JPS63289656A - Program processor - Google Patents

Abstract

PURPOSE:To support the formation work or study of a program by simulating an execution process so as to be easily understand it simultaneously with the formation of an object code interpreter a program function. CONSTITUTION:An interpreter device 2 reads out one line of a source program from a program storage device 3 to form an object program. When the program is not ended, a unit object 71 instructed by one message of the formed object program is started. The object 71 executes specified operation processing in accordance with the instruction of the message. Display selecting information 83 in the object 71 is inspected, and when a display state is selected, simulation information for interpreting a unit operating state formed based on the display information 82 is displayed on a display device 5. Since the execution state is simulated based on the object program, the execution state of the program can be monitored.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a program processing device that reads a source program and generates a predetermined object program, and particularly relates to a program processing device that reads a source program and generates a predetermined object program. The present invention relates to a program processing device with an added function of monitoring the execution status of a computer program based on the following.

(Prior Art) Conventionally, methods for supporting debugging and learning of programs include inserting trace information into source programs and using debugging tools such as inkblitter simulators. However, the former method requires complicated work to insert special information into the program, and the latter method requires special debugging means. Moreover, since these methods output simulation information from the interpreter for each source program operation, for example, if an unexpected error occurs during execution, it may be permanently lost within one source program operation. If a situation such as falling into a loop occurs,
No response can be obtained from the interpreter device at all. In such a situation, it becomes impossible to determine whether the current state is a wait state for execution completion or a runaway state due to an error, and there is a problem in that it takes time and effort to discover the error.

(Problems to be Solved by the Invention) As described above, the conventional method of displaying the program execution status requires special information and debugging tools to monitor the program execution status. There is a problem in that when a computer falls into an endless loop within one operation of a source program, it becomes difficult to detect an error.

The present invention was made in consideration of such a situation.
The purpose is to provide a program processing device that can easily grasp the execution status of a program while it is being executed without adding special information to the program or using a debugging tool.

[Configuration of the Invention (Means for Solving Problems) A program processing device according to the present invention is provided with a source program that drives a system consisting of a plurality of units, and generates an object program from this source program. means for generating the operational status of each unit obtained by executing the object program generated by this means, and generating only the operational status of the specified unit at the operational level of the object program. and display means.

(Operation) According to the present invention, a means for displaying the execution status of an object program is added to the program processing device that generates an object program from a source program, so that it is possible to add special information to the program. ,The execution status of a program can be constantly ,monitored while the program is being executed without using ,special depacking and tools. Furthermore, according to the present invention, since the program execution status is displayed at the object program operation level, fatal program errors such as endless loops can be discovered during execution. Therefore, appropriate measures such as interrupting program execution can be taken.

Furthermore, according to the present invention, by selecting the unit whose execution status needs to be monitored from among the units involved in the program, it is possible to display only the status of the selected unit, so more information than necessary is displayed. This allows you to focus on the operation of a specific unit, improving work efficiency.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an interpreter-type program processing device according to an embodiment.

A control device 1 is in charge of controlling the entire device.

The interpreter device 2, under the control of the control device 1, stores a program storage device 3 that stores a source program.
Reads a source program from and generates an object program. The unit object management device 4 manages information about all the computer units involved in the program, is started by the object program generated by the interpreter device 2, performs program execution processing, and also manages the object code from the interpreter device 2. Information for displaying a simulation of the program execution process based on the information is output to the display device 5. The display device 5 displays a simulation of the execution state based on information from the unit/object management device 4.

FIG. 2 is a diagram for explaining the object program and unit object management device 4 in further detail. Object given from interpreter device 2
Each message string 61 constituting the program 6 is an activation unit command for each unit object 71 of the unit object management device 4 (aggregation of unit objects). For example, for the unit “memory”, “ALLOCA” (assign variable A), “
LOAD B” (takes out the value of variable B), “SET
X 1'' (set the value of the variable It consists of operation information 81 that holds information (code) for displaying the operation status, display information 82 that holds information (code in executable format) for displaying the operation status, and display selection information 83 that selects display/non-display status of the operation status. For example, the unit object 71 corresponding to "unit 0 memory" has operation information about how to perform operations in response to ALLOC, LOAD, SET commands, etc. that define the operations of "memory". When one operation is completed, the operation information 81 starts executing the next display information, and this process is repeated alternately. Further, the display information includes display processing information such as the unit display format and each operation display format. Furthermore, the display selection information 83 is a flag that can be freely rewritten from the outside even during program execution.

