151c0b2f7Stbbdev /* 2*b15aabb3Stbbdev Copyright (c) 2020-2021 Intel Corporation 351c0b2f7Stbbdev 451c0b2f7Stbbdev Licensed under the Apache License, Version 2.0 (the "License"); 551c0b2f7Stbbdev you may not use this file except in compliance with the License. 651c0b2f7Stbbdev You may obtain a copy of the License at 751c0b2f7Stbbdev 851c0b2f7Stbbdev http://www.apache.org/licenses/LICENSE-2.0 951c0b2f7Stbbdev 1051c0b2f7Stbbdev Unless required by applicable law or agreed to in writing, software 1151c0b2f7Stbbdev distributed under the License is distributed on an "AS IS" BASIS, 1251c0b2f7Stbbdev WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1351c0b2f7Stbbdev See the License for the specific language governing permissions and 1451c0b2f7Stbbdev limitations under the License. 1551c0b2f7Stbbdev */ 1651c0b2f7Stbbdev 1751c0b2f7Stbbdev #ifndef __TBB_small_object_pool_impl_H 1851c0b2f7Stbbdev #define __TBB_small_object_pool_impl_H 1951c0b2f7Stbbdev 2049e08aacStbbdev #include "oneapi/tbb/detail/_small_object_pool.h" 2149e08aacStbbdev #include "oneapi/tbb/detail/_utils.h" 2251c0b2f7Stbbdev 2351c0b2f7Stbbdev #include <cstddef> 2451c0b2f7Stbbdev #include <cstdint> 2551c0b2f7Stbbdev #include <atomic> 2651c0b2f7Stbbdev 2751c0b2f7Stbbdev 2851c0b2f7Stbbdev namespace tbb { 2951c0b2f7Stbbdev namespace detail { 3051c0b2f7Stbbdev namespace r1 { 3151c0b2f7Stbbdev 3251c0b2f7Stbbdev class thread_data; 3351c0b2f7Stbbdev 3451c0b2f7Stbbdev class small_object_pool_impl : public d1::small_object_pool 3551c0b2f7Stbbdev { 3651c0b2f7Stbbdev static constexpr std::size_t small_object_size = 256; 3751c0b2f7Stbbdev struct small_object { 3851c0b2f7Stbbdev small_object* next; 3951c0b2f7Stbbdev }; 4051c0b2f7Stbbdev static small_object* const dead_public_list; 4151c0b2f7Stbbdev public: 4251c0b2f7Stbbdev void* allocate_impl(small_object_pool*& allocator, std::size_t number_of_bytes); 4351c0b2f7Stbbdev void deallocate_impl(void* ptr, std::size_t number_of_bytes, thread_data& td); 4451c0b2f7Stbbdev void destroy(); 4551c0b2f7Stbbdev private: 4651c0b2f7Stbbdev static std::int64_t cleanup_list(small_object* list); 4751c0b2f7Stbbdev ~small_object_pool_impl() = default; 4851c0b2f7Stbbdev private: alignas(max_nfs_size)4951c0b2f7Stbbdev alignas(max_nfs_size) small_object* m_private_list; 5051c0b2f7Stbbdev std::int64_t m_private_counter{}; 5151c0b2f7Stbbdev alignas(max_nfs_size) std::atomic<small_object*> m_public_list; 5251c0b2f7Stbbdev std::atomic<std::int64_t> m_public_counter{}; 5351c0b2f7Stbbdev }; 5451c0b2f7Stbbdev 5551c0b2f7Stbbdev } // namespace r1 5651c0b2f7Stbbdev } // namespace detail 5751c0b2f7Stbbdev } // namespace tbb 5851c0b2f7Stbbdev 5951c0b2f7Stbbdev #endif /* __TBB_small_object_pool_impl_H */ 60