Method
GioPollableOutputStreamwritev_nonblocking
Declaration
GPollableReturn
g_pollable_output_stream_writev_nonblocking (
GPollableOutputStream* stream,
const GOutputVector* vectors,
gsize n_vectors,
gsize* bytes_written,
GCancellable* cancellable,
GError** error
)
Description
Attempts to write the bytes contained in the n_vectors
vectors
to stream
,
as with g_output_stream_writev(). If stream
is not currently writable,
this will immediately return %G_POLLABLE_RETURN_WOULD_BLOCK
, and you can
use g_pollable_output_stream_create_source()
to create a GSource
that will be triggered when stream
is writable. error
will not be
set in that case.
Note that since this method never blocks, you cannot actually
use cancellable
to cancel it. However, it will return an error
if cancellable
has already been cancelled when you call, which
may happen if you call this method after a source triggers due
to having been cancelled.
Also note that if G_POLLABLE_RETURN_WOULD_BLOCK
is returned some underlying
transports like D/TLS require that you re-send the same vectors
and
n_vectors
in the next write call.
Available since: | 2.60 |
Parameters
vectors |
An array of GOutputVector |
The buffer containing the |
|
The length of the array is specified in the n_vectors argument. | |
The data is owned by the caller of the function. | |
n_vectors |
gsize |
The number of vectors to write. |
|
bytes_written |
gsize* |
Location to store the number of bytes that were written to the stream. |
|
The argument will be set by the function. | |
The argument can be NULL . | |
cancellable |
GCancellable |
A |
|
The argument can be NULL . | |
The data is owned by the caller of the function. | |
error |
GError ** |
The return location for a GError* , or NULL . |
Return value
Returns: | GPollableReturn |
% |