module Bixby::Signal
Public Class Methods
trap(*signals, &block)
click to toggle source
Helper for trapping signals and handling them via a dedicated thread
@param [String] *signals Signals to trap either as a space-separate string or array @param [Block] block Callback when signal is trapped
@return [Thread]
# File lib/bixby-common/util/signal.rb, line 11 def self.trap(*signals, &block) sigs = signals.flatten.map{ |s| s.split(/[\s,]/) }.flatten.sort.uniq trap_r, trap_w = IO.pipe # handle signals from a dedicated thread handler_thread = Thread.new do while true sig = trap_r.readline.strip Thread.new do block.call(sig) end end end sigs.each do |sig| Kernel.trap(sig) do if handler_thread && handler_thread.alive? then # don't bother writing if the thread is dead trap_w.puts(sig) end end end return handler_thread end