JPS6380343A - Output system for trace information - Google Patents

Abstract

PURPOSE:To quicken the coping to a system fault without manual intervention by detecting the occurrence of an event so as to apply intermission/restart of collection of trace information. CONSTITUTION:In detecting the occurrence of a prescribe even requiring collection of trace information, an event occurrence detection section 12 starts a trace information collection control section 13. The control section 13 allows the trace information collection section 11 to stop the collection of trace information and starts a trace information output section 14 to output trace information 16 and allows the collection section 11 to start the collection of trace information after the end of output. Thus, the intermission/output of collection of the trace information and the restart of collection are executed quickly and timely without manual intervention from the outside of system.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a trace information output method applied to an information processing system.

Conventional technology Conventionally, in the general trace information output method, when an event that requires trace information for analysis etc. occurs in the system, a notification to that effect is sent to the outside, and based on this notification, the collection of trace information is started. Interruption, output of trace information, and restart of collection of trace information after output is completed are performed by instructions from outside the system.

In addition, in some types of trace information output methods, notification of the occurrence of an event to the outside and stopping of collection of trace information are automatically performed, and subsequent output of trace information and restart of collection of trace information are performed outside the system. This is done under instructions from.

Problems to be Solved by the Invention In the conventional trace information output method described above, whether there is a need to output trace information to the outside is constantly monitored from the outside based on event occurrence notification information (if necessary). In addition, when such an event occurs, it is necessary to interrupt the collection of trace information, output the trace information, and restart the collection of the trace information after the output is completed. There is a problem in that collection cannot be restarted and system failures cannot be quickly dealt with.

Configuration of the Invention Means for Solving the Problems The trace information output method according to the present invention includes a trace information collection unit that collects trace information in a storage device, and a trace information collection unit that detects the occurrence of an event that requires the output of trace information. It includes an event occurrence detection section, a trace information collection control section that controls suspension/resumption of collection of trace information, and a trace information output section that outputs collected trace information from the storage device to the outside.

When the event occurrence detection section detects the occurrence of a predetermined event requiring collection of trace information, it activates the trace information collection control section. The activated Tosys information collection control unit
By causing the trace information collection unit to stop collecting trace information, activating the trace information output unit to output trace information, and waiting for the end of this output to make the trace information collection unit start collecting trace information, The system is configured so that collection of trace information can be stopped, outputted, and collected again in a timely and prompt manner without human intervention from outside the system.

Hereinafter, the operation of the present invention will be explained in detail together with examples.

Embodiment FIG. 1 is a conceptual diagram of an embodiment of the present invention.
12 is a trace information collection unit that writes trace information to a trace information file 16; 12 is an event occurrence detection unit that detects the occurrence of a predetermined event that requires collection of trace information; 13 is a trace unit that controls interruption/resumption of trace information collection. 14 is an information collection control unit; 14 is a trace information output unit that reads a predetermined amount of trace information from the trace information file 16 and edits and outputs it as a constituent part of the trace information output list 18; 15 is a trace buffer; 16 is a secondary storage for trace information Trace information file stored in the device, 1
7 is a trace information control flag.

When the trace information collection unit 11 receives a trace information collection request from the system, it starts the trace information collection process shown in the flowchart of FIG.

The trace information collection unit 11 inspects the input parameters in the first step 21, and if there is no error, proceeds to the next step 22, and based on the control flag 17 for trace information collection controlled by the trace information collection control unit 13. Check whether collection is possible. If trace information collection is possible, the trace information collection unit 11 proceeds to the next step 23 and checks whether writing is possible by checking whether there is enough free space in the trace buffer 15 to write the trace information to be collected. .

If the trace information collection unit 11 can write the trace information into the trace buffer 15, the process proceeds to step 24, and collects the trace information by sequentially writing the trace information into the trace buffer 15. If the contents of the trace buffer 15 are full and there is no room to write new trace information, the trace information collection unit 11 proceeds to step 25 and sequentially writes the contents of the trace buffer 15 to the trace information file 16, and then returns to step 24 described above. Then, the trace information is collected into the trace buffer 15.

When the trace information collection unit 11 detects an error in step 21 or detects that trace information cannot be collected in step 22, it immediately ends the collection process.

The event occurrence detection unit 12 is activated every time a predetermined event occurs within the computer system, and executes the processing shown in the flowchart of FIG. 3.

