76 messages in org.freebsd.freebsd-archRe: Threads| From | Sent On | Attachments |
|---|---|---|
| Daniel M. Eischen | Nov 20, 1999 8:12 pm | |
| Julian Elischer | Nov 20, 1999 8:30 pm | |
| Julian Elischer | Nov 20, 1999 8:37 pm | |
| Daniel M. Eischen | Nov 20, 1999 9:02 pm | |
| Nate Williams | Nov 20, 1999 9:14 pm | |
| Daniel M. Eischen | Nov 20, 1999 9:21 pm | |
| Julian Elischer | Nov 20, 1999 9:25 pm | |
| Nate Williams | Nov 20, 1999 9:27 pm | |
| Daniel M. Eischen | Nov 20, 1999 9:40 pm | |
| Julian Elischer | Nov 20, 1999 10:58 pm | |
| Daniel M. Eischen | Nov 21, 1999 5:40 am | |
| Chuck Robey | Nov 22, 1999 4:30 pm | |
| Julian Elischer | Nov 22, 1999 7:57 pm | |
| Chuck Robey | Nov 22, 1999 8:11 pm | |
| Julian Elischer | Nov 22, 1999 8:38 pm | |
| Chuck Robey | Nov 22, 1999 9:40 pm | |
| Daniel Eischen | Nov 23, 1999 4:19 am | |
| Jason Evans | Nov 23, 1999 11:30 am | |
| Daniel M. Eischen | Nov 23, 1999 1:22 pm | |
| Chuck Robey | Nov 23, 1999 9:06 pm | |
| Daniel Eischen | Nov 23, 1999 9:49 pm | |
| Julian Elischer | Nov 23, 1999 10:47 pm | |
| Julian Elischer | Nov 23, 1999 11:33 pm | |
| Julian Elischer | Nov 23, 1999 11:46 pm | |
| Julian Elischer | Nov 24, 1999 2:03 am | |
| Daniel C. Sobral | Nov 24, 1999 3:19 am | |
| Daniel C. Sobral | Nov 24, 1999 3:51 am | |
| Daniel M. Eischen | Nov 24, 1999 6:03 am | |
| Richard Seaman, Jr. | Nov 24, 1999 6:33 am | |
| Matthew Dillon | Nov 24, 1999 10:35 am | |
| Daniel Eischen | Nov 24, 1999 11:02 am | |
| Matthew Dillon | Nov 24, 1999 11:05 am | |
| Anthony Kimball | Nov 24, 1999 11:25 am | |
| Daniel Eischen | Nov 24, 1999 11:28 am | |
| Matthew Dillon | Nov 24, 1999 11:41 am | |
| Matthew Dillon | Nov 24, 1999 11:47 am | |
| Julian Elischer | Nov 24, 1999 11:54 am | |
| Louis A. Mamakos | Nov 24, 1999 11:57 am | |
| Matthew Dillon | Nov 24, 1999 12:00 pm | |
| Julian Elischer | Nov 24, 1999 12:20 pm | |
| Anthony Kimball | Nov 24, 1999 12:47 pm | |
| Doug Rabson | Nov 24, 1999 2:05 pm | |
| Jason Evans | Nov 24, 1999 2:16 pm | |
| Julian Elischer | Nov 24, 1999 2:28 pm | |
| Julian Elischer | Nov 24, 1999 2:40 pm | |
| Richard Seaman, Jr. | Nov 24, 1999 3:39 pm | |
| Jason Evans | Nov 24, 1999 9:24 pm | |
| Jason Evans | Nov 24, 1999 10:03 pm | |
| Julian Elischer | Nov 25, 1999 1:08 am | |
| Julian Elischer | Nov 25, 1999 1:33 am | |
| Daniel M. Eischen | Nov 25, 1999 3:08 am | |
| Doug Rabson | Nov 26, 1999 3:01 am | |
| Jordan K. Hubbard | Nov 26, 1999 10:33 am | |
| Doug Rabson | Nov 26, 1999 12:15 pm | |
| Matthew Dillon | Nov 27, 1999 7:38 pm | |
| Arun Sharma | Nov 27, 1999 8:57 pm | |
| Matthew Dillon | Nov 28, 1999 8:41 am | |
| Arun Sharma | Nov 28, 1999 10:25 am | |
| Matthew Dillon | Nov 28, 1999 5:06 pm | |
| Nate Williams | Nov 29, 1999 8:10 am | |
| Matthew Dillon | Nov 29, 1999 8:21 am | |
| Nate Williams | Nov 29, 1999 8:29 am | |
| Matthew Dillon | Nov 29, 1999 9:05 am | |
| Matthew Dillon | Nov 29, 1999 9:19 am | |
| Daniel M. Eischen | Nov 29, 1999 9:28 am | |
| Nate Williams | Nov 29, 1999 10:29 am | |
| Julian Elischer | Nov 29, 1999 11:23 am | |
| Nate Williams | Nov 29, 1999 1:39 pm | |
| Chuck Robey | Nov 29, 1999 6:06 pm | |
| Daniel M. Eischen | Nov 29, 1999 7:46 pm | |
| Chuck Robey | Nov 29, 1999 9:01 pm | |
| Julian Elischer | Nov 29, 1999 9:34 pm | |
| Chuck Robey | Nov 29, 1999 10:09 pm | |
| Daniel M. Eischen | Nov 30, 1999 4:02 am | |
| Jason Evans | Nov 30, 1999 2:25 pm | |
| Julian Elischer | Nov 30, 1999 2:42 pm |
| Subject: | Re: Threads | |
|---|---|---|
| From: | Julian Elischer (jul...@whistle.com) | |
| Date: | Nov 23, 1999 11:46:56 pm | |
| List: | org.freebsd.freebsd-arch | |
On Sun, 21 Nov 1999, Daniel M. Eischen wrote:
Now I think I understand what Julian is talking about. Suppose a read(2) blocks in an MT application. Julian is thinking that read(2) returns with -1 and errno set to EMTBLOCKED or something like that?
Not exactly.. I think that by stack magic what actually returns is a differnt KSE and it 'returns' (so to speak) to the UTS The way that the UTS tells the kernel how these returns are made is that one time for each subproc it calls a new syscall with information as to how to get to the UTS. Basically this is a set of context that the future upcalling KSEs will use. Basically a stack is set up and the KSE "returns". In some way you can think of it as being one call returning many times.
The state saved from that one downcall becomes a prototype upcall. Each subproc has to do this once, as each should have a different return context for it's upcalls. If you haven;t done this you can't get upcalls so you are effectively non multithreaded.
I don't think a blocking system call should return at all. Control should be returned to the UTS at another entry point and on another stack.
Certainly, OR another possibility is that ALL syscalls return to the same place?
Dan Eischen eisc...@vigrid.com
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