Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- include/io/buffer.h | 10 ++++++++++ io/buffer.c | 14 ++++++++++++++ 2 files changed, 24 insertions(+)
diff --git a/include/io/buffer.h b/include/io/buffer.h index cffad19..1dddc73 100644 --- a/include/io/buffer.h +++ b/include/io/buffer.h @@ -127,4 +127,14 @@ uint8_t *qio_buffer_end(QIOBuffer *buffer); */ gboolean qio_buffer_empty(QIOBuffer *buffer); +/** + * qio_buffer_move_empty: + * @to: destination buffer object + * @from: source buffer object + * + * Moves buffer, without copying data. 'to' buffer must be empty. + * 'from' buffer is empty and zero-sized on return. + */ +void qio_buffer_move_empty(QIOBuffer *to, QIOBuffer *from); + #endif /* QIO_BUFFER_H__ */ diff --git a/io/buffer.c b/io/buffer.c index daa3ebf..09ca321 100644 --- a/io/buffer.c +++ b/io/buffer.c @@ -77,3 +77,17 @@ void qio_buffer_advance(QIOBuffer *buffer, size_t len) (buffer->offset - len)); buffer->offset -= len; } + +void qio_buffer_move_empty(QIOBuffer *to, QIOBuffer *from) +{ + assert(to->offset == 0); + + g_free(to->buffer); + to->offset = from->offset; + to->capacity = from->capacity; + to->buffer = from->buffer; + + from->offset = 0; + from->capacity = 0; + from->buffer = NULL; +} -- 1.8.3.1