JP2001154861A - System and method for asynchronously ending process - Google Patents

Abstract

PROBLEM TO BE SOLVED: To asynchronously end a process by the already existing application process of a computer different from a computer in which a process is operating. SOLUTION: A monitoring thread JLT operating on a process PRS monitors a switch file SWF, and when the switch file SWF is generated, the process PRS is ended. The switch file SWF is generated by an already existing application AP of a computer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a process asynchronous termination system and method for asynchronously terminating a process from outside a process operating on a computer.

[0002]

2. Description of the Related Art In a system operating in a multi-process, it is general that each process communicates with each other using an interrupt function, a message communication function, and the like. For example, JP-A-10-283206
Japanese Patent Application Laid-Open Publication No. H11-163873 proposes a system in which a running process asynchronously executes an interrupt process in response to an interrupt request from another process.

FIG. 3 is a block diagram showing a configuration of a conventional process asynchronous interrupt system described in Japanese Patent Application Laid-Open No. 10-283206. As shown in FIG.
In the computer 100, the operating system 1
01, process A and process B are operating. Process A includes an interrupt processing unit 110 that is executed when an interrupt request from another process is received, and an interrupt processing unit 110 that is executed when the interrupt request is received.
And an interrupt executing means 111 for executing
The process A generates an event object IE in each process common area 120 of the operating system 101 that performs process control in a multi-process environment, and determines whether another process has set the event object IE to a signal state, that is, By monitoring whether an event has occurred, an interrupt request from another process is sensed. Therefore, the process A further includes a monitoring thread IT that monitors an interrupt request and a monitoring thread generating unit 113 that generates the monitoring thread IT. The monitoring thread IT uses the event object I
An event object generating means 114 for generating E;
A request sensing unit 115 is provided for monitoring whether the event object IE is in a signal state and notifying the interrupt execution unit of an interrupt request when the event object IE is detected to be in a signal state. And the process B is the event object I
An event object control program 130 for setting E to a signal state is provided.

In the above-described conventional process asynchronous interrupt system, when a system for terminating process A by an interrupt from process B is constructed, if the process for terminating process A is performed in interrupt processing unit 110, Process A by Process B
Process asynchronous termination system that terminates asynchronously can be constructed.

However, in the above-described conventional process asynchronous termination system, the operating system 101
Since the event object IE existing in each process common area 120 is used as an inter-process interface, the process A is terminated by operating the event object IE from a computer different from the computer on which the process A is operating. It is difficult.

In the above-described conventional process asynchronous termination system, since the event object IE is used as an inter-process interface, each process common area 120 of the operating system 101 is accessed, and the event object IE is transmitted to the process B. The event object control program 130 for setting the signal state is required.

[0007]

The above-described conventional process asynchronous termination system has the following two problems. (1) Since an event object existing in each process common area of the operating system is used as an inter-process interface, it is difficult to terminate the process by operating the event object from a computer different from the computer on which the process operates. It is. (2) Since an event object existing in each process common area of the operating system is used as an inter-process interface, another program accesses each process common area of the operating system in another process and sets the event object to a signal state. Must be designed. SUMMARY OF THE INVENTION It is an object of the present invention to provide a process asynchronous termination system capable of terminating a process asynchronously under control of a computer other than the computer on which the process is running.

Another object of the present invention is to provide a process asynchronous termination system capable of terminating a process asynchronously without designing a program for accessing each process common area of an operating system.

[0009]

In order to solve the above-mentioned problems, the present invention provides a process asynchronous termination system for asynchronously terminating a process operating on a computer. And monitoring thread means for terminating the process when the existence of the predetermined file is confirmed, and monitoring thread generating means for generating the monitoring thread means.

[0010] Further, the predetermined file is accessible from a computer different from a computer on which the process operates, and is generated by the other computer.

In the process synchronization termination system of the present invention,
By making the generation of a predetermined file accessible from two computers a condition for terminating the process, the condition for terminating the process from a computer different from the computer on which the process operates can be set. The process can be asynchronously terminated from a computer other than the computer that performs the process.

Further, in another process asynchronous termination system according to the present invention, the predetermined file is generated by an existing application process.

