package irmin-pack

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in-package search v0.2.0

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-3.2.1.tbz

sha256=9cfb7291a7d90ca0e55ece33040ad41e74cadd8c6446e04c33558bc1a1951518

sha512=9605acd77de9aae70ae96554a28594e6ed5beba70a48145c0fc2204b32bb23b843ba98cf034e88391581d5f3495154195c644d64a3aa3f8d3994a9c5518c5cda

doc/irmin-pack.unix/Irmin_pack_unix/Index/Make/index.html

Module `Index.Make`Source

Parameters

module K : Irmin.Hash.S

Signature

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

Sourcetype t

The type for indexes.

Sourcetype key = K.t

The type for keys.

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

The type for values.

Sourcetype cache

The type for caches of index instances.

Sourceval empty_cache : unit -> cache

Construct a new empty cache of index instances.

Sourceval clear : t -> unit

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

Sourceval mem : t -> key -> bool

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

Sourceval 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.

Sourceval 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.

Sourceval 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.

Sourceval 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.

Sourceval 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.

Sourceval 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.

Sourceval 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.

Sourcemodule Checks : sig ... end

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

Source

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.

Sourceval find : t -> key -> value option

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

Sourceval close : t -> unit

Sourceval merge : t -> unit

Sourcemodule Stats = Index.Stats

Sourcemodule Key : Index.Key.S with type t = key

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Parameters
Signature