On Thu, 17 Apr 2008 09:18:31 BST Charles Forsyth [EMAIL PROTECTED] wrote:
having said that, i now suspect that sending one byte into a zero-window is
not the problem.
because the one-byte probe can only be done if there is data to send, and i
already knew that a plain connection (dial
On Fri, 02 May 2008 08:49:24 BST John Stalker [EMAIL PROTECTED] wrote:
To ensure programmers will use good style, Bentley will lack goto. To
break out of nested loops, you can use the breakout statement.
This worries me. When I need to implement a finite state autonomon I
usually use
On Tue, 27 May 2008 15:02:15 PDT ron minnich [EMAIL PROTECTED] wrote:
OK, this is a long shot, but i'm running out of ideas.
Long, long ago, at a Usenix, I saw a talk by some adventurous
australians (are there any other kind?). It was concerning some neat
hardware designed for kernel
On Fri, 30 May 2008 15:27:12 PDT Skip Tavakkolian [EMAIL PROTECTED] wrote:
i need to build a monte carlo simulator to model a system. i
was first thinking of using libthread and channels, etc. but i'm
wondering if newsqueak would be a better fit. has it been used
for this?
Why Newsqueak?
Everything, in my experience, crashes QEMU. Nice try.
Just the opinion of me and my dog (who barks loudly when I shout
f**king QEMU - piece of f**king sh*t!).
I have used qemu/freebsd for the past 4 years or so. On the
whole it has worked quite well. I often use plan9, Windows
2000 and
On Fri, 13 Jun 2008 19:52:22 EDT erik quanstrom [EMAIL PROTECTED] wrote:
You don't need this sort of code in a virtualizable processor.
See for example
http://en.wikipedia.org/wiki/Popek_and_Goldberg_virtualization_requiremen
ts
i'm not convinced that the illusion that the virtualized
On Fri, 13 Jun 2008 20:39:48 EDT erik quanstrom [EMAIL PROTECTED] wrote:
On a T42 running FreeBSD, a stock FreeBSD-4.11/qemu gets
18MB/s plan9/qemu gets 3MB/s. Both tested by writing 100MB
from /dev/zero to a file. Neither needs any special drivers.
I think part of the performance
i find there's a certain simplicty in dealing directly
with hardware, provided one has documentation.
Provided it is complete and the h/w well designed and
interface regular. Unfortunately not all that common.
you continue with this claim without presenting evidence.
...
On Wed, 18 Jun 2008 22:57:27 +0200 Enrico Weigelt [EMAIL PROTECTED] wrote:
* erik quanstrom [EMAIL PROTECTED] wrote:
it makes sense for the storage managment function to present an
idealized block device while hiding details like disk replacement
and redundency.
Well, I intend to make
Please try it on 10.5 and see how it works.
Every time the option key is pressed, it generates 0xef8095
in addition to doing its button2 duty. Also, you can't use
option+apple key to escape out of full screen mode. This is
on 10.5.3
Its worse than that Skip -- I imagine many would rank Apple's time
machine greater than venti just because it puts a pretty GUI on top of
crap methodology versus doing something clever under the hood.
Pretty GUI doesn't hurt but it is the ease of use that makes
time machine popular. Kudos to
On OSX 9vx consistently sigsegv panics if you quickly resize
its window a few times, particluarly before it finishes
repainting. This doesn't happen (or is hard to trigger) when
rio is not up.
Running it under gdb reveals:
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason:
On Sun, 06 Jul 2008 17:20:12 EDT erik quanstrom [EMAIL PROTECTED] wrote:
what is the upside to an external magic file? as you've shown, you
can add a file type in 1 line of code. while the external magic file
isn't c, i would argue that it's still code.
Yes it is code but the advantage is
[Questions in the third para below.]
