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f721e69bc1
Remove the paragraph about writing to the Free Software Foundation's mailing address. The FSF has changed addresses in the past, and may do so again. In 2021 this is not useful, let's rather have a bit less boilerplate at the start of source files. Change-Id: Ie0a3b2273383adbb3303faffd6ff96be7f4cae99
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* Ring buffer
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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 2 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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#ifndef SIMTRACE_RINGBUF_H
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#define SIMTRACE_RINGBUF_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <sys/types.h>
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#define RING_BUFLEN 1024
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typedef struct ringbuf {
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uint8_t buf[RING_BUFLEN];
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size_t ird;
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size_t iwr;
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} ringbuf;
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void rbuf_reset(volatile ringbuf * rb);
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uint8_t rbuf_read(volatile ringbuf * rb);
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uint8_t rbuf_peek(volatile ringbuf * rb);
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int rbuf_write(volatile ringbuf * rb, uint8_t item);
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bool rbuf_is_empty(volatile ringbuf * rb);
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bool rbuf_is_full(volatile ringbuf * rb);
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#endif /* end of include guard: SIMTRACE_RINGBUF_H */
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