JPH0324638A - Routine tracing device - Google Patents

Abstract

PURPOSE:To clearly display how to transfer execution control between routines by filing the routine tracing information of routine start and end information in a routine tracing information storing part and editing the filed contents with a required method and outputting the edited result. CONSTITUTION:The execution start information and execution end information of respective routines embedded in an original program controlled by a routine tracing information output function adding part 3 to be traced at its routines are outputted from a routine tracing information output part 2 and stored and filed in a routine tracing information storage part 4. The storage part 4 is referred, the start/ end information is edited in relation to the levels of routines by a routine tracing information editing part 5 where control information is supplied from a control information input part 6 and the edited result is outputted from a routine tracing information output part 7 as a list. Since the output is displayed, how to transfer the execution control between routines can be clearly displayed, program structure can easily be recognized and the cause of abnormal end can be easily and surely inspected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a routine tracking device that tracks the execution status of a routine that constitutes a program executed in an electronic computer system. [Prior Art] When a running program terminates abnormally, a variety of useful information is required to investigate the cause. Conventionally, when a program such as this terminates abnormally, a routine tracing device (tracer) operates and outputs routine tracing information, including ■ the name of the routine that caused the abnormality, and ■ the name of the routine that called the routine that caused the abnormality. ．． [Problems to be Solved by the Invention] As mentioned above, conventional routine tracking devices could only output the name of the routine that caused the abnormality and the name of the routine that called that routine as routine tracking information. It is unclear how control of execution is transferred between routines after starting a routine or executing a particular routine until control of execution is passed to the routine that terminated abnormally, and the cause of the abnormal termination is unclear. The drawback was that it was difficult to investigate. The present invention has been proposed in view of the above points, and its purpose is to provide a routine tracking device that can clearly display how execution control is transferred between routines. It is in. [Means for Solving the Problems] In order to achieve the above object, the present invention provides start information that is embedded in a program that is a target of routine tracking, and that indicates the start of execution and the end of execution of each routine included in the program. a routine tracking information output section that outputs end information indicated by the routine, a routine tracking information storage section that stores the output start information and end information in a file, and edits the stored start information and end information in association with the routine level. It is equipped with a routine tracking information editing section and a routine tracking information output section that outputs the edited results as a list. [Operation] In the routine tracking device of the present invention, the routine tracking information output unit embedded in the program to be routine tracked outputs start information indicating the start of execution and end of execution of each routine included in the program. The routine tracking information storage section stores the output start information and end information in a file, and the routine tracking information editing section edits the stored start information and end information in association with the level of the routine. Then, the routine tracking information output section outputs the edited results as a list. (Examples) Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a structural diagram showing an embodiment of the routine tracking device of the present invention. In FIG. 1, the present invention comprises an original program section 1, a routine tracking information output section 2, a routine tracking information output function addition section 3, a routine tracking information storage section 4, a routine tracking information editing section 5, a control It consists of an information human resources section 6 and a routine tracking information output section 7. The functions of each part are as follows. Original program part l: This is a program that is the target of routine tracking and is being watched by multiple routines. Routine tracking information output unit 2: Embedded at the beginning and end of each routine that makes up the original program unit 1 by the routine tracking information output function addition unit 3, and includes start information indicating the start of execution of each routine and end information indicating the end of execution. It has a function to output. Specifically, for example, CALL
It consists of statements and is inserted before the first executable statement and after the last executable statement of each routine, and starts and passes the routine name, start, and end data as arguments to the routine tracking information storage unit 4. .

