JPH04257140A - Control system for communication between service processes - Google Patents

Abstract

PURPOSE:To improve the performance of the function of communication service by managing detailed information related to a service process of the other party and a communication means not by a service management part but by a communication control part with respect to communication between service processes. CONSTITUTION:Relation information between the service process of the originating source and the service process of the terminating destination in another computer and the address of the service process of the terminating destination are managed by a communication control part 3. Thus, a service management part 2 performs communication between service processes in local or plural computers without paying attention to the address of the service process of the other party. The control part 3 transmits a message after starting the service process of the other party if the other party of the transmission destination is not started, and the management part 2 performs communication without paying attention to the presence or the absence of the service process of the transmission destination.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control method between service processes when various communication services are provided between a plurality of computers connected to a communication system. In recent years, it has become possible to provide a wide variety of advanced communication services by connecting multiple computers to a communication system and controlling various communication services with each computer. In such a communication system, in order to perform competitive control and parallel operations between individual service processes existing in a single or multiple computers, it is required that all related service processes be able to communicate.

[0002] Therefore, within each computer, it is necessary to perform communication control between service processes that flexibly corresponds to the configuration and state of the network.

0003

20 is a block diagram showing the configuration of one computer in a conventional service inter-process communication system. In the figure, a conventional computer 20
0 is a service management unit 201 that manages service processes
, a service process group 202 consisting of a plurality of service processes, and a communication control unit 203 that controls communication with external computers within this network. Each service process has message destination information for service processes in the same computer, message destination information for service processes in other computers, where the other service process is located, and what communication method is required. This is realized by executing the program by the CPU using the relationship information between service processes for notifying the service management unit 201 of detailed information and means such as whether the program is being executed or not.

FIG. 21 is a flowchart illustrating the operation of the conventional service inter-process communication system shown in FIG. As shown in this flowchart, when various communication services are provided between multiple computers connected to a conventional communication system or within the same computer, the address of the other service process is used for communication between service processes. Communication was performed by specifying the message destination for each service process.

However, in this conventional method, when performing communication between service processes, the communication destination of the message is specified for each service process and sent. It is necessary for each service process to have detailed information and means regarding relationship information between service processes, such as whether a communication means is required.

[0006] Furthermore, when changing the network configuration, such as adding or deleting computers in the network, in order to communicate with service processes in other computers, it is necessary to change the address of the other service process and the message destination. Because it was necessary to make additional changes to the service, it was necessary to add and update the information in all service processes each time there was a change.

[0007]

[Problem to be Solved by the Invention] Therefore, in the above-mentioned conventional method, each service process and service management section must have information on the other service process and communication means regarding communication between service processes; Therefore, there are problems in that the amount of program description increases and the program becomes more complex.

[0008] Furthermore, each service process must manage information on the other service process, and if there is a change in the relationship between the own service process and the other service process, all related services There is also the issue of additional changes to the process. Furthermore, if the accommodation location of these service processes changes or the configuration of the network changes, there is a problem in that the information on the service process that is the communication partner must be updated each time.

[0009] Regarding communication between such service processes, the present invention allows detailed information regarding the other service process and communication means to be managed not by a service management unit but by a communication control unit, thereby improving service management. The communication control unit communicates without being aware of the detailed information of the other process, and the communication control unit also provides inter-service process relationship information, which is necessary when performing inter-service communication across multiple computers. The purpose of this project is to automatically update services using messages from the outside, to easily control competition between multiple services and to perform parallel processing, and to provide a more advanced communication method between service processes.

0010

Means for Solving the Problems FIGS. 1 and 2 are block diagrams illustrating the principle of the present invention. A service process communication system according to an aspect of the present invention includes a computer 1-1 connected to a communication system, and the computer 1-1 includes a service management unit 2 that manages a plurality of types of one service process, and a service management unit Communication that manages relationship information between the source and destination service processes and the address of the destination service process according to the type of the message source service process and the message destination service process, which are instructed from 2. Control part 3
The service management unit 2 is characterized in that it performs communication between service processes within the computer without being aware of the address of the destination service process.

The service inter-process communication system according to the second aspect of the present invention includes a plurality of computers 1-1, 1-2, . . . , 1-n connected to a communication system, and each computer has a plurality of A service management unit 2 that manages service processes of various types, and a service process that is a source of a message and a service process that is a destination of a message as instructed by the service management unit 2. The service management unit 2 is equipped with a communication control unit 3 that manages relational information between the service process of the computer and a destination service process in another computer, and the address of the destination service process. The feature is that communication between service processes is performed without being aware of the address of the other service process.