The event occurrence detection unit 12 checks the input parameters in the first step 31, and if there is no error, proceeds to step 32,
Check whether the event that occurred corresponds to a predetermined event that is specified as requiring trace information to be collected. If the event that has occurred is an event that requires the collection of trace information, the event occurrence detection unit 12 proceeds to step 33 and outputs the trace information to the trace information collection control unit 13.
After making a request, the process ends.

The event occurrence detection unit 12 ends the process immediately after detecting an error in step 31 or detecting in step 32 that the event that has occurred is an event that does not require collection of trace information.

When the trace information collection control unit 13 starts operating, it checks the input parameters in the first step 41, and if there is no error, proceeds to step 42, and determines that the cause of activation is a trace information output request from the event occurrence detection unit 12. It is checked whether there is a request to resume collection from the trace information output unit 14 upon completion of output of trace information. If the cause of activation is a request to output trace information, the trace information collection control unit 13 proceeds to step 43 and changes the trace information collection control flag 17 to a state in which collection is disabled, thereby stopping the collection processing of the trace information collection unit 11. interrupt. The trace information collection control unit 13 performs the next step 44.
After the trace information remaining in the trace buffer 15 is outputted to the trace information file 16, the process advances to step 45, where a trace information output request is made to the trace information output unit 14, and all processing ends.

When the trace information collection control unit 13 detects in step 42 that the cause of activation is a request to resume collection from the trace information output unit 14 that has finished outputting trace information, the process proceeds to step 46 and sets the trace information collection control flag. 1
7 to a collecting enabled state, the trace information collection unit 11 restarts the collection processing, and all processing ends.

The trace information output unit 14 includes the trace information collection control unit 1
When the output request is received from No. 3, the output processing shown in the flowchart of FIG. 5 is started.

The trace information output unit 14 first inspects the input parameters in step 51, and if there is no error, the process proceeds to step 52, where it sequentially reads a predetermined amount of trace information from the trace information file 16. The trace information output unit 14 proceeds to the next step 53 and creates a part of the race information output list 18 by editing and printing out the read trace information. The trace information output unit 14 proceeds to the next step 54 and determines whether reading, editing, and printing of the trace information has been completed to the end of the trace information file 16. If not, the trace information output unit 14 proceeds to step 52.
Return to , and repeat reading, editing, and printing out the unoutput trace information.

The trace information output unit 14 outputs a trace information file 16.
When it is detected in step 54 that the reading, editing, and printing of the trace information has been completed to the end of the trace information, the process proceeds to step 5.
In step 5, a request to resume collection is issued to the trace information collection control unit 13, and all processing ends.

Above, we have exemplified a configuration in which trace information is first written into the trace buffer 15 and when it becomes full, it is moved to the trace information file 16, and output is also performed from the trace information file 16.
It is also possible to adopt a configuration in which collection and output are performed using only the trace buffer 15 without using the trace buffer 15.

Also, although we have illustrated a configuration that prints out trace information,
It is also possible to configure the trace information to be output and saved in a secondary storage device.

Effects of the Invention As described in detail above, the trace information output method of the present invention includes a trace information collection unit that collects trace information in a storage device, an event occurrence detection unit that detects the occurrence of an event,
Since the configuration includes a trace information collection control means that controls the interruption/resumption of trace information collection, and a trace information output unit that outputs collected trace information from the storage device to the outside, human intervention from outside the system is not required. The collection of trace information can be stopped, outputted, and collected in a timely and prompt manner without causing any trouble, and system failures can be quickly dealt with.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of a system according to an embodiment of the present invention, and FIGS. 2 to 5 are flowcharts for explaining the operation of each part in FIG. 1. 11...Trace information collection unit, 12...Event occurrence detection unit, 13...Trace information collection control unit, 14...
Trace information output unit, 15...Trace buffer, 1
6...Trace information file, 17...Trace information collection control flag, 18...Trace information output list.

Claims (1)

[Scope of Claims] A trace information collection unit that collects trace information in a storage device, an event occurrence detection unit that detects the occurrence of an event, a trace information collection control unit that controls suspension/resumption of collection of trace information, and a trace information output unit that outputs collected trace information from the storage device to the outside, and when the event occurrence detection unit detects the occurrence of an event requiring collection of trace information, the event occurrence detection unit outputs the collected trace information to the outside. The trace information collection control unit that started the operation causes the trace information collection unit to interrupt the collection of trace information, causes the trace information output unit to output trace information, waits for the end of this output, and then resumes tracing. A trace information output method characterized by causing an information collection unit to restart collection of trace information.