JP6728773B2 - Information processing system, information processing device, exclusive control device, information processing method, exclusive control method, and program - Google Patents

Description

The present invention relates to information processing, and more particularly, to an information processing system, an information processing device, an information processing method, and a program that manage resources.

The information processing device included in the information processing system operates using resources included in the information processing system. The resources include resources shared by a plurality of information processing devices.

When a plurality of information processing devices simultaneously update a shared resource (file or database etc.) for storing data, the consistency of the data of the shared resource is lost. Alternatively, if another information processing device updates the data while one of the information processing devices is referring to the shared resource, the data consistency is lost. As described above, if the update of data in the shared resource is not managed, the consistency of the data in the shared resource is lost.

Therefore, in order to protect the data of the shared resource, the information processing system generally uses an exclusive control device for managing the shared resource (for example, refer to Patent Document 1).

When using a shared resource, the information processing apparatus acquires an access right to the resource from the exclusive control device before accessing the resource. Then, the information processing device uses the resource for which the access right is acquired.

Generally, there are two types of access rights to resources.

The first access right is an access right when referring to resource data (when data is not updated). The first access right is called a "reference right". The information processing apparatus that has acquired the reference right cannot update the data of the shared resource.

The second access right is an access right for updating the resource data. The second access right is called the "update right". The information processing apparatus that has acquired the update right can update the data of the shared resource.

The information processing apparatus acquires an access right according to the purpose of use of the resource, and accesses the data of the target resource after acquiring the access right.

As described above, when the information processing apparatus accesses the shared resource, in addition to the time for actually accessing the resource data, the time for acquiring the access right is required.

JP, 2000-215190, A

As described above, the information processing device transmits a request for accessing the resource to the exclusive control device not only when updating the shared resource but also when referring to the shared resource, and the exclusive control device responds to the request. A response, which is the result of determining whether or not access is possible, is received.

That is, when accessing the resource, the information processing apparatus needs the time for communication with the exclusive control device in addition to the time for accessing the resource.

In recent years, the performance of disk devices, which are shared resources, has become faster. That is, the data transfer time is shortened. As a result, in the processing performance of the information processing system, the ratio of the time required for communication between the information processing device and the exclusive control device is large. Therefore, reduction of this time is desired. However, the invention described in Patent Document 1 does not reduce the time between the information processing device and the exclusive control device.

As described above, the invention described in Patent Document 1 has a problem that the communication time between the information processing device and the exclusive control device is long.

An object of the present invention is to solve the above problems and provide an information processing system, an information processing apparatus, an information processing method, and a program that reduce the time required for communication between the information processing apparatus and the exclusive control apparatus. ..

An information processing system according to an aspect of the present invention is an information processing system that includes a plurality of information processing apparatuses and an exclusive control apparatus that executes exclusive control on resources accessed by the information processing apparatus. Receives a reference lock request, which is a request for referencing a resource from the resource, does not hold information about the resource corresponding to the reference lock request, and when the resource is a predetermined resource, saves information about the predetermined resource, Create a first notification corresponding to the resource, receive a first response to the first notification from the information processing device, store first information regarding access to the resource, and create a second response regarding the resource. If the resource is locked as a reference and the reference lock request includes information indicating that the response is completed, the first information corresponding to the reference lock request is stored. Retains information about the resource corresponding to the reference lock request, stores the first information corresponding to the reference lock request when the resource is locked as a reference, and the reference lock request includes information indicating an unanswered, and relates to the resource A reference lock processing unit that creates a second response and an information communication unit that sends the first notification to the plurality of information processing devices and sends the second response to the information processing device that sent the reference lock request. In the case where the information processing device receives the reference lock request regarding the resource from the predetermined request source and the second information regarding the resource corresponding to the reference lock request is stored, the request source responds to the reference lock request. A third response is transmitted, a reference lock request including information indicating that the response is completed is created based on the reference lock, and the reference lock request is transmitted to the exclusive control device. The second information regarding the resource corresponding to the reference lock request is stored. If there is not, a request processing unit that creates a reference lock request including information indicating a non-response based on the reference lock request and sends the reference lock request to the exclusive control device, and a first notification when the first notification is received from the exclusive control device. The second information corresponding to the notification of No. 1 is stored, the first response is transmitted to the exclusive control device, and when the second response is received from the exclusive control device, the second response is transmitted to the request source. Resource information processing means.

An information processing device according to an aspect of the present invention receives a reference lock request, which is a request for referencing a resource from the information processing device, does not hold information about the resource corresponding to the reference lock request, and the resource is a predetermined resource. In the case of, the first information regarding the access of the resource is stored by storing the information regarding the predetermined resource, creating the first notification corresponding to the predetermined resource, receiving the first response from the information processing device to the first notification. Information about the resource, create a second response about the resource, hold information about the resource corresponding to the reference lock request, and the resource is locked as a reference, and the reference lock request includes information indicating that the request has been answered, The reference lock is stored when the first information corresponding to the reference lock request is stored, the information about the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the reference lock request includes information indicating that the reference lock request is not answered. The first information corresponding to the request is stored, the second response regarding the resource is created, the first notification is transmitted to the plurality of information processing devices, and the second response is the information processing in which the reference lock request is transmitted. In an information processing system including an exclusive control device transmitting to a device, when a reference lock request is received from a predetermined request source and second information regarding a resource corresponding to the reference lock request is stored, the reference is made to the request source. A third response corresponding to the lock request is transmitted, a reference lock request including information indicating that the response is completed is created based on the reference lock, and the reference lock request is transmitted to the exclusive control device. Request processing means for creating a reference lock request including information indicating non-response based on the reference lock request and transmitting the reference lock request to the exclusive control device when the information is not stored; and receiving a first notification from the exclusive control device. In the case of doing so, the second information corresponding to the first notification is stored, the first response is transmitted to the exclusive control device, and the second response is received when the second response is received from the exclusive control device. Resource information processing means for transmitting to the request source.

An exclusive processing device according to an aspect of the present invention receives a reference lock request, which is a request for referencing a resource related to a resource, from a predetermined request source, and stores second information related to the resource corresponding to the reference lock request. In the case of a reference lock request, a third response corresponding to the reference lock request is transmitted to the request source, a reference lock request including information indicating that the response is completed is created based on the reference lock, and the reference lock request is transmitted to the exclusive control device. When the second information related to the resource corresponding to the above is not stored, a reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. If the second information corresponding to the first notification is stored, the first response is transmitted to the exclusive control device, and the second response is received from the exclusive control device, In an information processing system including a plurality of information processing devices that transmits the response No. 2 to a request source, a reference lock request is received from the information processing device, information about the resource corresponding to the reference lock request is not held, and In the case of a resource, it stores information about a given resource, creates a first notification corresponding to the given resource, receives a first response to the first notification from the information processing device, and 1 information, create a second response about the resource, keep information about the resource corresponding to the reference lock request, if the resource is locked as a reference, and the reference lock request contains information indicating that the response has been answered. , Storing the first information corresponding to the reference lock request, holding the information about the resource corresponding to the reference lock request, and referencing when the resource is locked as a reference and the reference lock request includes information indicating no response A reference lock processing unit that stores the first information corresponding to the lock request and creates a second response regarding the resource, and the first notification is transmitted to the plurality of information processing devices, and the second response is referred to as the reference lock. And an information communication unit that transmits the request to the information processing apparatus that transmitted the request.

An information processing method according to an aspect of the present invention is an information processing system including a plurality of information processing apparatuses and an exclusive control apparatus that executes exclusive control on resources accessed by the information processing apparatus, wherein the exclusive control apparatus is an information processing apparatus. Receives a reference lock request, which is a request for referencing a resource from the resource, does not hold information about the resource corresponding to the reference lock request, and when the resource is a predetermined resource, saves information about the predetermined resource, Create a first notification corresponding to the resource, receive a first response to the first notification from the information processing device, store first information regarding access to the resource, and create a second response regarding the resource. And retains information about the resource corresponding to the reference lock request, and when the resource is locked as a reference and the reference lock request includes information indicating that the response has been completed, stores the first information corresponding to the reference lock request, Retains information about the resource corresponding to the reference lock request, stores the first information corresponding to the reference lock request when the resource is locked as a reference, and the reference lock request includes information indicating an unanswered, and relates to the resource The second response is created, the first notification is transmitted to the plurality of information processing apparatuses, the second response is transmitted to the information processing apparatus that transmitted the reference lock request, and the information processing apparatus transmits a second request from a predetermined request source. When the reference lock request for the resource is received and the second information about the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source and the reference lock request is issued. If a second reference information about a resource corresponding to the reference lock request is not stored, the reference lock request including the information indicating that the reference lock request is generated is transmitted to the exclusive control device, and no response is returned based on the reference lock request. When a first notification is received from the exclusive control device by creating a reference lock request including information indicating the first information, the second information corresponding to the first notification is saved, and the first information is stored. Is transmitted to the exclusive control device, and when the second response is received from the exclusive control device, the second response is transmitted to the request source.

A second information processing method according to an aspect of the present invention receives a reference lock request, which is a request for referencing a resource from an information processing device, does not hold information about the resource corresponding to the reference lock request, and In the case of a predetermined resource, storing information about the predetermined resource, creating a first notification corresponding to the predetermined resource, receiving a first response to the first notification from the information processing device, and accessing the resource. Storing first information about the resource, creating a second response about the resource, holding information about the resource corresponding to the reference lock request, the resource locked as a reference, and including information indicating that the reference lock request has been answered In the case where the first information corresponding to the reference lock request is stored, the information regarding the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the reference lock request includes information indicating that no response has been received. , Storing first information corresponding to the reference lock request, creating a second response regarding the resource, transmitting a first notification to a plurality of information processing devices, and transmitting a second response, the reference lock request In the information processing system including the exclusive control device transmitting to the information processing device, the information processing device receives the reference lock request from the predetermined request source, and the second information regarding the resource corresponding to the reference lock request is stored. In the case of a reference lock request, a third response corresponding to the reference lock request is transmitted to the request source, a reference lock request including information indicating that the response is completed is created based on the reference lock, and the reference lock request is transmitted to the exclusive control device. When the second information related to the resource corresponding to the above is not stored, a reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. If the second information corresponding to the first notification is stored, the first response is transmitted to the exclusive control device, and the second response is received from the exclusive control device, 2 response is transmitted to the request source.

