JPH0659928A - Array data display system by debugger - Google Patents

Abstract

PURPOSE:To improve the debugging efficiency of a program for storing much numerical operation in a large array and processing it by displaying an element having an array value larger than a previously specified threshold on a display as a black element. CONSTITUTION:A symbol table reading part 4 reads out a symbol table included in an object program 12. An address conversion part 5 converts an array name and an element value in the symbol table into a memory address. A memory access part 6 reads out the memory value of the specified address. A dot display part 7 displays the values of respective elements in an array specified by a command on a display 9 as the set of dots. When the values of respective elements are larger than the previously specified threshold, the display part 7 displays these elements on the display 9 as black dots. Thereby a user can roughly know which elements include meaningful values in array data.

Description

Detailed Description of the Invention

[0001]

This invention relates to a program debugging method in an information processing system, and particularly to analysis of a program having a large amount of data array.

[0002]

2. Description of the Related Art Conventionally, the following debugging method is known when the operation of a program having a large amount of data array is not as intended.

(1) A method of inserting a depagu line for displaying sequence data in a target program and executing the program again.

(2) A method of stopping the operation of the program on the way by the debugger and referring to the array data value by the command of the debugger.

[0005]

In the conventional method described above, the conventional method (1) of inserting a debug line in a program which has the following problems has a large data array to be referred to. However, there is an advantage that the data to be displayed can be selected to some extent by the logic in the debug line, but the problem is that the maintenance work of the program becomes complicated each time you want to change the data to be displayed. was there.

In the conventional method (2) of interrupting the operation of the program by the debugger and referring to the value of the array data by the command of the debugger, the user modifies the program to specify the command of the debugger and refer to the data. Although there is an advantage that no work is required, when the data array to be displayed is large, the user specifies and displays the data array, so when displaying many data at once, There is a problem that the efficiency of the work is deteriorated because the debug command has to be input to.

An object of the present invention is to efficiently input the contents of a large amount of data array without changing the program logic when a program having a large amount of data array is debugged and the user can easily input a command to the debugger. It is to provide a method that enables good access.

[0008]

The array data display method by the debugger of the present invention comprises a keyboard and a pointing device as an input device for instructing the operation of the debugger, and a bitmap display device as an output device for displaying the response of the debugger. In a computer system, a command input section that receives commands, a symbol table reading section that reads the symbol table that exists in the object program, an address conversion section that converts the memory address based on the array name and element value, and a specified address It consists of a memory access unit for reading the memory value, a dot display unit for displaying array values as a set of dots on the display, and a main control unit for controlling these.

In the second aspect of the present invention, the dot display section has a function of collectively displaying a plurality of dots as one dot.

The third aspect of the present invention has an array data display section for displaying data by selecting dots displayed by the dot display section with a pointing device.

[0011]

The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a data display system by the debugger of the present invention.

In FIG. 1, reference numeral 1 is an array data display method by the debugger of the present invention, and 2 is a main control unit for controlling the operation of each unit of the present invention by commands. A keyboard 10 is used by the user to give commands to the array data display method 1 by the debugger of the present invention. Reference numeral 11 is a pointing device which gives commands similarly to the keyboard 10. A display device 9 displays a debugger response. 3 is a command input section for receiving commands from the keyboard 10 and the pointing device 11, 4
Is a symbol table reading unit that extracts information of symbols included in the program from the object program 12, and 5 is an address conversion unit that converts at which address on the memory the symbol name input by the command input unit 3 exists. 6 is a memory access unit for reading the contents of the specified memory address from the memory 13, 7 is the value of each element of the array specified by the command is made to correspond to each dot on the display, Is large, the dot display section displays the contents of the array as a set of dots on the display in black, and in the second aspect of the present invention, the dot display section 7 displays the values of a plurality of adjacent array elements as one dot. Has a function to display collectively.

Numeral 8 is included in the third aspect of the present invention, and the value of the array element at the portion where the dot set displayed on the display 9 in the dot display section 7 is selected by the pointing device 11 is used as the actual value instead of the dot. It is a data display unit which is edited and displayed on the display 9.

Next, the relationship between the array and the dots when the dot display section 7 displays on the display 9 will be described with reference to FIG.

In FIG. 2, 2-1 is an image displayed on the display, and 2-2 is a table showing the values of the data array to be displayed.

In the table of 2-2, the data array A (10,10
The value of 0) is 25, and the value of A (11,101) is 45.
Is shown. In the array data display method by the debugger of the present invention, the data array shown in 2-2 is displayed depending on whether the dots shown in 2-1 are blackened by the threshold value specified by the user. It is also possible to reverse the vertical axis when displaying. Further, in the first aspect of the present invention, four adjacent array elements can be examined by a threshold value and it can be decided whether or not to make black as a whole. The number of adjacent array elements to be selected can be changed by the specification of the user.

In the third aspect of the present invention, the dot pattern displayed at 2-1 can be designated as an area by a pointing device, and individual array element numbers and their values can be examined.

[0019]

As described above, the present invention not only allows the user to refer to the large-scale array data included in the program as individual element numbers and values when debugging the user program, but also to Since it is expressed as a collection, the user can easily check the array to see which element of the array data contains a meaningful value, and specify the area and refer to the actual value. Therefore, there is an effect that a program that stores and processes a large number of numerical operations in a large-scale array can be efficiently debugged.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention

[Figure 2] Relationship between dot display and array data

[Explanation of symbols]

 1 Array data display method by debugger 2 Main control unit 3 Address conversion unit 4 Symbol table reading unit 5 Address conversion unit 6 Memory access unit 7 Dot display unit 8 Data display unit 9 Display 10 Keyboard 11 Pointing device 12 Object program 13 Memory

Claims (3)

[Claims] 1. A display method of a debugger for displaying and changing the content of data included in a program created by a user, comprising a keyboard and a pointing device as an input device for instructing the operation of the debugger, and displaying the response of the debugger. In a computer system equipped with a bitmap display device as an output device for displaying, a command input section for receiving a command input by a user from a keyboard or a pintinge device, and a symbol table for reading a symbol table existing in an object program. 1 unit on the display for reading, a memory access unit for reading the memory value of the specified address and an address conversion unit for converting the memory address based on the array name and element value obtained by the command input unit Corresponding to the dot, Therefore, the array data display by the debugger that consists of a dot display unit that displays the values of the array as a set of dots on the display by displaying the elements that have a value greater than the specified threshold in black, and the main control unit that controls these method 2. An array data display method by a debugger, wherein the dot display unit has a function of displaying a plurality of dots collectively as one dot, and can display a distribution of values of more array elements on a display. 3. An array data display unit by a debugger having a data display unit for displaying the actual array element number and value by selecting the dot displayed by the dot display unit with a pointing device.