> Date: Fri, 29 Jun 2001 20:33:51 +0200
> From: Bernd Walter <[EMAIL PROTECTED]>
>
> I can't see how you make shure that on SMP systems all CPUs have
> the same meaning from memory content.
> Normaly you would use a mutex or similar before accessing a data range
> from another thread which also enshures that the CPU specific caches
> and buffers are syncronised.
> If you don't do this it may happen that you write a variable and
> another thread uses this variable using another CPU before the first
> CPU has writen this memory seeable for others and works with an
> outdated content.
Passing a token between threads. When a thread has the token, it may
assert a lock or a mutex on an object. Again, I subscribe to threads
being lightweight; cooperative sharing is better than preemptive or trying
to grab a lock before another thread does.
Any good references on MP standard? Is the lock prefix the only way to
force cache coherency?
Eddy
---------------------------------------------------------------------------
Brotsman & Dreger, Inc.
EverQuick Internet Division
Phone: +1 (316) 794-8922 Wichita/(Inter)national
Phone: +1 (785) 865-5885 Lawrence
---------------------------------------------------------------------------
Date: Mon, 21 May 2001 11:23:58 +0000 (GMT)
From: A Trap <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Please ignore this portion of my mail signature.
These last few lines are a trap for address-harvesting spambots. Do NOT
send mail to <[EMAIL PROTECTED]>, or you are likely to be blocked.
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message
