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40 lines
1.3 KiB
C
40 lines
1.3 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
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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 512
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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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