| // 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/allocator_metric_proxy.h" |
| |
| #include <cstddef> |
| |
| #include "pw_assert/check.h" |
| #include "pw_metric/metric.h" |
| |
| namespace pw::allocator { |
| |
| void AllocatorMetricProxy::Initialize(Allocator& allocator) { |
| PW_DCHECK(allocator_ == nullptr); |
| allocator_ = &allocator; |
| // Manually add the metrics to the metric group to allow the constructor to |
| // remain constexpr. |
| memusage_.Add(used_); |
| memusage_.Add(peak_); |
| memusage_.Add(count_); |
| } |
| |
| Status AllocatorMetricProxy::DoQuery(const void* ptr, Layout layout) const { |
| PW_DCHECK_NOTNULL(allocator_); |
| return allocator_->Query(ptr, layout); |
| } |
| |
| void* AllocatorMetricProxy::DoAllocate(Layout layout) { |
| PW_DCHECK_NOTNULL(allocator_); |
| void* ptr = allocator_->Allocate(layout); |
| if (ptr == nullptr) { |
| return nullptr; |
| } |
| used_.Increment(layout.size()); |
| if (used_.value() > peak_.value()) { |
| peak_.Set(used_.value()); |
| } |
| count_.Increment(); |
| return ptr; |
| } |
| |
| void AllocatorMetricProxy::DoDeallocate(void* ptr, Layout layout) { |
| PW_DCHECK_NOTNULL(allocator_); |
| allocator_->Deallocate(ptr, layout); |
| if (ptr == nullptr) { |
| return; |
| } |
| PW_DCHECK_UINT_GE(used_.value(), layout.size()); |
| PW_DCHECK_UINT_NE(count_.value(), 0); |
| used_.Set(used_.value() - layout.size()); |
| count_.Set(count_.value() - 1); |
| } |
| |
| bool AllocatorMetricProxy::DoResize(void* ptr, Layout layout, size_t new_size) { |
| PW_DCHECK_NOTNULL(allocator_); |
| if (!allocator_->Resize(ptr, layout, new_size)) { |
| return false; |
| } |
| PW_DCHECK_UINT_GE(used_.value(), layout.size()); |
| used_.Set(used_.value() - layout.size() + new_size); |
| if (used_.value() > peak_.value()) { |
| peak_.Set(used_.value()); |
| } |
| return true; |
| } |
| |
| } // namespace pw::allocator |