An exclusive processing method according to an aspect of the present invention receives a reference lock request, which is a request for referencing a resource related to a resource, from a predetermined request source, and stores second information related to the resource corresponding to the reference lock request. In the case of a reference lock request, a third response corresponding to the reference lock request is transmitted to the request source, a reference lock request including information indicating that the response is completed is created based on the reference lock, and the reference lock request is transmitted to the exclusive control device. When the second information related to the resource corresponding to the above is not stored, a reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. If the second information corresponding to the first notification is stored, the first response is transmitted to the exclusive control device, and the second response is received from the exclusive control device, In an information processing system including a plurality of information processing devices that transmits the response No. 2 to the request source, the exclusive control device receives the reference lock request from the information processing device and does not hold the information about the resource corresponding to the reference lock request. If the resource is a predetermined resource, save information about the predetermined resource, create a first notification corresponding to the predetermined resource, and receive a first response to the first notification from the information processing device, Store first information about access to the resource, create a second response about the resource, hold information about the resource corresponding to the reference lock request, lock the resource as a reference, and indicate that the reference lock request has been answered When the information is included, the first information corresponding to the reference lock request is stored, the information about the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the information indicating that the reference lock request does not respond is stored. When including, the first information corresponding to the reference lock request is stored, the second response regarding the resource is created, the first notification is transmitted to the plurality of information processing devices, and the second response is referred to as the reference lock. The request is sent to the information processing device that sent the request.

A program according to an aspect of the present invention receives a reference lock request that is a request for referencing a resource from an information processing device, does not hold information about the resource corresponding to the reference lock request, and the resource is a predetermined resource. In the first information storage unit, information about a predetermined resource is stored, a first notification corresponding to the predetermined resource is created, a first response to the first notification is received from the information processing device, and first information about access to the resource is received. Save a second response for the resource, hold information about the resource corresponding to the reference lock request, and lock the reference when the resource is locked as a reference and the reference lock request includes information indicating that the reference lock request has been answered. The reference lock request is stored when the first information corresponding to the request is stored, the information about the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the reference lock request includes information indicating that the reference lock request is not answered. The corresponding first information is stored, a second response regarding the resource is created, the first notification is transmitted to the plurality of information processing devices, and the second response is transmitted to the information processing device that transmitted the reference lock request. In an information processing system including an exclusive control device for transmitting, when a process of receiving a reference lock request from a predetermined request source and second information regarding a resource corresponding to the reference lock request are stored, refer to the request source. A process for transmitting a third response corresponding to the lock request, creating a reference lock request including information indicating that the response has been completed based on the reference lock, and transmitting the reference lock request to the exclusive control device, and a resource related to the reference lock request. When the information of No. 2 is not stored, a process of creating a reference lock request including information indicating a non-response based on the reference lock request and transmitting the reference lock request to the exclusive control device, and receiving a first notification from the exclusive control device In the case where the second response is stored, the second information corresponding to the first notification is stored, and the second response is received when the second response is received from the processing of transmitting the first response to the exclusive control apparatus. Causes the computer to execute a process of transmitting a response to the request source.

A second program according to an aspect of the present invention receives a reference lock request, which is a request for referring to a resource regarding a resource, from a predetermined request source, and stores second information regarding the resource corresponding to the reference lock request. In this case, a third response corresponding to the reference lock request is transmitted to the request source, a reference lock request including information indicating that the response is completed is created based on the reference lock, and the reference lock request is transmitted to the exclusive control device. When the second information related to the resource corresponding to the request is not stored, a reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. When the first notification is received, the second information corresponding to the first notification is stored, the first response is transmitted to the exclusive control device, and the second response is received from the exclusive control device, In an information processing system including a plurality of information processing devices that transmit a second response to a request source, the process of receiving a reference lock request from the information processing device and the resource that does not hold the resource corresponding to the reference lock request Is a predetermined resource, stores information about the predetermined resource, creates a first notification corresponding to the predetermined resource, receives a first response to the first notification from the information processing device, and A process of storing the first information regarding access, creating a second response regarding the resource, and holding information regarding the resource corresponding to the reference lock request, the resource is locked as a reference, and the reference lock request indicates that the response has been answered. When the information is included, a process of storing the first information corresponding to the reference lock request and the information about the resource corresponding to the reference lock request are held, the resource is locked as a reference, and the reference lock request indicates a non-response. When the information is included, a process of storing the first information corresponding to the reference lock request and creating a second response regarding the resource, a process of transmitting the first notification to a plurality of information processing devices, and a second process The computer is caused to execute a process of transmitting the response of (1) to the information processing device that transmitted the reference lock request.

According to the present invention, it is possible to achieve the effect of reducing the time required for communication between the information processing device and the exclusive control device.

FIG. 1 is a block diagram showing an example of the configuration of an information processing system according to the first embodiment of the present invention. FIG. 2 is a block diagram illustrating an example of the configuration of the lock control unit of the information processing device according to the first embodiment. FIG. 3 is a block diagram showing an example of the configuration of the exclusive control device according to the first embodiment. FIG. 4 is a diagram illustrating an example of a request format according to the first embodiment. FIG. 5 is a diagram schematically showing an example of data stored in the exclusive control table according to the first embodiment. FIG. 6 is a sequence diagram showing an example of an operation regarding an S lock request for an unregistered resource according to the first embodiment. FIG. 7 is a sequence diagram showing an example of an operation related to an S lock request for a registered resource according to the first embodiment. FIG. 8 is a sequence diagram showing an example of an operation relating to an unlock request in the first embodiment. FIG. 9 is a sequence diagram showing an example of an operation relating to an S lock request for a resource for which an X lock has not occurred after unlocking the S lock in the first embodiment. FIG. 10 is a sequence diagram showing an example of an operation relating to an X lock request for a resource having an S lock in the first embodiment. FIG. 11 is a sequence diagram showing an example of an operation related to an X lock request for a resource without an S lock and an X lock according to the first embodiment. FIG. 12 is a flowchart showing an example of the operation of the reference lock processing unit according to the first embodiment. FIG. 13 is a flowchart showing an example of the operation of the update lock processing unit according to the first embodiment. FIG. 14 is a flowchart showing an example of the operation of the unlock processing unit according to the first embodiment. FIG. 15 is a flowchart showing an example of the operation of the command analysis unit according to the first embodiment. FIG. 16 is a flowchart showing an example of the operation of the exclusive control device communication unit according to the first embodiment. FIG. 17 is a block diagram showing an example of a schematic configuration of an information processing system according to the present invention. FIG. 18 is a block diagram showing an example of the configuration of an information processing apparatus which is a modified example of the present invention. FIG. 19 is a sequence diagram showing an example of an operation relating to an X lock request for an X locked resource according to the first embodiment. FIG. 20 is a sequence diagram showing an example of an operation relating to an S lock request for an X-locked resource in the first embodiment. FIG. 21 is a sequence diagram showing an example of an operation relating to an S lock request for a resource unlocked after being X-locked in the first embodiment. FIG. 22 is a sequence diagram showing an example of an operation relating to an X lock request for an unregistered resource according to the first embodiment.

Next, an embodiment of the present invention will be described with reference to the drawings.

Each drawing explains the embodiment of the present invention. However, the present invention is not limited to the description of each drawing. In addition, the same numbers are given to the same configurations in the respective drawings, and repeated description thereof may be omitted. Further, in the drawings used for the following description, the configuration of the portion not related to the description of the present invention may be omitted and not illustrated.

[Explanation of terms]
Prior to the description of the embodiments of the present invention, terms used in the description will be summarized.

The “resource” is an element used by the information processing device in the information processing system in operation. For example, the resource is the processing capacity and processing time of the CPU, the capacity of the memory, the capacity of the hard disk, or the communication band.

The “shared resource” is a resource shared by a plurality of information processing devices. For example, the shared resource is a file, a database, or a shared device. In the following description, resources are shared resources unless otherwise specified.

“Lock successful” is a state in which access to a resource is permitted. In other words, the lock success means that the access right is secured.

The “waiting for lock” is a state in which the access to the resource is not permitted, and therefore the state is waiting for the access to be permitted (lock success).

The “lock type” is a type of access right when accessing a resource. The lock type includes at least S lock and X lock described below.

The “S lock” is a lock type in which access to a resource from a plurality of information processing devices is permitted at the same time. However, the S-lock does not allow updating of data. That is, the S lock is a lock type that permits reference access. Therefore, the S lock is also called “reference lock”. Furthermore, S locks are not set on the same resource at the same time as the following X locks. An example of the S lock is the above reference right. The S lock request is a request for the information processing apparatus to request the exclusive control apparatus to secure an S lock for a predetermined resource. Therefore, the S lock request includes information about the resource.

The "X lock" is a lock type in which access is exclusively granted to the resource. The X lock is used when updating the data of the resource. Therefore, the X lock is also called “update lock”. The X lock is used, for example, when updating resource data or when one information processing device exclusively uses the resource. An example of the X lock is the above update right. The X lock request is a request for the information processing apparatus to request the exclusive control apparatus to secure an X lock for a predetermined resource. Therefore, the X-lock request contains information about the resource.

“Lock” means to acquire an S lock or an X lock for a resource as described above. For example, obtaining an S-lock or an X-lock on a resource is said to "lock that resource."

"Unlocking" is to release the lock (for example, S lock) from the locked resource. The unlock request is a request for the information processing apparatus to request the exclusive control apparatus to unlock a predetermined resource. Therefore, the unlock request includes information about the resource.

An "S resource" is a resource for which an S lock request frequency is high with respect to an X lock request. The S resource setting source is not particularly limited. For example, the exclusive control device may hold in advance information about resources that are S resources. Alternatively, the information processing device may specify the exclusive control device.

<First Embodiment>
Next, a first embodiment of the present invention will be described with reference to the drawings.

In the following description, the information processing device uses resources. In detail, the software operating on the information processing device uses the resource in the operation. The software is managed using a predetermined processing unit. As the processing unit, various terms are used in each processing system. Such terms include, for example, task, module, or thread. A general application and OS (Operating System) operate as a set of the above processing units. In this embodiment, the processing unit is not limited. Therefore, in the following description, a task will be used as an example.

That is, as described above, the information processing device according to the embodiment of the present invention uses resources. Then, in detail, the task included in the information processing device uses the resource. However, in the present invention, the subject using the resource is not limited to the above.