The service inter-process communication system according to the third aspect of the present invention includes a plurality of computers 1-1, 1-2, . . . , 1-n connected to a communication system, and each computer has a plurality of A service management unit 2 that manages service processes of various types, and a service process that is a source of a message and a service process that is a destination of a message as instructed by the service management unit 2. The communication control unit 3 is equipped with a communication control unit 3 that manages relationship information between the service process of the service process and a destination service process in another computer and the address of the destination service process, and the communication control unit 3 manages messages from outside. It is characterized by additionally updating related information related to a computer other than the own computer in accordance with the current computer.

The service inter-process communication system according to the fourth aspect of the present invention includes a plurality of computers 1-1, 1-2, . . . , 1-n connected to a communication system, each of which has a A service management unit 2 that manages multiple types of service processes, and a service management unit 2
Depending on the service process type of the service process that is the source of a message and the service process that is the destination of the message, the service process of the source in the own computer and the destination service process in another computer are The communication control unit 3 includes a communication control unit 3 that manages relational information between the computers and the address of the destination service process, and the communication control unit 3 adds relational information related to a computer other than its own computer based on a predetermined schedule. It is characterized by updating.

The service inter-process communication system according to the fifth aspect of the present invention includes a plurality of computers 1-1, 1-2, . . . , 1-n connected to a communication system, and each computer has a plurality of A service management unit 2 that manages service processes of various types, and a service process that is the source of a message and a service process that is the destination of the message, and that are configured to send messages within its own computer according to the service process type of the service process that is the source of the message and the service process that is the destination of the message, as instructed by the service management unit 2. The communication control unit 3 is equipped with a communication control unit 3 that manages relational information between the original service process and a destination service process in another computer and the address of the destination service process, and the communication control unit 3 manages related messages. If the destination service process is not started, the message is sent after starting the service process, and the service management unit 2 performs communication without being aware of the presence or absence of the destination service process. shall be.

[0015]

[Operation] The communication control unit 3 transmits the relationship information between the originating service process and the destination service process in another computer and the address of the destination service process.
As a result, the service management section 2 can perform communication between service processes within its own computer or within a plurality of computers without being aware of the address of the other service process. In addition, the communication control unit 3 additionally updates related information related to a computer other than its own computer in response to a message from the outside, and if the service process of the related message destination is not activated. Then, after activating the service process, the message is sent, and the service management unit 2 can communicate without being aware of the presence or absence of the destination service process. Furthermore, the service management section 2
Communication can be performed without being aware of the presence or absence of the destination service process.

[0016]

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2 again. FIG. 1 is a block diagram showing an example of the configuration of a service process in each computer and the configuration of a communication control unit 3, and FIG. 2 is a diagram showing a computer network according to an example of the present invention, which is connected to an exchange. A variety of service processes exist in each of the multiple computers 1-1 and 1-2 connected to the computer 1-1 and the computer 1-n connected to these computers via an information transmission line. It is assumed that various communication services are provided to the users.

In the embodiment of the present invention, as shown in FIG. 2, an exchange 12 and user terminals 11-1, 11- to which user terminals 10-1, 10-2, .
By a plurality of computers 1-1, 1-2, ..., 1-n connected directly or indirectly to a communication system, which is an exchange 13 to which computers 2, ..., 11-q are connected,
Provides various communication services. In this case, in each computer, as shown in FIG. 1, a service management unit 2 that manages a group of service processes manages multiple types of service processes such as service process*, service process #, and service process $. A plurality of the same service processes may exist for each type of service process. In FIG. 1, for example, the group of service processes* consists of four service processes. The communication function between these service processes is controlled by the communication control unit 2.
It is separated from the communication control unit 3 and held in the communication control unit 3. In addition, each service management unit 2 sends a message to this communication control unit 3 when there is a message to be sent to another service process in the same computer or a service process managed by a service management unit in another computer. request that the message be sent.

According to the first aspect of the embodiment of the present invention, the communication control unit 3 includes a memory 4 existing in the computer that stores message destination information for each service process, and a memory 4 that stores message destination information for each service process. It has a memory 5 for storing related information, a data search section 6 for searching this information, a message analysis section 7 for analyzing the source/destination of the received message, and a service process management section for each service process. When a request to send a message is received from 2, the message analysis unit 7 detects the sender and destination of the message, and identifies the destination that is related to the detected service process of the sender. Search for a service process from the memory 5 that stores relationship information between service processes, then search for a message destination from the memory 4 that stores message destination information for each service process, and send the message to the corresponding destination. I try to do that.