CMUCL initializes its state essentialy by loading a
previously dumped core image file. This is slow the first
time around but once the ~25MB core image is cached,
execution is really fast and you have access to a lot of
goodies. So a script like
On Mon, 07 Jul 2008 14:45:53 EDT erik quanstrom [EMAIL PROTECTED] wrote:
i'm assuming by core file you don't mean executable.
plan 9 already keeps an executable cache.
It contains executable code but it is not an executable in
the sense you don't directly feed it to exec(2). A lisp
process
On Mon, 07 Jul 2008 20:55:36 BST Charles Forsyth [EMAIL PROTECTED] wrote:
It contains executable code but it is not an executable in
the sense you don't directly feed it to exec(2). A lisp
in the script you gave earlier
#!/usr/local/bin/cmucl -script
(format t Hello,
On Mon, 07 Jul 2008 13:21:33 PDT David Leimbach [EMAIL PROTECTED] wrote:
(format t Hello, World!~%)
basically gets read then compiled then executed right? (thinking REPL
here)
Right? At least that's how SBCL works based on my understanding.
Well, it is not a read-eval-print-loop -- it
On Tue, 08 Jul 2008 08:07:59 PDT David Leimbach [EMAIL PROTECTED] wrote:
On Tue, Jul 8, 2008 at 7:08 AM, Dave Eckhardt
[EMAIL PROTECTED][EMAIL PROTECTED]
wrote:
cmucl is directly executable but it has only enough
intelligence to load a big lisp.core, which contains
all the smarts.
On Tue, 08 Jul 2008 22:12:10 BST C H Forsyth [EMAIL PROTECTED] wrote:
if you make it executable, i think you should also find that the resulting
executable has its contents read into memory on demand (ie, a page fault
causes
a read from the executable file), which might suit you.
Right. My
On Fri, 25 Jul 2008 08:32:22 PDT ron minnich [EMAIL PROTECTED] wrote:
so it can go here: http://bellard.org/qemu/download.html
might as well make it available ..
Not sure why qemu/download.html shows so few bootable images.
Another alternative is oszoo.org. See for instance
On Tue, 04 Nov 2008 20:15:04 +1300 Andrew Simmons [EMAIL PROTECTED] wrote:
I don't want to imply that Ron is quite such an old fart as me, but
somehow I don't get the impression that he was a kid in 1981, when
Time Bandits came out. Ron, if you could give some clue as to when
you saw the
It's not just the PHBs. I showed the original 9p (for 2.0.36) in 1998
to a fair number of linux people, and back then I had private name
spaces, union mounts, user level servers, in fact just about all you
get in plan 9 today and STILL don't get in linux.
They were strongly convinced there
On Mon, 01 Dec 2008 10:25:09 PST Roman V. Shaposhnik [EMAIL PROTECTED]
wrote:
P.S. I have always wanted to be able to trade namespaces
between different processes the same way file descriptors get
traded using #s. On the other hand, I have never ever possessed
enough insight into the
On Thu, 08 Jan 2009 12:09:51 EST ge...@plan9.bell-labs.com wrote:
You don't want to use an amd29k (even if you could get one).
They look cute on paper but their freeze-mode interrupt
handling is a Chinese puzzle and unless you use Ken's compiler
(previously called 9c), you're stuck with
On Mon, 12 Jan 2009 10:36:37 EST erik quanstrom quans...@quanstro.net wrote:
how do you get around the fact that the parallelism
is limited by the instruction set and the fact that one
slow sub-instruction could stall the whole instruction?
The hardware also has built-in support for
On Tue, 03 Mar 2009 10:11:10 PST Roman V. Shaposhnik r...@sun.com wrote:
On Tue, 2009-03-03 at 07:19 -0800, David Leimbach wrote:
My knowledge on this subject is about 8 or 9 years old, so check with your
local Python guru
The last I'd heard about Python's threading is that it
On Fri, 06 Mar 2009 10:47:20 PST Roman V Shaposhnik r...@sun.com wrote:
Clojure is definitely something that I would like to play
with extensively. Looks very promising from the outset,
so the only question that I have is how does it feel
when used for substantial things.
