Module: Kernel

Defined in:
lib/neverblock/core/system/system.rb

Instance Method Summary collapse

Instance Method Details

#backticks(cmd, *args) ⇒ Object 



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# File 'lib/neverblock/core/system/system.rb', line 28

def backticks(cmd, *args)
  myargs = "#{cmd} "
  myargs << args.join(' ') if args
  res = ''    
  IO.popen(myargs) do |f|
    res << f.read
  end
  res
end

#rb_sleep ⇒ Object 



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# File 'lib/neverblock/core/system/system.rb', line 6

alias_method :rb_sleep, :sleep

#rb_system ⇒ Object 



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# File 'lib/neverblock/core/system/system.rb', line 13

alias_method :rb_system, :system

#sleep(time = nil) ⇒ Object 



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# File 'lib/neverblock/core/system/system.rb', line 8

def sleep(time=nil)
  return rb_sleep(time) unless NB.neverblocking?
  NB.sleep(time)
end

#system(cmd, *args) ⇒ Object 



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# File 'lib/neverblock/core/system/system.rb', line 15

def system(cmd, *args)
  return rb_system(cmd, *args) unless NB.neverblocking?
  begin
    backticks(cmd, *args)
    result = $?.exitstatus
    return true if result.zero?
    return nil if result == 127
    return false
  rescue Errno::ENOENT => e
    return nil
  end
end