pw_malloc/dual_first_fit_block_allocator.cc

// Copyright 2024 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/dual_first_fit_block_allocator.h"

#include "pw_malloc/config.h"
#include "pw_malloc/malloc.h"

namespace pw::malloc {
namespace {

using DualFirstFitBlockAllocator =
    ::pw::allocator::DualFirstFitBlockAllocator<PW_MALLOC_BLOCK_OFFSET_TYPE,
                                                PW_MALLOC_BLOCK_POISON_INTERVAL,
                                                PW_MALLOC_BLOCK_ALIGNMENT>;

DualFirstFitBlockAllocator& GetDualFirstFitBlockAllocator() {
  static DualFirstFitBlockAllocator system_allocator;
  return system_allocator;
}

}  // namespace

Allocator* GetSystemAllocator() {
  auto& system_allocator = GetDualFirstFitBlockAllocator();
  return &system_allocator;
}

void InitSystemAllocator(ByteSpan heap) {
  auto& system_allocator = GetDualFirstFitBlockAllocator();
  system_allocator.set_threshold(PW_MALLOC_DUAL_FIRST_FIT_THRESHOLD);
  system_allocator.Init(heap);
}

}  // namespace pw::malloc