Date: Fri, 9 Apr 1999 16:12:03 +0200 From: Jeremy Lea <reg@shale.csir.co.za> To: Roger Hardiman <roger@cs.strath.ac.uk> Cc: dick@tar.com, hackers@FreeBSD.ORG Subject: Re: cc -pthread and -kthread switches Message-ID: <19990409161203.B3791@shale.csir.co.za> In-Reply-To: <370DC114.E0A81FDE@cs.strath.ac.uk>; from Roger Hardiman on Fri, Apr 09, 1999 at 09:57:56AM %2B0100 References: <370DC114.E0A81FDE@cs.strath.ac.uk>
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Hi,
I've spoken about this before, but I'll throw my ideas in again.
On Fri, Apr 09, 1999 at 09:57:56AM +0100, Roger Hardiman wrote:
> cc -uthread use useland threads (what is currently -pthread)
> cc -kthread use kernel threads
This could break anything using -pthread. Something like this:
cc -pthread - links with '-lc_r' and defines -D_THREAD_SAFE.
cc -kthread - links with '-lpthread -lc' and defines -D_THREAD_SAFE
and -DLINUXTHREADS.
would really make porting applications a lot easier. If anyone does
conjure up the magic 'FreeBSD kernel threads' it can replace -kthread,
and the LinuxThreads can either die or be moved to -lthread (or if a
-l?? option isn't workable -xthread)
I still feel that Richard's LinuxThreads port belongs in the base system
and not in Ports. I looked at it, and it shouldn't be to difficult to
'contribify'. If you haven't looked, the poor port has to go rumaging
around in /usr/src to find half of it's source files. This is a reciepe
for disaster.
Maybe the Linux threads should go straight to -lthread or -xthread, with
library names 'liblthread' and headers in /usr/include/pthread/lthread'.
That leaves 'kthread' open. -xthread sounds like something which is
going to leave soon...
Regards,
-Jeremy
--
| "I could be anything I wanted to, but one things true
--+-- Never gonna be as big as Jesus, never gonna hold the world in my hand
| Never gonna be as big as Jesus, never gonna build a promised land
| But that's, that's all right, OK with me..." -Audio Adrenaline
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