module Listen::Adapter

Constants

OPTIMIZED_ADAPTERS
POLLING_FALLBACK_MESSAGE

Public Class Methods

select(options = {}) click to toggle source
# File lib/listen/adapter.rb, line 14
def self.select(options = {})
  _log :debug, 'Adapter: considering polling ...'
  return Polling if options[:force_polling]
  _log :debug, 'Adapter: considering optimized backend...'
  return _usable_adapter_class if _usable_adapter_class
  _log :debug, 'Adapter: falling back to polling...'
  _warn_polling_fallback(options)
  Polling
rescue
  _log :warn, format('Adapter: failed: %s:%s', $ERROR_POSITION.inspect,
                     $ERROR_POSITION * "\n")
  raise
end

Private Class Methods

_log(type, message) click to toggle source
# File lib/listen/adapter.rb, line 39
def self._log(type, message)
  Listen::Logger.send(type, message)
end
_usable_adapter_class() click to toggle source
# File lib/listen/adapter.rb, line 30
def self._usable_adapter_class
  OPTIMIZED_ADAPTERS.detect(&:usable?)
end
_warn_polling_fallback(options) click to toggle source
# File lib/listen/adapter.rb, line 34
def self._warn_polling_fallback(options)
  msg = options.fetch(:polling_fallback_message, POLLING_FALLBACK_MESSAGE)
  Kernel.warn "[Listen warning]:\n  #{msg}" if msg
end