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98 lines
2.2 KiB
98 lines
2.2 KiB
/* |
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* ZeroTier SDK - Network Virtualization Everywhere |
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* Copyright (C) 2011-2018 ZeroTier, Inc. https://www.zerotier.com/ |
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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 <http://www.gnu.org/licenses/>. |
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* |
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* -- |
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* |
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* You can be released from the requirements of the license by purchasing |
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* a commercial license. Buying such a license is mandatory as soon as you |
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* develop commercial closed-source software that incorporates or links |
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* directly against ZeroTier software without disclosing the source code |
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* of your own application. |
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*/ |
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/** |
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* @file |
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* |
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* Ring buffer implementation for network stack drivers |
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*/ |
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#ifndef ZT_RINGBUFFER_H |
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#define ZT_RINGBUFFER_H |
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#include <cstdint> |
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#include <stdlib.h> |
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typedef char bufElementType; |
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class RingBuffer |
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{ |
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private: |
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bufElementType * buf; |
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size_t size; |
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size_t begin; |
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size_t end; |
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bool wrap; |
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public: |
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/** |
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* create a RingBuffer with space for up to size elements. |
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*/ |
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explicit RingBuffer(size_t size) |
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: size(size), |
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begin(0), |
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end(0), |
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wrap(false) |
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{ |
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buf = new bufElementType[size]; |
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} |
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/* |
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RingBuffer(const RingBuffer<T> & ring) |
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{ |
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this(ring.size); |
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begin = ring.begin; |
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end = ring.end; |
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memcpy(buf, ring.buf, sizeof(T) * size); |
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} |
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*/ |
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~RingBuffer() |
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{ |
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delete[] buf; |
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} |
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// get a reference to the underlying buffer |
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bufElementType* get_buf(); |
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// adjust buffer index pointer as if we copied data in |
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size_t produce(size_t n); |
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// merely reset the buffer pointer, doesn't erase contents |
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void reset(); |
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// adjust buffer index pointer as if we copied data out |
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size_t consume(size_t n); |
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size_t write(const bufElementType * data, size_t n); |
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size_t read(bufElementType * dest, size_t n); |
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size_t count(); |
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size_t getFree(); |
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}; |
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#endif // _H
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