JPH02213953A - Error monitor device - Google Patents

Abstract

PURPOSE:To reduce the influence of the error occurring at a working task to other normal tasks sharing a console by interrupting the picture information given to a frame memory when the error occurs and securing a virtual terminal display area and a system console display area in a display area of the frame memory. CONSTITUTION:If a task 2 has an error, the picture information given to a frame memory is interrupted. Then a system console display area (page 1) 9 and a virtual terminal display area (page 2) 10 are secured in a display area of the frame memory. Thus it is possible to minimize the information displayed on a system console in a case a certain task has an error and the solution of the error factor and the after-process of an operator are required even in such a computer system that does not contain a console to show the task error in addition to the system console in the system. Then the influence of the faulty task can be reduced to other tasks sharing a console.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention manages the execution of a plurality of tasks, and provides image information related to the execution management of this task to a frame memory to output it to an output device. An error monitor device that is capable of displaying the error occurrence status of a task in a device that is equipped with an operating system that outputs the output and does not have a console that exclusively displays error occurrence information when an error occurs in the task being executed. Regarding.

(Prior Art) Conventionally, as an example of a computer system, in an operating system that executes and manages multiple tasks (multitasking environment), a special system is used to exclusively display error information when an error occurs in a task being executed. Some do not have a console. Conventionally, in such computer systems, when an error occurs in a specific task, information such as the details of the error in the task, the module in which it occurred, and the address is displayed on the system console of that system, and the operator is prompted to take action. The system automatically determines whether to ask for error status, or to continue processing the task or cancel the task depending on the severity of the error situation in the task.

(Problem to be Solved by the Invention) However, when the above-mentioned conventional computer system is used in a multitasking environment, the system console is shared with normal tasks other than those in which an error has occurred; Since task operation messages and the like are displayed at the same time, there is a limit to the amount of information that can be displayed as an error, and the displayed content may scroll up over time and eventually disappear from the display screen. In addition, there is a risk of manual operation errors when the displayed content is mixed with other operation messages, making it difficult to read, and when inputting data using an input device for post-processing of a task in which an error has occurred. Contains.

The present invention minimizes the information displayed on the system console when an error occurs in a certain task being executed in a multitasking environment, and when it is necessary to clarify the cause of the error and perform post-processing by the operator. The impact on other normal tasks shared by the system console can be reduced, information is saved regardless of the passage of time, and post-processing of error-occurring tasks can be prevented from being incorrectly performed due to operational errors, etc. The purpose of the present invention is to provide an error monitor device that enables the following.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention manages the execution of a plurality of tasks, and provides image information related to the execution management of the tasks to a frame memory for output. In an apparatus equipped with an operating system that outputs output to a device, when the operating system 1 detects that an error has occurred during the execution of the task, control is passed from the operating system that detected the error or the task that is the source of the error. an error monitor means for outputting summary information of error occurrence and detailed information of error occurrence; virtual terminal management means for securing a display area for a virtual terminal and a display area for a system console in a display area of a frame memory; and a display area for a virtual terminal and a display area for a system console when error occurrence information is output from the error monitor means. and driver means for outputting summary information on the occurrence of an error in a task and detailed information on the occurrence of an error to the output device, respectively, in the display area for each task.