You can browse
On Fri, 06 Mar 2009 12:38:57 PST David Leimbach leim...@gmail.com wrote:
Things like Clojure, or Scala become a bit more interesting when the VM is
extended to allow tail recursion to happen in a nice way.
A lack of TCO is not something that will prevent you from
writing many interesting
On Tue, 24 Mar 2009 16:05:08 EDT Rahul Murmuria rahul.is.a...@gmail.com
wrote:
I am willing to explore this area. Maybe if /net reaches every router, such
metrics can be retrieved and exchanged between the routers like other router
OSes do (or maybe better than they already do) ?
I am
On Wed, 25 Mar 2009 09:00:58 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
While creating an
entire routing suite (such as Zebra/Quagga) is probably outside of the
scope of a 3 month project, I think a diligent student could probably
do
On Wed, 25 Mar 2009 21:25:07 CDT Eric Van Hensbergen eri...@gmail.com wrote:
Also, figuring out how multitouch works with plan 9 would be valuable
in itself -- although admitadly could be done without an iPhone.
Exactly what I was thinking while reading this thread! An
intuitive multitouch
suits lot's of people's needs.
On Thu, Mar 26, 2009 at 12:20 AM, Bakul Shah bakul+pl...@bitblocks.com wr=
ote:
On Wed, 25 Mar 2009 21:25:07 CDT Eric Van Hensbergen eri...@gmail.com =
=C2=A0wrote:
Also, figuring out how multitouch works with plan 9 would be valuable
in itself -- although
On Sun, 05 Apr 2009 15:54:19 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
2009/4/5 ron minnich rminn...@gmail.com:
On Sun, Apr 5, 2009 at 12:12 PM, Devon H. O'Dell devon.od...@gmail.com wr
ote:
2009/4/5 Devon H. O'Dell devon.od...@gmail.com:
Ideas?
Works fine if I turn off DMA.
On Sun, 05 Apr 2009 16:56:51 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
2009/4/5 Bakul Shah bakul+pl...@bitblocks.com:
On Sun, 05 Apr 2009 15:54:19 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
2009/4/5 ron minnich rminn...@gmail.com:
On Sun, Apr 5, 2009 at 12:12 PM, Devon H
On Thu, 02 Apr 2009 20:28:57 BST roger peppe rogpe...@gmail.com wrote:
2009/4/2 fge...@gmail.com:
i wanted to go a little beyond sh while stopping
short of the type profligacy of most other languages,
hoping to create a situation where many commands
used exactly the same types, and hence
On Mon, 06 Apr 2009 12:02:21 EDT erik quanstrom quans...@quanstro.net wrote:
If program A outputs numbers in big-endian order and B
expects input in little-endian order, A|B won't do the right
thing.
non-marshaled data considered harmful. film at 11. âº
In effect you are imposing a
On Thu, 09 Apr 2009 15:31:35 MDT andrey mirtchovski mirtchov...@gmail.com
wrote:
ps, the quote is Simplify, then add lightness
Makes perfect sense for Chapman's purposes. Replace steel
with aluminium. Fiberglass instead of sheet metal and so on.
Unfortunately we don't have exact analogs in
On Thu, 16 Apr 2009 18:24:36 BST roger peppe rogpe...@gmail.com wrote:
2009/4/6 Bakul Shah bakul+pl...@bitblocks.com:
On Thu, 02 Apr 2009 20:28:57 BST roger peppe rogpe...@gmail.com =C2=A0w=
rote:
a pipeline is an amazingly powerful thing considering
that it's not a turing-complete
On Thu, 16 Apr 2009 21:25:06 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
That said, I don't disagree. Perhaps Plan 9's environment hasn't been
assumed to contain malicious users. Which brings up the question: Can
Plan 9 be safely run in a potentially malicious environment? Based on
On Fri, 17 Apr 2009 08:14:12 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
2009/4/17 erik quanstrom quans...@quanstro.net:
What if each user can have a separate IP stack, separate
(virtualized) interfaces and so on?
