diff options
| -rw-r--r-- | lib/ringbuf.c | 9 | ||||
| -rw-r--r-- | lib/ringbuf.h | 10 |
2 files changed, 19 insertions, 0 deletions
diff --git a/lib/ringbuf.c b/lib/ringbuf.c index f8e9a9bd8a..d4efbe05fb 100644 --- a/lib/ringbuf.c +++ b/lib/ringbuf.c @@ -110,6 +110,15 @@ size_t ringbuf_peek(struct ringbuf *buf, size_t offset, void *data, size_t size) return copysize; } +size_t ringbuf_copy(struct ringbuf *to, struct ringbuf *from, size_t size) +{ + size_t tocopy = MIN(ringbuf_space(to), size); + uint8_t *cbuf = XCALLOC(MTYPE_TMP, tocopy); + tocopy = ringbuf_peek(from, 0, cbuf, tocopy); + XFREE(MTYPE_TMP, cbuf); + return ringbuf_put(to, cbuf, tocopy); +} + void ringbuf_reset(struct ringbuf *buf) { buf->start = buf->end = 0; diff --git a/lib/ringbuf.h b/lib/ringbuf.h index 2288a2716f..15049e3eea 100644 --- a/lib/ringbuf.h +++ b/lib/ringbuf.h @@ -99,6 +99,16 @@ size_t ringbuf_peek(struct ringbuf *buf, size_t offset, void *data, size_t size); /* + * Copy data from one ringbuf to another. + * + * @param to destination ringbuf + * @param from source ringbuf + * @param size how much data to copy + * @return amount of data copied + */ +size_t ringbuf_copy(struct ringbuf *to, struct ringbuf *from, size_t size); + +/* * Reset buffer. Does not wipe. * * @param buf |