JPH11212820A - System and method for tracing program execution process - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a program execution process tracing system which internally gathers trace information on a program without exerting any influence on the original process, and analyzes the trace information at a request and obtains and displays an execution sequence of the program. SOLUTION: A trace information analysis display program 20 allows a trace information acquisition part 22 to request a trace information informing mechanism 15 of an application program 10 to report trace information 14 first. When the trace information 14 is not reported in spite of the request, a trace information segmentation part 21 segments the trace information 14. Then a trace information analysis part 23 analyzes the trace information 14 which is thus obtained to obtain the execution sequence of the application program 10 and an execution sequence display part 24 displays the acquired execution sequence through a display.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a program execution process tracking system and a program execution process tracking method for tracking a program execution process.

[0002]

2. Description of the Related Art When each request (service) issued from an application program falls into a response delay state such as no response for some reason, the following is conventionally performed in order to analyze the execution sequence of the program. The method was used. (Method 1) The execution program compiled and linked in the debug mode is executed under the control of the debugger, and a problematic point is specified. (Method 2) The execution state of the program is analyzed by dynamically attaching or dumping the memory state of the execution program.

However, such a method has the following disadvantages. (Method 1) Since compiling and linking in the debug mode involves disadvantages such as an increase in the size of an executable program and a slower execution, a program to be normally commercialized must be provided in the debug mode. Almost no. That is, when an event of interest occurs, it cannot be resolved.

(Method 2) It is difficult to logically associate a memory dump image to be referenced with a corresponding program.

[0005]

As described above, in the prior art, as a method of analyzing the execution sequence of a program, an execution program compiled and linked in a debug mode is executed under the control of a debugger, and a problematic point is identified. Analyzing the execution state of the program by specifying it or by dynamically attaching or dumping the memory state of the execution program, etc., has been adopted. Compiling and linking have the disadvantages of increasing the size of the executable program or slowing down the execution, so it is unlikely that normally commercialized programs will be provided in debug mode. When something happens, it can be resolved. No or difficult logical correspondence between the memory dump referenced image and corresponding program, drawbacks such as were present.

The present invention has been made in view of such circumstances. For example, when various requests (services) issued from an application program fall into a response delay state such as no response, the program execution sequence is changed. For analysis, the means for internally collecting trace information and the means for extracting the internally collected trace information from the outside are linked to execute the request where the request is interrupted and up to that point. It is an object of the present invention to provide a program execution process tracking system and a program execution process tracking method for efficiently presenting a sequence.

[0007]

According to the present invention, in order to achieve the above-mentioned object, a trace collection module for collecting trace information of a target module to be tracked,
A trace information notification module that reads out the trace information collected by the trace collection module and notifies the request source of the information is combined with the target module, and during normal operation, the trace information is internally collected in a memory space allocated in advance. When the program goes into a response delay state such as no response, the external module for trace analysis display requests notification of the collected trace information, analyzes the received trace information, and analyzes the received trace information. The result (execution sequence) is displayed.

That is, in the present invention, it is not necessary to compile and link in a debug mode to track the execution sequence of a program, and it is not necessary to read a memory dump or the like. Further, since this trace information is internally collected in the memory space, it does not create a new large overhead, and hardly affects the original processing of the program.

Further, according to the present invention, when an external module for trace analysis and display requests notification of trace information, and when there is no notification of trace information as a response to the request, the external module for trace analysis and display itself collects the information. The extracted trace information is cut out.

That is, according to the present invention, even if the program falls into an overall abnormal state such that the program cannot accept any requests, the execution sequence can be traced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a program execution process tracking system according to an embodiment of the present invention.

As shown in FIG. 1, in the program execution process tracking system of this embodiment, a trace collection mechanism 12 for collecting trace information 14 necessary for tracking a program execution sequence in an application program 10. And a trace information notifying mechanism 15 for reading the trace information 14 and notifying the request source. This incorporation is performed, for example, by linking an object program created by compiling a source program with a trace information notification mechanism object and a trace collection mechanism object, as shown in FIG.

The trace collecting mechanism 12 is operated by being called from the main processing section 11 of the application program 10. At the time of this calling, the identifier of any one of the services 13 is given as an argument. And
The trace collection mechanism 12 activates the service 13 indicated by the identifier, and the activated service 13
And collects it in a predetermined format in a memory space allocated in advance. That is, the main processing unit 11 directly activates the service 13 which does not require the collection of the trace information 14, while the service 13 which does not require the collection of the trace information 14
Is activated via this trace collection mechanism 12 only. The trace collection mechanism 12 uses the memory space for storing the trace information 14 by circulating the memory space (when the allocated memory space is full, the oldest trace information 14 is discarded and newly collected. The trace information 14 is stored).

