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XS-1 Context Switcher (vThreads)

by paul

  • Status: Alpha
  • Downloads: See External Download
  • Licence: BSD
  • Last updated: 01/Feb/2010 at 01:39 AM
  • Sponsors:
  • Wiki entry: View project wiki entry

Version 0.1

Size: Unknown

View older versions

Project Overview

Implementation of virtual threads for the XS-1. Currently a simple context switching implementation for the XMOS XS-1 architecture (Gn, Ln products). Allows a user to run low speed processes on a single thread using time sliced scheduling. Features:

Current:
- Initialise threads
- Context Switch on Timer Interrupt (time slice scheduling)
- Functions to allow atomic operations (ClrInt() & SetInt())

Wish List:
- Call to allocate stack space to vthread
- Event support
- More flexible vthread params (ports, chans, etc)
- On demand context switch (when a thread wants to hand over control to another because it doesn't have anything to do)

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Comments / Updates

Defrencing, really ; )

Submitted by shawn on Mon, 01/02/2010 - 18:51.

Thanks Paul,

Looks like a nice tool, shows explicitely ,once again , why Xcore diffrentiates itself from all other cores and FPGA's. Xcore lends itself to seamless constructions. I can't comment very deep till I get my hand on a real physical core. Anouther aspect I noted is that the physical Xcore lends itself to easy physical constructions, increasing possible choices for proto, dev, eval, are very feature rich, making my choices tough cause I like the lot of them.

Made my Day, "Great" project!
Shawn

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