If the restart flag is set to True ( the default), then an interrupt to the routine caused from some UNIX signal will cause a restart of the routine. 如果restart标志设置为True(默认设置),那么在某些UNIX信号造成中断时,会重新启动例程。
Restart Routine the Active Method for Real-Time Microcomputer System 微机实时系统抗干扰的有效措施&程序重新启动措施