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#--
# This file is part of Sonic Pi: http://sonic-pi.net
# Full project source: https://github.com/samaaron/sonic-pi
# License: https://github.com/samaaron/sonic-pi/blob/master/LICENSE.md
#
# Copyright 2013, 2014, 2015, 2016 by Sam Aaron (http://sam.aaron.name).
# All rights reserved.
#
# Permission is granted for use, copying, modification, and
# distribution of modified versions of this work as long as this
# notice is included.
#++
require 'set'
require_relative "promise"
module SonicPi
class SynthTracker
def initialize
@synths = Set.new
@mut = Mutex.new
@prom = nil
end
def synth_started(s)
@mut.synchronize do
@synths << s
end
end
def synth_finished(s)
@mut.synchronize do
@synths.delete s
if @prom && @synths.empty?
@prom.deliver! true, false
end
end
end
def block_until_finished
@mut.synchronize do
@prom = Promise.new
if @synths.empty?
@prom.deliver! true, false
end
end
@prom.get
end
# To be treated like a promise
def get
block_until_finished
end
def to_s
"<SynthTracker prom:#{@prom}, synths:#{synths.inspect}>"
end
end
end
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