Title: Frame Forward Example
Please visit http://www.infogambling.com/eng/default.asp.
This script fails on Linux 2.2.19, AS 3.4, gnu libc 2.1.2:
set fd [open xyz w]
puts $fd "abcdefg"
close $fd
set fd [open xyz r+]
seek $fd 4
puts -nonewline $fd "x"
ns_ftruncate $fd 3
close $fd
return
After this executes, the file should contain 3 bytes because of the
ns_ftruncate call.
Instead
+-- On Feb 22, Jim Wilcoxson said:
> set fd [open xyz w]
> puts $fd "abcdefg"
> close $fd
>
> set fd [open xyz r+]
> seek $fd 4
> puts -nonewline $fd "x"
What happens if you put "flush $fd" right here, after the puts and
before the ns_ftruncate?
> ns_ftruncate $fd 3
> close $fd
> return
This was a posting from the PostgreSQL crew. I'm posting it here for two
reasons:
1. Maybe someone in our discussion group might be able to help who hasn't
seen the original message.
2. I think the method I gave in my response below might be a good way to
get work done on AOLserver module featur
Hey Rob,
I just tried your idea and it works correctly if flush is added. I
figured this is probably a libc bug but thought I'd post it here in
case others have trouble with it. Might be a good idea to add a flush
inside ns_ftruncate as a workaround.
Jim
>
> +-- On Feb 22, Jim Wilcoxs
+-- On Feb 22, Jim Wilcoxson said:
> I just tried your idea and it works correctly if flush is added. I
> figured this is probably a libc bug but thought I'd post it here in
> case others have trouble with it. Might be a good idea to add a flush
> inside ns_ftruncate as a workaround.
Tc
In the 'ns_cond wait' command:
http://www.aolserver.com/docs/devel/tcl/tcl-api.adp#ns_cond
What is the mutex lock FOR? Do I need to use one mutex per
cond/event, or one mutex per thread per event, or what?
The docs - "The lockid argument is the id of a mutex lock." - are
notably unhelpful, an
+-- On Feb 22, Andrew Piskorski said:
> In the 'ns_cond wait' command:
> http://www.aolserver.com/docs/devel/tcl/tcl-api.adp#ns_cond
>
> What is the mutex lock FOR? Do I need to use one mutex per
> cond/event, or one mutex per thread per event, or what?
>
> The docs - "The lockid argume
I found it, there is a site here that is doing something like what you suggest. I
don't know if you have to sell your soul to the devil or not.
http://www.osdlab.org/
Ian A. Harding
Programmer/Analyst II
Tacoma-Pierce County Health Department
(253) 798-3549
mailto: [EMAIL PROTECTED]
>>> [EMAI
Thanks Rob, that helps a lot. But I'm still confused:
Why do I need to use a separate flag value in addition to the mutex?
In other words, why can't I just do something like:
The code in T1:
ns_mutex lock $mutex
ns_cond wait $event_id $mutex_id $timeout
The code in T2:
ns_mutex loc
+-- On Feb 22, Andrew Piskorski said:
> Why do I need to use a separate flag value in addition to the mutex?
> In other words, why can't I just do something like:
If T1 starts T2, after locking $mutex, then T1 can just wait on
$cond. But sometimes you have two or more independent threads
On Fri, Feb 22, 2002 at 03:57:26PM -0500, Andrew Piskorski wrote:
> Why do I need to use a separate flag value in addition to the mutex?
Oh. I think I just realized (at least one reason) why. The flag
value, is so if T2 does its ns_cond broadcast BEFORE T1 starts doing
ns_cond wait, that T1 wi
This is a stripped down version of a template system I am working on. The
problem I am having is that by specification (annoyingly :) ) regsub has
this caveat:
"If subSpec contains a ``&'' or ``\0'', then it is replaced in the
substitution with the portion of string that matched exp. If subSpec
+-- On Feb 22, Andrew Piskorski said:
> Oh. I think I just realized (at least one reason) why. The flag
> value, is so if T2 does its ns_cond broadcast BEFORE T1 starts doing
> ns_cond wait, that T1 will know that the event already occurred,
> right? Is that the only reason?
Yes.
It d
+-- On Feb 22, Patrick Spence said:
> My problem is I cannot insert the \ before the & and then wrap with braces..
> I am pulling the string to convert from a database and piping it through my
> macro routine and I have not been able to figure out how to get it to work
> right.
You need t
Patrick Spence wrote:
...
> proc insert_macro { thestring key macro} {
> regsub -all -- $key $thestring $macro thestring;
> return "$thestring"
> }
It's not quite clear from your explanation what you really want, and
how you want the & handled. However, I suspect that 'string map
If you're using nsd8x (and not nsd76) you can get your desired result by
using [string map] instead of [regsub]:
proc insert_macro { thestring key macro} {
return [string map [list $key $macro] $thestring]
}
See:
http://aolserver.com/docs/devel/tcl/tcl-language/tcl8.x/TclCmd/stri
Jeff, Rob, Michael (and others who reply while I write this)
Very many thanks.. :) I still don't have regexp down very well and this has
been frustrating me for several hours now.. This is why I love this list,
several helpful people with lots of good help.. :)
Its up and running now.. basical
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