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 // template <class Allocator> 18 // promise(allocator_arg_t, const Allocator& a); 19 20 #include <future> 21 #include <cassert> 22 23 #include "test_allocator.h" 24 #include "min_allocator.h" 25 26 int main() 27 { 28 assert(test_alloc_base::alloc_count == 0); 29 { 30 std::promise<int> p(std::allocator_arg, test_allocator<int>(42)); 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 } 36 assert(test_alloc_base::alloc_count == 0); 37 { 38 std::promise<int&> p(std::allocator_arg, test_allocator<int>(42)); 39 assert(test_alloc_base::alloc_count == 1); 40 std::future<int&> f = p.get_future(); 41 assert(test_alloc_base::alloc_count == 1); 42 assert(f.valid()); 43 } 44 assert(test_alloc_base::alloc_count == 0); 45 { 46 std::promise<void> p(std::allocator_arg, test_allocator<void>(42)); 47 assert(test_alloc_base::alloc_count == 1); 48 std::future<void> f = p.get_future(); 49 assert(test_alloc_base::alloc_count == 1); 50 assert(f.valid()); 51 } 52 assert(test_alloc_base::alloc_count == 0); 53 // Test with a minimal allocator 54 { 55 std::promise<int> p(std::allocator_arg, bare_allocator<void>()); 56 std::future<int> f = p.get_future(); 57 assert(f.valid()); 58 } 59 { 60 std::promise<int&> p(std::allocator_arg, bare_allocator<void>()); 61 std::future<int&> f = p.get_future(); 62 assert(f.valid()); 63 } 64 { 65 std::promise<void> p(std::allocator_arg, bare_allocator<void>()); 66 std::future<void> f = p.get_future(); 67 assert(f.valid()); 68 } 69 // Test with a minimal allocator that returns class-type pointers 70 { 71 std::promise<int> p(std::allocator_arg, min_allocator<void>()); 72 std::future<int> f = p.get_future(); 73 assert(f.valid()); 74 } 75 { 76 std::promise<int&> p(std::allocator_arg, min_allocator<void>()); 77 std::future<int&> f = p.get_future(); 78 assert(f.valid()); 79 } 80 { 81 std::promise<void> p(std::allocator_arg, min_allocator<void>()); 82 std::future<void> f = p.get_future(); 83 assert(f.valid()); 84 } 85 } 86