already possible, but you do need 1 physical ethernet
per ip stack
On Mon, 20 Apr 2009 16:33:41 EDT erik quanstrom quans...@coraid.com wrote:
let's take the path /sys/src/9/pc/sdata.c. for http, getting
this path takes one request (with the prefix http://$server)
with 9p, this takes a number of walks, an open. then you
can start with the reads. only the
On Tue, 21 Apr 2009 10:50:18 EDT erik quanstrom quans...@quanstro.net wrote:
On Tue Apr 21 10:34:34 EDT 2009, n...@lsub.org wrote:
Well, if you don't have flush, your server is going to keep a request
for each process that dies/aborts.
If a process crashes, who sends the Tflush? The
On Tue, 21 Apr 2009 17:03:07 BST roger peppe rogpe...@gmail.com wrote:
the idea with my proposal is to have an extension that
changes as few of the semantics of 9p as possible:
C-S Tsequence tag=3D1 sid=3D1
C-S Topen tag=3D2 sid=3D1 fid=3D20 mode=3D0
C-S Tread tag=3D3 sid=3D1 fid=3D20
Nils Holm's Scheme interpreter @ http://t3x.org/s9fes has
been available for a few months now. It runs on plan9 though
not on inferno. Like Chibi-scheme it too is fairly small.
(about 5.5Klocs of C, 1.4Klock of Scheme).
I am more interested in Gambit as it is one of the fastest
Scheme
But how do you make them? I played with some TTF font generators about
10 years ago that I'm sure I illegally obtained somehow, but I realize
that I have zero idea of how fonts are designed and packaged. Does
anybody know anything about how fonts are created and packaged (info
on subfonts
On Thu, 09 Jul 2009 13:44:20 -0800 Jack Johnson knapj...@gmail.com wrote:
On Thu, Jul 9, 2009 at 1:34 PM, erik quanstromquans...@quanstro.net wrote:
the problem i have with literate programming is that it
tends to treat code like a terse and difficult-to-understand
footnote.
And thus,
Has anyone extended the idea of channels where the
sender/receiver are on different machines (or at least in
different processes)? A netcat equivalent for channels!
Actual plumbing seems easy: one can add a `proxy' thread in
each process to send a message via whatever inter process
mechanism is
On Sat, 18 Jul 2009 06:25:19 EDT erik quanstrom quans...@quanstro.net wrote:
On Sat Jul 18 03:46:01 EDT 2009, bakul+pl...@bitblocks.com wrote:
Has anyone extended the idea of channels where the
sender/receiver are on different machines (or at least in
different processes)? A netcat
On Sat, 18 Jul 2009 10:20:11 PDT Skip Tavakkolian 9...@9netics.com wrote:
Or is there a better idea? This certainly seems preferable
to RPC or plain byte pipes for communicating structured
values.
i have some incomplete ideas that are tangentially related to this --
more for handling
On Mon, 03 Aug 2009 20:12:08 PDT David Leimbach leim...@gmail.com wrote:
Wow Where's parallels 4. I doubt I qualify for a free one. And VMWare
Fusion really sucks with Plan 9 at the moment :-(
qemu works well enough for me on FreeBSD Linux but not on a
Mac. VirtualBox doesn't run
On Tue, 04 Aug 2009 05:47:25 PDT David Leimbach leim...@gmail.com wrote:
On Tue, Aug 4, 2009 at 12:25 AM, Bakul Shah
bakul+pl...@bitblocks.combakul%2bpl...@bitblocks.com
wrote:
On Mon, 03 Aug 2009 20:12:08 PDT David Leimbach leim...@gmail.com
wrote:
Wow Where's parallels 4
On Tue, 04 Aug 2009 08:25:53 PDT David Leimbach leim...@gmail.com wrote:
On Tue, Aug 4, 2009 at 8:20 AM, Bakul Shah
bakul+pl...@bitblocks.combakul%2bpl...@bitblocks.com
wrote:
...
