| 摘要 |
A debugger for debugging, from a central location (e.g., a user terminal 13), jobs or processes running on one or more remote units (11) connected to the user terminal (13) via a communication network (15). The user terminal (13) includes a debugger (21) that receives and interprets debug commands produced by a keyboard and display console (19). The debug commands fall in any one of three categories-debug commands directed to the user terminal (USER TERMINAL CONTROL commands); debug commands directed to a particular remote unit (REMOTE UNIT CONTROL commands); and, debug commands directed to a specific job or process of multiple jobs or processes running on a particular remote unit (LOCAL JOB/PROCESS commands). The USER TERMINAL CONTROL commands are executed at the user terminal (13). The REMOTE UNIT CONTROL commands and LOCAL JOB/PROCESS commands are transmitted to the remote units (11) via the communication network (15). Each of the remote units (11) include a remote unit debugger (23) and a local job/process debugger (25) for each job or process subject to debug control. The remote unit debuggers (23) and the local process debuggers (25) receive and carry out the REMOTE UNIT CONTROL commands and the LOCAL JOB/PROCESS commands, respectively. The remote unit and local job/process debuggers send ACKNOWLEDGE or NEGATIVE-ACKNOWLEDGE messages to the user terminal debugger (21) after a debug operation is executed, depending upon whether the execution was successful or unsuccessful. If successful, data accompanying the ACKNOWLEDGE message is displayed at the user terminal. Contrariwise, a NEGATIVE-ACKNOWLEDGE message creates a suitable error display at the user terminal. Further, the local job/process debuggers (25) can send a message to the user terminal debugger (21) in situations where an error is recognized during the operation of a job or process or where a job or process is to be debugged prior to being placed in operation. Such local job/process messages cause the identity of the sending job/process debugger to be added to a debug control data base maintained in the user terminal and the message to be displayed for subsequent action by the user.
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