Buffer asynchronous output apparatus capable of referring to or

Details Buffer asynchronous output apparatus capable of referring to or Buffer asynchronous output apparatus capable of referring to or

1992-12-08

1995-12-26

Lall, Parshotam S.

Boots, shoes, and leggings

395600, 364DIG1, G06F 1216

Patent

active

054796156

ABSTRACT:
In a buffer asynchronous output apparatus comprising a plurality of renewal processing programs each of which renews one of buffer areas in a system shared buffer unit as a renewed buffer area, a copied buffer area securing section secures a copied buffer area. A renewed buffer area copying section copies contents of the renewed buffer area into the copied buffer area. An output request enqueuing section enqueues an output request into an output request waiting queue. Performed asynchronously with the renewal processing programs, an output processing program comprises a file outputting section for outputting contents of the copied buffer area into a file device on reception of the output request dequeued from the output request waiting queue. After completion of a file output processing by means of the file outputting section, an output completion informing section stores an output completion status and a file output result status in a copied buffer information field on a buffer control table. In place of the copied buffer area securing section, an alternate copied buffer area securing section secures an alternate copied buffer area. A copied buffer area releasing section releases the copied buffer area. On ending of each of the renewal processing programs, a file output checking section checks whether or not the file output processing normally ends.

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