JPH064175A - Timer managing system - Google Patents

Abstract

PURPOSE:To prevent burden on a computer system due to the execution of timer interrupt from being increased in timer management. CONSTITUTION:A burden decision means 7 decides burden information on the computer system. A timer interrupt interval value decision means 3 decides a timer interrupt interval value to reduce the burden on the computer system based on the burden information. The timer interrupt can be applied to a timer 8 at the interval of the timer interrupt interval value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timer management system, and more particularly to a timer management system for managing a timer in a computer system.

[0002]

2. Description of the Related Art A conventional timer management system is, for example,
When the user sets a timer value such as 1 second, 30 seconds, and 5 minutes and makes a request, a timer interrupt is received at intervals of 100 milliseconds, and the timer value is subtracted every 100 milliseconds. It is a method of notifying that the time-out has occurred when the time becomes 0 seconds or less.

[0003]

The above-mentioned conventional timer management system does not change the interrupt interval value of the timer even when the system is under heavy load because the timer interrupt is performed while the interrupt interval value is kept constant. It has a drawback that the timer interrupt processing is continued and the system load is further increased.

[0004]

A timer management system of the present invention includes a timer management table for registering information required when a timer is used, a timer requesting means for registering the timer management table, and a system of the system. Load determining means for determining the load status, timer interrupt interval value determining means for determining the timer interrupt interval value based on the load information received from the load determining means, and setting the timer interrupt interval value in the timer to start the timer. A timer starting unit, a timer for generating a timer interrupt after the timer interrupt interval value has elapsed, and a timer updating unit for updating the timer management table and determining whether to continue the timer request again. Has been done.

[0005]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a timer management system of the present invention. Referring to FIG. 1, in the present embodiment, the timer utilization program 1, the timer request means 2 of the timer management system 9, the timer interrupt interval value determination means 3, the timer starting means 4, the timer updating means 5, the timer management table 6, and the load. It is composed of a judging means 7 and a timer 8.

FIG. 2 is a flow chart showing an example of the operation of the timer requesting means 2. Referring to FIG. 2, the timer request means 2 registers the timer management table 6 (step 2
1), it is determined whether the timer is in the activated state (step 2
2), the start flag is set (step 2)
3).

FIG. 3 is a flow chart showing an example of the operation of the timer interrupt interval value determining means 3. Referring to FIG. 3, the timer interrupt interval value determining means 3 inputs the load information (step 31) and determines the timer interrupt interval value (step 32).

FIG. 4 is a flow chart showing an example of the operation of the timer starting means 4. Referring to FIG. 4, the timer starting means 4 sets a timer interrupt interval value (step 41),
The timer 8 has been started (step 42).

FIG. 5 is a flow chart showing an example of the operation of the timer updating means 5. Referring to FIG. 5, timer updating means 5
Updates the timer management table 6 (step 51),
Whether the timer value is positive or negative is determined (step 52), the timer management table 6 is deleted (step 53), timeout notification processing (step 54), presence / absence determination of the timer management table 6 (step 55), timer interrupt interval value determination means. Three
Is called (step 56) and the activation flag is reset (step 57).

FIG. 6 is a table layout diagram showing an example of the timer management table 6. Referring to FIG. 6, the timer management table 6 has a timer value 61 and a timeout processing program address 62.

Next, the operation of this embodiment will be described with reference to the drawings. First, the timer using program 1 passes the time until the time-out occurs and the address of the program to be activated when the time-out occurs to the timer requesting means 2 to operate the timer requesting means 2. The timer request means 2 registers the timer management table 6 (step 2
According to 1), the time until the timeout occurs is registered in the timer management table 6 as the timer value 61, and the address of the program to be activated when the timeout occurs is registered in the timer management table 6 as the timeout processing program address 62. Next, it is determined whether or not the timer 8 is activated in the determination of the timer activation state (step 22). If the timer 8 is not activated, the activation flag is set (step 23). Set the boot flag.

