JP3014098B2 - Service provider program destination management mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention includes a destination management list that manages destinations notified from a service providing program, so that a service requesting program can send a destination of a service providing program to a service requesting program. The present invention relates to a service providing program destination management mechanism that performs a notification process.

For example, in a message-based operating system, a service request program receives a service by transmitting a service request message to a service providing program. like this,
In a data processing system in which the service request program receives the service from the service providing program, the service receiving program is a processing reception port of the service providing program so that the service request program can call the service providing program. It is necessary to provide a destination management mechanism for managing destinations. This destination management mechanism needs to be configured so that the processing load of the service request program does not increase and that the service request program can receive more appropriate services.

[Conventional technology]

In the related art, when a service providing program is started by a system operator or the like via a service providing program starting mechanism, the started service providing program performs processing to register its own destination in the destination management mechanism. Then, the service request program requiring the service requests the destination of the service providing program by referring to the destination registered in the destination management mechanism, and transmits a service request message to the determined destination. Therefore, the service was processed to receive the service. That is, in the related art, the process of registering a destination in the destination management mechanism is executed without relation to the destination reference process of the service request program. The process of registering a destination in the destination management mechanism has been performed, for example, at the time of initial program loading, in addition to when a command is input by a system operator or the like.

[Problems to be solved by the invention]

As described above, in the related art, the synchronization between the destination registration processing to the destination management mechanism and the destination reference processing of the service request program is not performed. When it happens, it happens that the destination has not been registered yet. In such a case, in the related art, the service request program waits for activation of the service providing program while performing timer monitoring and the like.

However, in this case, there is a problem that the service request program has to interrupt its own processing and also has to perform timer monitoring or the like, so that the processing load increases.

The present invention has been made in view of such circumstances,
By ensuring that the destination of the service providing program is obtained when the service requesting program is requested, the service requesting program can receive a more appropriate service without increasing the processing load of the service requesting program. To provide a new service providing program destination management mechanism.

[Means for solving the problem]

 FIG. 1 is a diagram illustrating the principle of the present invention.

In the figure, 10 is a service providing program that provides a predetermined service, 20 is a service request program, which requests the service providing program 10 to provide a service, and 30 is a destination management mechanism. In addition, it registers and manages a destination that is a processing reception port of the service providing program 10. Reference numeral 11 denotes a destination registration unit included in the service providing program 10, which registers its own destination in the destination management mechanism 30 at the time of starting the program. Reference numeral 21 denotes a service request detecting unit included in the service request program 20, and A device for detecting the occurrence of a request, 22 is a destination reference means provided in the service request program 20, which refers to a destination of the service providing program 10 registered in the destination management mechanism 30, and 23 is a device for the service request program 20. Service request means provided,
A service request to the service providing program 10, 31 is a destination management book provided in the destination management mechanism 30 for registering and managing the destination of the service providing program 10 notified from the destination registration means 11, Reference numeral 32 denotes a registration presence / absence determining means provided in the destination management mechanism 30.
33 is a service providing program starting means provided in the destination managing mechanism 30 for activating the service providing program 10, and 34 is a notifying means for determining whether or not the destination of the service providing program 10 is provided. Is notified to the service request program 20.

[Action]

In the present invention, when the service request detection unit 21 detects the occurrence of the service request, the destination reference unit 22 starts the registration presence / absence determination unit 32. At this time, the destination reference means 22 specifies whether to request the activation of the service providing program 10.

When activated in this way, the registration presence / absence determining means 32
Determines whether the destination of the service providing program 10 is registered in the destination management book 31.

In this determination, when it is determined that the destination of the service providing program 10 is not registered, and the destination reference unit 22 does not request the activation of the service providing program 10, the notifying unit 34 sends the service providing program 10 Is notified to the destination reference means 22.

On the other hand, when it is determined that the destination of the service providing program 10 is not registered,
Requesting the activation of the service providing program 10, the registration presence / absence determining means 32 performs processing to activate the service providing program activating means 33. By starting the service providing program starting means 33, the destination of the service providing program 10 is registered from the destination registering means 11 to the destination management book 31, so that the notifying means 34 Processing is performed to notify the destination reference means 22. On the other hand, when it is determined that the destination is registered,
The notifying unit 34 performs processing to immediately notify the destination reference unit 22 of the destination registered in the destination management book 31. When the destination of the service providing program 10 is notified to the destination reference unit 22, the service request unit 23 transmits a service request message to the destination. As a result, the service request program 20 can immediately receive the service of the service providing program 10.

As described above, according to the present invention, when the destination of the service providing program 10 is not registered, the destination can be obtained by activating the service providing program 10, so that when the service requesting program 20 makes a request, Immediately, the destination of the service providing program 10 is obtained.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to examples.

FIG. 2 shows a system configuration diagram of the present invention. The server 10a corresponding to the service providing program 10 in FIG.
For example, it is a program that provides a predetermined service, such as providing a mechanism for accessing DASD or providing a mechanism for collectively managing events that occur in the system. A plurality of servers 10a are provided for each service to be provided. As shown in the figure, a destination management mechanism 30 of the present invention
a "destination management function" for managing the destination information of the processing reception port of "a", a "server start function" for starting the server 10a, and a destination management book 3 for storing the destination information of the server 10a
1 is provided. When the service request program 20 of the present invention refers to the destination with respect to the destination management mechanism 30, the "server start function"
Is configured to perform the mode designation of “activation designation” for designating whether or not to operate. The “□” marks in the server 10a, the service request program 20, and the destination management mechanism 30 indicate ports for receiving processing of each program.

Next, the processing contents of the present invention will be described with reference to the flowchart shown in FIG. 3 executed by the destination management mechanism 30. Here, this flowchart is executed when the service request program 20 needs to process the program provided by the server 10a and makes a destination reference request to the destination management mechanism 30.