Therefore, each service process in its own computer and the service management section 2
Even when a plurality of the same service processes exist in one service process, message communication between service processes is possible without being aware of which service process the service process is related to. According to a second aspect of an embodiment of the invention:
The communication control unit 3 exists in another external computer,
A memory 8 that stores information on the destination of a message to a service process of a service that does not exist within the own computer, and a memory 4 that stores relationship information between the service process within the own computer and the service process that exists outside of the own computer. , a data search unit 6 that searches for this information, and a message analysis unit 7 that detects the destination and destination of the message when a message transmission request is received from each service process or the service management unit 2,
A destination process related to the source process detected by the message analysis unit 7 is searched from the memory 5 that stores relationship information between service processes, and the destination service process is found in the own computer. If not, the memory 8 that stores message destination information for a service process of a service that does not exist in the computer is searched, and the message is sent to the corresponding destination service process.

Therefore, even when each service process or the service management unit 2 exchanges messages with a service process that is not in the computer, message communication between service processes is performed without being aware of the location of the other service process. It can be carried out. Further, even if the location of the service process is changed to somewhere on the network due to a change in the system configuration, communication between the service processes is possible without any change in the service process or the service management unit 2.

According to the third aspect of the embodiment of the present invention, the communication control section 3 has a data management section 9 that manages information handled by the communication control section 3, and sends messages to each service process. If we receive a request for changes or additions to information such as the destination and relationship information between service processes, the destination of messages to the service process of a service that does not exist on the own computer, and other addresses on the computer's network. allows for data changes and additions to be made to these contents.

[0022] Therefore, when the network configuration is changed, the location of a service process is changed, or a new service process is added, the computer where the change occurred or the center that manages the entire network Therefore, this information can be updated simply by issuing a data update request to the communication control unit 3 in the related computer.

According to the fourth aspect of the embodiment of the present invention, the data management unit 9 is provided with a timer function, and the timer can be used to trigger the update of information. Therefore, information can be updated based on a schedule. According to the fourth aspect of the embodiment of the present invention, the communication control unit 3 includes a memory 4 that stores message destinations for each service process, which is present in the computer that includes the communication control unit 3, and a memory 4 that stores message destinations for each service process. It has a memory 5 that stores relationship information between processes, a data search unit 6 that snoops on this information, a message analysis unit 7 that analyzes the destination/source of a received message, and a process startup unit 14. . When the communication control unit 3 receives a message transmission request from each service process or the service management unit 2, the message analysis unit 7 detects the destination of the call that is related to the originating service process. If the service process does not exist in either of the memories 4 and 8 as a result of the search by the data search unit 5, a startup request for the destination service process is first issued to the process startup unit 14, and the service process is started. The information about the service processes that have been sent is added to the memory 5 that stores relationship information between service processes, and the memory 4 or 8 that stores message destination information for each service process, and then the message is sent to the service process. I have to.

Therefore, each service process and the service management unit 2 can communicate messages related to the service process without being aware of the presence or absence of service processes related to it. FIG. 3 is a diagram showing an example of relationship information between service processes provided for users. In the figure, for example, service flowcharts that can be provided to user 1 include a service A process, a service B process, a service C process, etc.
Their process identification numbers are A-001 and B-001.
, C-001, and the housing locations are the own computer, the own computer, and other computers, respectively. These inter-process relation information are stored in the service inter-process relation information memory 5 in FIG. 1 in each computer.
is stored in

FIG. 4 is a diagram showing an example of message destination information for a service process within the own computer, which is stored in the message destination information storage message 4. In the same figure, the service A process has a process identification number A-001 corresponding to each user terminal.
, A-002, A-003, ..., and the message destination addresses from each service process are Message Queue > 101, Message Queue > 102, Message Queue >
103, . . . are stored in association with each other. In addition, the service B process also has process identification numbers B-001, B-002, and B-003 corresponding to each user terminal.
,..., and the message destination address from each service process is message Q.
queue >201, message queue >202
, message Queue >203, . . . are stored in association with each other.

