JPH0328935A - Process execution control system - Google Patents

Abstract

PURPOSE:To prevent such a case where the process carried out by a higher rank process task is invalidated by a lower rank process task by discontinuing the process of a 1st task with the end of the process of 2nd task when the 1st task executing a process interrupts the process due to the execution of the 2nd task of a higher level. CONSTITUTION:A task control part 1 which controls the task of a process program consists of a task state control part 10 which performs the overall control of a task, a task state changing part 11 which changes the task state with an instruction of the part 10, an inter-task communication control part 12 which controls and executes the inter-task communication, and a task control request accepting part 13 which accepts the request given to the produced process for the task control. Then the process of a 1st task 2 is discontinued with the end of the process of a 2nd task 3 if the process carried out by the task 2 is interrupted owing to the execution of the task 3 having a higher level than the task 2. Thus, justice of the task operation is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an RA having multiple operation levels that manages the state of an information processing device and performs various operations on the information processing device.
This paper relates to a control method for a processing program of an S processor, and in particular to a processing execution management method that allows tasks to operate normally by enabling control between tasks with different operation levels. [Prior Art] Conventionally, in a processor with multiple levels, when a task being executed at a lower level is interrupted by an information processing device, etc., and a processing task that needs to be executed at a higher level occurs, the lower task is placed in a wait state. The system did not return to the state and was forced to wait until the higher-level task finished, and then resumed processing when the higher-level processing task finished executing. [Problem to be solved by the invention] As a result, if a low-level processing task and a high-level processing task are tasks that handle the same information processing equipment, the processing performed by the high-level task is invalidated by the low-level processing task. There was a problem that it became digitized. An object of the present invention is to solve the above problem by managing the processing within the task itself so that the processing performed by a higher-level processing task is not invalidated by a lower-level processing task. [Means for Solving the Problems] According to the present invention, there is provided a RAS processor that has a plurality of information processing devices and a plurality of processing levels that manage the states of the information processing devices, and that changes the processing operation level depending on the content to be processed. In the process execution management method, if the first task currently executing the process has been interrupted due to the execution of the second task at a higher level, the second task A process execution management method is obtained that is characterized by canceling the process. [Example] The present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of an apparatus for realizing the present invention. Reference numeral 1 denotes a task control unit that controls tasks of a processing program running on the RAS processor, a task state management unit 10 that manages the entire task, and a task state change unit that changes the state of a task according to instructions from the task state management unit. 11, an inter-task communication control unit 12 that controls and implements communication between tasks, and a task control request reception unit 13 that accepts requests such as requesting task control for processing that has occurred. 2 is a processing task A that occurs to the information processing device, and 3 is a processing task B that occurs to the same information processing device.

Figure 2 (A). (B) and (C> are flowcharts explaining the operation of the present invention. For example, it is assumed that the RAS processor has eight processing levels. There are levels O to 7, and level O It is assumed that level 7 is the highest processing level and level 7 is the lowest processing level.Now, assume that a processing program (hereinafter referred to as a task) A that executes processing on an information processing device is generated by process 100.This task It is assumed that A is a fifth level process.Processing task A requests the task control unit 1 to register a task.

The task control request reception unit 13 of the task control unit 1 performs processing 10.
1, the validity of the request is confirmed and a task registration request is issued to the task state management unit 10. Task status management section 1
0 identifies the content of the request in process 102 and instructs the task state change unit 11 to register a new task. The task state change unit 11 registers the task for the requested process in step 103, and then registers the task in the task state management unit I.
Return control to O. At this time, the task state change unit 11 identifies which processing device the requested task is to manage, and also registers the processing device in an internal task control table (not shown). Then, the task state management unit 10 instructs the requesting task A to execute in process 104. Then, task A starts processing in process 105. When the registration is completed, the task control unit 1 notifies the processing task A of the completion of processing, and the processing task A
starts working. At this time, task B must be executed with priority over task A from the information processing device that is the control target of task A.
If there is a notification due to an interrupt or the like that prompts the activation of task A, processing at the second level, which has a higher priority than the fifth level at which task A is currently being executed, is executed in step 106.

In this case, task A is not subject to task control due to processing 106 because it is a fifth-level process, and execution appears to have been temporarily stopped.

Task B, like task A, performs task registration processing with the task control unit and starts processing.

If a situation occurs during this process in which all control of the information processing apparatus must be interrupted, a request is made to the task control unit 1 to suspend control of the target information processing apparatus in process 108.

The task control request reception unit 13 confirms the validity of the request in step 109 and notifies the task state control unit 10 of the validity of the request.

The task state control unit 10 that has received the notification requests the task state change unit 11 to change the state of the task corresponding to the request to a suspended state through process 110. The task state change unit l1 changes the corresponding task to the requested state through process 111 and returns control to the task state management unit 10. The task state management unit 10 issues a communication data set request to the intertask communication control unit 12 in process 112.

Upon receiving the request, the inter-task communication control unit 13 sets the communication data to the corresponding task through process 113.

When all of this processing is completed, control is returned to task B. When task B completes the processing in step 114, it requests the task control unit l to delete the task and ends its own processing. Here, the fifth level processing, which has been suspended due to the lack of second level processing, is started again by processing 115. Then, when the task control unit 1 is again requested to change the state of the task, the task control request receiving unit 13 performs processing 11.
6, the validity of the request is confirmed again and control is passed to the task state management unit 10. A process 117 of the task state management unit 10 detects that there is an instruction to interrupt task A, and takes a procedure to erase the process of task A.
Issue an abort instruction to task A. In task A,
The process 118 recognizes that there is an instruction to cancel and cancels the process. In this way, by enabling control communication between tasks, processing can be exchanged between tasks even if the operating levels are different, and conflicts in updating the table that holds the status of the information processing device can be prevented. It is possible. [Effects of the Invention] As explained above, the present invention makes it possible to stop the processing even if separate processing tasks that perform processing on the same information processing device are operating at different operation levels. The correctness of the operation can be guaranteed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of an apparatus for implementing the present invention, and FIG. 2(A). (B) and (C) are flowcharts explaining the operation of the present invention. DESCRIPTION OF SYMBOLS 1... Task control unit, 2... Task A, 3... Task B, 10... Task state management unit, 11... Task state change unit, 12... Inter-task communication control unit, 13.
...Task control request reception unit.

Claims (1)

[Claims] In a processing execution management method for a RAS processor that has a plurality of information processing devices and a plurality of processing levels that manage the states of the information processing devices and changes the processing operation level depending on the content to be processed, a first task during processing execution. A process execution management method characterized in that, if the process has been interrupted due to the execution of a second task at a higher level, the process of the second task is stopped upon completion of the process of the first task.