Module: Timeout

Defined in:
lib/convenient_service/debug/timeout.rb

Class Method Summary collapse

Class Method Details

.timeout(sec, klass = nil, message = nil) ⇒ Object

:yield: +sec+

Raises:

  • (e) 


23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
# File 'lib/convenient_service/debug/timeout.rb', line 23

def timeout(sec, klass = nil, message = nil)   #:yield: +sec+
  return yield(sec) if sec == nil or sec.zero?
  message ||= "execution expired".freeze
  from = "from #{caller_locations(1, 1)[0]}" if $DEBUG
  e = Error
  bl = proc do |exception|
    begin
      x = Thread.current
      y = Thread.start {
        puts "[ConvenientService][Timeout]: Start timeout thread `#{Thread.current.object_id}`."

        Thread.current.name = from
        begin
          sleep sec
        rescue => e
          puts "[ConvenientService][Timeout]: End timeout thread `#{Thread.current.object_id}` by rescue."

          x.raise e
        else
          puts "[ConvenientService][Timeout]: End timeout thread `#{Thread.current.object_id}` by else."

          x.raise exception, message
        end
      }
      return yield(sec)
    ensure
      if y
        puts "[ConvenientService][Timeout]: End timeout thread `#{y.object_id}` by kill."

        y.kill
        y.join # make sure y is dead.
      end
    end
  end
  if klass
    begin
      bl.call(klass)
    rescue klass => e
      bt = e.backtrace
    end
  else
    bt = Error.catch(message, &bl)
  end
  level = -caller(CALLER_OFFSET).size-2
  while THIS_FILE =~ bt[level]
    bt.delete_at(level)
  end
  raise(e, message, bt)
end