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JPH0652014A Expired / Lapsed JP ⏱️ 0.0 years remaining

System down avoidance method

Assignee: Fujitsu Ltd
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Filing: 1992-07-29
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Granted: —
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Expires: 2012-07-29
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 本発明は、システムダウン回避方式に関し、 本体がSVP生存状態を確認できるようにし、DIAG 命令実行時などに本体がSVP生存状態をチェックし、 SVPがダウンしていれば命令の実行を止め、生存して いれば命令を実行させ、本体のCPUの長時間の中断の 回避を可能にすることを目的とする。 【構成】 SVP4と本体1との通信領域31にフラグ 32を設け、本体1が所定時間毎に通信領域31中のフ ラグ32を所定状態に設定すると共に、SVP4が所定 時間毎に通信領域31中のフラグ32を他の所定状態に 設定して生存状態を知らせることを繰り返し、本体1が SVP4に処理代行依頼するときに、フラグ32を参照 して他の所定状態に設定されて生存状態であったとき に、命令発行してSVP4に処理代行依頼し、一方、生 存状態でなかったときに、命令発行を中断するように構 成する。 (57) [Summary] [Object] The present invention relates to a system down avoidance method, Allow the main body to check the SVP survival status, The main body checks the SVP survival status at the time of command execution, The purpose is to stop the execution of an instruction if the SVP is down, execute the instruction if the SVP is alive, and to avoid a long interruption of the CPU of the main body. [Configuration] A flag 32 is provided in a communication area 31 between the SVP 4 and the main body 1, the main body 1 sets the flag 32 in the communication area 31 to a predetermined state at predetermined time intervals, and the SVP 4 sets the communication area 31 in the communication area 31 at predetermined time intervals. When the main body 1 requests the SVP 4 to act on behalf of the processing, the flag 32 is set to another predetermined state, and the flag 32 is referred to and the other predetermined state is set. When it does, the command is issued and the SVP 4 is requested to perform processing, and when it is not in the alive state, the command issuance is interrupted.

Inventors

  • 👤 Iwao Fukutani
  • 👤 巌 福谷

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-05 16:09
CPC Classifications
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