Linux SRV-16 6.18.44-paas #1 SMP PREEMPT_DYNAMIC Thu Aug 13 10:08:12 UTC 2026 x86_64

/proc/thread-self/root/opt/ruby-2.7/usr/lib/ruby/gems/2.7.0/gems/rack-2.2.3/lib/rack/

//proc/thread-self/root/opt/ruby-2.7/usr/lib/ruby/gems/2.7.0/gems/rack-2.2.3/lib/rack/lock.rb

 # frozen_string_literal: true

require 'thread'

module Rack
  # Rack::Lock locks every request inside a mutex, so that every request
  # will effectively be executed synchronously.
  class Lock
    def initialize(app, mutex = Mutex.new)
      @app, @mutex = app, mutex
    end

    def call(env)
      @mutex.lock
      @env = env
      @old_rack_multithread = env[RACK_MULTITHREAD]
      begin
        response = @app.call(env.merge!(RACK_MULTITHREAD => false))
        returned = response << BodyProxy.new(response.pop) { unlock }
      ensure
        unlock unless returned
      end
    end

    private

    def unlock
      @mutex.unlock
      @env[RACK_MULTITHREAD] = @old_rack_multithread
    end
  end
end