Thread 2 in Listing 2 is for taking multiple snapshots over the period without issuing the reset monitorcommand after the initial reset monitorcommand.
清单2中的线程2用于在整个时间段内拍摄多个快照，在初始复位监控器命令之后没有发出复位监控器命令。
2
A special program called a trigger monitor receives the trigger message from the queue manager, reads the process definition, and then runs the command line task specified there.
It is much more convenient during the testing phase to run the trigger monitor as a foreground process because all of the diagnostic messages will be visible in the command session window.