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module Concurrent
module Synchronization
# @!visibility private
# @!macro internal_implementation_note
class RbxLockableObject < AbstractLockableObject
safe_initialization!
def initialize(*defaults)
super(*defaults)
@__Waiters__ = []
@__owner__ = nil
end
protected
def synchronize(&block)
if @__owner__ == Thread.current
yield
else
result = nil
Rubinius.synchronize(self) do
begin
@__owner__ = Thread.current
result = yield
ensure
@__owner__ = nil
end
end
result
end
end
def ns_wait(timeout = nil)
wchan = Rubinius::Channel.new
begin
@__Waiters__.push wchan
Rubinius.unlock(self)
signaled = wchan.receive_timeout timeout
ensure
Rubinius.lock(self)
if !signaled && !@__Waiters__.delete(wchan)
# we timed out, but got signaled afterwards,
# so pass that signal on to the next waiter
@__Waiters__.shift << true unless @__Waiters__.empty?
end
end
self
end
def ns_signal
@__Waiters__.shift << true unless @__Waiters__.empty?
self
end
def ns_broadcast
@__Waiters__.shift << true until @__Waiters__.empty?
self
end
end
end
end
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