FIG. 5 is a diagram showing an example of the location of memory destination information for the service C process, which is stored in the memory 8 that stores message destination information for service processes in other computers. In the figure, service C processes have process identification numbers C-010, C-011, C-020, . . . corresponding to each user terminal.
The identification numbers of the computers in which the respective service processes are housed are Computer 2, Computer 2, Computer 3, ...
, and the message destination addresses from each service process are ※※※01, ※※02, ###0
1,...

FIG. 6 is a flowchart illustrating the operation of the communication control unit 3 in the first to fifth aspects of the above embodiment of the present invention. In the figure, when a message transmission request is made while waiting for an event, the message analysis section 7 is requested to analyze the source/destination of the message. Then, when the analysis result of the message source/destination is notified, processing A shown in FIG. 7 is performed. If there is no request to send a message, but there is a request to update internal information, processing B shown in FIG. 10 is executed. If there is no update request for internal information, the above operation is repeated until the timer expires, and when the timer expires, processing C shown in FIG. 11 is executed.

In process A of FIG. 7, it is determined whether or not the destination service process exists in the service process related information storage memory 5 in the own computer, and if it exists, the destination is the service process on the own computer. If the destination is a process, processing D shown in FIG. 8 is executed, and if the destination is a service process on an external computer, processing E shown in FIG. 9 is executed. If the destination service process does not exist in the memory 5, a service flowchart activation request is issued to the process activation unit 14. Next, when the startup of the service process is completed, the data management section 9
(see FIG. 1), issues a request to update the service process relationship information, and issues a message destination information update request. When the information update is completed, if the destination is a service process on the own computer, process D shown in FIG. 8 is executed, and if the destination is a service process on an external computer, process E shown in FIG. 9 is executed. Execute.

In process D of FIG. 8, when the destination is a service process on the own computer, a message destination information search request for the service process is issued to the data search unit 6, and then A message transmission request is issued to the message transmission unit 15 to the process (see FIG. 1), and the process returns to the event waiting state Z in FIG.

In the process shown in FIG. 9, when the destination is a service process on an external computer, a message destination information search request for a service process in another computer is issued to the data search unit 6, and then Message sending unit 16 to a process on the computer (
(see FIG. 1), and returns to the event waiting state Z in FIG.

In process B of FIG. 10, when there is a request to update internal information, if there is a time constraint condition, the process returns to the event waiting state Z after issuing the timer setting request, and if there is no time constraint condition, the process returns to the event waiting state Z. , issues an internal information update request to the data management unit 9, and returns to event waiting state Z. In process C of FIG. 11, when the timer expires, an internal information update request is issued to the data management unit 9, and the process returns to event waiting state Z.

FIG. 12 is a flowchart illustrating the operation of the message analysis section 7. In the figure, first the format of the received message is analyzed, then the source service process of the message is detected, then the destination service process of the message is detected, and finally the detection result is notified to the communication control unit. FIG. 13 is a flowchart illustrating the operation of the timer section. In the figure, first, a timer expiration time is set, and then, when the set time comes, a notification of timer expiration is sent.

FIG. 14 is a flowchart explaining the operation of the message transmitting section 15 (see FIG. 1) to the process on the own computer, and FIG. 15 is a flowchart explaining the operation of the message transmitting section 16 to the process on the external computer. FIG. 16, which is a flowchart, is a flowchart illustrating the operation of the data management section 9. In the same figure,
The data management unit 9 determines whether the internal information update request shown in FIG. Each service process is updated in response to a request to update transmission information to the service process.

FIG. 17 is a flowchart illustrating the operation of the data search section 6. In the figure, the data search unit 6
When searching for relationship information between service processes, detects the destination service process ID related to the source service process and the identification number of the accommodated computer, and sends the message destination information to the service process in the own computer. In the case of searching for information on message destinations and detecting message destination information for service processes in other computers, searches are performed in accordance with each search.

FIG. 18 is a flowchart illustrating the operation of the process starting section 14. In the figure, a specified service process is first started, and when the start is completed, information regarding the started service process is sent to the data management unit 9.
to notify. FIG. 19 is a flowchart illustrating the operation of the service management section 2. In the figure, when the service management unit 2 receives a request to send a message from one service process to another, it sets its own user name and service process in the message, and then sets the destination address in the message. Set the service process name. Then, this message is sent to the communication control section 3. In this way, the service management unit 2 only needs to specify the name of the service process of the destination without being aware of the address of the service process of the destination.

