Class: LightIO::Core::Backend::NIO

Inherits:
Object
  • Object
show all
Defined in:
lib/lightio/core/backend/nio.rb

Overview

LightIO use NIO as default event-driving backend

Instance Method Summary collapse

Constructor Details

#initialize ⇒ NIO

Returns a new instance of NIO.



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# File 'lib/lightio/core/backend/nio.rb', line 52

def initialize
  # @selector = NIO::Selector.new
  @current_loop_time = nil
  @running = false
  @timers = Timers.new
  @callbacks = []
  @selector = ::NIO::Selector.new(env_backend)
end

Instance Method Details

#add_callback(&blk) ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 73

def add_callback(&blk)
  @callbacks << blk
end

#add_io_wait(io, interests, &blk) ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 85

def add_io_wait(io, interests, &blk)
  monitor = @selector.register(io, interests)
  monitor.value = blk
  monitor
end

#add_timer(timer) ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 77

def add_timer(timer)
  timer.uuid = @timers.add_timer(timer)
end

#backend ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 101

def backend
  @selector.backend
end

#cancel_io_wait(io) ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 91

def cancel_io_wait(io)
  @selector.deregister(io)
end

#cancel_timer(timer) ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 81

def cancel_timer(timer)
  @timers.cancel_timer(timer)
end

#env_backend ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 105

def env_backend
  key = 'LIGHTIO_BACKEND'.freeze
  ENV.has_key?(key) ? ENV[key].to_sym : nil
end

#run ⇒ Object

Raises:



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# File 'lib/lightio/core/backend/nio.rb', line 61

def run
  raise Error, "already running" if @running
  @running = true
  loop do
    @current_loop_time = Time.now
    run_timers
    run_callbacks
    handle_selectables
  end
end

#stop ⇒ Object 



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# File 'lib/lightio/core/backend/nio.rb', line 95

def stop
  return unless @running
  @running = false
  raise
end