int main() {
ringbuf *r;
size_t sz;
int rc;
char *d;
r = ringbuf_new(11);
printf("putting 7 bytes into buffer of sz 11\n");
rc = ringbuf_put(r, z, 7);
printf("put: %s\n", (rc == -1) ? "failed" : "ok");
printf("consuming 7\n");
ringbuf_mark_consumed(r, 7);
printf("next put of > 4 bytes wraps buffer, writing 5\n");
rc = ringbuf_put(r, z, 5);
printf("put: %s\n", (rc == -1) ? "failed" : "ok");
sz = ringbuf_get_next_chunk(r, &d);
printf("chunk sz %lu: sz, %.*s\n", sz, (int)sz, d);
printf("reading 3, of 5 available\n");
ringbuf_mark_consumed(r, 3);
printf("next read is last byte before wrapping\n");
sz = ringbuf_get_next_chunk(r, &d);
printf("chunk sz %lu: sz, %.*s\n", sz, (int)sz, d);
ringbuf_mark_consumed(r, 1);
printf("next read starts reading from wrapped part\n");
sz = ringbuf_get_next_chunk(r, &d);
printf("chunk sz %lu: sz, %.*s\n", sz, (int)sz, d);
ringbuf_mark_consumed(r, 1);
printf("nothing left\n");
sz = ringbuf_get_pending_size(r);
printf("size = %lu\n", sz);
ringbuf_free(r);
return 0;
}
int main() {
ringbuf *r;
size_t sz;
int rc;
char *d;
char buf[32+11]; /* room for struct ring + 11 bytes of ring */
r = ringbuf_take(buf,sizeof(buf));
printf("gave buffer (ringbuf_take) expecting 11 free bytes\n");
sz = ringbuf_get_freespace(r);
printf("buffer has %lu free bytes\n", sz);
printf("putting 7 bytes into buffer of sz 11\n");
rc = ringbuf_put(r, z, 7);
printf("put: %s\n", (rc == -1) ? "failed" : "ok");
sz = ringbuf_get_freespace(r);
printf("buffer has %lu free bytes\n", sz);
printf("consuming 3\n");
ringbuf_mark_consumed(r, 3);
sz = ringbuf_get_freespace(r);
printf("buffer has %lu free bytes\n", sz);
sz = ringbuf_get_next_chunk(r, &d);
printf("chunk sz %lu: sz, %.*s\n", sz, (int)sz, d);
printf("marking clear\n");
ringbuf_clear(r);
sz = ringbuf_get_freespace(r);
printf("buffer has %lu free bytes\n", sz);
printf("nothing left\n");
sz = ringbuf_get_pending_size(r);
printf("pending size = %lu\n", sz);
sz = ringbuf_get_freespace(r);
printf("buffer has %lu free bytes\n", sz);
/* do not ringbuf_free(r); since we used ringbuf_take */
return 0;
}