Routine tracking information output function addition section 3: Has a function to add a routine tracking information output section 2 to the original program section l. The details are as described above. Routine tracking information storage section 4; routine tracking information output section 2
It has a function to receive the start information and end information output by and store them in a file (not shown). Routine tracking information editing section 5; routine tracking information storage section 4
It has a function to edit the start and end information stored in the file by associating it with the level of the routine. The details of the process are shown in the flowchart in Figure 2. Control information input section 6: Routine tracking information II! It has a function of inputting control information such as the name of a routine for starting routine tracking to the IL collection section 5. In other words, if the original program part l is composed of many routines, if all of them are tracked, the list that will be output will become huge, which will actually hinder the analysis, so This provides instructions to limit the level of routine. Routine tracking information output unit 7; has a function of outputting the results collected by the routine tracking information klA collection unit 5 as a list to an output device (not shown) such as a printer. The operation of the above embodiment will be explained below with specific examples. Assume now that the program to be tracked by routines consists of subroutines SUBA-SUBF as shown in FIG. Note that FIG. 3 shows a part of the original program section 1 in FIG. 1, and only shows the level below which routine tracking is performed. That is, it is assumed that "subroutine SUBAJ is designated by the control information input unit 6. Also, assume that the program in FIG. 3 is controlled to execute in the order shown in FIG. 4. In FIG. When an original program part 1 having program parts as shown in FIG. 3 is given, a routine trace information output part 2 is embedded at the beginning and end of each routine by the routine trace information output I! function addition part 3.This routine trace When the original program section 1 with the information output section 2 is executed, when control is passed to each routine, the routine tracking information output section 2 outputs start information indicating the start of execution of the routine, and also starts the execution of the routine. When the routine finishes, end information indicating the end of execution of that routine is output.In the example shown in Figure 4, when control is passed to subroutine SUBA, start information for subroutine SUBA is output, and when control is passed to subroutine SUBB. At the point in time, the start information of subroutine SUBB is output.
Since subroutine SUBA has not yet finished executing when control is transferred to BB, no completion information for subroutine SUBA is output. Similarly, subroutine SUB
When control is passed to C 12j, start information for subroutine SUBC is output, and when control is passed to subroutine SUBD, start information for subroutine SUBD is output. Then, as the lowest-level subroutine SUBD ends, the higher-level subroutines SUBC and SUBB also end in sequence, and therefore, at this point, the end information of the subroutines SUBD, SUBC, and SUBB is sequentially output. Thereafter, the start information or end information is output as described above until all programs terminate normally or are interrupted due to an abnormality as shown in subroutine SUBC. Then, this information is stored and retained in a file by the routine tracking information storage section 4. In parallel with the execution of the above program, or after the program execution ends due to interruption or the like, the routine tracking information editing section 5 operates and edits based on the information stored in the file by the routine tracking information storage section 4. That is, the routine tracking information editing section 5, as shown in FIG.
Read information from the file one by one (Step 5l)
, it is determined whether the information is at the level of a routine that performs routine tracking (step 52). That is, the routine name entered in advance by the control information input unit 6 is compared with the routine name included in the read information, and the information from the arrival of the start information of the matching routine name to the arrival of the end information of the routine is tracked. The level is set to .
If it is not the target (No in step 52), the process returns to step 5l and is repeated. In the examples shown in Figures 3 and 4, reading is repeated until the start information for the first subroutine SUBA is read. In the case of information to be tracked (YES in step 52)
, determines whether the information is start information or end information (step 53), and if it is start information, counts up a level counter (not shown) (step 54), and calculates the value of the level counter and the start information. Write the routine name included in the information on the print bus sofa (not shown) (step 55) and return to step 5.Here, the level count is used to display the level of the routine corresponding to the information in a list. , here, the larger the value, the lower (deeper) the level. Also, the print buffer is used to temporarily store data to be output to an output device such as a printer.
In the case of the start information output when control is passed to the first subroutine SUBA in the figure, if the previous value of the level counter was "2", this is counted up to "3" (step 54) and printed. This “3” in Buffa
” and the subroutine name rsUBAJ are written as a pair (step 55). On the other hand, in step 53 above, if the read information is end information, it is determined whether or not the immediately preceding information was start information (step 56), and if it is start information, by this point The contents of the stored print buffer are output to the routine tracking information output section 7 (step 57).

Note that if the immediately preceding information is not the start information in step 56, step 57 is not executed. Here, in the case of end information, and if the immediately preceding information is start information, the content of the print bus sofa is output at the lowest level, for example, in the example of FIGS. 3 and 4, the subroutine This is because a break occurs when SUBD or subroutine SUBF is reached. Thereafter, the level counter is counted down (step 58), and the process returns to step 5l.

In the case of Figure 4, the first subroutine SUBA→SUBB
→SUBC→SUBD and subroutine SUBD
r that was written to the print buffer at the stage when the process was completed 3. S tJ B A 4. SUBB
5. SUBC 6. The contents of SUBDJ are output to the routine tracking information output unit 7 (step 57>. On the other hand,
If the information read from the file in step 5l no longer exists due to an interruption, etc., the contents of the print buffer stored up to this point and, if necessary, a message indicating that an interruption has occurred are output as routine tracking information. 7 (step 59), and the process ends.

The routine tracking information output unit 7 edits the given data into a list image and outputs it to an output device such as a printer as appropriate. The routine trace result list for the programs in Figures 3 and 4 is as shown in Figure 5, in which the subroutines to which execution control has passed are displayed in order, and the unexecuted "Book*Book*Book*<=STOPPEDJ" indicates that an interruption has occurred in subroutine StJBC at level 5. [Effects of the Invention] As explained above, in the routine tracking device of the present invention, after starting program execution or The list clearly shows how execution control was transferred between routines, from when a particular routine was executed until execution control was passed to the routine that terminated abnormally, making it easier to determine the cause of the abnormal termination. In addition, since the list is created taking into account the level of each routine, it is possible to output it in a form close to the program structure, which also has the effect of making it easier to understand the program structure.

[Brief explanation of drawings]

Fig. 1 is a structural diagram showing an embodiment of the routine tracking device of the present invention, Fig. 2 is a flowchart showing the processing of the routine tracking information editing section in Fig. 1, and Fig. 3 is a program targeted for routine tracking. Figure 4 is a diagram showing the execution order of the program in Figure 3, and Figure 5 is an example of a routine tracing result list output as a result of routine tracing of the program in Figure 3. FIG. In the figure, 1...Original program section 2...
Routine tracking information output section 3... Routine tracking information output function addition section 4... Routine tracking information storage section 5... Routine tracking information editing section 6...
・Control information input section

Claims (1)

[Scope of Claims] A routine tracking information output unit that is embedded in a program to be tracked and outputs start information indicating the start of execution and end information indicating the end of execution of each routine included in the program; A routine tracking information storage section that stores the stored start and end information in a file, a routine tracking information editing section that edits the stored start and end information in association with the routine level, and outputs the edited results as a list. 1. A routine tracking device comprising: a routine tracking information output unit.