# File lib/phusion_passenger/rack/out_of_band_gc.rb, line 46 def call(env) status, headers, body = @app.call(env) case @strategy when :counting @mutex.synchronize do @request_count += 1 if @request_count == @frequency @request_count = 0 headers['X-Passenger-Request-OOB-Work'] = 'true' end end when :gctools_oobgc if GC::OOB.dry_run headers['X-Passenger-Request-OOB-Work'] = 'true' end else raise "Unrecognized Out-Of-Band GC strategy #{@strategy.inspect}" end [status, headers, body] end