JPS5968062A - Process abnormality detection system - Google Patents

Process abnormality detection system

Info

Publication number
JPS5968062A
JPS5968062A JP57178819A JP17881982A JPS5968062A JP S5968062 A JPS5968062 A JP S5968062A JP 57178819 A JP57178819 A JP 57178819A JP 17881982 A JP17881982 A JP 17881982A JP S5968062 A JPS5968062 A JP S5968062A
Authority
JP
Japan
Prior art keywords
information processing
signal
call
processing device
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57178819A
Other languages
Japanese (ja)
Other versions
JPS6255172B2 (en
Inventor
Toshio Ishii
石井　敏雄
Toshiichiro Hatano
秦野　俊一朗
Yasuo Ito
泰男 伊藤
Tomo Nagao
長尾　朋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
KDDI Corp
Original Assignee
Fujitsu Ltd
Kokusai Denshin Denwa KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd, Kokusai Denshin Denwa KK filed Critical Fujitsu Ltd
Priority to JP57178819A priority Critical patent/JPS5968062A/en
Publication of JPS5968062A publication Critical patent/JPS5968062A/en
Publication of JPS6255172B2 publication Critical patent/JPS6255172B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
    • G06F11/0715—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in a system implementing multitasking

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)
  • Computer And Data Communications (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To prevent a resource in a decentralized control information interchange system from being held ineffectively by detecting a state dissidence between processes due to a communication failure state which occurs in a call process in its early stage. CONSTITUTION:If the communication failure state occurs between information processors A and B in a transfer process of data (c), a process P0' in the processor A sends out a disconnection request signal to a circuit L0. When a disconnection confirmation signal arrives from the circuit L0, the processor P0' is ceased. On the other hand, a process P1' in the processor B sends a reception ready signal to the process P0' and then detects a communication failure state because no reception ready signal is returned from the process P0', so a disconnection request signal is sent out to a circuit L1. The process P1' is ceased after a disconnection confirmation signal is returned from the circuit L1.

Description

【発明の詳細な説明】 ｌａｌ　　発明の技術分野 本発明はプロセス異常検出方式、特に相互に通信可能な
複数の情報処理装置から成り、任意の２情報処理装置内
の任意のプロセス間に呼を設定して情報転送を行う分散
制御情報交換システムにおけるプロセス異常検出方式に
関す。Detailed Description of the Invention: lal Technical Field of the Invention The present invention relates to a process abnormality detection method, and in particular to a method for detecting a process abnormality, which is comprised of a plurality of information processing devices capable of communicating with each other, and in which a call is established between any processes within any two information processing devices. This paper relates to a process abnormality detection method in a distributed control information exchange system that transfers information.

ｆｂｌ　　技術の背景 近年情報交換システムを相互に通信可能な複数の小型情
報処理装置に機能並びに負荷を分散する分散制御情報交
換システムが、広く採用されつつある。この種分散制御
情報交換システムに収容される回線相互間で情報転送の
要求（呼）が発生ずると、発信側回線および着信側回線
を収容する前記各情報処理装置が発生した呼に対応する
プロセスを設定し、両プロセスが協同して該呼の処理を
実行する。各プロセスは呼を制御する為の各種情報を格
納する呼制御テーブルを含む処理機構であり、前記各情
報処理装置内には生起する呼に相当する数の前記プロセ
スが生成され、呼の終了と共に消滅する。fbl Background of the Technology In recent years, distributed control information exchange systems that distribute functions and loads among a plurality of small-sized information processing devices that can communicate with each other have been widely adopted. When a request (call) for information transfer occurs between lines accommodated in this type of distributed control information exchange system, each information processing device accommodating the originating line and the terminating line processes a process corresponding to the call that has occurred. and both processes cooperate to process the call. Each process is a processing mechanism that includes a call control table that stores various information for controlling calls, and within each information processing device, as many processes as the number of calls that occur are generated, and when the call ends, Disappear.

ｆｃｌ　　従来技術と問題点 第１図は従来ある分散制御情報交換システムの一例を示
す図である。第１図においては、伝送路Ｃを介して相互
に通信可能な情報処理装置ＡおよびＢが示されている。fcl Prior Art and Problems FIG. 1 is a diagram showing an example of a conventional distributed control information exchange system. In FIG. 1, information processing devices A and B that can communicate with each other via a transmission path C are shown.

