JPH0334049A - Information processor - Google Patents

Abstract

PURPOSE:To attain the communication with lock with a small hardware quantity without deteriorating the communication performance by producing a carry- about code to the communication with lock to carry about this code production information between a lock process and a communication process and reflecting the lock deciding result when the coincidence is obtained between both processes. CONSTITUTION:The arithmetic processors 400 and 500 and the input/output devices 300 and 600 are connected to the system controllers 100 and 200 respectively. Then the carry-about information generating means 104 and 204 produce the carry-about codes at reception of the communication with lock. This code production information is carried about between a lock process and a communication process. These two processes are finally compared with each other and the lock deciding result is reflected when the coincidence is obtained between both processes. Thus, it is possible to carry out the communication with lock with a small hardware quantity without deteriorating the communication performance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is used for communication between processing units of a plurality of system control units to which arithmetic processing units and input/output processing units are connected. The present invention relates to a device that can perform communication processing simultaneously with processor access and execute communication when locking is successful.

〔Music required〕

The present invention generates a rotating code for locked communication in an information processing device configured by a plurality of system control devices connected to an arithmetic processing unit and an input/output device and processing mutual communication requests, By passing this information between both lock processing and communication processing, and finally comparing the two and reflecting the lock judgment result when they match, you can create a system with a lock using less hardware without degrading communication performance. It is designed to enable communication.

[Conventional technology]

As shown in FIG. 2, in the conventional example, an arithmetic processing unit 400
and input/output device 300 is one system control device 10
0, arithmetic processing unit 500 and input/output device 6
00 is connected to the other system control device 200.

When a certain processing device wishes to communicate with another processing device, that processing device sends a communication request to its connected system control device. The system control device that receives the request sends the communication contents to the processing device connected to itself, and also sends out the fact that the communication occurred and its contents to the other system control device. When the system control device of the other system receives the information, it sends the communication contents to the processing device connected to itself.

In this way, a communication from one request source is sent to all processing devices, and the processing device that receives the communication checks whether the communication is for itself, and if it is for itself, it rejects the communication. , and performs operations according to its contents.

During communication, many devices lock each other to achieve exclusive control so that only one communication can take place at a time, but if the locking and communication operations are performed separately, Since this poses a performance problem, there are many methods that process these at the same time.

In FIG. 2, the arithmetic processing device 400 is the input/output device 600.
An example of communicating with .

A communication request from the arithmetic processing unit 400 is accepted by the acceptance means 102 of the system control unit 100, and the communication request is accepted by the acceptance register 1.
03, and lock processing is performed prior to communication processing. In other words, lock information receiver i1.11.11
At step 2, the lock information from the other system is received simultaneously with the lock information from the own system, and the lock control unit 113 determines whether the lock can be acquired in both systems together, and this result is sent to the lock information holding means 121.

During this time, communication information is passed around to communication registers 110 and 120. After that, if the lock is successful according to the lock result, the communication register 130,! The data is sent to the communication buffer 132, the communication register 231 of the other system, and the communication buffer 233, and communication processing is performed, and if unsuccessful, these communication processing is canceled.

[Problem that the invention seeks to solve]

In the conventional inter-processor communication with lock mentioned above,
It is configured to start communication processing after the lock result is known, and since it takes time to synchronize the lock result among multiple system control devices, communication processing also takes time. The disadvantage is that communication information must be carried around and the amount of hardware increases.

The present invention aims to eliminate such drawbacks and to provide a device that can perform locked communication with less hardware without degrading communication performance.

[Means for solving problems]

The present invention includes a plurality of system control devices that are connected between an arithmetic processing unit and an input/output device and process communication requests between the arithmetic processing units and the input/output devices; communication processing information transmitting means that accepts communication requests from the arithmetic processing unit and the input/output device and transmits the information when communication processing is required based on communication request information of another system; In the information processing device, the system control device is provided with communication processing means for performing communication processing to the arithmetic processing unit and the input/output device of the system, and locking means for performing exclusive control over the communication. A rotation information generation means that generates a rotation code in response to a request when a request arrives, a rotation means that circulates the information together with communication information and lock information within the own system and between the own system and other systems, and communication information generation means during communication. The device also includes means for comparing the rotation code passed around with the lock information, referring to the lock result when the comparison result matches, and canceling the communication when the lock is not successful. Features.

[Effect]

Add rotation information to communications with a lock, and rotate that information independently for lock processing and communication processing,
These processes are performed in parallel and compared before the final communication, and if the information matches, the lock result is followed, and if the lock is "successful", the communication is executed as is, and if it is "failure" At some point, cancel the communication.

This eliminates the need to start communication processing after the lock result is known, reduces the time required to synchronize multiple system control devices, and enables locking with less hardware without degrading communication performance. communication can be realized.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

In the embodiment of the present invention, arithmetic processing units 400 and 500 and input/output devices 300 and 600 are connected to system control units 100 and 200, respectively. The system control devices 100 and 200 include an arithmetic processing device 40 of its own system.
reception means 101.102 and 201 that accept communication requests from 0.0.500 and input/output devices 300.600;
．． 202, reception registers 103 and 203 that transmit information when communication processing is required based on communication request information of another system, and communication processing to the arithmetic processing unit 400.500 and input/output device 300.600 of the own system. Communication processing information transmission means constituted by communication registers 110.114 and 210.214, communication buffers 132.133 and 232.233, and communication buffer registers 140.240, and white arithmetic processing device 400 by these reception and transmission means. .500 and input/output device 300.
Arithmetic processing unit communication sending register 151.251 and input/output device communication sending register 1 that perform communication processing to 600
50.250, and lock information receiving means 111.250 that performs exclusive control over the communication.
112 and 2111212, lock control section 113.2
13, and lock means constituted by lock information holding means 121 and 221.

