Module: IO::Event::Support

Defined in:
lib/io/event/support.rb

Class Method Summary collapse

Class Method Details

.buffer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/io/event/support.rb', line 9

def self.buffer?
  IO.const_defined?(:Buffer)
end

.fiber_scheduler_v1? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/io/event/support.rb', line 13

def self.fiber_scheduler_v1?
  IO.const_defined?(:Buffer) and !Fiber.respond_to?(:blocking)
end

.fiber_scheduler_v2? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/io/event/support.rb', line 17

def self.fiber_scheduler_v2?
  IO.const_defined?(:Buffer) and Fiber.respond_to?(:blocking) and IO::Buffer.instance_method(:read).arity == -1
end

.fiber_scheduler_v3? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/io/event/support.rb', line 21

def self.fiber_scheduler_v3?
  if fiber_scheduler_v2?
    return true if RUBY_VERSION >= "3.3"
    
    # Feature detection if required:
    begin
      IO::Buffer.new.slice(0, 0).write(STDOUT)
      return true
    rescue
      return false
    end
  end
end