また第２図は、第１図における呼処理過程の一例を示す
図である。第２図において、情報処理装置Ａに収容され
る回線ＬＯから、情報処理装置Ｂに収容される回線Ｌｌ
に対す。Further, FIG. 2 is a diagram showing an example of the call processing process in FIG. 1. In FIG. 2, from a line LO accommodated in information processing device A to a line Ll accommodated in information processing device B,
against.

る発呼要求信号ａが到来すると、情報処理装置Ａは該発
呼要求信号ａに対応するプロセスＰＯを生成し、伝送路
Ｃを介して情報処理装置Ｂに発呼要求信号ａを伝達する
。情報処理装置Ｂは該発呼要求信号ａに対応するプロセ
スＰ１を生成し、回線Ｌｌに発呼要求信号ａを送出する
。以上により回線ＬＯおよび５１間に設定された呼は、
プロセスＰＯおよびＰｌにより制御される。回線ＬＯは
、回線Ｌ１から接続可信号すがプロセスＰ１およびＰＯ
を経由して返送されるのを確認した後、情報処理装置Ａ
およびＢを介してデータＣの転送を開始すル。データＣ
の転送過程で、プロセスＰＯが情報処理装置へと情報処
理装置Ｂとの間に発生した通信不能状態を検出すると、
回線ＬＯに対し切断要求信号ｄを送出する。回線ＬＯか
ら切断確認信号ｅが到来すると、情報処理装置Ａのプロ
セスＰＯは消滅し、以後生起する新たな呼の受付を可能
とする。然し、情報処理装置Ｂに在るプロセスＰ１は、
前記通信不能状態によりプロセスＰＯの消滅を通知され
ず、無通信の状態で何時比も無効保留され続ける。かか
るプロセスＰＩは、回線Ｉ７Ｉから例えば切断要求信号
ｄが送信された場合には、対応するプロセスＰＯの消滅
している情報処理装置Ａから強制終了要求信号ｆが伝達
されることにより消滅するが、回線Ｌ１からの信号着信
がない限り、プロセスＰＩは消滅することは無い。When the call request signal a arrives, the information processing device A generates a process PO corresponding to the call request signal a, and transmits the call request signal a to the information processing device B via the transmission path C. Information processing device B generates a process P1 corresponding to the call request signal a, and sends the call request signal a to line Ll. The call set up between line LO and 51 as described above is as follows:
Controlled by processes PO and Pl. Line LO can be connected from line L1 to process P1 and PO.
After confirming that the information has been returned via
and starts the transfer of data C via B. Data C
During the transfer process, when process PO detects a communication failure state that has occurred between the information processing device and information processing device B,
A disconnection request signal d is sent to the line LO. When the disconnection confirmation signal e arrives from the line LO, the process PO of the information processing device A disappears, making it possible to accept new calls that will occur thereafter. However, the process P1 in the information processing device B is
Due to the communication disabled state, the termination of the process PO is not notified, and the process PO continues to be held invalid for a long time without communication. For example, when a disconnection request signal d is transmitted from the line I7I, such a process PI disappears by transmitting a forced termination request signal f from the information processing device A whose corresponding process PO has disappeared. The process PI will not disappear unless a signal arrives from the line L1.

以上の説明から明らかな如く、従来ある分散制御情報交
換システムにおいては、呼処理過程で発生した通信不能
状態に起因するプロセスＰＯおよび２１間の状態不一致
を早期に検出する手段を持たぬ為、情報処理装置Ｂ内の
資源を無効に保留する欠点が在り、然も該無効保留を解
消する為には、回線Ｌ１からの信号着信等に頼らざるを
得なかった。As is clear from the above explanation, in the conventional distributed control information exchange system, there is no means for early detecting a state mismatch between the processes PO and 21 due to a communication failure state that occurs during the call processing process. There is a drawback that the resources in the processing device B are held invalidly, and in order to cancel the invalid hold, it is necessary to rely on the arrival of a signal from the line L1.

ｆｄｌ　　発明の目的 本発明の目的は、前述の如き従来ある分散１１ｉ制御情
報交換システムの欠点を除去し、呼処理過程で発生した
通信不能状態に起因するプロセス間の状態不一致を早急
に検出し、当該分散制御情報交換システム内の資源の有
効利用を図ることに在る。fdl OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the drawbacks of the conventional distributed 11i control information exchange system as described above, to quickly detect state inconsistencies between processes due to communication failure states that occur during call processing, The objective is to make effective use of resources within the distributed control information exchange system.

