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72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSRAN_POOL_INTERFACE_H
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#define SRSRAN_POOL_INTERFACE_H
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#include "srsran/adt/move_callback.h"
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namespace srsran {
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/// unique ptr with type-erased dtor, so that it can be used by any object or memory pool
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constexpr size_t unique_pool_deleter_small_buffer = sizeof(void*) * 2u;
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template <typename T>
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using unique_pool_ptr = std::unique_ptr<T, srsran::move_callback<void(T*), unique_pool_deleter_small_buffer> >;
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/// Common object pool interface
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template <typename T>
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class obj_pool_itf
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{
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public:
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using object_type = T;
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obj_pool_itf() = default;
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// Object pool address should not change
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obj_pool_itf(const obj_pool_itf&) = delete;
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obj_pool_itf(obj_pool_itf&&) = delete;
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obj_pool_itf& operator=(const obj_pool_itf&) = delete;
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obj_pool_itf& operator=(obj_pool_itf&&) = delete;
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virtual ~obj_pool_itf() = default;
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virtual unique_pool_ptr<T> make() = 0;
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};
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/// Allocate object in memory pool
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template <typename T, typename MemPool, typename... Args>
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unique_pool_ptr<T> make_pool_obj_with_heap_fallback(MemPool& mempool, Args&&... args)
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{
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void* block = mempool.allocate(sizeof(T), alignof(T));
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if (block == nullptr) {
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return unique_pool_ptr<T>(new T(std::forward<Args>(args)...), std::default_delete<T>());
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}
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new (block) T(std::forward<Args>(args)...);
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return unique_pool_ptr<T>(block, [&mempool](T* ptr) {
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if (ptr != nullptr) {
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ptr->~T();
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mempool.deallocate(ptr);
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}
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});
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}
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} // namespace srsran
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#endif // SRSRAN_POOL_INTERFACE_H
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