84 lines
1.8 KiB
C++
84 lines
1.8 KiB
C++
/*
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* Copyright (C) 2020, KylinSoft Co., Ltd.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef LIMONP_BOUNDED_QUEUE_HPP
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#define LIMONP_BOUNDED_QUEUE_HPP
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#include <vector>
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#include <fstream>
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#include <cassert>
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namespace limonp {
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using namespace std;
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template<class T>
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class BoundedQueue {
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public:
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explicit BoundedQueue(size_t capacity): capacity_(capacity), circular_buffer_(capacity) {
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head_ = 0;
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tail_ = 0;
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size_ = 0;
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assert(capacity_);
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}
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~BoundedQueue() {
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}
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void Clear() {
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head_ = 0;
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tail_ = 0;
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size_ = 0;
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}
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bool Empty() const {
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return !size_;
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}
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bool Full() const {
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return capacity_ == size_;
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}
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size_t Size() const {
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return size_;
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}
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size_t Capacity() const {
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return capacity_;
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}
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void Push(const T& t) {
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assert(!Full());
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circular_buffer_[tail_] = t;
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tail_ = (tail_ + 1) % capacity_;
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size_ ++;
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}
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T Pop() {
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assert(!Empty());
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size_t oldPos = head_;
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head_ = (head_ + 1) % capacity_;
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size_ --;
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return circular_buffer_[oldPos];
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}
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private:
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size_t head_;
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size_t tail_;
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size_t size_;
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const size_t capacity_;
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vector<T> circular_buffer_;
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}; // class BoundedQueue
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} // namespace limonp
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#endif
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