（ｃｌ　　発明の構成 この目的は、相互に通信可能な複数の情報処理装置から
成り、任意の２情報処理装置内の任意のプロセス間に呼
を設定して情報転送を行う分散制御情報交換システムに
おいて、一方の情報処理装置の受信側プロセスが他方の
情報処理装置の送信側プロセスに受信可信号の返送を要
求する受信可信号を所定の周期で送出する手段を前記情
報処理装置に設け、前記送信側プロセスの異常を検出し
た時前記受信側プロセスが消滅することにより達成され
る。(cl) Structure of the Invention This object is to provide a distributed control information exchange system that is composed of a plurality of information processing devices that can communicate with each other, and that transfers information by setting a call between any processes in any two information processing devices. , the information processing apparatus is provided with a means for transmitting a receivable signal at a predetermined period so that the receiving process of one information processing apparatus requests the transmitting process of the other information processing apparatus to return the receivable signal; This is achieved by the receiving process disappearing when an abnormality in the receiving process is detected.

ｆｆ）　　発明の実施例　　　　　　　゛以下、本発明
の一実施例を図面により説明する。ff) Embodiment of the invention Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

第３図は、本発明の一実施例によるプロセス異常検出方
式を示す図であり、第４図は第３図における呼処理過程
の一例を示す図であり、第５図は第３図における呼処理
過程の他の一例を示す図である。なお、全図を通じて、
同一符号は同一対象物を示す。第３図においても伝送路
Ｃを介して相互に通信可能な情報処理装置ＡおよびＢが
示されている。然し、情報処理装置Ａに収容される回線
ＬＯから着信する情報処理装ｗＢに収容される回線Ｌ　
１に対する発呼要求信号ａを受信した情報処理装置Ａが
生成するプロセスＰｏ゛は、受信可確認返送機構Ｘを具
備し、また情報処理装置Ａから伝送路Ｃを介して伝達さ
れる発呼要求信号ａを受信した情報処理装置Ｂが生成す
るプロセスＰＩ′は、受信可送出監視機構ｙを具備する
。情報処理装置ＢのプロセスＰＩ′は、回線Ｌ１がら接
続可信号すを受信することにより、情報処理装置Ａのプ
ロセスＰＯ゛に対して接続可信号すを返送後、受信可送
出監視機構ｙにより受信可信号ｇをプロセスＰＯ′に対
し所定の周期Ｔで送信する。該受信可信号ｇは、受信し
たプロセスＰＯ′に対して受信可信号りの返送を要求す
る。プロセスＰＩ’は、プロセスＰＯ′から受信可確認
返送機構Ｘにより返送される受信可信号りを受信するこ
とにより、対応するプロセスＰＯ’が情報処理装置Ａ内
に設定され続けていることを確認し、呼の制御を継続す
る。データＣの転送過程で、情報処理装置Ａおよび８間
に通信不能状態が発生ずると、情報処理装置Ａ内のプロ
セスＰＯ′は、前述と同様の過程で消滅する。一方情報
処理装ｗＢのプロセスＰ１′は、前記通信不能状態中に
プロセスＰＯ’に対し受信可信号ｇを送出すると、プロ
セスＰＯ′から受信可信号りが返送されず、通信不能状
態を検出する為、回線Ｌ１に対して切断要求信号ｄを送
出し、回線ＬＬから切断確認信号ｅが返送されるのを待
ち、消滅する。また第５図に示される如く、情報処理装
置ＢのプロセスＰ１′がプロセスＰＯ′に受信可信号ｇ
を送出した時に、通信不能状態は回復しているが、情報
処理装置Ａ内ではプロセスＰＯ’が既に消滅している場
合には、情報処理装置ＡがプロセスＰＯ’およびＰＩ’
間の状態不一致を検出し、強制終了要求信号ｆを返送す
る。3 is a diagram showing a process abnormality detection method according to an embodiment of the present invention, FIG. 4 is a diagram showing an example of the call processing process in FIG. 3, and FIG. 5 is a diagram showing an example of the call processing process in FIG. It is a figure which shows another example of a processing process. In addition, throughout the diagram,
The same reference numerals indicate the same objects. FIG. 3 also shows information processing devices A and B that can communicate with each other via a transmission path C. In FIG. However, the line L accommodated in the information processing device wB receives the call from the line LO accommodated in the information processing device A.
The process Po' generated by the information processing device A that has received the call request signal a for 1 is equipped with a reception confirmation return mechanism The process PI' generated by the information processing device B that received the signal a includes a receivable/transmit monitoring mechanism y. The process PI' of the information processing device B receives the connection possible signal from the line L1, returns the connection possible signal to the process PO' of the information processing device A, and then receives it by the receivable sending monitoring mechanism y. A possible signal g is transmitted to the process PO' at a predetermined period T. The receivable signal g requests the receiving process PO' to return the receivable signal. By receiving the receivable signal returned by the receivable confirmation return mechanism X from the process PO', the process PI' confirms that the corresponding process PO' continues to be set in the information processing device A. , maintain control of the call. During the process of transferring data C, if a communication failure occurs between information processing apparatuses A and 8, process PO' within information processing apparatus A disappears in the same process as described above. On the other hand, when the process P1' of the information processing device wB sends the receivable signal g to the process PO' during the communication disabled state, the process PO' does not return the receivable signal g, and the process P1' detects the communication disabled state. , sends a disconnection request signal d to the line L1, waits for a disconnection confirmation signal e to be returned from the line LL, and disappears. Further, as shown in FIG. 5, the process P1' of the information processing device B sends a receivable signal g to the process PO'.
If the communication-disabled state has been recovered, but the process PO' has already disappeared in the information processing device A, when the information processing device A sends the process PO' and PI'
A state mismatch between the two is detected and a forced termination request signal f is returned.