[Description of configuration and operation of each configuration]
First, the configuration of the first embodiment and the operation of each configuration will be described with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of an information processing system 100 according to the first embodiment of the present invention.

The information processing system 100 includes a plurality of information processing devices 10 and an exclusive control device 40.

The information processing device 10 executes processing using resources (not shown). When using the resource, the information processing device 10 secures the S lock or the X lock for the resource. In addition, the information processing device 10 requests unlocking of the resource. Note that, as already described, the task operating on the information processing device 10 uses the resource in detail. That is, the task is the request source of the S lock request, the X lock request, and the unlock request.

The information processing device 10 includes a lock control unit 20.

The lock control unit 20 controls the operation of locking the resource in the information processing device 10. The lock control unit 20 includes a lock table 30.

The lock table 30 stores information about resources that have acquired S locks.

The lock control unit 20 and the lock table 30 will be described in detail later.

The exclusive control device 40 manages the access right to the resource in response to the request from the information processing device 10. An example of access right management is exclusive control. Therefore, in the following description, “exclusive control” will be used as an example of access right management. That is, the exclusive control device 40 executes exclusive control of resources. Specifically, the exclusive control device 40 executes exclusive control of resources in response to various requests from the information processing device 10 and transmits a response as a result to the information processing device 10. The exclusive control device 40 includes an exclusive control table 50.

The exclusive control table 50 stores information related to resource locks.

The exclusive control device 40 and the exclusive control table 50 will be described in detail later.

Next, the details of the configuration of the lock control unit 20 of the information processing device 10 will be described with reference to the drawings.

FIG. 2 is a block diagram showing an example of the configuration of the lock control unit 20 of the information processing device 10 according to the first embodiment. As shown in FIG. 2, the lock control unit 20 includes a command analysis unit 201, an exclusive control device communication unit 202, and a lock table 30.

The command analysis unit 201 will be described with reference to FIGS. 2 and 15, including operations.

FIG. 15 is a flowchart showing an example of the operation of the command analysis unit 201 according to the first embodiment.

The command analysis unit 201 receives a request for a resource request (S lock request, X lock request, or unlock request) from the request source. For example, the lock control unit 20 receives a request from a task in the upper layer. That is, the lock control unit 20 receives a request for a resource from the upper layer. However, the request source of the lock control unit 20 is not limited to the upper layer.

The command analysis unit 201 determines whether the request is an S lock request (step S401).

In the case of the S lock request (Yes in step S401), the command analysis unit 201 searches the lock table 30 for information regarding the requested resource (step S402). For example, when the resource is managed using the identifier (Identifier (ID)), the command analysis unit 201 searches the lock table 30 for the identifier (ID) of the requested resource. ..

Then, the command analysis unit 201 determines the search result. That is, the command analysis unit 201 determines whether or not the information about the resource is included in the lock table 30 (step S403).

When the information about the resource is included in the lock table 30 (Yes in step S403), the command analysis unit 201 transmits a lock success response to the request source (for example, task) (step S404).

As described above, the command analysis unit 201 of the lock control unit 20 sends a response indicating that the lock is successful before the communication with the exclusive control device 40 to the S lock request for the resource whose information is included in the lock table 30. Send to. That is, the lock control unit 20 reduces the response time of the S lock request with the exclusive control device 40, and transmits the response to the request source. The requester continues operation using this response. Therefore, the information processing device 10 can reduce the processing time of the request source.

After transmitting the response to the request source, the command analysis unit 201 transmits, to the exclusive control device 40, the S lock request to which the information (for example, flag) of “responded” is added (step S406). Hereinafter, the S lock request to which the information indicating that the response has been made is added is referred to as “S lock request (response completed)”. The command analysis unit 201 of the lock control unit 20 requests the exclusive control device 40 to make an S lock request for the requested resource using the S lock request (already answered).

Then, the command analysis unit 201 ends the process.

If the information about the resource is not included in the lock table 30 (No in step S403), the command analysis unit 201 adds information (for example, a flag) indicating “not responded” to the exclusive control device 40 to lock the S lock. The request is transmitted (step S405). Hereinafter, the S lock request to which the unacknowledged information is added is referred to as an “S lock request (unacknowledged)”. Then, the command analysis unit 201 ends the process.

If it is not the S lock request (No in step S401), that is, if it is the X lock request or the unlock request, the command analysis unit 201 transmits the X lock request or the unlock request to the exclusive control device 40 (step S407). The command analysis unit 201 may add information indicating “unsupported” to the X lock request and the unlock request. For example, when the exclusive control device 40 transmits a response to a request to which “unanswered” is added, the information processing device 10 adds information indicating “unanswered” and transmits each request. Then, the command analysis unit 201 ends the process.

Here, the S lock is a lock type to which access is permitted from a plurality of information processing apparatuses 10 at the same time. Further, the lock table 30 stores information (for example, resource ID) regarding the resource for which the S lock is secured. Therefore, the S lock request for the resource whose information is included in the lock table 30 results in a successful lock.

Therefore, when the S-lock request received from the request source is the S-lock request for the resource whose information is included in the lock table 30, the command analysis unit 201 successfully locks the request source before communicating with the exclusive control device 40. Reply can be sent. Therefore, the request source can proceed with the process without waiting for a response from the exclusive control device 40. That is, the information processing device 10 can reduce the time required for communication with the exclusive control device 40.

In steps S405 and S407, the exclusive control device 40 transmits a response to the information processing device 10. However, the command analysis unit 201 does not receive the response from the exclusive control device 40. As will be described later, the exclusive control device communication unit 202 executes operations regarding these responses. Note that the response includes at least "lock success", "lock wait", or "unlock complete", as will be described later.

The format of the request transmitted by the command analysis unit 201 to the exclusive control device 40 is not particularly limited.

FIG. 4 is a diagram illustrating an example of a request format according to the first embodiment.

The format in the upper part of FIG. 4 is an example of a lock request format used for the S lock request and the X lock request (hereinafter collectively referred to as “lock request”). The lock request format includes a request type, a task ID, a resource ID, a lock type, and a response flag. The format at the bottom of FIG. 4 is an example of an unlock request format used for an unlock request. The unlock request format includes a request type, a task ID, a resource ID, and a response flag.

The request type is information indicating whether the request is a lock request or an unlock request.

The task ID is an identifier (ID) for identifying the request source (task) that requested the request.

The resource ID is an identifier (ID) indicating the requested resource.

The lock type is information indicating the lock type already described, that is, the S lock and the X lock.

The response flag is information indicating “already responded” or “not responded” as described above.

The command analysis unit 201 receives, as a lock request, a data set of a request type, a task ID, a resource ID, and a lock type from the request source. Then, the command analysis unit 201 adds a response flag (information indicating “already answered” or “not responded”) to the lock request received from the request source to create a lock request, and the exclusive control device Send to 40.

In addition, the command analysis unit 201 receives a data set of a request type, a task ID, and a resource ID as an unlock request from the request source. Then, the command analysis unit 201 adds a response flag (information indicating “already answered” or “unanswered”) to the unlock request received from the request source, creates an unlock request, and excludes it. It is transmitted to the control device 40.

The lock request format may include resource attributes. The resource attribute is information indicating an attribute related to the resource corresponding to the resource ID. The resource attribute is, for example, information indicating S resource.

Next, with reference to FIG. 2 and FIG. 16, the exclusive control device communication unit 202 will be described including operations.

FIG. 16 is a flowchart showing an example of the operation of the exclusive control device communication unit 202 according to the first embodiment.

When the exclusive control device communication unit 202 receives the response or notification from the exclusive control device 40, the exclusive control device communication unit 202 determines whether the received response or notification is addressed to the request source (step S501).

If it is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 transmits the received response or notification to the request source (step S502). Then, the exclusive control device communication unit 202 ends the process.

When it is not addressed to the request source (No in step S501), the exclusive control device communication unit 202 determines whether or not the notification is the addition of the information regarding the resource to the lock table 30 (step S503). The notification of the addition of the resource-related information to the lock table 30 will be referred to as “lock registration notification” below.

In the case of a lock registration notification (Yes in step S503), the exclusive control device communication unit 202 adds the information about the notified resource to the lock table 30 (step S505). Then, the exclusive control device communication unit 202 transmits, to the exclusive control device 40, a response indicating that the lock table 30 has been updated.

If the notification is not a lock registration notification, the notification is a notification of deletion of information regarding the resource. Hereinafter, this notification will be referred to as a "lock deletion notification". When the lock deletion notification is received (No in step S503), the exclusive control device communication unit 202 deletes the information about the resource notified from the lock table 30 (step S504). Then, the exclusive control device communication unit 202 transmits a response indicating that the lock table 30 has been updated to the exclusive control device 40 (step S506). Then, the exclusive control device communication unit 202 ends the process.

Next, a detailed configuration of the exclusive control device 40 will be described with reference to the drawings.

FIG. 3 is a block diagram showing an example of the configuration of the exclusive control device 40 according to the first embodiment. The exclusive control device 40 includes a command distribution unit 401, a lock table control unit 402, a reference lock processing unit 403, an update lock processing unit 404, an unlock processing unit 405, and an exclusive control table 50.

The command distribution unit 401 distributes the request (lock request and unlock request) received from the information processing apparatus 10 to any of the reference lock processing unit 403, the update lock processing unit 404, and the unlock processing unit 405. Specifically, the command distribution unit 401 transmits the S lock request to the reference lock processing unit 403. The command distribution unit 401 transmits the X lock request to the update lock processing unit 404. Then, the command distribution unit 401 transmits an unlock request to the unlock processing unit 405. The command distribution unit 401 may distribute the request using the request type and the lock type in the lock request format and the unlock request format shown in FIG. 4, for example.

The lock table control unit 402 receives a request from the reference lock processing unit 403, the update lock processing unit 404, and the unlock processing unit 405 to send a notification to the information processing apparatus 10. This notification is a lock registration notification and a lock deletion notification. Then, the lock table control unit 402 transmits the notification to all the information processing devices 10. Then, the lock table control unit 402 receives a response to the notification from the information processing device 10. When the lock table control unit 402 receives the responses from all the information processing apparatuses 10, the lock table control unit 402 responds to the request source (the reference lock processing unit 403, the update lock processing unit 404, or the unlock processing unit 405) that requested the transmission of the notification. Send the completion of. However, the requester may judge the completion of the notification. In this case, the lock table control unit 402 transmits the received response to the request source.