(Operation) According to the present invention, when an error occurs in a task being executed, image information provided to the frame memory is interrupted, and a display area for a virtual terminal and a display area for a system console are respectively secured in the display area of the frame memory. Now, when an error occurs in a certain task, and it is necessary to determine the cause of the error and perform post-processing by the operator, it is possible to minimize the information output to the system console and share the console. This can reduce the impact on other normal tasks that you are doing. In addition, more detailed error information can be output to the virtual terminal display area, allowing error analysis and post-processing. At this time, the key human power is also switched to the virtual terminal display area, so you can avoid erroneous operations. Less risk, safer and more efficient error monitoring.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a computer system equipped with an error monitor device according to the present invention.
The operating system 1 manages the execution of a plurality of tasks (task (1), task (2), ... task (n)) 2, and stores image information related to the execution management of the task 2 in a virtual terminal described later. It is applied to the frame memory in the management module 5, displayed on an actual input/output device such as the image display 3, and further detects that an error has occurred in the task 2 being executed and outputs an error occurrence detection signal. . When an error occurs in a certain task 2 out of a plurality of tasks 2 executed and managed by the operating system 1, the error monitor module (error monitor means) 4 detects the error in the operating system 1 that detected the error or the task 2 that is the source of the error. Control is passed from itself (in the membrane, this is done by interrupt processing by software), and summary information on error occurrence in the task and detailed information on error occurrence are sent to the virtual terminal management described below via the operating system 1. It is output to the module (virtual terminal management means) 5. Virtual terminal management module (virtual terminal management means) 5
is for managing the console as a system console and/or a virtual terminal, and has a frame memory, which is provided with image information related to the execution management of the task 2, and is for managing the console as a system console and/or a virtual terminal. When all tasks are executed normally, it is normally managed as a system console, and when error occurrence information from the error monitor module 4 is input via the operating system 1, interrupting the image information given to the frame memory, A display area for a virtual terminal and a display area for a system console are respectively secured in the display area of the frame memory. The display driver 6 is for driving the display 3 under the virtual terminal management module 5.

Further, the keyboard input card driver is for driving an actual input/output device such as the keyboard 8 of the virtual terminal management module 5.

FIG. 2 shows a device installed in the virtual terminal management module 5,
It also indicates a display memory area of the frame memory that stores image information to be given to the display 3, and is a display area for the system console (page 1) that is secured when color generation information is input from the error monitor module 4. 9 and a virtual terminal display area (page 2) 10.

Next, the operation of the embodiment of the error monitor device according to the present invention will be described with reference to flowcharts shown in FIGS. 3, 4, and 5, respectively.

FIG. 3 is a flowchart showing the operation of the error monitor module 4. When an error is discovered in a certain task 2 among the plurality of tasks 2, the operating system 1 generates an error occurrence detection signal and detects it. Control is passed from the operating system 1 or the task 2 itself to the error monitor module 4, where error occurrence information is output. In this way, when error occurrence information is output from the error monitor module 4, task 2 is displayed in the system console display area (PAGE 1) of the frame memory in the virtual terminal management module 5.
(step 31), and outputs more detailed information about the error occurrence of task 2 to the virtual terminal display area (PAGE2) of the frame memory in the virtual terminal management module 5 (step 32). )
. After that, it is determined whether the error in Task 2 is serious and requires some kind of operation by the operator, or whether it is better to include input data from the operator for error analysis. It is determined whether to output it (step 33).

If it is determined in step 33 that the error occurrence information is not to be output as is from the error monitor module 4, the process waits for input data from the virtual terminal (-step 35), and the subsequent processing of task 2 is interrupted. Then, when some key input is performed from the virtual terminal, the error monitor module 4 performs the following according to this input data.
Perform various monitoring functions (step 36). If the input data from the keyboard 8 is a command to output the error occurrence information of the error monitor module 4, the process returns to step 33, where the error monitor process is completed, and control is transferred to the error task 2. is returned (step 34).

In step 33, when it is determined that the error is not serious and that task 2 should continue processing, that is, the error monitor module 4 is bypassed and the processing of the user task is continued. In step 33, if new input is requested, the process returns to step 35 and waits for input data from the virtual terminal.

FIG. 4 is a flowchart showing the operation of the virtual terminal management module 5 when requesting display output.

In this case, the error monitor module 4 is called from the operating system 1 based on an output request to the console or virtual terminal. When control is passed to the virtual terminal management module 5, it is first determined whether the display output request is for a console or a virtual terminal (step 41). If the display output request is for the console, display output data is set in the console display area (PAGEI) (step 42), and it is determined whether the current display mode is console display output (step 43); If it is a console display output, the display driver 6 is driven and actual display is performed on the display 3 (step 44). Further, in step 43, if the current display mode is a display state on the virtual terminal side, the output data is only set in the display memory area, but no actual display is performed. In step 41, control is passed from the operating system 1 to the virtual terminal management module 5, and in the case of a display output request to the virtual terminal, output data is set in the virtual terminal display area (PAGE2) (
Step 45), it is determined whether the current display mode is virtual terminal output (Step 46). If the current display mode is virtual terminal output, drive the display display driver 6 and display the actual display 3.
is displayed (step 47). In step 46, if the current display mode is console display, the output data is only set in the display area and no actual display is performed.

