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require 'concurrent/synchronization'
require 'concurrent/utility/monotonic_time'
module Concurrent
class Channel
# A convenience class representing a single moment in monotonic time.
# Returned by {Concurrent::Channel} tickers and timers when they
# resolve.
#
# Includes `Comparable` and can be compared to monotonic_time, UTC
# time, or epoch time.
#
# @see Concurrent.monotonic_time
# @see Concurrent::Channel.ticker
# @see Concurrent::Channel.timer
class Tick < Synchronization::Object
include Comparable
safe_initialization!
STRING_FORMAT = '%F %T.%6N %z %Z'.freeze
attr_reader :monotonic, :utc
def initialize(tick = Concurrent.monotonic_time)
@monotonic = tick
@utc = monotonic_to_utc(tick).freeze
end
def epoch
@utc.to_f
end
def to_s
@utc.strftime(STRING_FORMAT)
end
def <=>(other)
if other.is_a? Numeric
@monotonic <=> other
elsif other.is_a? Time
@utc <=> other.utc
elsif other.is_a? Tick
@monotonic <=> other.monotonic
else
nil
end
end
private
def monotonic_to_utc(tick)
Time.now.utc + Concurrent.monotonic_time - tick
end
end
end
end
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