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require 'active_support/concurrency/share_lock'
module ActiveSupport
module Dependencies #:nodoc:
class Interlock
def initialize
@lock = ActiveSupport::Concurrency::ShareLock.new(true)
end
def loading
@lock.exclusive do
yield
end
end
def start_running
@lock.start_sharing
end
def done_running
@lock.stop_sharing
end
def running
@lock.sharing do
yield
end
end
# Match the Mutex API, so we can be used by Rack::Lock
alias :lock :start_running
alias :unlock :done_running
end
end
end
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