JPH04316140A - Program tracing device - Google Patents

Abstract

PURPOSE:To efficiently perform program tracing work. CONSTITUTION:An identifying name for identifying trace data 4 to be traced is registered on a identifying name registering table 5. The identifying names on the table 5 can be registered by means of an identifying name registering means 7 and canceled by means of an identifying name canceling means 8. On the other hand, a trace presence/absence discriminating means 12 discriminate the necessity of tracing the trace data 4 by referring to the table 5 at the moment a trace instruction detecting means 11 detects a trace instruction 3 in a program 1 to be traced. As a results, only trace data which are discriminated to be traced by the means 12 are stored in a trace buffer 6. Of the trace data stored in the buffer 6, in addition, those selected by their identifying names only are displayed on a trace data displaying means 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program tracing device for tracing the execution process of a program.

0002

2. Description of the Related Art In conventional computers, the following method is generally used to trace data from the execution process of a program. That is, a trace function was provided as one of the functions of the OS (control program). Specifically, a trace processing means consisting of a trace macro instruction for tracing data, and a display means for displaying the trace data were provided. Then, trace macro instructions are embedded in the traced program, and trace data specified by all trace macro instructions is stored in a trace buffer when the traced program is executed. After that, all trace data in the trace buffer was displayed.

0003

[Problems to be Solved by the Invention] However, the above-mentioned conventional technology has the following problems. That is, conventionally, all trace data was displayed, so when analyzing trace data, it took time to find and analyze only relevant trace data. The present invention has been made focusing on the above points,
It is an object of the present invention to provide a program tracing device that can also display only related trace data in order to facilitate analysis of trace data.

0004

[Means for Solving the Problems] A first aspect of the program tracing device of the present invention includes an identification name registration table for registering an identification name for identifying trace data to be traced, and a Identification name registration means for registering the identification name, identification name cancellation means for canceling the identification name registered in the identification name registration table, and trace instruction detection means for detecting a trace instruction written in the traced program. a trace presence/absence determination means that refers to the identification name registration table and determines whether or not tracing is necessary for the trace data; The present invention is characterized by providing trace data storage means for storing trace data determined to be necessary for tracing in a trace buffer, and trace data display means for displaying the trace data in the trace buffer.

A second aspect of the program tracing device of the present invention provides a trace buffer for storing trace data, a trace instruction detecting means for detecting a trace instruction written in a traced program, and a trace instruction detecting means for detecting a trace instruction written in a traced program. The present invention is characterized by comprising trace data storage means for storing the trace data in the trace buffer at the time of detection of a trace command, and trace data display means for displaying trace data selected by an identification name.

[0006]

In the first aspect of the program tracing device of the present invention, an identification name for identifying trace data to be traced is registered in an identification name registration table. The identification name in this identification name registration table can be registered by the identification name registration means and canceled by the identification name cancellation means. On the other hand, at the time when a trace instruction in the traced program is detected by the trace instruction detection means, the trace presence/absence determination means refers to the identification name registration table and determines whether or not tracing of the trace data is necessary. Then, only the trace data determined to require tracing is stored in the trace buffer and displayed by the trace data display means.

In the second aspect of the program tracing device of the present invention, trace data is stored in the trace buffer at the time when the trace command detection means detects the trace command in the traced program. Of the trace data stored in the trace buffer, only the trace data selected by the identification name is displayed on the trace data display means.

[0008]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of a program tracing device of the present invention. In the illustrated device, an OS 2 traces a traced program 1 to be traced.

The traced program 1 includes a trace macro instruction 3. Trace macro instruction 3 is
The operand indicates the start address of trace data 4. Further, trace data 4 is data to be traced. The trace data 4 in the traced program 1 can be selected by the operator using the identification name shown in FIG. 3, which will be described later. That is, when debugging etc., the operator selects the trace data A and B as the object of tracing.
You can select which one to use using the identification name.

The OS 2 includes an identification name registration table 5, a trace buffer 6, an identification name registration means 7, an identification name cancellation means 8, a trace data display means 9, and a supervisor 1.
Consists of 0. The identification name registration table 5 registers identification names for identifying the trace data 4 to be traced. The trace buffer 6 stores the trace data 4 that needs to be traced. Identification name registration means 7
registers the identification name of the trace data that needs to be traced in the identification name registration table 5. This identification name registration means 7 is
Specifically, it consists of a display 94 and a keyboard 95 shown in FIG.

Identification name cancellation means 8 deletes from the identification name registration table 5 the identification name of trace data that does not require tracing. This identification name cancellation means 8 is also specifically shown in FIG.
It consists of a display 94 and a keyboard 95 shown in FIG. The trace data display means 9 consists of a CRT or the like, and displays the trace data in the trace buffer 6. This trace data display means 9 also specifically includes a display 94 and a keyboard 95 shown in FIG.

The supervisor 10 is a control program that performs core processing such as task management. This includes a trace command detection means 11, a trace presence/absence determination means 12,
Trace data storage means 13 is included. The trace instruction detection means 11 detects the trace macro instruction 3 in the traced program 1 . The trace presence/absence determination means 12 determines whether or not the trace data is a trace target by comparing the identification name in the identification name registration table 5 and the identification name in the trace data 4. The trace data storage means 13 stores the trace data determined by the trace presence/absence determination means 12 in the trace buffer 6.

FIG. 2 is a block diagram of a standard system to which the present invention is applicable. The illustrated system includes a memory 92, a printer 93, a display 94, a keyboard 95, and a disk 96 connected to a bus line 90 of a CPU 91. The CPU 91 processes various data according to programs stored in the memory 92. The memory 92 consists of random access memory, etc.
Various programs and data such as the traced program 1 and the OS 2 shown in FIG. 1 are temporarily stored.