I think vbox devices and recompiler are based on qemu but I
don't really know. IIRC early qemu did
On Tue, 04 Aug 2009 13:46:31 EDT erik quanstrom quans...@quanstro.net wrote:
Anyway, a couple of areas to look into, if you want plan9 on
vbox: try changing the memory layout of plan9 or figure out
what qemu did to make plan9 run well and apply that change to
vbox.
what makes you think
On Sat, 15 Aug 2009 05:24:01 +0800 sqweek sqw...@gmail.com wrote:
On 12/08/2009, Tim Newsham news...@lava.net wrote:
Draw the line at what the hardware can be told to decode
with a flip of a register? The driver interface can easily
accomodate arbitrary encoding names (see inferno's
On Fri, 21 Aug 2009 21:34:03 EDT Akshat Kumar aku...@mail.nanosouffle.net
wrote:
If I start QEMU with the option to boot directly from
the HD image, as opposed to booting from network,
then it starts up fine - but then the kernel is different
also. I don't know what part of this is really
On Mon, 31 Aug 2009 09:25:36 CDT Eric Van Hensbergen eri...@gmail.com wrote:
Why not have a synthetic file system interface to ndb that allows it
to update its own files? I think this is my primary problem.
Granular modification to static files is a PITA to manage -- we should
be using
On Wed, 02 Sep 2009 12:32:53 BST Eris Discordia eris.discor...@gmail.com
wrote:
Although, you may be better off reading SICP as intended, and use MIT
Scheme on either Windows or a *NIX. The book (and the freaking language) is
already hard/unusual enough for one to not want to get confused
On Mon, 31 Aug 2009 11:33:13 CDT Eric Van Hensbergen eri...@gmail.com wrote:
On Mon, Aug 31, 2009 at 11:16 AM, Bakul Shahbakul+pl...@bitblocks.com wrote:
An intriguing idea that can point toward a synth fs interface
to a dbms or search results But I don't think this would
be a
On Wed, 02 Sep 2009 08:20:52 PDT Roman V Shaposhnik r...@sun.com wrote:
On Wed, 2009-09-02 at 10:04 +0200, Anant Narayanan wrote:
Mac OS 10.6 introduced a new C compiler frontend (clang), which added
support for blocks in C [1]. Blocks basically add closures and
anonymous functions to
On Thu, 03 Sep 2009 07:29:53 BST Eris Discordia eris.discor...@gmail.com
wrote:
I mean, I never got past SICP Chapter 1 because that first chapter got me
asking, why this much hassle?
May be you had an impedance mismatch with SICP?
P.S. I'm leaving. You may now remove your
On Fri, 04 Sep 2009 00:44:35 EDT erik quanstrom quans...@quanstro.net wrote:
that sucker is on the stack. by-by no-execute stack.
I don't think so. See below.
how does it get to the stack? is it just copied from
the text segment or is it compiled at run time?
I don't think I
On Thu, 03 Sep 2009 22:35:35 PDT David Leimbach leim...@gmail.com wrote:
Actually, reading on a bit more they deal with the variable capture
talking about const copies.
Automatic storage variables not marked with __block are imported as
const copies.
