sig
type bgreader
val create :
Mapred_fs.filesystem ->
string -> int64 -> int64 -> int -> Mapred_io_bgreader.bgreader
val extend : Mapred_io_bgreader.bgreader -> int64 -> unit
val read : Mapred_io_bgreader.bgreader -> int
val buffer : Mapred_io_bgreader.bgreader -> Netsys_mem.memory
val buffer_block : Mapred_io_bgreader.bgreader -> int64
val buffer_len : Mapred_io_bgreader.bgreader -> int
val close : Mapred_io_bgreader.bgreader -> unit
end