FIG. 5 is a flowchart showing the operation of the virtual terminal management module 5 when the keys are manually operated. In this case, control is passed to the virtual terminal management module 5 by a key interrupt from the keyboard 8.

When control is passed to the virtual terminal management module 5, it is checked whether the input data is from a single terminal switching sequence (step 48), but this terminal switching sequence usually involves a combination of keys (e.g. :CNTL,AL
T, SYS REQ keys are pressed at the same time). If it is determined in step 48 that a terminal switching sequence has been input, the display mode flag managed by the virtual terminal management module 5 is changed and the display mode is switched (step 49).
, outputs the data in the new display memory area via the display driver 6 (step 50). In step 48, if the key input data is other than the terminal switching sequence, the current display mode is checked to determine whether it is the console display mode (step 51), and if it is the console display mode, it is stored in the console input queue. Set the input data (step 52), and if the virtual terminal mode is selected in step 51, set the input data in the virtual terminal input queue (step 5).
3). In this way, input data that is passed to task 2, which issues input requests on the console and virtual terminal, respectively, and that is input by keystrokes depending on the display mode of display 3, can be correctly distributed to input on the console or virtual terminal.

According to the embodiment described above, when an error occurs in task 2, the image information given to the frame memory is interrupted,
Since the system console display area (page 1) and the virtual terminal display area (page 2) are secured in the frame memory display area, it is possible to display task errors in the system separately from the system console. Even on computer systems that do not have a console, if an error occurs in a task and the cause needs to be determined and the operator needs to take corrective action, the information displayed on the system console should be kept to a minimum and the console The impact on other shared tasks can be reduced. In addition, more detailed error information can be output to the virtual terminal display area, allowing the operator to analyze the error and perform post-processing by switching the console display mode at an appropriate time. Switching to the virtual terminal display area reduces the risk of erroneous operations and provides a safer and more efficient error monitoring function.

[Effects of the Invention] According to the present invention described above, when an error occurs in a task being performed in a multitasking environment, when the cause of the error occurrence needs to be clarified and the operator needs to perform post-processing, the system console The information displayed above can be kept to a minimum and the impact on other normal tasks shared by the system console can be reduced, and the information is saved regardless of the passage of time, so that it can be used after a task that causes an error due to an operational error, etc. It is possible to provide an error monitor device that can prevent erroneous processing.

[Brief explanation of the drawing]

FIG. 1 is a flowchart for explaining the operation of an embodiment of the error monitor device according to the block invention, showing a schematic configuration of a computer system equipped with the error monitor device of the present invention. 1... Operating system, 2... Task,
3... Display, 4... Error monitor module, 5... Virtual terminal management module, 6... Display display driver, 7... Keyboard input driver, 8... Keyboard. Applicant's agent Patent attorney Takehiko Suzue #I 2 Figure

Claims (1)

[Scope of Claims] An operating system that executes and manages a plurality of tasks and provides image information related to the execution management of the tasks to a frame memory and outputs it to an output device, wherein an error occurs during the execution of the tasks. When the operating system 1 detects that the error has occurred, control is passed from the operating system that detected the error or the task of the error occurrence source, and an error monitor that outputs summary information about the error occurrence and detailed information about the error occurrence. means, when error occurrence information is output from the error monitor means, interrupts image information provided from the operating system to the frame memory, and displays a virtual terminal display area and a system console display area in the display area of the frame memory; When error occurrence information is output from the virtual terminal management means to be secured and the error monitor means, summary information of the error occurrence of the task and details of the error occurrence are displayed in the virtual terminal display area and the system console display area, respectively. an error monitor device comprising: driver means for outputting information to the output device;