Method and mechanism for guaranteeing timeliness of programs

Details Method and mechanism for guaranteeing timeliness of programs Method and mechanism for guaranteeing timeliness of programs

1996-06-27

1998-04-07

Chung, Phung

Boots, shoes, and leggings

39518508, 3642679, G06F 1100

Patent

active

057375151

ABSTRACT:
In order to prevent data corruption and inconsistency caused by incorrect assumption regarding a presumably failed node and/or program, a fail-fast timer mechanism enforces deadlines, i.e. enforces timeliness in programs. For example, given a program which needs to ensure a given code segment is executed within a specified deadline, the program arms a fail-fast timer before executing the code segment. After completing the execution of the code segment, the program disarms the fail-fast timer. If the program executes too slowly and the fail-fast timer expires before the fail-fast timer has been disarmed, the entire node is forced to stop very quickly (i.e. the node fails fast). The fail-fast timer of the present invention also triggers if the program exits before disarming a previously armed timeout.

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