Next, the timer requesting means 2 operates the timer interrupt interval value determining means 3. The timer interrupt interval value determining means 3 receives the load information from the load determining means 7 by inputting the load state (step 31). And
By determining the timer interrupt interval value (step 32),
The timer interrupt interval value is determined so that the timer interrupt interval is short when the system load is low, and the timer interrupt interval is long when the system load is high. For example, if a timer interrupt is made at intervals of 0.01 seconds, the timer 8 will be used 100 times per second. However, if the timer interrupt interval value is 10 seconds, the use of the timer 8 per second is reduced to 1/1000, and the load on the system can be reduced.

Next, the timer interrupt interval value determining means 3 causes the timer starting means 4 to operate. The timer starting means 4 is
The timer interrupt interval value is set in the timer 8 by setting the timer interrupt interval value (step 41), and the timer 8 is started by starting the timer 8 (step 42). The timer 8 activated by the timer activation means 4 generates a timer interrupt when the time passes by the timer interrupt interval value.

Therefore, the timer updating means 5 updates the timer management tables 6 (step 51) to convert the timer values 61 of all the timer management tables 6 by the timer interrupt interval value. Further, whether the subtraction result is positive or negative is judged by the positive / negative judgment of the timer value 61 (step 52), and when the timer value 61 is 0 or less, the timer management table 6 is deleted (step 53) to perform the timer management. Table 6 is deleted. Then, the time-out notification process (step 54) notifies the timer-using program 1 of the time-out process program address 62 of the deleted timer management table 6. Further, the timer updating means 5 determines whether or not the timer management table 6 is present (step 55), and then the timer management table 6
Check for. If the timer management table 6 still remains, the timer interrupt interval value determining means 3 is called by calling the timer interrupt interval value determining means 3 (step 56). If the timer management table 6 does not remain, the activation flag is reset by resetting the activation flag (step 57).

As described above, for example, when a large value is set for the timer value 61 in the timer management table 6 or when registration is performed for a large number of timer management tables 6 by a large number of timer utilization programs 1. However, since the timer interrupt interval value determining means 3 determines a timer interrupt interval value that is as large as it is based on the load information of the computer system received from the load determining means 7, the load of the computer system is increased by using the timer 8. Can be prevented.

[0016]

As described above, the timer management system of the present invention has the following effects by determining the timer interrupt interval value based on the load status of the computer system. It is possible to suppress an increase in load on the computer system. The timer can be monitored without problems even when the computer system is under heavy load. There is no need to determine the timer interrupt interval value each time the user uses the timer. Since it is not necessary for the user to determine the timer interrupt interval value each time the user uses the timer, the process can be automated.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a timer management system of the present invention.

FIG. 2 is a flowchart showing an example of the operation of timer requesting means 2.

FIG. 3 is a flowchart showing an example of the operation of the timer interrupt interval value determining means 3.

FIG. 4 is a flowchart showing an example of the operation of the timer starting means 4.

5 is a flowchart showing an example of the operation of the timer updating means 5. FIG.

FIG. 6 is a table layout diagram showing an example of a timer management table 6.

[Explanation of symbols]

 1 Timer Utilization Program 2 Timer Request Means 3 Timer Interrupt Interval Value Determining Means 4 Timer Starting Means 5 Timer Updating Means 6 Timer Management Tables 7 Load Judging Means 8 Timers 9 Timer Management Systems

Claims (1)

[Claims] 1. A timer management table for registering information required when using a timer, a timer requesting means for registering the timer management table, a load determining means for determining a load condition of a system, and the load. Timer interrupt interval value determining means for determining the timer interrupt interval value based on the load information received from the judging means, timer starting means for setting the timer interrupt interval value in the timer to start the timer, and the time of the timer interrupt interval value A timer management system comprising: a timer that generates a timer interrupt after a lapse of time; and a timer updating unit that updates the timer management table and determines whether to continue the timer request again.