Module Dn_store
module Dn_store:sig..end
The directory containing the store. There are two files:
- config: first line contains the identity string. Second line contains the block size
- data: one big file with the data blocks
class type dn_store_config =object..end
val init_store : dn_store_config -> string -> int64 -> unitinit_dn_store config identity size:
Initializes the store. The directory must already exist. The files
config and data must not exist.type
val open_store : dn_store_config -> dn_store
Opens the store
val close_store : dn_store -> unit
Closes the store
val get_identity : dn_store -> string
Returns the identity string
val get_blocksize : dn_store -> int
Returns the block size
val get_size : dn_store -> int64
Returns the number of blocks
val read_block : dn_store -> int64 -> int -> Netsys_mem.memory -> int -> int -> unitread_block st block blockpos mem mpos len: Reads the bytes
blockpos to blockpos+len-1 from block into the range
mpos to mpos+len-1 of mem.val write_block : dn_store -> int64 -> Netsys_mem.memory -> int -> unitwrite_block st block blockpos mem mpos: Writes a complete block out.
The block data are in mem from byte position mpos to
mpos+blocksize-1. The data is written into block.val will_read_block : dn_store -> int64 -> unitwill_read_block st block: announces that this block will be read
in the near futureval sync : dn_store -> unit
Syncs the store to disk