Further, the lock table control unit 402 sends a response, which is a result of the lock request and the unlock request requested by the information processing apparatus 10, from the reference lock processing unit 403, the update lock processing unit 404, and the unlock processing unit 405. To receive. Then, the lock table control unit 402 transmits the response to the information processing device 10 that has transmitted the request.

The exclusive control table 50 is a storage unit that stores data indicating the locked state of resources.

FIG. 5 is a diagram schematically showing an example of data stored in the exclusive control table 50 according to the first embodiment. FIG. 5 shows data of one resource as an example. The exclusive control table 50 stores a number of data as shown in FIG. 5 corresponding to the number of resources.

In addition, in general, each entry is managed by using information in a link format. Therefore, FIG. 5 shows the connection of each entry using the line indicating the link relationship. However, the resource data is not limited to this format. For example, a format in which all task entries are connected to resource entries may be used as the data regarding the resources. Alternatively, the entries may be managed using tabular data. In addition, in the following description, each task entry is referred to as being connected to a resource entry even when it is connected to the resource entry via a plurality of task entries.

The number of task entries connected to the resource entry is not limited to the description in FIG. Therefore, FIG. 5 shows some of the task entries by using broken lines to show that the number is not limited.

The resource entry is a set of information indicating resources to be processed by the exclusive control device 40. The resource entry includes a resource ID, a lock queue (L), and a queue (W).

The resource ID is an identifier (ID) for uniquely identifying the resource corresponding to the resource entry.

The lock string (L) is information indicating a task entry that has been successfully locked with respect to a resource. The task entry connected to the lock row (L) and the task entry linked from the task entry are the task entries of the tasks that have successfully locked the resource. The lock string (L) is, for example, information indicating the address of the task entry that has been successfully locked first.

The queue (W) is information indicating a task entry waiting for a lock on a resource. A task entry connected to the queue (W) and a task entry linked from the task entry are task entries waiting for locking the resource. The queue (W) is, for example, information indicating the address of the task entry that was first in the lock wait state.

A task entry is a set of information indicating a task. The task entry includes a task ID, a lock type, and a next task.

The task ID is an identifier (ID) for uniquely identifying the task.

The lock type is the lock type requested by the task corresponding to the task entry.

The next task is information indicating a task entry to be continued. The next task is, for example, information indicating the address of the next task entry. The task next to the last task entry in each column is information indicating the end or information indicating a blank.

The pseudo entry is a set of information indicating the exclusive control device 40. The format of the pseudo entry is similar to that of the task entry. However, the lock type is S lock. The exclusive control device 40 registers a pseudo entry for the resource that is the S resource. Therefore, the pseudo entry is connected to the beginning of the lock row (L).

The number of tasks connected to the lock queue (L) and the queue (W) is not limited as long as the specifications of the information processing system 100 and the exclusive control device 40 are specified.

For example, in the initial state, the resource entry may not be connected to the task entry.

Further, all task entries may be connected to the lock row (L). For example, if all the tasks use the reference lock, all the task entries are connected to the lock row (L). That is, the task entry connected to the queue (W) may be omitted.

Alternatively, all task entries may be connected to the queue (W). For example, all task entries may be attached to a queue (W) if the resource is temporarily suspended. However, even in this case, the task entry that has been successfully locked may be connected to the lock row (L).

With reference to FIGS. 3 and 12, the reference lock processing unit 403 will be described including the operation.

FIG. 12 is a flowchart showing an example of the operation of the reference lock processing unit 403 according to the first embodiment.

The reference lock processing unit 403 receives the S lock request from the command distribution unit 401.

Then, the reference lock processing unit 403 determines whether or not the exclusive control table 50 includes information regarding the resource that is the target of the requested S lock (step S101).

If it is not included in the exclusive control table 50 (No in step S101), the reference lock processing unit 403 registers information regarding the resource (for example, the resource entry in FIG. 5) in the exclusive control table 50 (step S102). ..

The reference lock processing unit 403 determines whether the target resource is an S resource (step S103).

If it is an S resource (Yes in step S103), the reference lock processing unit 403 adds a pseudo entry to the exclusive control table 50 (step S104).

Then, the reference lock processing unit 403 transmits a lock registration notification regarding the resource that is the target of the S lock request to all the information processing devices 10 via the lock table control unit 402 (step S105). That is, the reference lock processing unit 403 transmits a lock registration notification in response to an S lock request for a resource that has not been registered. A resource whose information is not registered in the exclusive control table 50 is not registered in the lock table 30 because the resource has not been accessed. That is, this operation is an operation in which the reference lock processing unit 403 transmits a lock registration notification to an S lock request for a resource whose information is not registered in the lock table 30.

As described above, the exclusive control device communication unit 202 that has received this notification registers information regarding the resource in the lock table 30. Then, after registration, the exclusive control device communication unit 202 transmits a response of update completion.

The reference lock processing unit 403 waits for the response of the update completion from all the information processing devices 10 (step S115). Specifically, the reference lock processing unit 403 waits for the completion of the response to be transmitted from the lock table control unit 402.

If it is not an S resource (No in step S103), or after updating is completed in all information processing devices 10, the reference lock processing unit 403 sets the task entry of the task that has transmitted the S lock request to the lock column of the exclusive control table It is registered in (L) (step S106).

Then, the reference lock processing unit 403 transmits a lock success response to the lock table control unit 402 (step S107). Then, the reference lock processing unit 403 ends the process.

In this case, the lock table control unit 402 transmits a lock success response to the information processing device 10.

When the exclusive control table 50 includes information about resources (Yes in step S101), the reference lock processing unit 403 determines whether the lock row (L) of the resource entry includes an X lock (step S108). ..

When the X lock is not included (No in step S108), the reference lock processing unit 403 adds the task entry of the requested task to the lock column (L) of the exclusive control table 50 (step S109).

Then, the reference lock processing unit 403 determines whether or not the S lock request has been answered (step S110).

When the response has been made (Yes in step S110), the reference lock processing unit 403 ends the process.

If the response has not been received (No in step S110), the reference lock processing unit 403 transmits a lock success response to the lock table control unit 402 (step S111). Then, the reference lock processing unit 403 ends the process.

In this case, the lock table control unit 402 transmits a lock success response to the information processing device 10.

When there is an X lock (Yes in step S108), the reference lock processing unit 403 adds the task entry of the requested task to the queue (W) (step S112).

Then, the reference lock processing unit 403 transmits a lock wait response to the lock table control unit 402 (step S113). Then, the reference lock processing unit 403 ends the process.

In this case, the lock table control unit 402 transmits a lock wait response to the information processing device 10 that has transmitted the S lock request.

The update lock processing unit 404 will be described including the operation with reference to FIGS.

FIG. 13 is a flowchart showing an example of the operation of the update lock processing unit 404 according to the first embodiment.

The update lock processing unit 404 receives the X lock request from the command distribution unit 401.

Then, the update lock processing unit 404 determines whether or not the requested X lock is included in the exclusive control table 50 (step S201).

When the exclusive control table 50 includes information about a resource (Yes in step SS201), the update lock processing unit 404 determines whether the lock type of the task that locks the resource is X lock (step S202). ..

If not X-locked (No in step S202), the update lock processing unit 404 sends a lock deletion notification to the information processing apparatus 10 to delete the information on the resource that is the target of the X-lock request from the lock table 30. Yes (step S203). It should be noted that the case where there is no X lock here includes the case where there is no S lock, that is, the case where there is no locked task entry.

Then, the update lock processing unit 404 waits for the end of the processing in all the information processing devices 10 (step S211).

After all the information processing devices 10 respond, the update lock processing unit 404 deletes the pseudo entry (step S204).

Then, the update lock processing unit 404 confirms whether or not there is a task entry in the lock row (L) of the resource entry (step S212).

When there is a task (Yes in step S212) and when X-locked (Yes in step S202), the update lock processing unit 404 determines the task entry of the task requested in the queue (W) (task entry of the task of the X-lock request). ) Is added (step S209).

Then, the update lock processing unit 404 transmits a lock wait response to the lock table control unit 402 (step S210). Then, the update lock processing unit 404 ends the processing.

In this case, the lock table control unit 402 transmits a lock wait response to the information processing apparatus 10 that has transmitted the X lock request.

When the exclusive control table 50 does not include the information on the resource (No in step SS201), the update lock processing unit 404 registers the information on the resource in the exclusive control table 50 (step S206).

After step S206 and when there is no task (No in step S212), the update lock processing unit 404 registers the task entry of the requested task (task entry of X lock) in the lock row (L) (step). S207).

Then, the update lock processing unit 404 transmits a lock success response to the lock table control unit 402 (step S208). Then, the update lock processing unit 404 ends the processing.

In this case, the lock table control unit 402 transmits a lock success response to the information processing apparatus 10 that has transmitted the X lock request.

With reference to FIGS. 3 and 14, the unlock processing unit 405 will be described including the operation.

FIG. 14 is a flowchart showing an example of the operation of the unlock processing unit 405 according to the first embodiment.

The unlock processing unit 405 receives the unlock request from the command distribution unit 401.

Then, the unlock processing unit 405 deletes the task entry of the task that is the target of the unlock request from the exclusive control table 50 (step S301). The task entry is deleted regardless of whether it is included in the lock queue (L) or the queue (W). Further, the unlock processing unit 405 deletes the task entry which is the X lock request, and when there is no task entry in the queue (W) of the resource entry corresponding to the resource, deletes the resource entry.

Then, the unlock processing unit 405 transmits an unlock completion response to the lock table control unit 402 (step S302).

The lock table control unit 402 transmits a response of unlock completion to the information processing device 10 that has transmitted the unlock request.

The unlock processing unit 405 confirms whether or not there is a task (task entry) that can lock the resource in the queue (W) of the resource entry (step S303).

When there is no lockable task (task entry) (No in step S303), the unlock processing unit 405 ends the process.

When there is a lockable task (task entry) (Yes in step S303), the unlock processing unit 405 determines whether the resource requested by the task has an X lock (step S304).

When there is no X lock (No in step S304), the unlock processing unit 405 determines whether the resource is the S resource (step S307).

If it is an S resource (Yes in step S307), the unlock processing unit 405 registers a pseudo entry (step S308).

