InputStream.readAllAsync

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

Request an asynchronous read of count bytes from the stream into the buffer starting at buffer.

This is the asynchronous equivalent of gio.input_stream.InputStream.readAll.

Call gio.input_stream.InputStream.readAllFinish 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.

Parameters

`buffer`	a buffer to read data into (which should be at least count bytes long)
`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