vrb_move
moves data from one virtual ring buffer to another, up to the lesser of
the available data in the source, the available space in the target,
and the maximum size specified.
ARGUMENTS
vrb_p target
specifies which virtual ring buffer to put data into.
vrb_p source
specifies which virtual ring buffer to get data from.
size_t size
specifies the maximum length to move, or
~0
for unlimited (all of buffer).
RETURN VALUE
size_t
If successful, the actual length of data moved is returned.
If an error occurs, ~0 is returned.
ERRORS
If an error is returned, then
errno
will have the following value:
EINVAL
An invalid virtual ring buffer pointer was specified
for either the target or the source.