| |
| // 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/fallback_allocator.h" |
| |
| #include "pw_assert/check.h" |
| |
| namespace pw::allocator { |
| |
| void FallbackAllocator::Initialize(Allocator& primary, Allocator& secondary) { |
| primary_ = &primary; |
| secondary_ = &secondary; |
| } |
| |
| Status FallbackAllocator::DoQuery(const void* ptr, Layout layout) const { |
| PW_DCHECK(primary_ != nullptr && secondary_ != nullptr); |
| auto status = primary_->Query(ptr, layout); |
| return status.ok() ? status : secondary_->Query(ptr, layout); |
| } |
| |
| void* FallbackAllocator::DoAllocate(Layout layout) { |
| PW_DCHECK(primary_ != nullptr && secondary_ != nullptr); |
| void* ptr = primary_->Allocate(layout); |
| return ptr != nullptr ? ptr : secondary_->Allocate(layout); |
| } |
| |
| void FallbackAllocator::DoDeallocate(void* ptr, Layout layout) { |
| PW_DCHECK(primary_ != nullptr && secondary_ != nullptr); |
| if (primary_->Query(ptr, layout).ok()) { |
| primary_->Deallocate(ptr, layout); |
| } else { |
| secondary_->Deallocate(ptr, layout); |
| } |
| } |
| |
| bool FallbackAllocator::DoResize(void* ptr, Layout layout, size_t new_size) { |
| PW_DCHECK(primary_ != nullptr && secondary_ != nullptr); |
| return primary_->Query(ptr, layout).ok() |
| ? primary_->Resize(ptr, layout, new_size) |
| : secondary_->Resize(ptr, layout, new_size); |
| } |
| |
| } // namespace pw::allocator |