mirror of
https://github.com/gozfree/gear-lib.git
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51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/******************************************************************************
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* Copyright (C) 2014-2020 Zhifeng Gong <gozfree@163.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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******************************************************************************/
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#ifndef LIBRINGBUFFER_H
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#define LIBRINGBUFFER_H
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#include <stdlib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct ringbuffer {
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void *buffer;
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int length;
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size_t start;
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size_t end;
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} ringbuffer;
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struct ringbuffer *rb_create(int len);
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void rb_destroy(struct ringbuffer *rb);
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ssize_t rb_write(struct ringbuffer *rb, const void *buf, size_t len);
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ssize_t rb_read(struct ringbuffer *rb, void *buf, size_t len);
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void *rb_dump(struct ringbuffer *rb, int *len);
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void rb_cleanup(struct ringbuffer *rb);
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int rb_get_space_free(struct ringbuffer *rb);
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int rb_get_space_used(struct ringbuffer *rb);
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#ifdef __cplusplus
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}
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#endif
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#endif
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