Then, the unlock processing unit 405 transmits a lock registration notification indicating that the resource is registered as an S lock to all the information processing devices 10 via the lock table control unit 402 (step S309). As described above, the exclusive control device communication unit 202 that has received this notification registers information regarding the resource in the lock table 30. Then, after registration, the exclusive control device communication unit 202 transmits a response of update completion.

The unlock processing unit 405 waits for all the information processing apparatuses 10 to send the response of the update completion (step S310). Then, the unlock processing unit 405 proceeds to step S305.

If there is an X lock (Yes in step S304) and if it is not an S resource (No in step S307), the unlock processing unit 405 proceeds to step S305.

Then, the unlock processing unit 405 adds the lockable task entry to the lock column (L) of the exclusive control table 50 (step S305).

Then, the unlock processing unit 405 transmits a lock success response to the lock table control unit 402 (step S306). Then, the reference lock processing unit 403 ends the process.

The lock table control unit 402 transmits a lock success response to the information processing apparatus 10 that has transmitted the request for the task entry added to the lock string (L).

[Description of Operation of Information Processing System 100]
Next, the operation of the information processing system 100 will be described with reference to the drawings.

(1) S lock request (for unregistered resources)
FIG. 6 is a sequence diagram showing an example of an operation regarding an S lock request for an unregistered resource according to the first embodiment.

First, a request source (for example, a task) sends an S lock request for a resource to the lock control unit 20.

The lock control unit 20 confirms the registration state of the resource-related information in the lock table 30.

That is, since the request is the S lock request (Yes in step S401), the lock control unit 20 searches the lock table 30 (step S402).

Since the information regarding the requested resource is not registered in the lock table 30 (No in step S403), the lock control unit 20 adds the unacknowledged information and transmits the S lock request to the exclusive control device 40. Yes (step S405). That is, the lock control unit 20 transmits the S lock request (not responded) to the exclusive control device 40.

The command distribution unit 401 of the exclusive control device 40 that has received the S lock request (not responded) transmits the S lock request to the reference lock processing unit 403.

The reference lock processing unit 403 registers the resource entry in the exclusion control table 50 (step S102) because the information regarding the resource of the S lock request does not exist in the exclusion control table 50 (No in step S101).

The reference lock processing unit 403 confirms whether the resource is an S resource (step S103).

If it is an S resource (Yes in step S103), the reference lock processing unit 403 adds a resource entry to the exclusive control table 50 (step S104).

Then, the reference lock processing unit 403 creates a lock registration notification, and transmits the lock registration notification to all the information processing devices 10 via the lock table control unit 402 (step S105).

Then, the reference lock processing unit 403 waits for the end of the processing in all the information processing devices 10 (step S115).

Since the received notification is the lock registration notification (Yes in step S503), the exclusive control device communication unit 202 adds information about the resource to the lock table 30 (step S505).

Then, the exclusive control device communication unit 202 transmits a response indicating that the update is completed (step S506).

When the processing in all the information processing devices 10 is completed, or when it is not the S resource (No in step S103), the reference lock processing unit 403 sets the task entry of the request source (task) to the lock string (L). Register (step S106).

Then, the reference lock processing unit 403 transmits a lock success response to the information processing apparatus 10 that has transmitted the S-lock request via the lock table control unit 402 (step S107).

Since the received response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 of the information processing device 10 transmits the response to the request source (step S502).

(2) S lock request (for registered resources)
FIG. 7 is a sequence diagram showing an example of an operation related to an S lock request for a registered resource according to the first embodiment.

First, a request source (for example, a task) sends an S lock request for a resource to the lock control unit 20.

The lock control unit 20 confirms the registration state of the resource-related information in the lock table 30.

That is, since the request is the S lock request (Yes in step S401), the lock control unit 20 searches the lock table 30 (step S402).

Since the information about the resource is registered in the lock table 30 (Yes in step S403), the lock control unit 20 transmits a lock success response to the request source (step S404).

Then, the lock control unit 200 adds the information indicating that the response has been made and transmits the S lock request to the exclusive control device 40 (step S406). That is, the lock control unit 200 transmits the S lock request (already answered) to the exclusive control device 40.

The command distribution unit 401 of the exclusive control device 40 that has received the S lock request (already answered) transmits the S lock request to the reference lock processing unit 403.

Since the information regarding the requested resource is in the exclusive control table 50 (Yes in step S101), the reference lock processing unit 403 checks the lock type that locks the resource (step S108). In this case, since the lock type is S-lock (No in step S108), the reference lock processing unit 403 adds a task entry to the lock column (L) of the exclusive control table 50 (step S109).

Then, since the response has been made (Yes in step S110), the reference lock processing unit 403 ends the process.

(3) Unlock request FIG. 8 is a sequence diagram showing an example of an operation related to the unlock request in the first embodiment.

First, a request source (for example, a task) transmits a resource unlock request to the lock control unit 20.

Since the lock control unit 20 is not the S lock request (No in step S401), the lock control unit 20 transmits the unlock request to the exclusive control device 40 (step S407).

Upon receiving the unlock request, the command distribution unit 401 of the exclusive control device 40 transmits the unlock request to the unlock processing unit 405.

The unlock processing unit 405 deletes the task entry from the exclusive control table 50 (step S301).

Then, the unlock processing unit 405 creates an unlock completion response and sends it to the information processing apparatus 10 that has sent the unlock request via the lock table control unit 402 (step S302).

Since the response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 transmits the response to the request source (step S502).

When there is no task that can be locked (No in step S303), the unlock processing unit 405 ends the processing.

The operation up to this point is the operation related to the unlock request.

However, the unlock processing unit 405 of this embodiment further executes the following operation.

When there is a lockable task (Yes in step S303), the unlock processing unit 405 operates as follows.

When there is no X lock (No in step S304), the unlock processing unit 405 determines whether or not it is an S resource (step S307).

In the case of S resource (Yes in step S307), the unlock processing unit 405 registers the pseudo entry (step S308).

Then, the unlock processing unit 405 transmits the lock registration notification to all the information processing devices 10 (step S309).

The exclusive control device communication unit 202 registers information regarding the resource in the lock table 30. Then, after registration, the exclusive control device communication unit 202 transmits a response of update completion.

The unlock processing unit 405 waits for all the information processing apparatuses 10 to send the response of the update completion (step S310). Then, the unlock processing unit 405 proceeds to step S305.

If there is an X lock (Yes in step S304) or if it is not an S resource (No in step S307), the unlock processing unit 405 proceeds to step S305.

Then, the unlock processing unit 405 adds the task entry of the task of the S lock request to the lock column (L) of the exclusive control table 50 (step S305).

Then, the unlock processing unit 405 transmits a lock success response to the information processing apparatus 10 that has transmitted the request added to the lock row (L) via the lock table control unit 402 (step S306).

(4) S lock request (when X lock is not generated after unlocking S lock)
FIG. 9 is a sequence diagram showing an example of an operation relating to an S lock request for a resource for which an X lock has not occurred after unlocking the S lock in the first embodiment.

First, a request source (for example, a task) sends an S lock request for a resource to the lock control unit 20.

Since the lock control unit 20 is the S lock request (Yes in step S401), the lock control unit 20 searches the lock table 30 (step S402).

The lock control unit 20 confirms the registration state of the resource-related information in the lock table 30.

Since the information about the resource is registered in the lock table 30 (Yes in step S403), the lock control unit 20 transmits a lock success response to the request source (step S404).

Then, the lock control unit 200 adds the information indicating that the response has been made and transmits the S lock request to the exclusive control device 40 (step S406). That is, the lock control unit 200 transmits the S lock request (already answered) to the exclusive control device 40.

The command distribution unit 401 of the exclusive control device 40 that has received the S lock request (already answered) transmits the S lock request to the reference lock processing unit 403.

The reference lock processing unit 403 checks whether or not there is an X lock in the lock column (L) of the resource entry because the exclusive control table 50 has information regarding the requested resource (Yes in step S101) (step S108). ). In this case, since there is no X lock in the lock column (L) (No in step S108), the reference lock processing unit 403 adds the task entry to the lock column (L) of the exclusive control table 50 (step S109). ..

Then, the reference lock processing unit 403 confirms whether or not a response has been made (step S110).

Since the response has been made (Yes in step S110), the reference lock processing unit 403 ends the process.

(5) X lock request (when S lock exists)
FIG. 10 is a sequence diagram showing an example of an operation relating to an X lock request for a resource having an S lock in the first embodiment.

First, a request source (for example, a task) sends an X lock request for a resource to the lock control unit 20.

Since the request is not the S lock request (No in step S401), the lock control unit 20 transmits the X lock request to the exclusive control device 40 (step S407).

Upon receiving the X lock request, the command distribution unit 401 of the exclusive control device 40 transmits the X lock request to the update lock processing unit 404.

The update lock processing unit 404 confirms the lock type of the task entry of the lock column (L) of the resource entry because the information regarding the requested resource exists in the exclusive control table 50 (Yes in step S201) (step S202). .. Since the lock type of the task that locks the resource is not X-lock (No in step S202), the update lock processing unit 404 creates a lock deletion notification, and all information processing is performed via the lock table control unit 402. It transmits to the apparatus 10 (step S203). Then, the update lock processing unit 404 waits for a response from the information processing device 10.

The exclusive control device communication unit 202 determines whether the received notification is addressed to the request source (step S501). Since it is not addressed to the request source (No in step S501), the exclusive control device communication unit 202 determines whether or not the notification is added (step S503). Here, since it is not an addition (No in step S503), the exclusive control device communication unit 202 deletes the information about the resource from the lock table 30 (step S504). Then, the exclusive control device communication unit 202 transmits the update completion to the exclusive control device 40 (step S506).

Upon receiving the responses from all the information processing devices 10, the update lock processing unit 404 deletes the pseudo entry (step S204).

Then, the update lock processing unit 404 confirms whether or not there is a task in the lock row (L) (step S212).

Since there is a task (Yes in step S212), the update lock processing unit 404 adds the task entry of the task requesting the X lock to the resource entry queue (W) (step S209).

Then, the update lock processing unit 404 transmits a lock wait response to the information processing apparatus 10 that has transmitted the X lock request via the lock table control unit 402 (step S210).

Since the response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 transmits the response to the request source (step S502).

(6) X lock request (when S lock is not unlocked after X lock is unlocked)
FIG. 11 is a sequence diagram showing an example of an operation related to an X lock request for a resource without an S lock and an X lock according to the first embodiment. Specifically, the operation described below is an operation started from the state after “(3) unlocking the S lock” described with reference to FIG.

