| /* Ring buffer |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
| */ |
| #ifndef SIMTRACE_RINGBUF_H |
| #define SIMTRACE_RINGBUF_H |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| #include <sys/types.h> |
| |
| #define RING_BUFLEN 512 |
| |
| typedef struct ringbuf { |
| uint8_t buf[RING_BUFLEN]; |
| size_t ird; |
| size_t iwr; |
| } ringbuf; |
| |
| void rbuf_reset(volatile ringbuf * rb); |
| uint8_t rbuf_read(volatile ringbuf * rb); |
| uint8_t rbuf_peek(volatile ringbuf * rb); |
| int rbuf_write(volatile ringbuf * rb, uint8_t item); |
| bool rbuf_is_empty(volatile ringbuf * rb); |
| bool rbuf_is_full(volatile ringbuf * rb); |
| |
| #endif /* end of include guard: SIMTRACE_RINGBUF_H */ |