Class: Distem::Events::EventManager

Inherits:

Object

• Object
• Distem::Events::EventManager

show all

Defined in:

lib/distem/events/eventmanager.rb

Instance Attribute Summary (collapse)

• - (Object) event_trace readonly

  Event trace.

Instance Method Summary (collapse)

• - (EventManager) initialize(trace = nil) constructor

  A new instance of EventManager.

• - (Object) run
• - (Object) set_trace(trace)
• - (Object) stop

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# File 'lib/distem/events/eventmanager.rb', line 10

def initialize(trace = nil)
  @event_trace = trace
  @running_thread = nil
end

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# File 'lib/distem/events/eventmanager.rb', line 8

def event_trace
  @event_trace
end

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# File 'lib/distem/events/eventmanager.rb', line 20

def run

  raise "No event trace is set" unless @event_trace
  raise "The event manager is already started!" if (@running_thread and @running_thread.alive?)

  event = nil
  date = 0

  runblock = Proc.new {
    init_time = Time.now

    begin
      event.trigger(@event_trace, date) if event
      date, event = @event_trace.pop_next_event
      if date
        sleep_time = init_time + date - Time.now
        sleep sleep_time if sleep_time > 0
      end
    end while event
  }

  @running_thread = Thread.new {
    runblock.call
  }

end

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# File 'lib/distem/events/eventmanager.rb', line 15

def set_trace(trace)
  @running_thread.exit if @running_thread
  @event_trace = trace
end

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# File 'lib/distem/events/eventmanager.rb', line 47

def stop
  @running_thread.exit if @running_thread
  @running_thread = nil
  @event_trace.clear
end