Thus, for example, when the main processing unit 11 is configured as shown in FIG. 3 to sequentially activate the service (a) to the service (f), the service (c) and the service (e) therein Only the trace information 14 is collected.

On the other hand, when an external program requests notification of the trace information 14, the trace information notification mechanism 15 reads the trace information 14 and notifies the read source of the read trace information 14 to the request source. . The trace information notification mechanism 15 includes a main processing unit 11, a trace collection mechanism 12, and various services 13
Independent of the above, it is configured to be operable as a separate thread.

Further, in the program execution process tracking system of this embodiment, the trace information 14 collected by the trace collection mechanism 12 is stored in the trace information analysis and display program 2.
The execution sequence is obtained by analyzing with 0.

This trace information analysis display program 20
Is a trace information extracting unit 21 as shown in FIG.
A trace information acquisition unit 22, a trace information analysis unit 23, and an execution sequence display unit 24 are provided.

The trace information extracting section 21 extracts the trace information 14 from the entire memory space allocated to the application program 10. This extraction is performed by searching for a predetermined format that is predetermined as a storage format of the trace information 14.

The trace information acquiring unit 22 acquires the trace information 14 by requesting the trace information notifying unit 15 of the application program 10 to notify the trace information 14.

The trace information analysis unit 23 first requests the trace information acquisition unit 22 to acquire the trace information 14,
Only when the acquisition of the trace information 14 by the trace information acquisition unit 22 fails (in this case, the application program 10 is considered to be in an overall abnormal state), the trace information
Ask for the cutout. And the trace information analysis unit 2
3 acquires the execution sequence of the application program 10 by analyzing the trace information 14 received from either the trace information extracting unit 21 or the trace information acquiring unit 22.

The execution sequence display unit 24 receives the execution sequence of the application program 10 as the analysis result of the trace information analysis unit 23, and displays the execution sequence on a display or the like.

FIG. 4 shows the operation procedure of the trace information analysis and display program 20. The trace information analysis display program 20 first receives input of identification information for specifying the application program 10 to be traced in the execution sequence (step S1), and the application program 1 specified by the identification information
The trace information acquiring unit 22 requests the trace information notifying unit 15 of 0 to notify the trace information (step S2).

In response to this request, the trace information notification mechanism 1
5 has not been notified of the trace information 14 (No in step S3), the trace information analysis display program 20
Is the trace information 1 by the trace information extracting unit 21.
4 is executed (step S4).

When the trace information 14 is obtained in this manner, the trace information analyzer 23
Is analyzed to obtain an execution sequence of the application program 10 (step S5).

Then, the execution sequence display unit 24 displays the execution sequence of the application program 10 as the analysis result of the trace information analysis unit 23 via a display or the like.

As described above, according to the program execution process tracking system of this embodiment, the execution sequence of the application program 10 when the application program 10 is in a response delay state or in an overall abnormal state can be easily set. Will be able to track.

Further, since the trace information 14 is stored in the memory space allocated to the application program 10, it does not create a new large overhead and hardly affects the original processing of the application program 10.

Since the method of the present invention is realized as software, a program that can be executed by a computer includes a floppy disk,
It can be stored and distributed on a computer-readable recording medium such as an optical disk and a semiconductor memory.

[0029]

As described above in detail, according to the present invention, a program for internally collecting trace information and a means for extracting the internally collected trace information from the outside are linked to each other. It is necessary to compile and link in the debug mode to track the execution sequence when the program falls into a response delay state such as no response, or when the program falls into an overall abnormal state where no requests can be accepted. There is no need to read a memory dump, etc., and it is possible to perform the reading very efficiently.

Further, since this trace information is collected internally in the memory space, it does not create a new large overhead and hardly affects the original processing of the program.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a program execution process tracking system according to an embodiment of the present invention.

FIG. 2 is an exemplary view for explaining incorporation of a trace collection mechanism and a trace information notification mechanism of the embodiment into an allocation program;

FIG. 3 is an exemplary view showing a procedure for collecting trace information according to the embodiment;

FIG. 4 is an exemplary flowchart showing the operation procedure of the trace information analysis and display program of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Application program 11 ... Main processing part 12 ... Trace collection mechanism 13 ... Various services 14 ... Trace information 15 ... Trace information notification mechanism 20 ... Trace information analysis display program 21 ... Trace information cut-out part 22 ... Trace information acquisition part 23 ... Trace Information analysis unit 24: execution sequence display unit

Claims (9)