The simplest example is that of
On Fri, 04 Sep 2009 00:47:18 PDT David Leimbach leim...@gmail.com wrote:
On Fri, Sep 4, 2009 at 12:11 AM, Bakul Shah
bakul+pl...@bitblocks.combakul%2bpl...@bitblocks.com
wrote:
But this has no more to do with parallelism than any other
feature of C. If you used __block vars in a block
On Fri, 04 Sep 2009 08:04:40 PDT David Leimbach leim...@gmail.com wrote:
On Fri, Sep 4, 2009 at 7:41 AM, Bakul Shah
bakul+pl...@bitblocks.combakul%2bpl...@bitblocks.com
wrote:
On Fri, 04 Sep 2009 00:47:18 PDT David Leimbach leim...@gmail.com
wrote:
On Fri, Sep 4, 2009 at 12:11 AM
On Tue, 08 Sep 2009 08:31:28 PDT David Leimbach leim...@gmail.com wrote:
Having wrestled with this stuff a little bit, and written something. I
can immediately see how one can get away from needing to select in code so
much, and fire off blocks to handle client server interactions etc.
On Mon, 14 Sep 2009 12:43:42 EDT erik quanstrom quans...@quanstro.net wrote:
I am going to try my hands at beating a dead horse:)
So when you create a Venti volume, it basically writes '0's' to all the
blocks of the underlying device right? If I put a venti volume on a AoE
device which
8 bits/byte * 1e12 bytes / 1e14 bits/ure = 8%
Isn't that the probability of getting a bad sector when you
read a terabyte? In other words, this is not related to the
disk size but how much you read from the given disk. Granted
that when you resilver you have no choice but to read
On Mon, 21 Sep 2009 14:02:40 EDT erik quanstrom quans...@quanstro.net wrote:
i would think this is acceptable. at these low levels, something
else is going to get you -- like drives failing unindependently.
say because of power problems.
8% rate for an array rebuild may or may not
On Mon, 21 Sep 2009 16:30:25 EDT erik quanstrom quans...@quanstro.net wrote:
i think the lesson here is don't by cheep drives; if you
have enterprise drives at 1e-15 error rate, the fail rate
will be 0.8%. of course if you don't have a raid, the fail
rate is 100%.
if that's not
On Wed, 23 Sep 2009 02:49:44 +0800 Fernan Bolando fernanbola...@mailc.net
wrote:
Hi all
nhc98 uses a few of
static unsigned startLabel[]={};
which is a zero length array. It appears that it uses this as
reference to calculate the correct pointer for a bytecode.
pcc does not allow
On Sun, 04 Oct 2009 03:03:27 +1100 Sam Watkins s...@nipl.net wrote:
find -name '*.c' | xargs cat | cc - # this clever cc can handle it :)
This program works fine until there are no .c files to be found, in that case
it hangs, waiting for one on stdin! This is a hazard to shell
Is this what you are trying to do?
$ cat b.y 'EOF'
%token ATOM REP
%%
blocks: block | block blocks;
block: ATOM | REP block | '[' blocks ']';
%%
EOF
$ bison b.y
$
On Wed, 21 Oct 2009 19:52:41 +0200 Rudolf Sykora rudolf.syk...@gmail.com
wrote:
Hello,
sorry for an off-topic thing. But I guess
On Sat, 05 Dec 2009 15:03:44 EST erik quanstrom quans...@quanstro.net wrote:
The OS support I am talking about:
a) the fork behavior on an open file should be available
*without* forking. dup() doesn't cut it (both fds share
the same offset on the underlying file). I'd call the new
On Sat, 05 Dec 2009 15:27:02 EST erik quanstrom quans...@quanstro.net wrote:
To be precise, both fds have their own pointer (or offset)
and reading N bytes from some offset O must return the same
bytes.
wrong. /dev/random is my example.
You cut out the bit about buffering where I
On Sat, 02 Jan 2010 14:47:26 EST erik quanstrom quans...@quanstro.net wrote:
my beef with xargs is only that it is used as an excuse
for not fixing exec in unix. it's also used to bolster the
that's a rare case argument.
I often do something like the following:
find . -type f condition
On Sat, 02 Jan 2010 20:49:39 EST erik quanstrom quans...@quanstro.net wrote:
And can eat up a lot of memory or even run out of it. On a
2+ year old MacBookPro find -x / takes 4.5 minutes for 1.6M
files and 155MB to hold paths. My 11 old machine has 64MB
and over a million files on a
On Fri, 08 Jan 2010 14:12:39 EST ge...@plan9.bell-labs.com wrote:
I don't have enough experience with VirtualBox to make a sensible
comparison.
