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1ecadc3952
In UML if any process dies while test-runner is waiting for the DBus service or some socket to be available it will block forever. This is due to the way the non_block_wait works. Its not optimal but it essentially polls over some input function until the conditions are met. And, depending on the input function, this can cause UML to hang since it never has a chance to go idle and advance the time clock. This can be fixed, at least for services/sockets, by sleeping in the input function allowing time to pass. This will then allow test-runner to bail out with an exception. This patch adds a new wait_for_service function which handles this automatically, and wait_for_socket was refactored to behave similarly.