1 // Copyright 2024 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 // DOCSTAG: [pw_allocator-examples-custom_allocator] 17 #include <cstddef> 18 19 #include "pw_allocator/allocator.h" 20 21 namespace examples { 22 23 class CustomAllocator : public pw::Allocator { 24 public: 25 using Layout = pw::allocator::Layout; 26 27 CustomAllocator(pw::Allocator& allocator, size_t threshold); 28 29 private: 30 /// @copydoc pw::Allocator::Allocate 31 void* DoAllocate(Layout layout) override; 32 33 /// @copydoc pw::Allocator::Deallocate 34 void DoDeallocate(void* ptr) override; 35 36 /// @copydoc pw::Allocator::Deallocate DoDeallocate(void * ptr,Layout)37 void DoDeallocate(void* ptr, Layout) override { DoDeallocate(ptr); } 38 39 pw::Allocator& allocator_; 40 size_t used_ = 0; 41 size_t threshold_ = 0; 42 }; 43 44 } // namespace examples 45