1 Merkle Patricia tree storage
2 Types
type t = {storage : Storage.t;hashcons : Hashcons.t;node_cache : Index.t Node_cache.t;stat : Stat.t;hash : Hash.Hasher.t;keep_hash : bool;bytes_per_cell : int;with_count : bool;offsets : Node_offsets.t;}val default_config : configBuild the config. Do not call it in busy loops since it allocates a record
val pp_config : Stdlib.Format.formatter -> config -> unitval config_name : config -> stringShort string to identify configs
val memory_only : ?hashcons:Hashcons.config -> ?keep_hash:bool -> config -> tCreate a memory_only context.
Commiting nodes of a memory only context fails.
val is_memory_only : t -> boolval create :
?hashcons:Hashcons.config ->
?node_cache:Index.t Node_cache.t ->
?resize_step_bytes:int ->
?keep_hash:bool ->
config ->
key:Storage.writer_key ->
string ->
t Lwt.tCreate a new context storage. Note that if the file already exists, create fails.
The context is created in Writer mode.
length: initial size of the file in bytes
val open_existing_for_read :
?hashcons:Hashcons.config ->
?node_cache:Index.t Node_cache.t ->
?keep_hash:bool ->
config ->
string ->
(t, Error.t) Stdlib.result Lwt.tOpen an existing context storage.
val open_for_write :
?hashcons:Hashcons.config ->
?node_cache:Index.t Node_cache.t ->
?resize_step_bytes:int ->
?keep_hash:bool ->
config ->
key:Storage.writer_key ->
string ->
t Lwt.tOpen an existing context storage.
val close : t -> unit Lwt.tCloses the context.
If program exits or crashes without closing a context, some data may be lost, even if they are written on the disk.
val mode : t -> Storage.modeReturns writing mode
val shrink_node_cache : t -> unitShrink the node cache
val pp_cache_for_debug : Stdlib.Format.formatter -> t -> unitIt runs Obj.reachable_words which takes long time. Do not use in production.