51 lines
999 B
C++
51 lines
999 B
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <atomic>
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#include <vector>
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namespace OpenVulkano
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{
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namespace Data
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{
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template <class T>
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class ReadOnlyAtomicArrayQueue final
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{
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T* data;
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std::atomic<size_t> size;
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public:
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ReadOnlyAtomicArrayQueue(std::vector<T>& data)
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{
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this->data = data.data();
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size.store(data.size());
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}
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ReadOnlyAtomicArrayQueue(T* data, size_t size)
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{
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this->data = data;
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this->size.store(size);
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}
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~ReadOnlyAtomicArrayQueue() = default;
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[[nodiscard]] size_t GetSize() const
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{
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return size.load(std::memory_order_relaxed);
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}
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T* Pop()
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{
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size_t s = size.load(std::memory_order_relaxed);
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while (size > 0 && !size.compare_exchange_weak(s, s - 1));
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if (s > 0) return &data[s - 1];
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return nullptr;
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}
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};
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}
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} |