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require 'thread'
# This thread inspects directories
module Scheduler
extend self
UPDATE_SIGNAL = 31
PRIORITY = -1
def reset()
@scheduled = []
@active = false
@thread ||= Thread.new do
## I have two ways of doing this. the first is somewhat better
## but leads to problems with ncurses:
## sometimes if you close the terminal window by clicking on
## the X or pressing alt+F4 or in any other way that the window
## manager provides, it will not properly exit and keep running
## in the background, using up 100% CPU.
if Option.evil
Thread.current.priority = PRIORITY
while true
Thread.stop
manage unless @scheduled.empty? or !@active
end
else
while true
sleep 0.1
manage unless @scheduled.empty? or !@active
end
end
end
end
def run
@active = true
end
def stop
@active = false
end
def <<(dir)
dir.scheduled = true
unless @scheduled.include? dir
@scheduled << dir
end
@thread.run if Option.evil
end
private
def manage
while dir = @scheduled.shift
dir.refresh(true)
dir.resize
end
force_update
end
def force_update
Process.kill( UPDATE_SIGNAL, Process.pid )
end
end
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