lkml.org 
[lkml]   [2002]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC] New locking primitive for 2.5
    On Thu, Feb 07, 2002 at 12:57:19PM -0800, Andrew Morton wrote:
    > yodaiken@fsmlabs.com wrote:
    > >
    > > llseek:
    > > atomic_enquee request
    > > if no room gotta sleep
    > > else if trylock mutex
    > > return
    > > else
    > > do work
    > > loop:
    > > process any pending requests
    > > release lock;
    > > if pending_requests && !(trylock mutex) goto loop
    >
    > This is how printk() works. It was a very powerful and satisfactory
    > solution to a nasty locking/atomicity problem. It'd be nice to have
    > a more generic way of expressing that solution.

    note how I put in the goto so Ingo would be more happy with it -)

    >
    > -

    --
    ---------------------------------------------------------
    Victor Yodaiken
    Finite State Machine Labs: The RTLinux Company.
    www.fsmlabs.com www.rtlinux.com

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:24    [W:3.923 / U:0.108 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site