OutputStream.writevAllAsync

void writevAllAsync(gio.types.OutputVector[]  vectors,  int  ioPriority,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

Request an asynchronous write of the bytes contained in the n_vectors vectors into the stream. When the operation is finished callback will be called. You can then call [gio.output_stream.OutputStream.writevAllFinish] to get the result of the operation.

This is the asynchronous version of [gio.output_stream.OutputStream.writevAll].

Call [gio.output_stream.OutputStream.writevAllFinish] to collect the result.

Any outstanding I/O request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is [glib.types.PRIORITY_DEFAULT].

Note that no copy of vectors will be made, so it must stay valid until callback is called. The content of the individual elements of vectors might be changed by this function.

Parameters

`vectors`	the buffer containing the #GOutputVectors to write.
`ioPriority`	the I/O priority of the request
`cancellable`	optional #GCancellable object, null to ignore
`callback`	a #GAsyncReadyCallback to call when the request is satisfied