JPH0844596A - Command log recording system - Google Patents

Abstract

PURPOSE:To dispense with a message accumulation means other than a log file by suppressing message recording by changing a write position after a command message is written on the log file once. CONSTITUTION:When a command 12 is started up by a system control means 11, a log recording means 13 saves the write start position of an execution message from a write pointer 16 to a preservation pointer 17. Thence, a log write means 15 writes the command message outputted from the command 12 on the log file 14 until the execution of the command 12 is completed. The command message is written on the log file 14 from the write start position instructed by the write pointer 16, and the value of write pointer is updated at every write of the message. When the processing of the command is completed normally, a message suppression flag is read in, and when suppression is designated, the write start position is taken out from the preservation pointer 17, and it is set on the write pointer 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a command log recording system, and more particularly to a command execution message recording system in an information processing system.

[0002]

2. Description of the Related Art As a conventional transfer message recording method,
For example, in Japanese Patent Laid-Open No. 2-310662, as shown in FIG.
A system control unit 41, a command 42, a message storage unit 43 for temporarily storing an execution message for one command, a log recording unit 44 for recording the accumulated messages, and a message for setting whether or not to suppress the recording. A transfer message recording method is disclosed which includes a suppression flag 45 and a log file 46 for recording a message log.

The system control means 41 activates a command 52. The message output by the command 52 is temporarily stored in the message storage means 43.

When the command 42 is completed, the log recording means 44 refers to the message suppression flag 45 in the case of normal termination, and only when the suppression specification is not made, the log recording means 44 stores the message stored in the message storage means 43 in the log file 46. Record to.

As a result, the recording of the normal message can be suppressed as necessary, and the amount of data accumulated in the log file 46 can be reduced.

[0006]

However, in the above-mentioned conventional command message recording system, in order to temporarily store one command execution message in the message storage means and record it in the log file after the command execution is completed, There is a problem that a means for accumulating messages is required separately from the log file.

Further, for example, when the system goes down during the execution of the command, the message is not recorded in the log file from the message accumulating means, so that the message during the command execution from the start of the command execution to the system down is displayed in the log file. There is a problem that is not recorded in.

Therefore, the present invention solves the above problems,
It is an object of the present invention to provide a command log recording method that suppresses log recording at normal termination and that does not require a message accumulating means other than a log file.

[0009]

According to the present invention, in the method of recording a command execution message in a log file, a means for writing the command message in the log file when the command is executed and a write start position are provided. A command log recording method, comprising: a save pointer that saves a message; and a log recording unit that suppresses message recording by returning the write start position from the save pointer to the write pointer. Achieved by.

In the present invention, the means for inhibiting the message recording is configured to restore the write start position from the save pointer to the write pointer when the message inhibit flag indicates inhibition specification. .

The present invention also provides, in a preferred embodiment,
When the command execution message is written to the log file, the log recording unit saves the current write start position of the write pointer to the save pointer, and then outputs the command from the write start position. A message to be written to the log file, and when the command ends normally, control is performed so that the write start position is restored from the save pointer to the write pointer when the message inhibit flag indicates inhibition specification. .

[0012]

According to the present invention having the above structure, the log recording means writes the message in the log file once, and then returns the write position to the saved write position, thereby suppressing the message recording. I do.

Therefore, by temporarily writing the command message to the log file, a means for accumulating a message different from the log file becomes unnecessary, and even when the command is abnormally terminated such as when the system goes down, the command up to the middle is completed. Messages can be recorded in the log file.

[0014]

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

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

As shown in FIG. 1, in the present embodiment, the system control means 11, the command 12, the log recording means 13 for controlling the recording of the message, and the message control information for setting whether or not to suppress the recording. And a log file 14 for recording a message log. Further, the log recording means 13 includes a log writing means 15 and a write pointer 1 indicating the current writing position.
6, and a save pointer 17 for saving the write position
And, including.

The system control means 11 activates the command 12. The message generated by the command 12 is recorded in the log file 14 via the log recording means 13.

The message suppression flag 18 is a flag for instructing whether to output the output message, and is set by the system control means 11.

Next, the operation of the log recording means 13 will be described with reference to FIGS.

Command 12 by the system control means 11
When is started, the log recording means 13 saves the write start position 32 of the execution message from the write pointer 16 to the save pointer 17 (step S1).

Next, until the execution of the command 12 is completed, that is, the message transfer is completed (step S
2), the log writing means 15 writes the command message output by the command 12 to the log file 14 (step S3). As shown in FIG. 3A, the log file 14
At the write start position 32 designated by the write pointer 16.
The command message 33 is written from, and the value of the write pointer 34 is updated every time the message is written.

When the command ends normally (step S4), the message suppression flag is read (step S4).
5) If the inhibition is designated (step S6), the write start position 32 is taken out from the save pointer 17 and set in the write pointer 16.

When the next command is executed, the command message starts again from the write start position 32 in the log file 14
Since the previous command message is overwritten, the same effect as if the previous command message was not written is obtained (see FIG. 3B).

If the command 12 terminates abnormally, or if message record suppression is not specified,
Since the process ends as it is, the command message 34 is recorded in the log file 14 (see FIG. 3C).

As described above, according to this embodiment,
After writing the command message to the log file once, the message output is suppressed only by switching the write pointer, so even if the system goes down during command execution, the command message can be recorded up to the middle. And the message storage means can be omitted.

According to this embodiment, (1) message storage means other than the log file is unnecessary, and (2) even if the entire system goes down during command execution, the command messages up to the middle are written in the log file. It has the advantage that it can be recorded.

[0027]

As described above, according to the present invention,
The following effects can be obtained by having a writing position storage means, which temporarily writes the command message in the log file and then changes the writing position to suppress the message recording.

Message storage means other than the log file becomes unnecessary.

Even when the entire system goes down during command execution, command messages up to the middle can be recorded in the log file.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing flow of a log recording means in the present invention.

FIG. 3A is a diagram for explaining how a command message is written in a log file. FIG. 9B is a diagram illustrating the position of the write pointer where the write start information is restored from the save pointer when the termination is normal and the inhibition is designated. (C) is a diagram for explaining the position of the write pointer at the end of transfer when there is no abnormal end or no suppression designation.

FIG. 4 is a diagram showing a configuration of a conventional command log recording system.

[Explanation of symbols]

 11 system control means 12 command 13 log recording means 14 log file 15 write means 16 write pointer 17 save pointer 31 previous command message 32 write start position 33 command message 34 write pointer 41 system control means 42 command 43 message storage means 44 log recording means 45 message suppression flag 46 log file

Claims (3)

[Claims] 1. A method of recording a command execution message in a log file, a means for writing a command message in a log file when a command is executed, a save pointer for saving a write start position, and the write operation from the save pointer. A command log recording method comprising: a log recording unit having a unit for suppressing message recording by returning a start position to a write pointer. 2. The means for inhibiting the message recording, when the message inhibition flag indicates an inhibition specification, restores the write start position from the save pointer to the write pointer. Command logging method. 3. The write start position after the log recording means saves the current write start position of the write pointer to the save pointer when writing a command execution message to the log file. Writes the message output from the command to the log file, and when the command ends normally, restores the write start position from the save pointer to the write pointer when the message suppression flag indicates suppression specification. The command log recording method according to claim 1, wherein the command log recording method is controlled as follows.