JezK

Edit File: lock.rb

#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2010-2025 Asynchronous B.V.
#
#  "Passenger", "Phusion Passenger" and "Union Station" are registered
#  trademarks of Asynchronous B.V.
#
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#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
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#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
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#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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module PhusionPassenger
  module Utils

class Lock
      def initialize(mutex)
        @mutex = mutex
        @locked = false
      end

def reset(mutex, lock_now = true)
        unlock if @locked
        @mutex = mutex
        lock if lock_now
      end

def synchronize
        lock if !@locked
        begin
          yield(self)
        ensure
          unlock if @locked
        end
      end

def lock
        raise if @locked
        @mutex.lock
        @locked = true
      end

def unlock
        raise if !@locked
        @mutex.unlock
        @locked = false
      end
    end

end # module Utils
end # module PhusionPassenger