該強制終了要求信号ｆを受信したプロセスＰ１′は、対
応するプロセスＰＯ’が消滅していることを認識し、第
４図と同様の過程を経て消滅する。The process P1' that has received the forced termination request signal f recognizes that the corresponding process PO' has disappeared, and disappears through the same process as shown in FIG. 4.

以上の説明から明らかな如く、本実施例によれば、情報
処理装置ＢのプロセスＰＩ′は受信可送出監視機構ｙに
よる受信可信号ｇの周期的送出により、対応する情報処
理装置ＡのプロセスＰＯ’の消滅を早期に認識すること
が出来る。As is clear from the above description, according to the present embodiment, the process PI' of the information processing apparatus B is activated by the periodic transmission of the receivable signal g by the receivable transmission monitoring mechanism y, and the corresponding process PO of the information processing apparatus A is It is possible to recognize the disappearance of ' at an early stage.

なお、第３図乃至第５図はあく迄本発明の一実施例に過
ぎず、例えば第３図における呼処理過程で発生ずるプロ
セス間の状態不一致は図示されるものに限定されること
は無（、他に幾多の変形が考慮されるが、何れの場合に
も本発明の効果は変らない。また、本発明の対象となる
分散制御情報交換システムは図示されるものに限定され
ることは無く、他に幾多の変形が考慮されるが、何れの
場合にも本発明の効果は変らない。Note that FIGS. 3 to 5 are only one embodiment of the present invention, and the state mismatch between processes that occurs during the call processing process in FIG. 3, for example, is not limited to what is shown in the figures. (Although many other modifications may be considered, the effects of the present invention will not change in any case. Also, the distributed control information exchange system to which the present invention is applied is not limited to what is shown in the figure. Although many other modifications may be considered, the effects of the present invention will not change in any case.

