System and method for providing shared global offset table for common shared library in a computer system

Patent 6260075 Issued on July 10, 2001. Estimated Expiration Date:

June 19, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Application

No. 491660 filed on 06/19/1995

US Classes:

719/310, MISCELLANEOUS711/221Using table

Examiners

Primary: Banankhah, Majid A.
Assistant: Caldwell, P. G.

Attorney, Agent or Firm

International Classes

G06F 009/46
G06F 015/163
G06F 009/00
G06F 012/02

Abstract

A computer system employing a microkernel executes two different tasks, e.g., operating systems, yet uses common shared libraries. Rather than each task setting up its own libraries, during compile a global offset table is set up for each task so that the tasks can use common shared libraries. An abstractions layer is established to allow the tasks to share the global offset table, and thus to use common shared libraries. Threading package related services are resolved via the abstractions mechanism. This abstractions mechanism includes services implemented as operating system abstractions, and include thread creation, exit from a thread, etc. Abstracted functions utilize pointers to runtime environment-specific functions, and are utilized by the task's runtime environment.

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