lkml.org 
[lkml]   [2000]   [Aug]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: SCO: "thread creation is about a thousand times faster than on
    Just for the record, I promoted 1003.13 to 10003.13 and that's not
    only incorrect, but scary.

    On Sun, Aug 27, 2000 at 09:27:27PM -0600, yodaiken@fsmlabs.com wrote:
    > On Sun, Aug 27, 2000 at 08:27:59PM -0700, Linus Torvalds wrote:
    > >
    > >
    > > On Sun, 27 Aug 2000 yodaiken@fsmlabs.com wrote:
    > > >
    > > > The beauty of POSIX 1003.13 for the RTLinux side is that we get to
    > > > define POSIX_SINGLE_PROCESS and forbid forbid fork and exec: making
    > > > threads semantics much cleaner.
    > >
    > > Well, what you think of as a "beauty" I just consider a silly cop-out by
    > > the standard. Basically, a lot of things can call themselves "compliant to
    > > the letter of the law" wrt POSIX, while still leaving the _user_ out in
    > > the cold.
    >
    > It's silly to expect to "fork" or to "exec" via a file system in a
    > minimal realtime environment. These are complex activities however you
    > cut it. By defining a set of execution environments, the 10003.13
    > specification makes the _user_ confront the reality that some services
    > don't make sense if you are prepared to put up with only a tiny
    > OS overhead. POSIX 10003.13 requires you to label compliance correctly.
    > So, we can very clearly tell the user that running in the RT environment
    > gives you pthreads PSE51 and if you want PSE54 with all the features of
    > a full service UNIX, run in the Linux environment.
    >
    >
    > --
    > ---------------------------------------------------------
    > Victor Yodaiken
    > Finite State Machine Labs: The RTLinux Company.
    > www.fsmlabs.com www.rtlinux.com

    --
    ---------------------------------------------------------
    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
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 12:38    [W:0.025 / U:0.228 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site