Stack usage in computer-related operating systems

Electrical computers and digital processing systems: virtual mac – Task management or control

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C718S103000, C718S104000, C718S107000, C711S001000, C711S100000

Reexamination Certificate

active

10242482

ABSTRACT:
Methods, devices, configuration tools and operating systems are disclosed for reducing memory and processor usage in a computer operating system utilising a processor, a memory and a single stack, the operating system comprising a plurality of tasks divided into predetermined priority categories, including preemptive tasks and at least one task that voluntarily yields control of the processor to tasks of lower priority than itself in predetermined circumstances, wherein each task has associated therewith a stack pointer, and wherein the at least one task, when started, has its stack pointer set to a precalculated worst-case value guaranteed to leave sufficient space in the stack beneath the stack pointer for any preemptive tasks of lower priority, and wherein the at least one task has allocated to it an area of memory into which its stack contents is saved, a size of the area of memory being determined by a declared precalculated worst-case stack usage of the at least one task at any point at which the at least one task may yield control of the processor. Embodiments of the present invention enable a plurality of tasks to run on a single stack, thus saving memory and processor usage.

REFERENCES:
patent: 3905023 (1975-09-01), Perpiglia
patent: 6240358 (2001-05-01), Kawai
patent: 0 052 713 (1982-06-01), None
“Allocation of stack space for interrupt routines”;IBM Technical Disclosure Bulletin, 30:2, Jul. 1987, pp. 889-892.
Du et al.; “High-Performance DSPs”;IEEE Signal Processing Magazine; Mar. 2000; pp. 16-26.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Stack usage in computer-related operating systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stack usage in computer-related operating systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stack usage in computer-related operating systems will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3779379

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.