| // Copyright 2023 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #include "pw_allocator/libc_allocator.h" |
| |
| #include <algorithm> |
| #include <cstddef> |
| #include <cstdlib> |
| #include <cstring> |
| |
| namespace pw::allocator { |
| |
| void* LibCAllocator::DoAllocate(Layout layout) { |
| // TODO: b/301930507 - `aligned_alloc` is not portable. Return null for larger |
| // allocations for now. |
| return layout.alignment() <= alignof(std::max_align_t) |
| ? std::malloc(layout.size()) |
| : nullptr; |
| } |
| |
| void LibCAllocator::DoDeallocate(void* ptr) { std::free(ptr); } |
| |
| void* LibCAllocator::DoReallocate(void* ptr, Layout new_layout) { |
| // TODO: b/301930507 - `aligned_alloc` is not portable. Return null for larger |
| // allocations for now. |
| return new_layout.alignment() <= alignof(std::max_align_t) |
| ? std::realloc(ptr, new_layout.size()) |
| : nullptr; |
| } |
| |
| LibCAllocator& GetLibCAllocator() { |
| static LibCAllocator kInstance; |
| return kInstance; |
| } |
| |
| } // namespace pw::allocator |