); |
| assert(f.valid()); |
| f = p0.get_future(); |
| assert(f.valid()); |
| assert(test_alloc_base::count == 1); |
| } |
| assert(test_alloc_base::count == 0); |
| { |
| std::promise<int> p0(std::allocator_arg, test_allocator<int>()); |
| std::promise<int> p; |
| assert(test_alloc_base::count == 1); |
| swap(p, p0); |
| assert(test_alloc_base::count == 1); |
| std::future<int> f = p.get_future(); |
| assert(test_alloc_base::count == 1); |
| assert(f.valid()); |
| f = p0.get_future(); |
| assert(f.valid()); |
| assert(test_alloc_base::count == 1); |
| } |
| assert(test_alloc_base::count == 0); |
| } |