Method and system for optimizing file table usage

Details Method and system for optimizing file table usage Method and system for optimizing file table usage

2008-04-17

2010-11-30

Nguyen, Van H (Department: 2194)

Electrical computers and digital processing systems: interprogra

Interprogram communication using message

Agent

C719S312000

Reexamination Certificate

active

07844974

ABSTRACT:
An operating system directed to using special properties of a common inter-process communications mechanism (IPC), namely UNIX domain socket-pairs or stream-pipes alternatively as a storage medium for file-descriptors of UNIX processes. When a file-descriptor is written into a socket-pair, and closed in the UNIX process, the file remains open, but occupies no space in the process' file-table. The file-descriptor may later be read out of the socket-pair to reestablish it in the file-table, and access it. This property is implemented in an IPC mechanism of UNIX operating system whereby a process such as a dispatcher may manage more connections and processes than its file-table size allow. This provides scalability improvements of the UNIX operating system.

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