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 // REQUIRES: c++experimental 11 // UNSUPPORTED: c++98, c++03 12 13 // <experimental/memory_resource> 14 15 // memory_resource * new_delete_resource() 16 17 #include <experimental/memory_resource> 18 #include <type_traits> 19 #include <cassert> 20 21 #include "count_new.hpp" 22 23 namespace ex = std::experimental::pmr; 24 25 struct assert_on_compare : public ex::memory_resource 26 { 27 protected: 28 virtual void * do_allocate(size_t, size_t) 29 { assert(false); } 30 31 virtual void do_deallocate(void *, size_t, size_t) 32 { assert(false); } 33 34 virtual bool do_is_equal(ex::memory_resource const &) const noexcept 35 { assert(false); } 36 }; 37 38 void test_return() 39 { 40 { 41 static_assert(std::is_same< 42 decltype(ex::new_delete_resource()), ex::memory_resource* 43 >::value, ""); 44 } 45 // assert not null 46 { 47 assert(ex::new_delete_resource()); 48 } 49 // assert same return value 50 { 51 assert(ex::new_delete_resource() == ex::new_delete_resource()); 52 } 53 } 54 55 void test_equality() 56 { 57 // Same object 58 { 59 ex::memory_resource & r1 = *ex::new_delete_resource(); 60 ex::memory_resource & r2 = *ex::new_delete_resource(); 61 // check both calls returned the same object 62 assert(&r1 == &r2); 63 // check for proper equality semantics 64 assert(r1 == r2); 65 assert(r2 == r1); 66 assert(!(r1 != r2)); 67 assert(!(r2 != r1)); 68 } 69 // Different types 70 { 71 ex::memory_resource & r1 = *ex::new_delete_resource(); 72 assert_on_compare c; 73 ex::memory_resource & r2 = c; 74 assert(r1 != r2); 75 assert(!(r1 == r2)); 76 } 77 } 78 79 void test_allocate_deallocate() 80 { 81 ex::memory_resource & r1 = *ex::new_delete_resource(); 82 83 globalMemCounter.reset(); 84 85 void *ret = r1.allocate(50); 86 assert(ret); 87 assert(globalMemCounter.checkOutstandingNewEq(1)); 88 assert(globalMemCounter.checkLastNewSizeEq(50)); 89 90 r1.deallocate(ret, 1); 91 assert(globalMemCounter.checkOutstandingNewEq(0)); 92 assert(globalMemCounter.checkDeleteCalledEq(1)); 93 94 } 95 96 int main() 97 { 98 static_assert(noexcept(ex::new_delete_resource()), "Must be noexcept"); 99 test_return(); 100 test_equality(); 101 test_allocate_deallocate(); 102 } 103
