| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14 |
| // XFAIL: availability-pmr-missing |
| |
| // <memory_resource> |
| |
| // class monotonic_buffer_resource |
| |
| #include <memory_resource> |
| #include <cassert> |
| |
| #include "count_new.h" |
| #include "test_macros.h" |
| |
| int main(int, char**) { |
| globalMemCounter.reset(); |
| char buffer[100]; |
| auto mono1 = std::pmr::monotonic_buffer_resource(buffer, sizeof buffer, std::pmr::new_delete_resource()); |
| std::pmr::memory_resource& r1 = mono1; |
| |
| // Check that construction with a buffer does not allocate anything from the upstream |
| assert(globalMemCounter.checkNewCalledEq(0)); |
| |
| // Check that an allocation that fits in the buffer does not allocate anything from the upstream |
| void* ret = r1.allocate(50); |
| assert(ret); |
| assert(globalMemCounter.checkNewCalledEq(0)); |
| |
| // Check a second allocation |
| ret = r1.allocate(20); |
| assert(ret); |
| assert(globalMemCounter.checkNewCalledEq(0)); |
| |
| r1.deallocate(ret, 50); |
| assert(globalMemCounter.checkDeleteCalledEq(0)); |
| |
| // Check an allocation that doesn't fit in the original buffer |
| ret = r1.allocate(50); |
| assert(ret); |
| ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1)); |
| |
| r1.deallocate(ret, 50); |
| assert(globalMemCounter.checkDeleteCalledEq(0)); |
| |
| mono1.release(); |
| ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1)); |
| assert(globalMemCounter.checkOutstandingNewEq(0)); |
| |
| return 0; |
| } |