Furthermore, as a feature of the present invention, in order to perform exclusive control over communication, each system control device 1 uses lock synchronization.
00.200 is synchronized and the system is configured to appear as one locking mechanism, and in response to a communication request from a request source, the lock information is referenced and the communication request is sent only when the lock is successful. A system control device configured in The carrying means 160 and 260, which carry around together with the communication information and the lock information, compare the carrying code carried around with the communication information at the time of communication and the lock information, and when the comparison results match, the lock result is referred to, and the lock is successful. cancellation means 141 and 241 for invalidating the communication when the communication is not completed.

Next, the operation of the embodiment of the present invention configured as described above will be explained.

Communication requests from each processing device are received by receiving means 101.1 of the system control devices 100 and 200 connected to each processing device.
02 and 201.202 are accepted, and either an arithmetic processing device or an input/output device is selected and sent to acceptance registers 103 and 203.

Thereafter, lock processing is performed, and if the lock is successful, communication is performed with each processing device connected to each system control device, and if the lock is unsuccessful, communication is stopped.

Normally, when multiple system control devices are connected, lock information is stored in each device, so in order to perform exclusive control as a system, the lock information must always match and each system control device must have lock information. Even if lock requests are issued at the same time, the system must process them as one piece of lock information without contradiction. For this purpose, the lock information of each system control device is usually communicated to each other for synchronization. Therefore, it takes a considerable amount of time to determine whether the lock is correct or not.

The feature of the present invention is that when a communication with a lock is sent, a rotation code is generated by the rotation information generation means 104 and 204, and the information is transferred between both lock processing and communication processing, and finally the two are compared. The purpose is to reflect the lock judgment result when a match is found.

Next, the operation will be explained using a communication request from the arithmetic processing unit 400 as an example.

A locked communication request from the arithmetic processing unit 400 is received by the reception register 103 through the reception means 102.

At this time, a rotation code from rotation information generation means 104 is added. This information is also sent to the other system control device 200 along with communication information and lock information. Communication information is received by the communication register 214 of the system control device 200, and lock information is also received by the lock information reception register 212.

Among these, the communication information and the rotation code are stored in the communication buffer 232 for the other system, and the communication contents are read out to the communication buffer register 240 along with the buffer for the own system.
It is sent to each device from the communication sending register 250, 251 corresponding to each processing device.

In parallel with this process, the lock control unit 21 uses the lock information and the lock request information from the system control device 200 side.
3, it is determined whether the lock is correct or not, and the information is held in the lock information holding means 221.

This lock information holding means 221 holds the previous rotation information, and the cancellation means 241 compares this information with the rotation information read from the previous communication buffer. As a result, if these pieces of information match, the communication request is canceled by the cancellation means 241 based on the information on whether the lock is correct or not, and if it is "incorrect", the communication request is canceled by the cancellation means 241.

The above communication request is processed in the same way as in the other system described above. Lock determination is made by the system control device 2.
It is configured to perform the lock request sent from 00 and the lock request accompanying its own communication request through the same processing as other systems, and to obtain the same determination results as other systems. As with other systems, the communication information is read from the communication buffer, and before sending the communication, the rotation code is compared with the rotation code held in the lock information holding means, and if they match, the communication is started based on the lock result. Decide whether to send or cancel.

〔Effect of the invention〕

As explained above, according to the present invention, rotation information is added to a communication with a lock, and the information is carried around independently for lock processing and communication processing, and these processes are performed in parallel to finalize the communication. Before starting communication, if they match, the lock result is followed, if the lock is "successful", the communication is executed as is, and if the lock is "failure", the communication is canceled. This has the effect of realizing locked communication with less hardware without degrading performance.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a conventional example. 100.200...System control device, 101.10
2.201.202...Reception means, 103.203.
... Reception register, 104.204 ... Transfer information generation means, 110.114.120.130.131
, 210.214.220.230231... Communication register, 1115112.211.212... Lock information reception means, 113.213... Lock control unit, 1
21.221...Lock information holding means, 122.12
3.222.223.141.241... Cancellation means, 132.133.232.233... Communication buffer, 140.240... Communication buffer register, 15
0.250...I/O device communication sending register, 151
．． 251... Arithmetic processing unit communication sending register, 160
．． 260... Carrying means, 300600... Input/output processing device, 400.500... Arithmetic processing device.

Claims (1)

[Claims] 1. A plurality of system control devices connected between an arithmetic processing unit and an input/output device and processing communication requests between the arithmetic processing unit and the input/output device; , a communication processing information transmitting means that receives communication requests from the arithmetic processing unit and the input/output device of the own system, and transmits the information when communication processing is required based on communication request information of the other system; and this communication processing information. In the information processing device, the information processing device includes a communication processing means for performing communication processing to the arithmetic processing unit and the input/output device of its own system by a transmission means, and a locking means for performing exclusive control over the communication, the system control device comprising: A rotating information generating means for generating a rotating code in response to a communication request when a communication request arrives from a request source; a rotating means for rotating the information together with communication information and lock information within the own system and between the own system and other systems; Compares the lock information with the rotation code carried along with the communication information during communication, refers to the lock result when the comparison results match, and cancels the communication when the lock is not successful. An information processing device characterized by: