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64 lines
2.5 KiB
C
64 lines
2.5 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPEG-HTTP streamer. #
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# #
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# Copyright (C) 2018-2024 Maxim Devaev <mdevaev@gmail.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 <https://www.gnu.org/licenses/>. #
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# #
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*****************************************************************************/
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#pragma once
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#include "types.h"
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#include "queue.h"
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typedef struct {
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uz capacity;
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void **items;
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uint *places;
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us_queue_s *producer;
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us_queue_s *consumer;
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} us_ring_s;
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#define US_RING_INIT_WITH_ITEMS(x_ring, x_capacity, x_init_item) { \
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(x_ring) = us_ring_init(x_capacity); \
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for (uz m_ri = 0; m_ri < (x_ring)->capacity; ++m_ri) { \
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(x_ring)->items[m_ri] = x_init_item(); \
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} \
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}
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#define US_RING_DELETE_WITH_ITEMS(x_ring, x_destroy_item) { \
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if (x_ring) { \
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for (uz m_ri = 0; m_ri < (x_ring)->capacity; ++m_ri) { \
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x_destroy_item((x_ring)->items[m_ri]); \
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} \
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us_ring_destroy(x_ring); \
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} \
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}
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us_ring_s *us_ring_init(uint capacity);
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void us_ring_destroy(us_ring_s *ring);
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int us_ring_producer_acquire(us_ring_s *ring, ldf timeout);
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void us_ring_producer_release(us_ring_s *ring, uint ri);
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int us_ring_consumer_acquire(us_ring_s *ring, ldf timeout);
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void us_ring_consumer_release(us_ring_s *ring, uint ri);
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