Module: Jack::Tasks::Locking

Included in:
Jack::Tasks
Defined in:
lib/jack/tasks/locking.rb

Instance Method Summary collapse

Instance Method Details

#lock(*args) ⇒ Object 



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# File 'lib/jack/tasks/locking.rb', line 4

def lock(*args)
  require 'lockfile' unless Object.const_defined?(:Lockfile)
  options = args.last.is_a?(Hash) ? args.pop : {:retries => 0}
  lock_filename = args.shift || 'jack.lock'
  if block_given?
    lockfile = ::Lockfile.new(lock_filename, options)
    begin
      lockfile.lock
      yield
    ensure
      lockfile.unlock if lockfile.locked?
    end
  end
end