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module Rack
# Rack::Lock was commited to Rack core
# http://github.com/rack/rack/commit/7409b0c
# Remove this when Rack 1.0 is released
unless defined? Lock
class Lock
FLAG = 'rack.multithread'.freeze
def initialize(app, lock = Mutex.new)
@app, @lock = app, lock
end
def call(env)
old, env[FLAG] = env[FLAG], false
@lock.synchronize { @app.call(env) }
ensure
env[FLAG] = old
end
end
end
end
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