Plan9 on virtualBox is unusably slow.
The thing that none of the VM monitors seem to offer (though I'd love
to be proven wrong) is debugging tools
On Sun, 07 Feb 2010 15:19:58 MST Lyndon Nerenberg (VE6BBM/VE7TFX)
lyn...@orthanc.ca wrote:
i suspect the rationale was that, finally, C provided a way
outside the preprocessor to give symbolic names to constants.
why restrict that to int?
Because enum's have been int's since their
On Sat, 20 Mar 2010 22:48:53 PDT ron minnich rminn...@gmail.com wrote:
...
So here is the result: very minor extension to the kernel code, shell
script a bit longer (25 lines!) but what happens is e.g. you trace an
rc, and for each fork/exec that happens, a new truss display pops up
On Sun, 21 Mar 2010 14:03:14 EDT Devon H. O'Dell devon.od...@gmail.com
wrote:
2010/3/21 Bakul Shah bakul+pl...@bitblocks.com:
[snip]
What's really missing is a whole book on hands on OS hacking
along the lines of the Art of Electronics or SICP (Structure
and Interpretation of Computer
On Fri, 16 Apr 2010 16:58:00 PDT Corey co...@bitworthy.net wrote:
The Plan 9ers have successfully prevented the Plan Xers from encroaching,
but it's the Plan Xers who are going to find new and interesting expressions
of a Plan 9 based operating system, however in order to bootstrap, the Plan
On Sat, 17 Apr 2010 22:35:53 BST C H Forsyth fors...@vitanuova.com wrote:
perhaps Plan 9 is just the Black Books of software?
You mean with 9fans playing the role of Bernard Black? Could
be -- if you squint a bit Black Books is an anarchic place,
with piles of books, cartons of old
On Wed, 21 Apr 2010 15:40:19 +0200 tlaro...@polynum.com wrote:
Hello,
Still about integer arithmetic.
...
Conclusion (apparently): gcc always translate div involving power of two
to binary manipulations, while (apparently) ken-cc does not.
gcc may choose to implement / with
On Thu, 22 Apr 2010 17:29:53 +0200 tlaro...@polynum.com wrote:
Data:
Under NetBSD/gcc, I have the following values:
before: x1:=5440, x2:=-5843, x3:=78909
after: x1:=5440, x2:=-201, x3:=18166, r:=6827 t:=30232
Under Plan9/gcc, I have the following values:
before:
On Thu, 22 Apr 2010 21:32:36 +0200 tlaro...@polynum.com wrote:
On Thu, Apr 22, 2010 at 03:08:40PM -0400, ge...@plan9.bell-labs.com wrote:
What type is `smallnumber'?
typedef unsigned char smallnumber;
Aha!
translated from Pascal:
small_number=0..63;
IIRC in C89
On Thu, 22 Apr 2010 23:15:51 +0200 tlaro...@polynum.com wrote:
This is: signed long + signed long + unsigned char.
Do you mean that there is first promotion :
1) unsigned char is promoted to unsigned int (A6.1).
As per C89 in this case the unsigned char value should be
promoted to a
On Fri, 23 Apr 2010 19:53:24 BST C H Forsyth fors...@vitanuova.com wrote:
As per C89 in this case the unsigned char value should be
promoted to a *signed* int value. The sum will be of type
signed int and so the division will do the right thing. In
kencc case it seems the sum has type
On Thu, 29 Apr 2010 11:34:44 EDT erik quanstrom quans...@quanstro.net wrote:
Wasn't IL somewhat abandoned because to make it as good as TCP you
basically had to implement TCP anyway?
due to a failure of vision, the internet only does
well with certain types of ip packets.
