Like Core.Weak_hashtbl, but automatically collects keys with unused data, rather than requiring user code to call remove_keys_with_unused_data.
include module type of Core.Weak_hashtbltype ('a, 'b) t = ('a, 'b) Core.Weak_hashtbl.tval sexp_of_t :
('a -> Ppx_sexp_conv_lib.Sexp.t) ->
('b -> Ppx_sexp_conv_lib.Sexp.t) ->
('a, 'b) t ->
Ppx_sexp_conv_lib.Sexp.tval create :
?growth_allowed:bool ->
?size:int ->
(module Core_kernel.Hashtbl.Key_plain with type t = 'a) ->
('a, 'b) tgrowth_allowed and size are both optionally passed on to the underlying call to Hashtbl.create.
module Using_hashable = Core.Weak_hashtbl.Using_hashableval mem : ('a, _) t -> 'a -> boolval find : ('a, 'b) t -> 'a -> 'b Core_kernel.Heap_block.t optionval find_or_add :
('a, 'b) t ->
'a ->
default:(unit -> 'b Core_kernel.Heap_block.t) ->
'b Core_kernel.Heap_block.tval remove : ('a, 'b) t -> 'a -> unitval add_exn : ('a, 'b) t -> key:'a -> data:'b Core_kernel.Heap_block.t -> unitval replace : ('a, 'b) t -> key:'a -> data:'b Core_kernel.Heap_block.t -> unitval key_is_using_space : ('a, _) t -> 'a -> boolkey_is_using_space t key returns true if key is using some space in t. mem t
key implies key_is_using_space t key, but it is also possible that that key_is_using_space t key && not (mem t key).
val reclaim_space_for_keys_with_unused_data : (_, _) t -> unitreclaim_space_for_keys_with_unused_data t reclaims space for all keys in t whose data has been detected (by a finalizer) to be unused. Only keys such that key_is_using_space t key && not (mem t key) will be reclaimed.