The printer 93 is for outputting data processing results and the like. A display 94 and keyboard 95 are provided for direct operation of the illustrated system by an operator. These constitute the identification name registration means 7, the identification name cancellation means 8, and the trace data display means 9 shown in FIG. The disk 96 is made of a magnetic disk or the like, and stores various programs and data such as the traced program 1 and the OS 2 shown in FIG.

FIG. 3 is a diagram showing the trace data format. As illustrated, the trace data 4 includes an identification name 21, a data size 22, and trace target data 23. The identification name 21 is an identification name corresponding to the identification name registered in the identification name registration table 5 by the identification name registration means 7. For example, if tracing is required for trace data A, the identification name “#1” is registered in the identification name registration table 5. As a result of comparing the identification name in the identification name registration table 5 and the identification name 21 in the trace data 4 by the trace presence/absence determination means, the trace data to be traced is identified depending on whether the two match or not. . Data size 22 indicates the size of trace data 4. The trace target data 23 is data that can be traced by the OS 2.

FIG. 4 is a diagram showing the format of the identification name registration table. As shown in the figure, the identification name registration table 5 includes identification names "#1" to "#1" indicating trace data to be traced.
#m” is registered.

FIG. 5 is a diagram showing the trace buffer format. As shown in the figure, the trace buffer 6 stores trace data “#1” to “#n” that are actually traced.

Next, the operation of the apparatus shown in FIG. 1 will be explained. FIG. 6 is a flowchart showing the processing procedure of the supervisor according to the present invention. That is, tracing is performed in the following procedure. First, the traced program 1 is executed. As a result, trace macro instruction 3 is executed. Then, a software interrupt is generated by the software interrupt instruction in the trace macro instruction 3, and control is transferred to the supervisor 10 (step S61). In the supervisor 10, the trace instruction detection means 11 determines whether or not the interrupt is from the trace macro instruction 3 (step S6).
2). When the interrupt is from the trace macro instruction 3, the trace presence/absence determining means 12 is activated.

The trace presence/absence determining means 12 checks whether the identification name 21 of the trace data 4 is registered in the identification name registration table 5 (step S64). If registered, the trace storage means 13 stores the trace data 4 in the trace buffer 6 (step S65). When the first identification name of the identification name registration table 5 is "ALL", all trace data 4 is unconditionally stored in the trace buffer 6 (step S63). Note that the trace buffer 6 is a cyclic buffer.

Next, the procedure for registering/cancelling an identification name and displaying trace data will be described below. FIG. 7 is a flowchart showing the procedure for registering an identification name. Identification name registration means 7
input the identification name from the keyboard etc. (step S71).
), the input identification name is registered in the identification name registration table 5 (step S73). If the entered identification name is “ALL”
” (step S72), the identification name registration table 5
``ALL'' is registered at the beginning of ``ALL'' (step S74).

FIG. 8 is a flowchart showing the processing procedure for canceling an identification name. The identification name cancellation means 8 inputs an identification name from a keyboard or the like (step S81), and deletes the input identification name from the identification name registration table 5 (step S82).

FIG. 9 is a flowchart showing the processing procedure for displaying trace data. Trace data display means 9
input the identification name from the keyboard etc. (step S91).
), when the identification name is "ALL" (step S92),
All trace data in the trace buffer 6 is displayed on the display (step S93), and in other cases,
Only trace data with the specified identification name is displayed (step S94). That is, the trace data display means 9
Trace data is selected from the trace buffer 6 based on the identification name and displayed.

[0023]

As described above, according to the program tracing device of the present invention, only the necessary trace data can be traced and only the necessary trace data can be displayed based on the identification name. Therefore, trace data can be analyzed easily and efficiently.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of a program tracing device of the present invention.

FIG. 2 is a configuration diagram of a standard system to which the present invention is applicable.

FIG. 3 is a diagram showing a trace data format of the present invention.

FIG. 4 is a diagram showing an identification name registration table format of the present invention.

FIG. 5 is a diagram illustrating a trace buffer format of the present invention.

FIG. 6 is a flowchart showing a processing procedure of a supervisor according to the present invention.

FIG. 7 is a flowchart showing a processing procedure for registering an identification name.

FIG. 8 is a flowchart showing a processing procedure for canceling an identification name.

FIG. 9 is a flowchart showing a processing procedure for displaying trace data.

[Explanation of symbols]

1 Traced program 2 OS 3 Trace macro instruction 4 Trace data 5 Identification name registration table 6 Trace buffer 7 Identification name registration means 8 Identification name release means 9 Trace data display means 10 Supervisor 11 Trace instruction detection means 12 Trace presence/absence determination means 13 Trace data storage means 21 Identification name 22 Data size 23 Trace data

Claims (2)

[Claims] [Claim 1] An identification name registration table for registering an identification name for identifying trace data to be traced; an identification name registration means for registering the identification name in the identification name registration table; and an identification name registration table for registering the identification name in the identification name registration table. an identification name cancellation means for canceling the identification name registered in the traced program; a trace instruction detection means for detecting a trace instruction written in the traced program; trace data for storing in a trace buffer trace data for which tracing is determined to be necessary by the trace instruction detecting means at the time when the trace instruction detecting means detects a trace instruction; A program tracing device comprising a storage means and a trace data display means for displaying trace data in the trace buffer. 2. A trace buffer for storing trace data; a trace instruction detection means for detecting a trace instruction written in a traced program; and a trace instruction detection means for detecting a trace instruction written in a traced program; A program tracing device comprising trace data storage means for storing trace data and trace data display means for displaying trace data selected by an identification name.