ｆｇｌ　　発明の効果 以上、本発明によれば、前記分散制御情報交換システム
において、呼処理過程で発生した通信不能状態に起因す
るプロセス間の状態不一致が早期に検出され、当該分散
制御情報交換システム内の資源が無効保留されることを
防止することが可能となる。fgl Effects of the Invention According to the present invention, in the distributed control information exchange system, a state mismatch between processes due to a communication failure state that occurs during a call processing process is detected at an early stage. This makes it possible to prevent resources from being held invalid.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来ある分散制御情報交換システムの一例を示
す図、第２図は、第１図における呼処理過程の一例を示
す図、第３図は本発明の一実施例によるプロセス異常検
出方式を示す図、第４図は第３図における呼処理過程の
一例を示す図、第５図は第３図における呼処理過程の他
の一例を示す図である。 図において、ＡおよびＢは情報処理装置、ＬＯおよびＬ
ｌは回線、Ｃは伝送路、ＰＯｌＰｌ、ＰＯ′およびＰ１
′はプロセス、ａは発呼要求信号、ｂは接続可信号、Ｃ
はデータ、ｄは切断要求信号、ｅは切断確認信号、ｆは
強制終了要求信号、ｇおよびｈは受信可信号、Ｔは周期
、を示す。 第　　１　　図 ４　２　　図 第　３　　図 濃　４　　図 Ｌ　ｏ　　　　　　Ａ　　　　　　　　　Ｂ　　　　　
　　Ｌ　１第　　５　　月FIG. 1 is a diagram showing an example of a conventional distributed control information exchange system, FIG. 2 is a diagram showing an example of the call processing process in FIG. 1, and FIG. 3 is a process abnormality detection method according to an embodiment of the present invention. 4 is a diagram showing an example of the call processing process in FIG. 3, and FIG. 5 is a diagram showing another example of the call processing process in FIG. 3. In the figure, A and B are information processing devices, LO and L
l is the line, C is the transmission line, POlPl, PO' and P1
' is a process, a is a call request signal, b is a connection ready signal, C
is data, d is a disconnection request signal, e is a disconnection confirmation signal, f is a forced termination request signal, g and h are receivable signals, and T is a period. Figure 1 Figure 4 2 Figure 3 Figure 4 Figure L o A B
L 1st May

Claims (1)

【特許請求の範囲】[Claims] 相互に通信可能な複数の情報処理装置から成り、任意の
２情報処理装置内の任意のプロセス間に呼を設定して情
報転送を行う分散制御情報交換システムにおいて、一方
の情報処理装置の受信側プロセスが他方の情報処理装置
の送信側プロセスに受信可信号の返送を要求する受信可
信号を所定の周期で送出する手段を前記情報処理装置に
設け、前記送信側プロセスの異常を検出した時前記受信
側プロセスが消滅することを特徴とするプロセス異常検
出方式。In a distributed control information exchange system that consists of multiple information processing devices that can communicate with each other and that transfers information by setting up a call between any processes in any two information processing devices, the receiving side of one of the information processing devices The information processing apparatus is provided with means for transmitting a receivable signal at a predetermined cycle for requesting the transmitting process of the other information processing apparatus to return a receivable signal, and when an abnormality in the transmitting process is detected, A process abnormality detection method characterized by the disappearance of the receiving process.
JP57178819A 1982-10-12 1982-10-12 Process abnormality detection system Granted JPS5968062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57178819A JPS5968062A (en) 1982-10-12 1982-10-12 Process abnormality detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57178819A JPS5968062A (en) 1982-10-12 1982-10-12 Process abnormality detection system

Publications (2)

Publication Number Publication Date
JPS5968062A true JPS5968062A (en) 1984-04-17
JPS6255172B2 JPS6255172B2 (en) 1987-11-18

Family

ID=16055210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57178819A Granted JPS5968062A (en) 1982-10-12 1982-10-12 Process abnormality detection system

Country Status (1)

Country Link
JP (1) JPS5968062A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63131240A (en) * 1986-11-20 1988-06-03 Canon Inc Communication controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63131240A (en) * 1986-11-20 1988-06-03 Canon Inc Communication controller

Also Published As

Publication number Publication date
JPS6255172B2 (en) 1987-11-18

Similar Documents

Publication Publication Date Title
KR850002914A (en) Message-Oriented Interrupt Devices for Multiprocessor Systems
JPS5968062A (en) Process abnormality detection system
EP0577431B1 (en) Method of resetting coupled modules and a system using the method
JPH0294943A (en) Data transfer system
JPH054040Y2 (en)
JP3008689B2 (en) Incorrect cable connection detection method between devices
JPH055418B2 (en)
KR100229434B1 (en) Dual apparatus for controlling data communication
JPH0281151A (en) Serial data transfer system
JPH06152570A (en) System for system switching processing in duplex data processor
JPS60233957A (en) Data transmission control system
JPH01204532A (en) Terminal control system
JPH01284030A (en) Communication system for dama system
JPH0833841B2 (en) Data duplication processing system
JPS6354265B2 (en)
JPS60177748A (en) Circuit controlling system
JPS63194445A (en) Multipoint communication system
JPS59132257A (en) System for transferring common bus information
JPH0215751A (en) Connection repeater
JPS61112450A (en) Railway station controller
JPS5952945A (en) Network control system
JPS58177053A (en) Data communication system
JPS60114048A (en) Data transfer method
JPH04129443A (en) Information exchange system
JPS636652A (en) Information processing system