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//===----------------------------------------------------------------------===//
//
// 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
// TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
// UNSUPPORTED: availability-pmr-missing
// <memory_resource>
// class monotonic_buffer_resource
#include <memory_resource>
#include <cassert>
#include "test_macros.h"
#include "count_new.h"
int main(int, char**) {
globalMemCounter.reset();
auto mono1 = std::pmr::monotonic_buffer_resource(1024, std::pmr::new_delete_resource());
std::pmr::memory_resource& r1 = mono1;
constexpr std::size_t big_alignment = 8 * alignof(std::max_align_t);
static_assert(big_alignment > 4);
void* ret = r1.allocate(2048, big_alignment);
assert(ret != nullptr);
ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkAlignedNewCalledEq(1));
ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewSizeGe(2048));
ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewAlignEq(big_alignment));
// Check that a single highly aligned allocation request doesn't
// permanently "poison" the resource to allocate only super-aligned
// blocks of memory.
ret = r1.allocate(globalMemCounter.last_new_size, 4);
assert(ret != nullptr);
ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(2));
ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkAlignedNewCalledEq(1));
return 0;
}
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