In the process synchronization termination system of the present invention,
By making the generation of a predetermined file by an existing application process a condition for terminating the process, there is no need to access the process common areas of the operating system to terminate the process. The process can be terminated asynchronously without designing a program to access.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a process asynchronous termination system according to an embodiment of the present invention. As shown in FIG. 1, a process PRS is running on the computer 1, and an existing application process AP is running on the computer 2. The switch file SWF is created on the disk 3 accessible from the computer 1 and the computer 2 by the application process AP. The application process AP is an application process having functions such as a word processor, a text editor, and a database, and may be any existing application process as long as the switch file SWF can be generated. The process PRS is a multi-threaded process. On the process PRS, a monitoring thread JLT for monitoring the switch file SWF and a monitoring thread generating means for generating the monitoring thread JLT include a main thread MT for performing main processing of the process PRS. Is working.

The process asynchronous termination system according to the present embodiment uses an application process AP to execute a process P
This is a system for terminating RS asynchronously. When the application process AP wants to end the process PRS, it creates a switch file SWF on the disk 3. In the process PRS, the monitoring thread JLT monitors the switch file SWF, and the monitoring thread JLT
If it is confirmed that the switch file SWF exists, the monitoring thread JLT forcibly terminates the process PRS.

Next, the operation of the process asynchronous termination system of this embodiment will be described in detail with reference to FIG.
FIG. 2 is a flowchart showing the operation of the process asynchronous termination system of the present embodiment. FIG. 2A is a flowchart showing the operation of the main thread MT.
2B is a flowchart illustrating the operation of the monitoring thread JLT, and FIG. 2C is a flowchart illustrating the operation of the application process AP.

The main thread MT of the process PRS is
First, a monitoring thread JLT is generated (step 100).
1) The original main processing is performed (step 1002).
The monitoring thread JLT waits until the switch file SWF is generated (Step 2001). The application process AP waits until the operator of the computer 2 issues a switch file generation instruction (step 300).
1) If there is an instruction, a switch file SWF is generated (step 3002). When the monitoring thread JLT confirms the existence of the switch file SWF,
S is terminated (step 2002).

As described above, in the process asynchronous termination system according to the present embodiment, since the process termination condition is such that the switch file SWF accessible from both the computers 1 and 2 is generated, the process PRS is transmitted from the computer 2 to the process PRS. Can be terminated asynchronously.

In the process asynchronous termination system of this embodiment, the generation of the switch file SWF by the existing application process AP is set as a condition for terminating the process PRS. Since there is no need to access the common area, the process PRS can be terminated asynchronously without designing a program for accessing each process common area of the operating system.

In the process asynchronous termination system according to the present embodiment, the application process AP is a process operated by the computer 2, but the application process AP may be a process operated by the computer 1.

[0021]

As described above, the process asynchronous termination system of the present invention has the following two effects. (1) By generating a predetermined file accessible from two computers as a condition for terminating the process, a condition for terminating the process from a computer different from the computer on which the process operates can be set. The process can be asynchronously terminated from another computer than the computer on which the process runs. (2) By making the generation of a predetermined file by the existing application process a condition for terminating the process, it is not necessary to access the process common area of the operating system to terminate the process. Even without designing a program to access the common area,
Processes can be terminated asynchronously.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a process asynchronous termination system according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of a process asynchronous termination system according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a conventional process asynchronous interrupt system.

[Explanation of symbols]

 1, 2, 100 Computer 3 Disk 101 Operating System 110 Interrupt Processing Unit 111 Interrupt Execution Unit 113 Monitoring Thread Generation Unit 114 Event Object Generation Unit 115 Request Sensing Unit 120 Common Process Area 130 Event Object Control Program A, B, PRS Process AP Application process IE Event object IT, JLT Monitoring thread MT Main thread SWF Switch file

Claims (6)

[Claims] 1. A process asynchronous termination system for asynchronously terminating a process operating on a computer, wherein the system operates in the process, monitors the presence or absence of a predetermined file, and when the existence of the predetermined file is confirmed, A process asynchronous termination system comprising: a monitoring thread unit for terminating a process; and a monitoring thread generation unit for generating the monitoring thread unit. 2. The process asynchronous termination system according to claim 1, wherein the predetermined file is accessible from a computer different from a computer on which the process runs, and is generated by a process running on the other computer. 3. The file according to claim 1, wherein the predetermined file is generated by an existing application process.
The process asynchronous termination system described. 4. A process asynchronous termination method for asynchronously terminating a process running on a computer, wherein a monitoring thread means generated in the process monitors existence of a predetermined file and confirms existence of the predetermined file. In this case, the process is terminated by the monitoring thread means. 5. The process asynchronous termination method according to claim 4, wherein the predetermined file is generated by a computer different from a computer on which the process operates. 6. The process asynchronous termination method according to claim 4, wherein the predetermined file is generated by an existing application process.