[Claims] 1. A program execution process tracing system for tracing the execution process of a program, wherein the system is combined with a target module to be tracked, and trace information of the target module is collected and assigned to the target module or its own operation. A trace collection unit for storing in a predetermined format in a memory space, a trace information notification coupled to the target module, reading trace information collected by the trace collection unit and stored in the memory space, and notifying a read request to a request source Means, a trace information obtaining means for requesting the trace information notifying means to notify the trace information, and a trace for analyzing the trace information obtained by the trace information obtaining means to obtain an execution process of the target module. Information analysis means, and the trace information analysis means Program execution process tracking system characterized by comprising an execution process display means for displaying the execution process of the object modules. 2. A program execution process tracing system for tracing the execution process of a program, wherein the system is combined with a target module to be tracked, and trace information of the target module is collected and assigned to the target module or its own operation. Trace collection means for storing in a predetermined format in a memory space, trace information extraction means for extracting trace information collected by the trace collection means and stored in the memory space, and trace extracted by the trace information extraction means Trace information analysis means for analyzing information to obtain the execution process of the target module; and execution process display means for displaying the execution process of the target module obtained by the trace information analysis means. Program execution process tracking system. 3. A program execution process tracing system for tracing the execution process of a program, wherein the system is combined with a target module to be tracked, and trace information of the target module is collected and assigned to the target module or its own operation. A trace collection unit for storing in a predetermined format in a memory space, a trace information notification coupled to the target module, reading trace information collected by the trace collection unit and stored in the memory space, and notifying a read request to a request source Means, a trace information obtaining means for requesting the trace information notifying means to notify the trace information, a trace information extracting means for extracting the trace information collected by the trace collecting means and stored in the memory space, Acquired by the trace information acquisition means Trace information analyzing means for analyzing the race information or the trace information extracted by the trace information extracting means to obtain the execution process of the target module; and displaying the execution process of the target module obtained by the trace information analysis means. A program execution process tracking system, comprising: an execution process display unit. 4. A program execution process tracing method for tracing an execution process of a program, comprising: a trace collection unit that collects trace information and stores it in a predetermined format in a memory space allocated in advance; Coupling trace information notifying means for reading out the trace information stored in the memory space and notifying the request source to a target module to be traced; and requesting the trace information notifying means to notify the trace information. Analyzing the acquired trace information to obtain an execution process of the target module; and displaying the obtained execution process of the target module. Tracking method. 5. A program execution process tracing method for tracing a program execution process, wherein a trace collection means for collecting trace information and storing it in a predetermined format in a memory space allocated in advance is connected to a target module to be tracked. Performing the step of extracting the trace information collected by the trace collection unit and stored in the memory space; analyzing the extracted trace information to obtain an execution process of the target module; Displaying the execution process of the target module as described above. 6. A program execution process tracing method for tracing an execution process of a program, comprising: a trace collection unit for collecting trace information and storing it in a predetermined format in a memory space allocated in advance; Coupling trace information notifying means for reading out the trace information stored in the memory space and notifying the request source to a target module to be traced; and requesting the trace information notifying means to notify the trace information. Cutting out the trace information collected by the trace collection unit and stored in the memory space when there is no notification of the trace information from the trace information notification unit in response to the request; Trace information or the extracted trace information Wherein acquiring the execution process of the object module, the program execution process tracking method characterized by comprising the step of displaying the execution process of the object modules in which the acquired by. 7. A program for tracing an execution process of a program, comprising: a trace collection unit for collecting trace information and storing the same in a predetermined format in a memory space allocated in advance; and a program collected by the trace collection unit. Coupling trace information notifying means for reading out the trace information stored in the memory space and notifying the request source to a target module to be traced, requesting the trace information notifying means to notify the trace information, A computer-readable recording medium that records a program for operating a computer to analyze the acquired trace information to acquire an execution process of the target module, and to display the acquired execution process of the target module. 8. A program for tracing the execution process of a program, wherein a trace collection means for collecting trace information and storing it in a predetermined format in a memory space allocated in advance is connected to a target module to be tracked. Extracting the trace information collected by the trace collection unit and stored in the memory space; analyzing the extracted trace information to obtain an execution process of the target module; and executing the obtained target module. A computer-readable storage medium storing a program for operating a computer to display a process. 9. A program for tracing the execution process of a program, comprising: a trace collection means for collecting trace information and storing it in a predetermined format in a memory space allocated in advance; Coupling trace information notifying means for reading out the trace information stored in the memory space and notifying the request source to a target module to be traced, requesting the trace information notifying means to notify the trace information, When there is no notification of the trace information from the trace information notifying means in response to the request, the trace information collected by the trace collecting means and stored in the memory space is cut out, and the notified trace information or the cut out Analyzing the trace information obtained, and acquiring the execution process of the target module, The acquired purpose computer readable recording medium recording a program for operating the computer to display the execution process of the module.