First, a request source (for example, a task) sends an X lock request for a resource to the lock control unit 20.

Since the request is not the S lock request (No in step S401), the lock control unit 20 transmits the X lock request to the exclusive control device 40 (step S407).

Upon receiving the X lock request, the command distribution unit 401 of the exclusive control device 40 transmits the X lock request to the update lock processing unit 404.

The update lock processing unit 404 confirms the lock type of the task entry of the lock column (L) of the resource entry because the information regarding the requested resource exists in the exclusive control table 50 (Yes in step S201) (step S202). .. Since the resource is not an X lock (No in step S202), the update lock processing unit 404 creates a lock deletion notification and sends it to the information processing device 10 via the lock table control unit 402 (step S203). Then, the update lock processing unit 404 waits for a response from the information processing device 10.

The exclusive control device communication unit 202 determines whether the received notification is addressed to the request source (step S501). Since it is not addressed to the request source (No in step S501), the exclusive control device communication unit 202 determines whether or not the notification is added (step S503). Here, since it is not an addition (No in step S503), the exclusive control device communication unit 202 deletes the information about the resource from the lock table 30 (step S504). Then, the exclusive control device communication unit 202 transmits the update completion to the exclusive control device 40 (step S506).

Upon receiving the responses from all the information processing devices 10, the update lock processing unit 404 deletes the pseudo entry (step S204).

Then, the update lock processing unit 404 confirms whether or not there is a task in the lock row (L) (step S212).

Since there is no task (No in step S212), the update lock processing unit 404 adds the task entry of the task requesting the X lock to the lock row (L) of the resource entry (step S207). Then, the update lock processing unit 404 transmits a lock success response to the information processing apparatus 10 that has transmitted the X lock request via the lock table control unit 402 (step S208).

Since the response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 transmits the response to the request source (step S502).

(7) X lock request (when X locked)
FIG. 19 is a sequence diagram showing an example of an operation relating to an X lock request for an X locked resource according to the first embodiment.

First, a request source (for example, a task) sends an X lock request for a resource to the lock control unit 20.

Since the request is not the S lock request (No in step S401), the lock control unit 20 transmits the X lock request to the exclusive control device 40 (step S407).

Upon receiving the X lock request, the command distribution unit 401 of the exclusive control device 40 transmits the X lock request to the update lock processing unit 404.

The update lock processing unit 404 confirms the lock type of the task entry of the lock column (L) of the resource entry because the information regarding the requested resource exists in the exclusive control table 50 (Yes in step S201) (step S202). .. Since the resource is X-locked (Yes in step S202), the update lock processing unit 404 adds the task entry of the task requesting the X-lock to the queue (W) of the resource entry (step S209).

Then, the update lock processing unit 404 transmits a lock wait response to the information processing apparatus 10 that has transmitted the X lock request via the lock table control unit 402 (step S210).

Since the response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 transmits the response to the request source (step S502).

(8) S lock request (for X locked resource)
FIG. 20 is a sequence diagram showing an example of an operation relating to an S lock request for an X-locked resource in the first embodiment.

First, a request source (for example, a task) sends an S lock request for a resource to the lock control unit 20.

The lock control unit 20 confirms the registration state of the resource-related information in the lock table 30.

That is, since the request is the S lock request (Yes in step S401), the lock control unit 20 searches the lock table 30 (step S402).

Since the information regarding the requested resource is not registered in the lock table 30 (No in step S403), the lock control unit 20 adds the unacknowledged information and transmits the S lock request to the exclusive control device 40. Yes (step S405). That is, the lock control unit 20 transmits the S lock request (not responded) to the exclusive control device 40.

The command distribution unit 401 of the exclusive control device 40 that has received the S lock request (not responded) transmits the S lock request to the reference lock processing unit 403.

Since the information on the resource of the S lock request exists in the exclusive control table 50 (Yes in step S101), the reference lock processing unit 403 checks the lock type that locks the resource (step S108).

In this case, since the lock type is X-lock (Yes in step S108), the reference lock processing unit 403 adds the task entry of the requested task to the queue (W) (step S112).

Then, the reference lock processing unit 403 transmits a lock wait response to the information processing apparatus 10 that has transmitted the S lock request via the lock table control unit 402 (step S113).

Since the received response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 of the information processing device 10 transmits the response to the request source (step S502).

(9) S lock request (when X lock is unlocked after X lock)
FIG. 21 is a sequence diagram showing an example of an operation relating to an S lock request for a resource unlocked after being X-locked in the first embodiment.

First, a request source (for example, a task) sends an S lock request for a resource to the lock control unit 20.

Since the lock control unit 20 is the S lock request (Yes in step S401), the lock control unit 20 searches the lock table 30 (step S402).

The lock control unit 20 confirms the registration state of the resource-related information in the lock table 30.

Since the information regarding the resource is not registered in the lock table 30 (No in step S403), the lock control unit 20 adds the unacknowledged information and transmits the S lock request to the exclusive control device 40 (step S403). S406). That is, the lock control unit 200 transmits the S lock request (not responded) to the exclusive control device 40.

The command distribution unit 401 of the exclusive control device 40 that has received the S lock request (not responded) transmits the S lock request to the reference lock processing unit 403.

The reference lock processing unit 403 checks whether or not there is an X lock in the lock column (L) of the resource entry because the exclusive control table 50 has information regarding the requested resource (Yes in step S101) (step S108). ). In this case, since there is no X lock in the lock column (L) (No in step S108), the reference lock processing unit 403 adds the task entry to the lock column (L) of the exclusive control table 50 (step S109). ..

Then, the reference lock processing unit 403 confirms whether or not a response has been made (step S110).

Since the response has not been received (No in step S110), the reference lock processing unit 403 transmits a response of the lock success to the information processing apparatus 10 that has transmitted the S lock request via the lock table control unit 402 (step S111). ). Then, the reference lock processing unit 403 ends the process.

Since the received response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 of the information processing device 10 transmits the response to the request source (step S502).

(10) X lock request (for unregistered resources)
FIG. 22 is a sequence diagram showing an example of an operation relating to an X lock request for an unregistered resource according to the first embodiment.

First, a request source (for example, a task) sends an X lock request for a resource to the lock control unit 20.

Since the request is not the S lock request (No in step S401), the lock control unit 20 transmits the X lock request to the exclusive control device 40 (step S407).

Upon receiving the X lock request, the command distribution unit 401 of the exclusive control device 40 transmits the X lock request to the update lock processing unit 404.

The update lock processing unit 404 registers the information on the resource in the exclusive control table 50 (step S206) because the information on the requested resource does not exist in the exclusive control table 50 (No in step S201).

Then, the update lock processing unit 404 registers the task entry of the requested task (X lock task entry) in the lock row (L) (step S207).

Then, the update lock processing unit 404 transmits a lock success response to the information processing apparatus 10 via the lock table control unit 402.

Since the received response is addressed to the request source (Yes in step S501), the exclusive control device communication unit 202 of the information processing device 10 transmits the response to the request source (step S502).

[Explanation of effect]
Next, the effect of the first embodiment will be described.

The information processing system 100 according to the first embodiment has an effect of reducing the time required for communication between the information processing device 10 and the exclusive control device 40.

The reason is as follows.

When the exclusive control device 40 receives the S lock request for the resource whose information is not registered in the lock table 30, the exclusive control device 40 transmits a lock registration notification to all the information processing devices 10. The exclusive control device 40 particularly executes the above-described processing for the S resource.

Based on this notification, the lock control unit 20 (exclusive control device communication unit 202) of the information processing device 10 saves the information on the S-locked resource in the lock table 30.

Then, when the lock control unit 20 (command analysis unit 201) of the information processing device 10 receives an S lock request for the resource whose information is registered in the lock table 30 from the request source, it sends the request to the exclusive control device 40. Send a lock success response to the requestor. In this way, the lock control unit 20 according to the first embodiment can reduce the time required for communication with the exclusive control device 40 regarding the S-lock of the resource, and can transmit a lock success response to the request source. ..

As a result, the request source of the information processing device 10 can reduce the operation time.

In this way, the information processing system 100 can reduce the operation time of the information processing device 10.

Further, the command analysis unit 201, after responding to the request source, transmits “S lock request (already answered)” to the exclusive control device 40. The exclusive control device 40 corrects the information regarding the resources in the exclusive control table 50 based on this request. However, the exclusive control device 40 does not respond to the information processing device 10. Therefore, the exclusive control device 40 can reduce the time required for response communication and processing.

Further, the information processing device 10 does not need to perform the operation corresponding to the response from the exclusive control device 40. Therefore, the information processing device 10 can reduce the time required for response communication and processing.

<Other embodiments>
In the above description, the information processing system 100 has been described as including one exclusive control device 40. However, the information processing system 100 may include a plurality of exclusive control devices 40. In this case, the exclusive control device 40 may share the resource and control the exclusive processing of the resources.

Further, in the above description, the lock control unit 20 has been described as including the lock table 30. However, in the information processing device 10, the position of the lock table 30 is not limited to the lock control unit 20. For example, the lock table 30 may be included in another configuration, for example, the OS. In this case, the OS may include a function corresponding to the lock control unit 20.

<Outline of Embodiment>
FIG. 17 is a block diagram showing an example of the configuration of the information processing system 101 which is the minimum configuration of the information processing system 100 according to the present invention.

The information processing system 101 includes a plurality of information processing devices 11 and an exclusive control device 41.

The information processing device 11 includes a request processing unit 211 and a resource information processing unit 212. An example of the request processing unit 211 is the command analysis unit 201. An example of the resource information processing unit 212 is the exclusive control device communication unit 202.

The exclusive control device 41 also includes an information communication unit 412 and a reference lock processing unit 413. An example of the information communication unit 412 is the lock table control unit 402. An example of the reference lock processing unit 413 is the reference lock processing unit 403.

The reference lock processing unit 413 receives a reference lock request, which is a request for referring to a resource, from the information processing device 11. An example of the reference lock request is a reference lock request (not responded) and a reference lock (responded).

Then, the reference lock processing unit 413 does not hold the information on the resource corresponding to the reference lock request, but saves the information on the predetermined resource when the resource is the predetermined resource. One example of the predetermined resource is the S resource. In addition, an example of information regarding a predetermined resource is a pseudo entry.

