Class: Farce::Local::TreeMap

Inherits:
Abstract::TreeMap show all
Includes:
Shareable::Tracked
Defined in:
lib/farce/local/tree_map.rb

Overview

A shareable tree map with independent mutable storage in each scope.

Instance Attribute Summary

Attributes included from Scoped

#scope

Instance Method Summary collapse

Methods included from Shareable

#ractor_shareable?

Methods inherited from Abstract::TreeMap

#[], #[]=, #clear, #compare_keys_by_identity?, #compare_values_by_identity?, #delete, #each, #each_key, #each_value, #empty?, #fetch, #first_key, #getkey, #key?, #keys, #last_key, #length, #pop, #shareable_keys?, #shift, #size, #store_if_absent, #values

Methods included from Abstract::DuplicableMap

#compact, #compact_blank, #deep_dup, #duplicable?, #except, #flatten, #invert, #merge, #reject, #reverse_merge, #select, #slice, #stringify_keys, #symbolize_keys, #to_proc, #transform_keys, #transform_values, #with_indifferent_access

Methods inherited from Abstract::Map

#[], #[]=, #as_extended_json, #as_json, #assert_valid_keys, #assoc, #bson_type, #clear, #compare_by_identity?, #compare_keys_by_identity?, #compare_values_by_identity?, #deconstruct_keys, #delete, #dig, #each, #each_key, #each_pair, #each_value, #empty?, #fetch, #fetch_values, #getkey, #has_key?, #key, #key?, #keys, #length, #rassoc, #shareable_keys?, #shareable_values?, #size, #store, #store_if_absent, #to_a, #to_bson, #to_bson_normalized_value, #to_cbor, #to_h, #to_hash, #to_json, #to_msgpack, #to_query, #to_s, #value?, #values_at, #weak_keys?, #weak_values?

Constructor Details

#initialize(entries = nil, scope: :ractor) ⇒ TreeMap

Valid scopes are:

  • :ractor - The value is shared by all threads within the same Ractor.
  • :thread_group - The value is shared by all threads within the same thread group.
  • :thread - The value is shared by all fibers within the same thread.
  • :fiber_storage - The value is shared by all fibers using the same storage. Unless explicitly specified, storage is inherited from the parent fiber for blocking fibers, but not for non-blocking fibers (such as those created by Scheduler#schedule).
  • :fiber - Each fiber has its own independent value.

Parameters:

  • entries (Hash, Farce::Abstract::Map, #each, #to_hash, nil) (defaults to: nil) —

    the entries to store initially

  • scope (Symbol) (defaults to: :ractor) —

    the scope of the tree map



14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/farce/local/tree_map.rb', line 14

class TreeMap < Abstract::TreeMap
  include Shareable::Tracked
  include Scoped::Tracked

  State = Data.define(:map, :key_locks)
  private_constant :State

  protected

  def internal_map = scoped_value.map
  def transaction_key_locks = scoped_value.key_locks

  private

  def freeze_scoped_value(state) = state.map.freeze

  def new_copied_scoped_value(map)
    State.new(map, Internal::OrderedKeyLockMap.new)
  end

  def with_key_lock(key, &) = scoped_value.key_locks.synchronize(key, &)

  def new_scoped_value(entries = nil, **)
    unless Internal::KeyNormalizer.canonical_entries?(entries)
      return State.new(Internal::TreeMap.new(entries, **), Internal::OrderedKeyLockMap.new)
    end

    map = Internal::TreeMap.new(nil, **)
    entries.each { map[_1] = _2 }
    State.new(map, Internal::OrderedKeyLockMap.new)
  end
end