Method: Thread::Every#initialize

Defined in:
lib/thread/every.rb

#initialize(every, &block) ⇒ Every

Create an every with the given seconds and block.

Raises:

  • (ArgumentError) 


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# File 'lib/thread/every.rb', line 21

def initialize (every, &block)
  raise ArgumentError, 'no block given' unless block

  @every  = every
  @old    = true
  @mutex  = Mutex.new
  @thread = Thread.new {
    loop do
      begin
        value = block.call

        @mutex.synchronize {
          @at        = Time.now
          @value     = value
          @old       = false
          @exception = nil
        }
      rescue Restart
        next
      rescue Exception => e
        @mutex.synchronize {
          @at        = Time.now
          @exception = e
        }

        break if e.is_a? Cancel
      end

      cond.broadcast if cond?

      begin
        sleep @every
      rescue Restart
        next
      rescue Cancel => e
        @mutex.synchronize {
          @at        = Time.now
          @exception = e
        }

        break
      end
    end
  }

  ObjectSpace.define_finalizer self, self.class.finalizer(@thread)
end