Then, the reference lock processing unit 413 creates the first notification corresponding to the predetermined resource. An example of the first notification is a lock registration notification.

Then, the reference lock processing unit 413 receives the first response to the first notification from the information processing device 11. An example of the first response is an update completion response.

Then, the reference lock processing unit 413 stores the first information regarding access to the resource. An example of the first information is a task entry.

Then, the reference lock processing unit 413 creates a second response regarding the resource. An example of the second response is a lock success response.

Further, the reference lock processing unit 413 holds information regarding the resource corresponding to the reference lock request, and when the resource is locked as a reference and the reference lock request includes information indicating that the response has been completed, the resource corresponding to the reference lock request. Save the first information about. An example of the reference lock request including the information indicating that the response has been completed is the reference lock request (response completed).

Further, the reference lock processing unit 413 holds information regarding the resource corresponding to the reference lock request, and when the resource is locked as a reference and the reference lock request includes information indicating that no response has been received, the resource corresponding to the reference lock request. Save the first information about. Then, the reference lock processing unit 413 creates a second response regarding the resource. An example of a reference lock request including information indicating non-response is a reference lock request (non-response).

The information communication unit 412 transmits the first notification to the plurality of information processing devices 11.

The information communication unit 412 transmits the second response to the information processing device 11 that has transmitted the reference lock request.

The request processing unit 211 receives a reference lock request regarding a resource from a predetermined request source. An example of a request source is a task.

The request processing unit 211 transmits the third response corresponding to the reference lock request to the request source when the second information regarding the resource corresponding to the reference lock request is stored. An example of the second information is the resource ID stored in the lock table 30. Further, an example of the third response is a response to the task.

Then, the request processing unit 211 creates a reference lock request including information indicating that the response has been completed based on the reference lock request, and transmits the reference lock request to the exclusive control device 41.

Further, when the second information regarding the resource corresponding to the reference lock request is not stored, the request processing unit 211 creates a reference lock request including information indicating a non-response based on the reference lock request to perform exclusive control. To the device 41.

When receiving the first notification from the exclusive control device 41, the resource information processing unit 212 saves the second information corresponding to the first notification and transmits the first response to the exclusive control device 41.

Further, when the resource information processing unit 212 receives the second response from the exclusive control device 41, the resource information processing unit 212 transmits the second response to the request source.

Like the information processing system 100, the information processing system 101 configured in this way has the effect of reducing the time required for communication between the information processing apparatus 11 and the exclusive control device 41.

The reason is that the information processing apparatus 11 and the exclusive control apparatus 41 included in the information processing system 101 use the above configuration and the information processing apparatus 10 and the exclusive control in the reference lock for the resource in which the third information is stored. This is for performing the same operation as the device 40.

<Modification>
The configurations of the information processing device 10, the information processing device 11, the exclusive control device 40, and/or the exclusive control device 41 described above will be described using the information processing device 10 and the exclusive control device 40. In the following description, the information processing device 10 and/or the exclusive control device 40 can be replaced with the information processing device 11 and/or the exclusive control device 41.

For example, each component of the information processing device 10 and/or the exclusive control device 40 may be configured by a hardware circuit.

Further, in the information processing device 10 and/or the exclusive control device 40, each component may be configured using a plurality of devices connected via a network.

In addition, in the information processing device 10 and/or the exclusive control device 40, the plurality of configuration units may be configured by one piece of hardware.

Further, the information processing device 10 and/or the exclusive control device 40 may be realized as a computer device including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The information processing device 10 and the exclusive control device 40 are realized as a computer device including an input/output connection circuit (IOC: Input/Output Circuit) and a network interface circuit (NIC) in addition to the above configuration. May be.

FIG. 18 is a block diagram showing an example of the configuration of an information processing device 600 which is a modification of the information processing device 10 and/or the exclusive control device 40 in the present invention.

The information processing device 600 includes a CPU 610, a ROM 620, a RAM 630, an internal storage device 640, an IOC 650, and a NIC 680, and constitutes a computer device.

The CPU 610 reads the program from the ROM 620. Then, the CPU 610 controls the RAM 630, the internal storage device 640, the IOC 650, and the NIC 680 based on the read program. Then, the computer including the CPU 610 controls these configurations and realizes each function as the information processing device 10 and/or the exclusive control device 40. That is, the computer including the CPU 610 realizes the functions of the command analysis unit 201 and the exclusive control device communication unit 202 illustrated in FIG. Alternatively, the computer including the CPU 610 realizes the functions of the command distribution unit 401, the lock table control unit 402, the reference lock processing unit 403, the update lock processing unit 404, and the unlock processing unit 405 illustrated in FIG. To do.

The CPU 610 may use the RAM 630 or the internal storage device 640 as a temporary storage medium of a program when implementing each function.

Further, the CPU 610 may read the program included in the storage medium 700 that stores the program in a computer-readable manner by using a storage medium reading device (not shown). Alternatively, the CPU 610 may receive a program from an external device (not shown) via the NIC 680, store the program in the RAM 630, and operate based on the stored program.

The ROM 620 stores programs executed by the CPU 610 and fixed data. The ROM 620 is, for example, a P-ROM (Programmable-ROM) or a flash ROM.

The RAM 630 temporarily stores programs and data executed by the CPU 610. The RAM 630 is, for example, a D-RAM (Dynamic-RAM).

The internal storage device 640 stores data and programs that the information processing device 600 stores for a long time. Further, the internal storage device 640 may operate as a temporary storage device of the CPU 610. The internal storage device 640 is, for example, a hard disk device, a magneto-optical disk device, an SSD (Solid State Drive), or a disk array device. The internal storage device 640 operates as the lock table 30 and/or the exclusive control table 50.

Here, the ROM 620 and the internal storage device 640 are non-transitory storage media. On the other hand, the RAM 630 is a volatile (transitory) storage medium. The CPU 610 can operate based on the programs stored in the ROM 620, the internal storage device 640, or the RAM 630. That is, the CPU 610 can operate using a non-volatile storage medium or a volatile storage medium.

The IOC 650 mediates data between the CPU 610 and the input device 660 and the display device 670. The IOC 650 is, for example, an IO interface card or a USB (Universal Serial Bus) card. Furthermore, the IOC 650 is not limited to a wired line such as USB, but may be wireless.

The input device 660 is a device that receives an input instruction from the operator of the information processing device 600. The input device 660 is, for example, a keyboard, a mouse, or a touch panel.

The display device 670 is a device that displays information to the operator of the information processing device 600. The display device 670 is, for example, a liquid crystal display.

The NIC 680 relays data exchange with another device (the information processing device 10 or the exclusive control device 40) not shown in the figure via the network. The NIC 680 is, for example, a LAN (Local Area Network) card. Furthermore, the NIC 680 is not limited to being wired and may be wireless. The NIC 680 operates as a part of the command analysis unit 201 and the exclusive control device communication unit 202. Alternatively, the NIC 680 operates as a part of the command distribution unit 401 and the lock table control unit 402.

The information processing device 600 configured in this way can obtain the same effects as the information processing device 10 and/or the exclusive control device 40.

The reason is that the CPU 610 of the information processing device 600 can realize the same function as the information processing device 10 and/or the exclusive control device 40 based on the program.

Note that the information processing device 600 may realize both functions as the information processing device 10 and the exclusive control device 40. For example, the CPU 610 of the information processing device 600 may execute both the program that implements the function of the information processing device 10 and the program that implements the function of the exclusive control device 40 in parallel.

Further, the information processing device 600 may realize the functions of the plurality of information processing devices 10. For example, the CPU 610 of the information processing device 600 may execute a plurality of programs that realize the functions of the information processing device 10 in parallel.

Although the present invention has been described with reference to the exemplary embodiments, the present invention is not limited to the above exemplary embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

The present invention can be applied to a loosely coupled computer system.

10 information processing device 11 information processing device 20 lock control unit 30 lock table 40 exclusive control device 41 exclusive control device 50 exclusive control table 100 information processing system 101 information processing system 201 command analysis unit 202 exclusive control device communication unit 211 request processing unit 212 Resource information processing unit 401 Command distribution unit 402 Lock table control unit 403 Reference lock processing unit 404 Update lock processing unit 405 Unlock processing unit 412 Information communication unit 413 Reference lock processing unit 600 Information processing device 610 CPU
620 ROM
630 RAM
640 Internal storage device 650 IOC
660 Input device 670 Display device 680 NIC
700 storage medium

Claims (9)

