package irmin-pack

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Irmin backend which stores values in a pack file

Install

Dune Dependency

github.com Readme Changelog ISC License Edit opam file Versions (44)

Authors

T

Thomas Gazagnaire

Maintainers

T

thomas@gazagnaire.org

Sources

irmin-3.1.0.tbz

sha256=d84fa343a841f663969ed6b08e5fc1b704d3ab7974858aa29471fe291a6a2f86

sha512=ab5eb4bd08ab69b97c8b9a72181c5b59d3d515e4ba63550d8a4551ec8ea72cd2d3b302fe0812379553e52891f81a9ae5d4d668382155d9c6c6eb75844a48477e

doc/irmin-pack.unix/Irmin_pack_unix/Pack_store/Maker/argument-1-Index/index.html

Parameter `Maker.Index`

include Index.S
  with type value = Optint.Int63.t * int * Irmin_pack.Pack_value.Kind.t

type t

The type for indexes.

type key

The type for keys.

type value = Optint.Int63.t * int * Irmin_pack.Pack_value.Kind.t

The type for values.

type cache

The type for caches of index instances.

val empty_cache : unit -> cache

Construct a new empty cache of index instances.

val clear : t -> unit

clear t clears t so that there are no more bindings in it.

val mem : t -> key -> bool

mem t k is true iff k is bound in t.

val replace : ?overcommit:bool -> t -> key -> value -> unit

replace t k v binds k to v in t, replacing any existing binding of k.

If overcommit is true, the operation does not triger a merge, even if the caches are full. By default overcommit is false.

val filter : t -> ((key * value) -> bool) -> unit

filter t p removes all the bindings (k, v) that do not satisfy p. This operation is costly and blocking.

val iter : (key -> value -> unit) -> t -> unit

Iterates over the index bindings. Limitations:

Order is not specified.
In case of recent replacements of existing values (since the last merge), this will hit both the new and old bindings.
May not observe recent concurrent updates to the index by other processes.

val flush : ?no_callback:unit -> ?with_fsync:bool -> t -> unit

Flushes all internal buffers of the IO instances.

Passing ~no_callback:() disables calling the flush_callback passed to v.
If with_fsync is true, this also flushes the OS caches for each IO instance.

val sync : t -> unit

sync t syncs a read-only index with the files on disk. Raises RW_not_allowed if called by a read-write index.

val is_merging : t -> bool

is_merging t returns true if t is running a merge. Raises RO_not_allowed if called by a read-only index.

val try_merge : t -> unit

try_merge is like merge but is a no-op if the number of entries in the write-ahead log is smaller than log_size.

module Checks : sig ... end

Offline fsck-like utility for checking the integrity of Index stores built using this module.

val v : 
  ?flush_callback:(unit -> unit) ->
  ?fresh:bool ->
  ?readonly:bool ->
  ?throttle:[ `Block_writes | `Overcommit_memory ] ->
  ?lru_size:int ->
  log_size:int ->
  string ->
  t

Constructor for indices, memoized by (path, readonly) pairs.

val find : t -> key -> value option

val add : ?overcommit:bool -> t -> key -> value -> unit

val close : t -> unit

val merge : t -> unit

module Stats = Index.Stats