JezK
Edit File: synchronized_delegator.rb
require 'delegate' require 'monitor' # This class provides a trivial way to synchronize all calls to a given object # by wrapping it with a `Delegator` that performs `Monitor#enter/exit` calls # around the delegated `#send`. Example: # # array = [] # not thread-safe on many impls # array = SynchronizedDelegator.new([]) # thread-safe # # A simple `Monitor` provides a very coarse-grained way to synchronize a given # object, in that it will cause synchronization for methods that have no need # for it, but this is a trivial way to get thread-safety where none may exist # currently on some implementations. # # This class is currently being considered for inclusion into stdlib, via # https://bugs.ruby-lang.org/issues/8556 class SynchronizedDelegator < SimpleDelegator def setup @old_abort = Thread.abort_on_exception Thread.abort_on_exception = true end def teardown Thread.abort_on_exception = @old_abort end def initialize(obj) __setobj__(obj) @monitor = Monitor.new end def method_missing(method, *args, &block) monitor = @monitor begin monitor.enter super ensure monitor.exit end end end unless defined?(SynchronizedDelegator)