Method
GioPollableOutputStreamwrite_nonblocking
Declaration
gssize
g_pollable_output_stream_write_nonblocking (
GPollableOutputStream* stream,
void* buffer,
gsize count,
GCancellable* cancellable,
GError** error
)
Description
Attempts to write up to count bytes from buffer to stream, as
with g_output_stream_write(). If stream is not currently writable,
this will immediately return G_IO_ERROR_WOULD_BLOCK, and you can
use g_pollable_output_stream_create_source() to create a GSource
that will be triggered when stream is writable.
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_IO_ERROR_WOULD_BLOCK is returned some underlying
transports like D/TLS require that you re-send the same buffer and
count in the next write call.
The behaviour of this method is undefined if
g_pollable_output_stream_can_poll() returns FALSE for stream.
Parameters
buffer-
Type: An array of
guint8A buffer to write data from.
The length of the array is specified in the countargument.The data is owned by the caller of the function. count-
Type:
gsizeThe number of bytes you want to write.
cancellable-
Type:
GCancellableA
GCancellable, orNULL.The argument can be NULL.The data is owned by the caller of the function. error-
Type:
GError **The return location for a recoverable error.
The argument can be NULL.If the return location is not NULL, then you must initialize it to aNULLGError*.The argument will left initialized to NULLby the method if there are no errors.In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.