Drobe :: The archives
About Drobe | Contact | RSS | Twitter | Tech docs | Downloads | BBC Micro

Confirm comment report request

I don't think PMT vs. CMT is particularly related to the issue of multiprocessor support. I don't see why it wouldn't be possible (though lots of hard work) to have one WIMP operating on each core, 'scheduling' tasks to run on that core, with only the two WIMPs communicating with each other, to cope with redraw and drag+drop events, and other messages.

You'd still have the problem of all the modules not being mp safe, let alone the bottleneck that RISC OS's blocking filecore would become. But you'd have all those problems under multicore PMT anyway.

How is state handled by the wimp anyway? The few wimp apps I've written have never made any assumptions about the csd, so I'm not sure how that's handled. Does the wimp restore csd on returning from the wimp_poll? If that's the case, then you could still shift processes between cores each time they poll, provided you make their state data available to the other core.

 is a RISC OS Userninja on 21/5/09 5:17PM
[ Reply | Permalink | Report ]

Click on the button below to confirm you wish to flag up this comment to the website's administrators. Abuse of this service will be frowned upon and it should only be used to notify us of comments that are extremely distasteful, indecent or otherwise unlawful. If you disagree with an opinion expressed or fact stated in a comment, please take part in the debate rather than expect it to be removed.

Return to the drobe.co.uk front page

Details

Reporting user / IP: / 54.226.172.30
Comment GID: 30999
Timestamp: Sat, 16 Dec 2017 22:25:08 +0000

Search the archives

Today's featured article

  • Manchester RISC OS Jaunt
    Martin Hansen does Northern dealers
     21 comments, latest by Anon on 3/1/04 9:06PM. Published: 21 Dec 2003

  • Random article

  • RISC OS found on Pocket PC PDA
    So close yet so far
     25 comments, latest by flibble on 1/6/06 12:50PM. Published: 28 May 2006

  • Useful links

    News and media:
    IconbarMyRISCOSArcSiteRISCOScodeANSC.S.A.AnnounceArchiveQercusRiscWorldDrag'n'DropGAG-News

    Top developers:
    RISCOS LtdRISC OS OpenMW SoftwareR-CompAdvantage SixVirtualAcorn

    Dealers:
    CJE MicrosAPDLCastlea4X-AmpleLiquid SiliconWebmonster

    Usergroups:
    WROCCRONENKACCIRUGSASAUGROUGOLRONWUGMUGWAUGGAGRISCOS.be

    Useful:
    RISCOS.org.ukRISCOS.orgRISCOS.infoFilebaseChris Why's Acorn/RISC OS collectionNetSurf

    Non-RISC OS:
    The RegisterThe InquirerApple InsiderBBC NewsSky NewsGoogle Newsxkcddiodesign


    © 1999-2009 The Drobe Team. Some rights reserved, click here for more information
    Powered by MiniDrobeCMS, based on J4U | Statistics
    "Is it too late to nominate Drobe in the best own goal category?"
    Page generated in 0.0687 seconds.