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require 'concurrent/constants'
require 'concurrent/utility/monotonic_time'
require 'concurrent/channel/tick'
require 'concurrent/channel/buffer/base'
module Concurrent
class Channel
module Buffer
class Timer < Base
def put(item)
false
end
def offer(item)
false
end
def take
loop do
tick, _ = do_poll
if tick
return tick
else
Thread.pass
end
end
end
def next
loop do
tick, more = do_poll
return tick, more if tick
Thread.pass
end
end
def poll
tick, _ = do_poll
tick = Concurrent::NULL unless tick
tick
end
private
def ns_initialize(delay)
@tick = Concurrent.monotonic_time + delay.to_f
self.capacity = 1
end
def ns_size
0
end
def ns_empty?
false
end
def ns_full?
true
end
def do_poll
synchronize do
if ns_closed?
return Concurrent::NULL, false
elsif Concurrent.monotonic_time >= @tick
# only one listener gets notified
self.closed = true
return Concurrent::Channel::Tick.new(@tick), false
else
return nil, true
end
end
end
end
end
end
end
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