Next, embodiments of the present invention will be explained in more detail. Now, in FIG. 2, assume that user terminal 10-1 connected to exchange 12 uses services A and B in computer 1-1 and service C in computer 1-2, respectively. (1) Here, if there is a message that the service A process wants to send to the service B process, each of the service processes in the service B process sends a message to one user, as shown in FIG. Suppose that the computer is assigned one by one, and that there are multiple copies in the computer. In the service management unit 2, the service A process simply specifies to the communication control unit 3 which service B process it is.
Issues a transmission request as a message to the service process B process. Upon receiving this message, the communication control unit 3 analyzes the transmission destination of this device, searches for the transmission destination associated with the service A process that is the transmission source, and transmits the message thereto. (2) Also, assume that there is a message that the service B process wants to send to the service C process.

In this case, as shown in FIG. 2, the service C process is not located on the computer 1-1 where the service B process is located, and is located on multiple computers on the network (in the figure, computers 1-2 and 1-1). n
). The service B process, which is the source, simply issues a transmission request to the communication control unit 3 as a message to the service C process, without specifying on which computer the service C process is located. Communication control unit 3 that received this
Now, we will analyze the source and destination of this message, search for the service C process on another computer that is related to the service B process that is the sender, and search for the message destination for that service C process. and send this message there. (3) Service D is newly added to computer 1-2, and at this time, a request to add and update message destination information to the service process is sent from computer 1-2 or the center managing the network to the related computer. Suppose that the message is sent to the communication control unit of .

In this case, the communication control unit 3 that has received this message issues a request to update the message destination information to the data management unit 9, and adds the message destination information to the service process based on the information. Update. (4) Also, as in (3), it is known in advance that a new service will be added to computer 1-2,
At this time, assume that the computer 1-2 or the center managing the network sends a time-limited additional update request for message destination information to the service process to the communication control unit 3 of the related computer.

In this case, the communication control unit 3 that has received this message first issues a trigger generation request to the timer unit 17 to raise the trigger at that time. Thereafter, a trigger is generated by the timer section 17 at the set time, and when this is detected, a request to update the message destination information is issued to the data management section 9, and based on that information, the message destination information is updated. Update message destination information. (5) Furthermore, assume that there is a message that the service A process wants to send to the service E process.

In this case, it is assumed that the service E process is not related to the service A process, as shown in FIG. Here, the service A process simply issues a transmission request to the communication control unit 3 as a message to the service E process, without being aware of whether or not the service E process is associated with it. . The communication control unit 3 that receives this message analyzes the sender and destination of this message, and
It detects that the service E process is not associated with the service A process that is the source of the request, first issues a startup request for the service E process to the process startup unit 14, and after completing the startup of the service E process, Send a message.

[0041] In the above embodiment, relationship management between processes deals with users, but it may also deal with service processes that play a central role in performing services. Further, the information regarding the process may be updated so that the message destination information is switched depending on the time zone based on the schedule. Furthermore, if there is no related process, a process startup request may be issued to an external computer.

[0042]

As explained above, according to the present invention, regarding communication between service processes, detailed information regarding the other service process and communication means are not managed by the service management unit but by the communication control unit. By managing this, it becomes possible to communicate without the service management unit being aware of any detailed information about the other party's process. In addition, in this communication control unit, necessary when performing communication between service processes that spans multiple computers.
It becomes possible to automatically update the relationship information between service processes using a message from the outside. Therefore, competition control among multiple services and parallel processing are easily executed, and a more advanced service process communication method is provided. In other words, not only can the handling of a message be determined based on the content of the message sent from a service process, but also the message can be used not only as a medium for information transmission, but also as a trigger for various linked services. The performance of the function is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating the principles and embodiments of the present invention.

FIG. 2 is a block diagram of a communication system to which principles and embodiments of the present invention may be applied.

FIG. 3 is a diagram showing relationship information between service processes according to an embodiment of the present invention.

FIG. 4 is a diagram showing destination information for a service process within the own computer according to the embodiment of the present invention.

FIG. 5 is a diagram showing destination information for a service process in another computer according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating the operation of the communication control unit according to the embodiment of the present invention.

FIG. 7 is a flowchart illustrating details of process A in FIG. 6 according to the embodiment of the present invention.

