JPS648450A - Task control device - Google Patents

Task control device

Info

Publication number
JPS648450A
JPS648450A JP16237287A JP16237287A JPS648450A JP S648450 A JPS648450 A JP S648450A JP 16237287 A JP16237287 A JP 16237287A JP 16237287 A JP16237287 A JP 16237287A JP S648450 A JPS648450 A JP S648450A
Authority
JP
Japan
Prior art keywords
factor
starting
pointer
user task
factors
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.)
Pending
Application number
JP16237287A
Other languages
Japanese (ja)
Inventor
Chuji Shibata
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.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi Ltd
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 Hitachi Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP16237287A priority Critical patent/JPS648450A/en
Publication of JPS648450A publication Critical patent/JPS648450A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
    • G06F9/4881—Scheduling strategies for dispatcher, e.g. round robin, multi-level priority queues

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To completely prevent processing from being inversed by providing the titled device with memories for stacking starting factors in the order of start, registering factors in the order of start and transferring the starting factors in the registered order on the basis of a user task request. CONSTITUTION:Necessary memories 1-l for stacking starting factors are sufficiently prepared and controlled by a registering pointer and a reading pointer. At the time of generating a starting factor, the factor is registered in the memory and the pointer is counted up. When a user task 7 is started, factor reading is requested by a new instruction, the factor is extracted from the memory pointed out by the pointer and transferred to a user task. If a starting factor reading macro is generated when the registering pointer coincides with the reading pointer, '0', (specific code) is transferred as a starting factor and the disappearance of the factor is informed to the user task. In said constitution, the inverse of processing in the user task can be completely suppressed, and even if plural same starting factors exist, the processing is not missed.
JP16237287A 1987-07-01 1987-07-01 Task control device Pending JPS648450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16237287A JPS648450A (en) 1987-07-01 1987-07-01 Task control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16237287A JPS648450A (en) 1987-07-01 1987-07-01 Task control device

Publications (1)

Publication Number Publication Date
JPS648450A true JPS648450A (en) 1989-01-12

Family

ID=15753320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16237287A Pending JPS648450A (en) 1987-07-01 1987-07-01 Task control device

Country Status (1)

Country Link
JP (1) JPS648450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0395633A (en) * 1989-09-07 1991-04-22 Fujitsu Ltd Process information control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0395633A (en) * 1989-09-07 1991-04-22 Fujitsu Ltd Process information control system

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