The operation of the program processing device configured as described above will be explained below.

FIG. 3 shows a schematic flow of program processing method control. First, the interpreter device 2 reads one line of the source program from the program storage device 3 and generates an object program (step A). If the program has not finished (step B), the unit object 71 indicated by one message of the generated object program is activated (step C). The unit object 71 performs the specified operation process according to the message instruction (step D). Next, the display selection information 83 in the unit object 71 is checked, and if the display state is selected (step E), simulation information explaining the operating state of the unit generated based on the display information 82 is transmitted to the display device. 5
(Step F).

FIG. 4 is a display example of a program processing device that executes a BASIC program. The schematic diagram displayed here shows a computer unit, in which 21 is a program storage device, 22 is an interpreter device, 23 is an arithmetic unit, and 24 is a computer unit.
25 represents an output device, 25 represents an input device, 26 represents a memory, and 33 represents a program counter. This schematic diagram is a simulation when the program storage device 3 stores a BASIC program of 10 INPUT A 20 INPUT B 30 LET C-A+B 40 PRINT C 50 END and the 30th line is currently being executed. It is a diagram. A state diagram such as FIG. 32 showing the structure of the BASIC program 27, the sentence 28 currently being processed, the arithmetic expression 29, and the allocation of variable names 30 and their values 31 allocated to the memory are displayed.

How the operating state of each unit changes as the program is executed can be monitored using the above simulation diagram.

FIG. 4(a) shows that when the display selection information 83 of all unit objects 71 is set to "1", that is, the display state is selected for all units, FIG. 4(b) shows that the program storage device 21, This is a display example when the display state is selected only for the program counter 33 and memory 26 units. In this way, in FIG. 4(b), it is possible to focus on a specific unit and monitor its operating state.

As described above, according to the apparatus of this embodiment, the internal state of a computer can be simulated during program execution without using special information or special debugging tools for the program. Since the execution state is simulated based on the object program in this way, a runaway state within one operation of the source program can be easily discovered.

In addition, in this embodiment, the object contention program is composed of a message string that activates unit objects, and each unit object has operation information and display information. You can choose whether or not to display the simulation. Moreover, there is no need to specify the unit display selection in advance; for example, if a specific unit enters repeated processing while processing is in progress, the display designation of this unit can be canceled midway through. It is also possible to speed up the execution time.

In addition, a schematic diagram for displaying simulation results (
The display format shown in FIG. 4) is not particularly limited to the embodiment described above. Furthermore, the language used is also BAS I.
It is possible to apply not only to C but also other languages such as LISP and PASCAL. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] As explained above, according to the present invention, it is possible to generate the object code of a program, simultaneously display a simulation of the execution process in an easy-to-understand manner, and explain the program functions. It can greatly support creation work and learning.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a program processing device according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of an object program and a unit object management device in the same device, and FIG. 3 is a block diagram showing the configuration of a program processing device in the same device. FIG. 4 is a flowchart for explaining the operation of the system. 1...control device, 2...interpreter device, 3...
- Program storage device, 4... Unit conflict object management device, 5... Display device, 6... Message string, 61... Message, 71... Unit object, 81... Operation information, 82...display information, 8
3990 display selection information. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2

Claims (3)

[Claims] (1) Given a source program that drives a system consisting of multiple units, a means to generate an object program from this source program, and a method for each unit obtained by executing the object program generated by this means. A program processing device comprising means for generating an operating status for each unit and displaying only the operating status of a designated unit at the operating level of the object program. (2) The displaying means holds operation information indicating the operation status of each unit involved in program execution, display information for graphically representing the operation status, and display selection information specifying whether to display or not. 2. The program processing apparatus according to claim 1, further comprising a set of unit objects for activating each unit object, and wherein said object program is composed of a message sequence for activating each of said unit objects. (3) The program processing apparatus according to claim 1, wherein the displaying means accepts designation/cancellation of the unit to be displayed during execution of the object program.