In an information processing system including a plurality of information processing devices and an exclusive control device that executes exclusive control on resources accessed by the information processing device,
The exclusive control device,
A request for referencing the resource from the information processing device, receiving a reference lock request including a task ID indicating a task that is a requesting source of the request,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information about the resource to the lock table of the information processing device, the first notification indicating that the resource is locked as a reference is created and transmitted to all the information processing devices, A first response to the first notification is received from the information processing device, and as the first information on access to the resource, the task ID and the exclusive control table, which is data indicating lock information of the resource, A task entry including a lock type and a next task is stored for each resource of the request target in a lock column indicating the task for which lock is successful or a column indicating the task waiting for lock, and Create 2 responses,
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, locking the resource as a reference, and including the information indicating that the reference lock request has been answered Save the
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, the resource is locked as a reference, and the reference lock request includes information indicating an unreply And a reference lock processing unit for creating the second response regarding the resource,
Transmitting the first notification to the plurality of information processing devices,
An information communication unit that transmits the second response to the information processing apparatus that has transmitted the reference lock request,
The information processing device is
Receiving the reference lock request for the resource from a predetermined request source,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and the response is based on the reference lock request. Creating the reference lock request including information indicating the completion and transmitting it to the exclusive control device,
When the second information related to the resource corresponding to the reference lock request is not stored, the exclusive control device creates the reference lock request including the information indicating the non-response based on the reference lock request. Request processing means to send to
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
An information processing system including: a resource information processing unit that transmits the second response to the request source when the second response is received from the exclusive control device. The exclusive control device,
Receiving an update lock request, which is a request for updating the resource, from the information processing device,
Creating a second notification corresponding to the update lock request, receiving a first response corresponding to the second notification from the information processing device, deleting information about the predetermined resource, Including update lock processing means for storing the first information and creating a second response for said resource;
The information communication unit transmits the second notification to a plurality of the information processing devices,
The information processing system according to claim 1, wherein the resource information processing unit deletes the second information corresponding to the second notification and transmits the first response to the exclusive control device. A request for referencing a resource from the information processing device, and a reference lock request including a task ID indicating a task that is the request source of the request is received,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information regarding the resource to the lock table of the information processing device to be processed, a first notification indicating that the resource is locked as a reference is created and transmitted to all information processing devices. A first response to the first notification is received from the device, and the task ID and the lock type are stored in the exclusive control table, which is data indicating lock information of the resource, as the first information regarding access to the resource. , A next task, and a task entry including a next task are stored in a lock column indicating the task that has been successfully locked or a column indicating the task that is waiting for the lock, for each resource of the request target, and a second response regarding the resource is stored. Create
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, locking the resource as a reference, and including the information indicating that the reference lock request has been answered Save the
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, the resource is locked as a reference, and the reference lock request includes information indicating an unreply And create the second response for the resource,
Transmitting the first notification to a plurality of information processing devices,
In an information processing system including an exclusive control device, which transmits the second response to the information processing device which has transmitted the reference lock request,
Receiving the reference lock request from a predetermined request source,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and the response is based on the reference lock request. Creating the reference lock request including information indicating the completion and transmitting it to the exclusive control device,
When the second information related to the resource corresponding to the reference lock request is not stored, the exclusive control device is created by creating the reference lock request including the information indicating the non-response based on the reference lock request. Request processing means to send to
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
And a resource information processing unit that transmits the second response to the request source when the second response is received from the exclusive control device. A request for referencing a resource related to a resource from a predetermined request source, and receiving a reference lock request including a task ID indicating a task that is a request source requesting the request,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and a response has been made based on the reference lock request. Creating the reference lock request including information indicating
When the second information related to the resource corresponding to the reference lock request is not stored, the reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. Then
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
In an information processing system including a plurality of information processing devices, which transmits the second response to the request source when a second response is received from the exclusive control device,
Receiving the reference lock request from the information processing device,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information regarding the resource to the lock table of the information processing device, the first notification indicating that the resource is locked as a reference is created and transmitted to all the information processing devices. , The first response to the first notification from the information processing device is received, and the task ID is stored in the exclusive control table, which is data indicating lock information of the resource, as the first information regarding access to the resource. And a task type including a lock type and a next task are stored for each resource as a request target in a lock column indicating the task with a successful lock or a column indicating the task waiting for the lock, and the resource Create the second response for
The first information corresponding to the reference lock request is held when the information about the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the reference lock request includes information indicating the response completion. Save the information,
When the resource is held as a reference and the reference lock request includes the information indicating the non-response, the first information corresponding to the reference lock request is held, Reference lock processing means for storing information and creating the second response for the resource;
Transmitting the first notification to the plurality of information processing devices,
And an information communication unit that transmits the second response to the information processing apparatus that has transmitted the reference lock request. In an information processing system including a plurality of information processing devices and an exclusive control device that executes exclusive control on resources accessed by the information processing device,
The exclusive control device,
A request for referencing the resource from the information processing device, receiving a reference lock request including a task ID indicating a task that is a requesting source of the request,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information about the resource to the lock table of the information processing device, the first notification indicating that the resource is locked as a reference is created and transmitted to all the information processing devices, A first response to the first notification is received from the information processing device, and as the first information on access to the resource, the task ID and the exclusive control table, which is data indicating lock information of the resource, A task entry including a lock type and a next task is stored for each resource of the request target in a lock column indicating the task for which lock is successful or a column indicating the task waiting for lock, and Create 2 responses,
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, locking the resource as a reference, and including the information indicating that the reference lock request has been answered Save the
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, the resource is locked as a reference, and the reference lock request includes information indicating an unreply And create the second response for the resource,
Transmitting the first notification to the plurality of information processing devices,
Transmitting the second response to the information processing apparatus that has transmitted the reference lock request,
The information processing device is
Receiving the reference lock request for the resource from a predetermined request source,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and the response is based on the reference lock request. Creating the reference lock request including information indicating the completion and transmitting it to the exclusive control device,
When the second information related to the resource corresponding to the reference lock request is not stored, the exclusive control device is created by creating the reference lock request including the information indicating the non-response based on the reference lock request. Sent to
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
An information processing method for transmitting the second response to the request source when the second response is received from the exclusive control device. A request for referencing a resource from the information processing device, and a reference lock request including a task ID indicating a task that is the request source of the request is received,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information regarding the resource to the lock table of the information processing device to be processed, a first notification indicating that the resource is locked as a reference is created and transmitted to all information processing devices. A first response to the first notification is received from the device, and the task ID and the lock type are stored in the exclusive control table, which is data indicating lock information of the resource, as the first information regarding access to the resource. , A next task, and a task entry including a next task are stored in a lock column indicating the task that has been successfully locked or a column indicating the task that is waiting for the lock, for each resource of the request target, and a second response regarding the resource is stored. Create
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, locking the resource as a reference, and including the information indicating that the reference lock request has been answered Save the
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, the resource is locked as a reference, and the reference lock request includes information indicating an unreply And create the second response for the resource,
Transmitting the first notification to a plurality of information processing devices,
In an information processing system including an exclusive control device, which transmits the second response to the information processing device which has transmitted the reference lock request,
The information processing device
Receiving the reference lock request from a predetermined request source,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and the response is based on the reference lock request. Creating the reference lock request including information indicating the completion and transmitting it to the exclusive control device,
When the second information related to the resource corresponding to the reference lock request is not stored, the exclusive control device is created by creating the reference lock request including the information indicating the non-response based on the reference lock request. Sent to
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
An information processing method for transmitting the second response to the request source when the second response is received from the exclusive control device. A request for referencing a resource related to a resource from a predetermined request source, and receiving a reference lock request including a task ID indicating a task that is a request source requesting the request,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and a response has been made based on the reference lock request. Creating the reference lock request including information indicating
When the second information related to the resource corresponding to the reference lock request is not stored, the reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. Then
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
In an information processing system including a plurality of information processing devices, which transmits the second response to the request source when a second response is received from the exclusive control device,
The exclusive control unit
Receiving the reference lock request from the information processing device,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information regarding the resource to the lock table of the information processing device, the first notification indicating that the resource is locked as a reference is created and transmitted to all the information processing devices. , The first response to the first notification from the information processing device is received, and the task ID is stored in the exclusive control table, which is data indicating lock information of the resource, as the first information regarding access to the resource. And a task type including a lock type and a next task are stored for each resource as a request target in a lock column indicating the task with a successful lock or a column indicating the task waiting for the lock, and the resource Create the second response for
The first information corresponding to the reference lock request is held when the information about the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the reference lock request includes information indicating the response completion. Save the information,
When the resource is held as a reference and the reference lock request includes the information indicating the non-response, the first information corresponding to the reference lock request is held, Storing information and creating the second response for the resource,
Transmitting the first notification to the plurality of information processing devices,
An exclusive control method of transmitting the second response to the information processing apparatus that has transmitted the reference lock request. A request for referencing a resource from the information processing device, and a reference lock request including a task ID indicating a task that is the request source of the request is received,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information regarding the resource to the lock table of the information processing device to be processed, a first notification indicating that the resource is locked as a reference is created and transmitted to all information processing devices. A first response to the first notification is received from the device, and the task ID and the lock type are stored in the exclusive control table, which is data indicating lock information of the resource, as the first information regarding access to the resource. , A next task, and a task entry including a next task are stored in a lock column indicating the task that has been successfully locked or a column indicating the task that is waiting for the lock, for each resource of the request target, and a second response regarding the resource Create
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, locking the resource as a reference, and including the information indicating that the reference lock request has been answered Save the
The first information corresponding to the reference lock request, when holding the information about the resource corresponding to the reference lock request, the resource is locked as a reference, and the reference lock request includes information indicating an unreply And create the second response for the resource,
Transmitting the first notification to a plurality of information processing devices,
In an information processing system including an exclusive control device, which transmits the second response to the information processing device which has transmitted the reference lock request,
A process of receiving the reference lock request from a predetermined request source,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and the response is based on the reference lock request. A process of creating the reference lock request including information indicating completion and transmitting the reference lock request to the exclusive control device;
When the second information related to the resource corresponding to the reference lock request is not stored, the exclusive control device is created by creating the reference lock request including the information indicating the non-response based on the reference lock request. Process to send to
A process of storing the second information corresponding to the first notification and transmitting the first response to the exclusive control device when the first notification is received from the exclusive control device;
A program for causing a computer to execute a process of transmitting the second response to the request source when the second response is received from the exclusive control device. A request for referencing a resource related to a resource from a predetermined request source, and receiving a reference lock request including a task ID indicating a task that is a request source requesting the request,
When the second information regarding the resource corresponding to the reference lock request is stored, a third response corresponding to the reference lock request is transmitted to the request source, and a response has been made based on the reference lock request. Creating the reference lock request including information indicating
When the second information related to the resource corresponding to the reference lock request is not stored, the reference lock request including information indicating non-response is created based on the reference lock request and transmitted to the exclusive control device. Then
When the first notification is received from the exclusive control device, the second information corresponding to the first notification is stored, and the first response is transmitted to the exclusive control device,
In an information processing system including a plurality of information processing devices, which transmits the second response to the request source when a second response is received from the exclusive control device,
A process of receiving the reference lock request from the information processing device,
When the resource is the predetermined resource without storing the information on the resource corresponding to the reference lock request, the information on the predetermined resource is stored, and the information on the resource for which the reference lock is acquired is stored. In order to add information regarding the resource to the lock table of the information processing device, the first notification indicating that the resource is locked as a reference is created and transmitted to all the information processing devices. , The first response to the first notification from the information processing device is received, and the task ID is stored in the exclusive control table, which is data indicating lock information of the resource, as the first information regarding access to the resource. And a task type including a lock type and a next task are stored for each resource as a request target in a lock column indicating the task with a successful lock or a column indicating the task waiting for the lock, and the resource Creating the second response for
The first information corresponding to the reference lock request is held when the information about the resource corresponding to the reference lock request is held, the resource is locked as a reference, and the reference lock request includes information indicating the response completion. The process of saving information,
When the resource is held as a reference and the reference lock request includes the information indicating the non-response, the first information corresponding to the reference lock request is held, Storing information and creating the second response for the resource;
A process of transmitting the first notification to the plurality of information processing devices;
A program for causing a computer to execute a process of transmitting the second response to the information processing device that has transmitted the reference lock request.

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