OutputStream.writeAllAsync

void writeAllAsync(ubyte[]  buffer,  int  ioPriority,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

Request an asynchronous write of count bytes from buffer into the stream. When the operation is finished callback will be called. You can then call [gio.output_stream.OutputStream.writeAllFinish] to get the result of the operation.

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

Call [gio.output_stream.OutputStream.writeAllFinish] 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 buffer will be made, so it must stay valid until callback is called.

Parameters

`buffer`	the buffer containing the data to write
`ioPriority`	the io priority of the request
`cancellable`	optional #GCancellable object, null to ignore
`callback`	a #GAsyncReadyCallback to call when the request is satisfied