:-)
il is
On Thu, 29 Apr 2010 13:23:00 EDT erik quanstrom quans...@quanstro.net wrote:
9p, like aoe, is a ping-pong protocol. each message requires an ack.
therefore, the transport layer doesn't need flow control.
Therefore, it is also not able to utilise bandwidth
effectively over longhaul
On Fri, 30 Apr 2010 01:01:59 EDT erik quanstrom quans...@quanstro.net wrote:
If the sender-receiver pipe can hold N bytes and the sender
is streaming (that is, keeping the pipe full), the sender
*will* be ahead of the receiver by N bytes. So a *streaming*
protcol has to allow it to be N
On Fri, 30 Apr 2010 12:13:59 EDT erik quanstrom quans...@labs.coraid.com
wrote:
i don't see any reason why 9p couldn't use some of the same
congestion control ideas. the trick would be to feed back packet loss
detection and retransmission info to the point where file io gets
turned
On Sat, 08 May 2010 03:54:26 +1000 Tully Gray tullyg...@arc.net.au wrote:
I have modified Erik Quanstrom's raw socket ethernet driver
for 9vx so that it uses the Linux kernel's tap device.
Neat!
if((fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) 0)
---
if((fd =
On Tue, 18 May 2010 18:54:21 PDT David Leimbach leim...@gmail.com wrote:
Were all of the binaries within recompiled against this code? Running 9vx
on my iMac is pretty smooth!
vx32/src/9vx.*.gz are the same as before (in case you are running those).
Compiling 9vx on a MAC OS 10.6.3
On Wed, 19 May 2010 08:09:50 PDT ron minnich rminn...@gmail.com wrote:
The format arose out of discussions with nemo and others.
It is a straight text layout of system call params and return. The =
separates the params and return. The format is:
pid textname syscall-name pc [params] =
On Wed, 19 May 2010 10:41:26 PDT ron minnich rminn...@gmail.com wrote:
On Wed, May 19, 2010 at 10:18 AM, Bakul Shah bakul+pl...@bitblocks.com wrote
0. Name syscalltrace is too long :-)
pick a name and I'll change it.
I used strace but don't really care what you call it as long
On Wed, 19 May 2010 10:53:59 PDT ron minnich rminn...@gmail.com wrote:
I'll only take that patch if it does NOT include stdio.h.
Well, you have the trivial diff so do what you want.
As for output ... I'm conflicted on output on 1 vs. 2. But it is nice
that you can see normal output of the
On Wed, 19 May 2010 11:33:24 PDT ron minnich rminn...@gmail.com wrote:
On Wed, May 19, 2010 at 11:23 AM, Bakul Shah bakul+pl...@bitblocks.com
wrote:
Ok! I don't feel strongly either way. =A0But I hope you do
consider counted bytestrings to represent random memory.
It is cheap to parse
On Wed, 19 May 2010 13:38:36 PDT ron minnich rminn...@gmail.com wrote:
On Wed, May 19, 2010 at 1:30 PM, Bakul Shah bakul+pl...@bitblocks.com wro=
te:
You write startsyscall to pid/syscall for every trace
buffer read -- don't quite understand why that is needed.
It gives you the option
On Wed, 19 May 2010 15:25:52 PDT ron minnich rminn...@gmail.com wrote:
On Wed, May 19, 2010 at 3:02 PM, Bakul Shah bakul+pl...@bitblocks.com wrote
:
It gives you the option of not restarting the system call until later.
There could be more complex usage scenarios.
I don't understand
On Wed, 19 May 2010 17:32:19 PDT ron minnich rminn...@gmail.com wrote:
On Wed, May 19, 2010 at 5:26 PM, Bakul Shah bakul+pl...@bitblocks.com wro=
te:
time ratrace -o /dev/null -c mk # about 19.67 seconds
did you want [2]/dev/null?
No, because that eats time output as well. My change
1 - 100 of 661 matches
Mail list logo
