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Contents
module Concurrent
module Synchronization
# @!macro synchronization_object
# @!visibility private
class AbstractObject
# @abstract has to be implemented based on Ruby runtime
def initialize
raise NotImplementedError
end
# @!macro [attach] synchronization_object_method_ensure_ivar_visibility
#
# Allows to construct immutable objects where all fields are visible after initialization, not requiring
# further synchronization on access.
# @example
# class AClass
# attr_reader :val
# def initialize(val)
# @val = val # final value, after assignment it's not changed (just convention, not enforced)
# ensure_ivar_visibility!
# # now it can be shared as Java's final field
# end
# end
# @!visibility private
def ensure_ivar_visibility!
# We have to prevent ivar writes to reordered with storing of the final instance reference
# Therefore wee need a fullFence to prevent reordering in both directions.
full_memory_barrier
end
protected
# @!visibility private
# @abstract
def full_memory_barrier
raise NotImplementedError
end
# @!macro [attach] synchronization_object_method_self_attr_volatile
#
# creates methods for reading and writing to a instance variable with volatile (Java semantic) instance variable
# return [Array<Symbol>] names of defined method names
def self.attr_volatile(*names)
raise NotImplementedError
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems