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 // UNSUPPORTED: libcpp-has-no-threads 11 // UNSUPPORTED: c++98, c++03 12 13 // <future> 14 15 // class promise<R> 16 17 // promise(promise&& rhs); 18 19 #include <future> 20 #include <cassert> 21 22 #include "test_macros.h" 23 #include "test_allocator.h" 24 main()25int main() 26 { 27 assert(test_alloc_base::alloc_count == 0); 28 { 29 std::promise<int> p0(std::allocator_arg, test_allocator<int>()); 30 std::promise<int> p(std::move(p0)); 31 assert(test_alloc_base::alloc_count == 1); 32 std::future<int> f = p.get_future(); 33 assert(test_alloc_base::alloc_count == 1); 34 assert(f.valid()); 35 #ifndef TEST_HAS_NO_EXCEPTIONS 36 try 37 { 38 f = p0.get_future(); 39 assert(false); 40 } 41 catch (const std::future_error& e) 42 { 43 assert(e.code() == make_error_code(std::future_errc::no_state)); 44 } 45 assert(test_alloc_base::alloc_count == 1); 46 #endif 47 } 48 assert(test_alloc_base::alloc_count == 0); 49 { 50 std::promise<int&> p0(std::allocator_arg, test_allocator<int>()); 51 std::promise<int&> p(std::move(p0)); 52 assert(test_alloc_base::alloc_count == 1); 53 std::future<int&> f = p.get_future(); 54 assert(test_alloc_base::alloc_count == 1); 55 assert(f.valid()); 56 #ifndef TEST_HAS_NO_EXCEPTIONS 57 try 58 { 59 f = p0.get_future(); 60 assert(false); 61 } 62 catch (const std::future_error& e) 63 { 64 assert(e.code() == make_error_code(std::future_errc::no_state)); 65 } 66 assert(test_alloc_base::alloc_count == 1); 67 #endif 68 } 69 assert(test_alloc_base::alloc_count == 0); 70 { 71 std::promise<void> p0(std::allocator_arg, test_allocator<void>()); 72 std::promise<void> p(std::move(p0)); 73 assert(test_alloc_base::alloc_count == 1); 74 std::future<void> f = p.get_future(); 75 assert(test_alloc_base::alloc_count == 1); 76 assert(f.valid()); 77 #ifndef TEST_HAS_NO_EXCEPTIONS 78 try 79 { 80 f = p0.get_future(); 81 assert(false); 82 } 83 catch (const std::future_error& e) 84 { 85 assert(e.code() == make_error_code(std::future_errc::no_state)); 86 } 87 assert(test_alloc_base::alloc_count == 1); 88 #endif 89 } 90 assert(test_alloc_base::alloc_count == 0); 91 } 92