PrivateMemoryManager.h

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * 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
 *
 *     http://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.
 */

#pragma once

#include <cstddef>
#include <unordered_map>

#include "cachelib/common/Utils.h"

namespace facebook {
namespace cachelib {

struct PrivateSegmentOpts {
  size_t alignment{1}; // alignment for mapping.
  util::NumaBitMask memBindNumaNodes;
};

class PrivateMemoryManager {
 public:
  PrivateMemoryManager() {}
  ~PrivateMemoryManager();

  void* createMapping(size_t size, PrivateSegmentOpts opts);

 private:
  std::unordered_map<void*, size_t> mappings;
};

} // namespace cachelib
} // namespace facebook