90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
// =====================================================================================================================
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// Copyright 2024 Medusa Slockbower
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// =====================================================================================================================
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#ifndef OBJECT_POOL_H
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#define OBJECT_POOL_H
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#include <stack>
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#include <vector>
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#include <tuple>
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#include <unordered_map>
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#include "template_utils.h"
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namespace open_cpp_utils
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{
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template<typename T, typename _Hash = std::unordered_map<uint64_t, int64_t>>
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class object_pool
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{
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// Typedefs ============================================================================================================
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public:
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using value_type = T;
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using pointer = T*;
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using const_pointer = const T*;
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using reference = T&;
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using const_reference = const T&;
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using index_type = int64_t;
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using uuid_type = uint64_t;
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private:
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using node = std::tuple<value_type, bool>;
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// Constants ===========================================================================================================
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public:
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static constexpr std::integral_constant<index_type, -1> nullidx{};
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// Functions ===========================================================================================================
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public:
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// Constructors & Destructor -------------------------------------------------------------------------------------------
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object_pool();
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void clear();
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void reset();
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void cleanup();
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uuid_type insert(const_reference& value);
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void erase(uuid_type id);
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void erase(index_type idx);
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// Accessors -----------------------------------------------------------------------------------------------------------
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reference operator[](uuid_type id);
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const_reference operator[](uuid_type id) const;
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bool operator()(uuid_type id) const;
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reference operator[](index_type idx);
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const_reference operator[](index_type idx) const;
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bool operator()(index_type idx) const;
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private:
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std::vector<node> data_;
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_Hash map_;
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std::stack<index_type> freed_;
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};
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} // open_cpp_utils
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#endif //OBJECT_POOL_H
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