On Mon, 27 Nov 2000, Alfred Perlstein wrote:
- I thought it's preemptive purely at user-level since the threads are
- scheduled by thread lib at user-level only. No?
-
-What are you asking? Give a scenario and I'll explain what should
-happen.
-
Hmm, actually I don't know in which case it'd
On Tue, 28 Nov 2000, Alfred Perlstein wrote:
- Hmm, actually I don't know in which case it'd be considered as "preemptive
- at kernel level"... In the case where a thread calls a syscall and gets
- blocked, the entire process gets blocked not just that thread. In
- the case where the syscalls
* FengYue [EMAIL PROTECTED] [001128 18:31] wrote:
On Tue, 28 Nov 2000, FengYue wrote:
--No it wouldn't. The async nature of the call would prevent the
--process from blocking therefore the threads wouldn't block either
--blocking.
--
-
-Sorry for being unclear. I actually meant "Would
thanks for the quick reply...
3. if preemptive, does that occur at user-level, or by the kernel?
(and how costly is it?)
It's a mix, and very cheap.
sounds pretty neat. is there a design document somewhere where i can
read up on this for fun?
4. if one thread makes a system call
* David Petrou [EMAIL PROTECTED] [001127 14:41] wrote:
thanks for the quick reply...
3. if preemptive, does that occur at user-level, or by the kernel?
(and how costly is it?)
It's a mix, and very cheap.
sounds pretty neat. is there a design document somewhere where i can
On Mon, 27 Nov 2000, Alfred Perlstein wrote:
-* David Petrou [EMAIL PROTECTED] [001127 14:41] wrote:
- thanks for the quick reply...
-
- 3. if preemptive, does that occur at user-level, or by the kernel?
- (and how costly is it?)
-
- It's a mix, and very cheap.
I thought it's
* FengYue [EMAIL PROTECTED] [001127 16:08] wrote:
On Mon, 27 Nov 2000, Alfred Perlstein wrote:
-* David Petrou [EMAIL PROTECTED] [001127 14:41] wrote:
- thanks for the quick reply...
-
- 3. if preemptive, does that occur at user-level, or by the kernel?
- (and how costly is it?)
hi. i've searched the handbook, tutorial, FAQ, and parts of the
mailing list archives but haven't found direct answers to the
following questions. i hope you don't mind answering them for me; it
will save me a lot of time looking through the code, and / or writing
test cases:
john milford
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