zynthian_engine.py 文件源码

def start(self, start_queue=False, shell=False):
        if not self.proc:
            logging.info("Starting Engine " + self.name)
            try:
                self.start_loading()
                self.proc=Popen(self.command,shell=shell,bufsize=1,universal_newlines=True,
                    stdin=PIPE,stdout=PIPE,stderr=STDOUT,env=self.command_env)
                    #, preexec_fn=os.setsid
                    #, preexec_fn=self.chuser()
                if start_queue:
                    self.queue=Queue()
                    self.thread_queue=Thread(target=self.proc_enqueue_output, args=())
                    self.thread_queue.daemon = True # thread dies with the program
                    self.thread_queue.start()
                    self.proc_get_lines(2)
            except Exception as err:
                logging.error("Can't start engine %s => %s" % (self.name,err))
            self.stop_loading()