1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14 10 // TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed 11 // UNSUPPORTED: availability-pmr-missing 12 13 // <memory_resource> 14 15 // class unsynchronized_pool_resource 16 17 #include <cassert> 18 #include <cstddef> 19 #include <memory> // std::align 20 #include <memory_resource> 21 22 #include "count_new.h" 23 #include "test_macros.h" 24 25 bool is_aligned_to(void* p, std::size_t alignment) { 26 void* p2 = p; 27 std::size_t space = 1; 28 void* result = std::align(alignment, 1, p2, space); 29 return (result == p); 30 } 31 32 int main(int, char**) { 33 globalMemCounter.reset(); 34 std::pmr::pool_options opts{1, 1024}; 35 auto unsync1 = std::pmr::unsynchronized_pool_resource(opts, std::pmr::new_delete_resource()); 36 std::pmr::memory_resource& r1 = unsync1; 37 38 constexpr std::size_t big_alignment = 8 * alignof(std::max_align_t); 39 static_assert(big_alignment > 4); 40 41 assert(globalMemCounter.checkNewCalledEq(0)); 42 43 void* ret = r1.allocate(2048, big_alignment); 44 assert(ret != nullptr); 45 assert(is_aligned_to(ret, big_alignment)); 46 ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0)); 47 48 ret = r1.allocate(16, 4); 49 assert(ret != nullptr); 50 assert(is_aligned_to(ret, 4)); 51 ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(1)); 52 53 return 0; 54 } 55