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rails--rails/activesupport/lib/active_support/dependencies/interlock.rb

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require 'active_support/concurrency/share_lock'
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module ActiveSupport #:nodoc:
module Dependencies #:nodoc:
class Interlock
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def initialize # :nodoc:
@lock = ActiveSupport::Concurrency::ShareLock.new
end
def loading
@lock.exclusive(purpose: :load, compatible: [:load], after_compatible: [:load]) do
yield
end
end
def unloading
@lock.exclusive(purpose: :unload, compatible: [:load, :unload], after_compatible: [:load, :unload]) do
yield
end
end
def start_unloading
@lock.start_exclusive(purpose: :unload, compatible: [:load, :unload])
end
def done_unloading
@lock.stop_exclusive(compatible: [:load, :unload])
end
def start_running
@lock.start_sharing
end
def done_running
@lock.stop_sharing
end
def running
@lock.sharing do
yield
end
end
def permit_concurrent_loads
@lock.yield_shares(compatible: [:load]) do
yield
end
end
def raw_state(&block) # :nodoc:
@lock.raw_state(&block)
end
end
end
end