FIG. 8 is a flowchart illustrating details of process D in FIG. 6;

FIG. 9 is a flowchart illustrating details of processing E in FIG. 7;

FIG. 10 is a flowchart illustrating details of process B in FIG. 6;

FIG. 11 is a flowchart illustrating details of process C in FIG. 6;

FIG. 12 is a flowchart illustrating the operation of the message analysis unit according to the embodiment of the present invention.

FIG. 13 is a flowchart illustrating the operation of the timer unit according to the embodiment of the present invention.

FIG. 14 is a flowchart illustrating an operation of sending a message to a process on the own computer according to an embodiment of the present invention.

FIG. 15 is a flowchart illustrating an operation of sending a message to a process on another computer according to an embodiment of the present invention.

FIG. 16 is a flowchart illustrating the operation of the data management unit according to the embodiment of the present invention.

FIG. 17 is a flowchart illustrating the operation of the data search unit according to the embodiment of the present invention.

FIG. 18 is a flowchart illustrating the operation of the process startup unit according to the embodiment of the present invention.

FIG. 19 is a flowchart illustrating the operation of the service management unit according to the embodiment of the present invention.

FIG. 20 is a block diagram showing the configuration of a conventional computer.

FIG. 21 is a flowchart illustrating the operation of a conventional service management unit.

[Explanation of symbols]

1-1, 1-2,..., 1-n...Computer 2...Service management unit 3...Communication control unit 4...Memory for storing message destination information for service processes in the own computer 5...Memory for storing information on relationship between service processes 6...Data search unit 7...Message analysis unit 8...Memory for storing message destination information for service processes in other computers 9...Data management unit 10-1, 10-2,..., 10p...User terminal 11-1
, 11-2,..., 11q...User terminals 12, 13...Exchange 14...Process starting section 15...Message sending section 16 for processes on own computer...Message sending section 17 for processes on external computer...Timer section

Claims (5)

[Claims] Claim 1: A computer (1-1) connected to a communication system, the computer (1-1)
is a service management unit (2) that manages multiple types of service processes, and a service process that is a source of a message and a service process that is a destination of a message that is instructed by the service management unit (2). a communication control unit that manages relational information between the service process of the originator and the destination, and the address of the service process of the destination;
3), wherein the service management unit performs inter-service process communication within the computer without being aware of the address of the destination service process. Claim 2: A computer comprising a plurality of computers (1-1, 1-2,..., 1-n) connected to a communication system,
Each of the computers includes a service management unit (2) that manages a plurality of types of service processes, and a service process that is a source of a message and a service process that is a destination of a message that are instructed by the service management unit (2). A communication control unit (3) that manages the relationship information between the source service process in its own computer and the destination service process in another computer and the address of the destination service process according to the process type. A method for controlling communication between service processes, characterized in that the service management unit performs communication between service processes in the plurality of computers without being aware of the address of the other service process. 3. A computer comprising a plurality of computers (1-1, 1-2,..., 1-n) connected to a communication system,
Each of the computers includes a service management unit (2) that manages a plurality of types of service processes, and a service process that is a source of a message and a service process that is a destination of a message that are instructed by the service management unit (2). A communication control unit (3) that manages the relationship information between the source service process in its own computer and the destination service process in another computer and the address of the destination service process according to the process type. 1. A service inter-process communication control method, characterized in that the communication control unit additionally updates related information related to a computer other than its own computer in response to a message from the outside. 4. A computer comprising a plurality of computers (1-1, 1-2,..., 1-n) connected to a communication system,
Each of the computers includes a service management unit (2) that manages a plurality of types of service processes, and a service process that is a source of a message and a service process that is a destination of a message that are instructed by the service management unit (2). A communication control unit (3) that manages the relationship information between the source service process in its own computer and the destination service process in another computer and the address of the destination service process according to the process type. A communication control method between service processes, comprising: a communication control unit that additionally updates related information related to a computer other than its own computer based on a predetermined schedule. 5. A computer comprising a plurality of computers (1-1, 1-2,..., 1-n) connected to a communication system,
Each of the computers includes a service management unit (2) that manages a plurality of types of service processes, and a service process that is a source of a message and a service process that is a destination of a message that are instructed by the service management unit (2). A communication control unit (3) that manages the relationship information between the source service process in its own computer and the destination service process in another computer and the address of the destination service process according to the process type. The communication control unit transmits the message after activating the service process of the related message destination when the service process of the destination is not activated, and the service management unit transmits the message to the destination service. A service inter-process communication control method characterized by communication without being aware of the presence or absence of processes.