When there is a reference request from the service request program 20,
The destination management mechanism 30 first, as shown in step 1,
In order to search for the destination of the server 10a for which reference has been requested, the search of the destination management book 31 is started. Subsequently, in step 2, it is determined according to the search whether a destination is registered. Here, the fact that the destination is not registered means that the server 10a has not been started yet. From now on, when it is determined in step 2 that the destination is unregistered, the process proceeds to step 3,
The “start specification” mode, which is specified at the same time as the reference request, is checked. If it is determined in step 3 that there is "start designation", the process proceeds to step 4 to process the service request program 20 to start the server 10a that is required. Process to wait for the destination of 10a to be registered.

The server 10a started in this manner, as in the prior art, as a part of the initialization processing, stores the destination of its own process reception port (indicated by "cap1" in FIG. 2) in the destination management mechanism 30. Process to notify. From now on, the destination management mechanism 30 that is waiting according to step 5 registers the destination of the server 10a notified in this way in the destination management book 31, and proceeds to step 6 to store the registered destination. Processing is performed to notify the service request program 20. By this notifying process, the service request program 20 obtains the destination of the server 10a. By transmitting the service request message to the destination, the service of the server 10a can be received.

The processing procedure described above will be indicated by symbols in the drawings. Is a destination reference request processing to the destination management mechanism 30, is a destination registration presence / absence determination processing, is a server start processing due to no destination registration, and is a started server 10a.
Is a destination notification process to the service request program 20, and a process of transmitting a service request message to the server 10a.

On the other hand, when it is determined in step 2 that the destination of the server 10a has been registered, the server 10a has already been activated, and thus the process in step 3 to step 5 is not executed, and the process immediately proceeds to step 6. Advance,
The registered destination is notified to the service request program 20. On the other hand, when it is determined in step 3 that there is no “start designation”, the process proceeds to step 7, where processing is performed to notify the service request program 20 that the destination has not been registered. Upon receiving the notification of the unregistered destination, the service request program 20 waits for the activation of the service providing program while monitoring the timer as in the related art.

Note that the “server start function” of the destination management mechanism 30
In addition to the activation of the server 10a, the server 10a is also activated when a predetermined condition such as a command input by a system operator or an initial program loading is satisfied as in the related art.

In order to clarify the difference between the configuration of the present invention and the configuration of the prior art, the configuration of the prior art is shown in FIG. In the drawings showing the processing procedure, in the figure, server start processing by the server start mechanism, destination registration processing by the started server 10a, destination reference request processing to the destination management mechanism 30 and destination notification processing of the response, It shows a process of transmitting a service request message to the server 10a. As shown in the figure, in the prior art, the server start-up mechanism that executes the server start-up function is a destination management mechanism 30.
And it was configured to be provided separately. Therefore, when the destination of the server 10a is not registered in the destination management mechanism 30, the service request program 20 has only to wait until the server activation mechanism operates.

〔The invention's effect〕

As described above, according to the present invention, the destination of the service providing program can always be obtained when the service is requested by the service request program. Thus, in the service request program, more appropriate service can be received without waiting time, and error processing at the time of referring to the destination need not be considered, so that the processing load can be reduced. In addition, since the destination reference function and the server start function are realized in the same mechanism, even if a plurality of destination reference requests are made to unregistered destinations at the same time, the server is started. By synchronizing the processing with the destination notification processing, it is possible to cope with the inconsistency.

[Brief description of the drawings]

FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is a block diagram of the present invention, FIG. 3 is a flowchart executed by a destination management mechanism, and FIG. In the figure, 10 is a service providing program, 11 is a destination registration unit, 20 is a service request program, 21 is a service request detection unit, 22 is a destination reference unit, 23 is a service request unit, 30
Is a destination management mechanism, 31 is a destination management book, 32 is a registration presence / absence determining means, and 33 is a service providing program starting means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-211035 (JP, A) JP-A-61-59550 (JP, A) JP-A-57-114960 (JP, A) JP-A 61-59 239354 (JP, A) Paul J. et al. Fortier, Author, Kuroda, Iwamoto, Translated, "Design of Distributed Operating System", published by Nikkei BP (July 1, 1988, first edition), pp. 171-174. Vasudevan, "Designing Name Servers for Distributed System", Proc. IEEE Real Time System Symp, 1984, p. 28-35 (JICST document number A0995B). Larry L. Peterson, "A Yellow-Pages Service for a Local-Area Network", Comput. Commun. Rev .. , Vol. 17, No. 5, 1987, p. 235-242 (JICST Material No. C0877A). (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 9 / 46,15 / 16 G06F 13 / 00,9 / 44 G06F 9 / 06,9 / 40 , 15/00 JICST file (JOIS) CSDB (Japan Patent Office)

Claims (1)

(57) [Claims] 1. A service providing program destination management mechanism for performing a process of notifying a service requesting program of a destination of a service providing program by providing a destination management book for managing a destination notified from the service providing program. Determining means for determining whether or not the destination of the service providing program specified by the service request program is registered in the destination management book when the destination notification request is generated; and the determining means determines that the destination is not registered, and A service request program that is activated when instructed to be activated and activates a service providing program specified by the service request program, thereby registering an address of the service providing program in a destination management list; When deciding on registration, When the service request program of the issuer of the notification request is notified, the determining means determines that the service request program has not been registered, and the service request program instructs the activation of the activation means, it is registered in the destination management book by the activation means. Notify the service request program of the destination notification request issuer of the destination of the service providing program to be
Notification means for notifying the service request program of the destination notification request issuer that the destination has not been registered when the determination means determines that registration has not been performed and the service request program does not instruct activation of the activation means. A service providing program destination management mechanism.