Request an asynchronous read of count bytes from the stream into a
new #GBytes. When the operation is finished callback will be
called. You can then call gio.input_stream.InputStream.readBytesFinish to get the
result of the operation.
During an async request no other sync and async calls are allowed
on stream, and will result in gio.types.IOErrorEnum.Pending errors.
On success, the new #GBytes will be passed to the callback. It is
not an error if this is smaller than the requested size, as it can
happen e.g. near the end of a file, but generally we try to read as
many bytes as requested. Zero is returned on end of file (or if
count is zero), but never otherwise.
Any outstanding I/O request with higher priority (lower numerical
value) will be executed before an outstanding request with lower
priority. Default priority is G_PRIORITY_DEFAULT.
Request an asynchronous read of count bytes from the stream into a new #GBytes. When the operation is finished callback will be called. You can then call gio.input_stream.InputStream.readBytesFinish to get the result of the operation.
During an async request no other sync and async calls are allowed on stream, and will result in gio.types.IOErrorEnum.Pending errors.
A value of count larger than G_MAXSSIZE will cause a gio.types.IOErrorEnum.InvalidArgument error.
On success, the new #GBytes will be passed to the callback. It is not an error if this is smaller than the requested size, as it can happen e.g. near the end of a file, but generally we try to read as many bytes as requested. Zero is returned on end of file (or if count is zero), but never otherwise.
Any outstanding I/O request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is G_PRIORITY_DEFAULT.