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Re: Application for obtaining caller ID from hacked box...?
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Hi Patrick,
Thanks for the reply.
I'll dig out a Win2K box tonight and retest - if that doesn't work then I
think your suggestion of a recompile is the next logical step.
Also, I've just retested on my work machine (another XP Pro box) and it has
xap-meteor consuming 50% CPU which is what you'd expect on a Hyperthreaded
machine. Out of interest, how much CPU utilisation does xap-meteor use on
your Win2K machine...?
I've just had a look at your source and at the cygwin documentation which
states:
> Select
>
> The UNIX select function is another call that does not map cleanly on
top
> of the Win32 API. Much to our dismay, we discovered that the Win32
select=
in
> Winsock only worked on socket handles. Our implementation allows
select t=
o
> function normally when given different types of file descriptors
(sockets=
,
> pipes, handles, and a custom /dev/windows Windows messages
pseudo-device)=
.
>
> Upon entry into the select function, the first operation is to sort
the
> file descriptors into the different types. There are then two cases to
> consider. The simple case is when at least one file descriptor is a
type
> that is always known to be ready (such as a disk file). In that case,
> select returns immediately as soon as it has polled each of the other
> types to see if they are ready. The more complex case involves waiting
fo=
r
> socket or pipe file descriptors to be ready. This is accomplished by
the
> main thread suspending itself, after starting one thread for each type
of
> file descriptor present. Each thread polls the file descriptors of its
> respective type with the appropriate Win32 API call. As soon as a
thread
> identifies a ready descriptor, that thread signals the main thread to
wak=
e
> up. This case is now the same as the first one since we know at least
one
> descriptor is ready. So select returns, after polling all of the file
> descriptors one last time.
>
Not sure if this explains anything or not.
Many thanks,
Andy.
On 12/8/05, Patrick Lidstone (Personal E-mail) <patrick@xxxxxxx>
wrote=
:
>
> I checked it out here, and it works fine under Win2k. I don't have an
XP
> box to hand, I will see if I can lay my hands on one. In the meantime
I'd
> suggest a recompile of the source against the current version of
cygwin a=
s a
> starting point?
>
> Patrick
>
> ------------------------------
> *From:* Andrew Kilgore [mailto:andrew.kilgore@xxxxxxx]
> *Sent:* 08 December 2005 00:38
> *To:* xap_automation@xxxxxxx
> *Subject:* Re: [xap_automation] Application for obtaining caller ID
from
> hacked box...?
>
> Hi Patrick,
>
> I've just retested xap-meteor on XP Pro (SP2) with the same results
:o(
> Any light you can shed on this would be greatly appreciated.
> Just let me know if you require any more details.
>
> Many thanks,
> Andy.
>
> On 12/7/05, Andrew Kilgore <andrew.kilgore@xxxxxxx> wrote:
> >
> > Hi Patrick,
> >
> > I was testing on XP (Home) SP2 - I can probably try XP Pro or
Win2K
> > tonight.
> > I agree that this is odd behaviour especially as no one else
seems to
> > have reported it.
> > Possibly another one of those "Just me" things ;o)
> >
> > Many thanks,
> > Andy.
> >
> > On 12/7/05, Patrick Lidstone (Personal E-mail) <
patrick@xxxxxxx>
> > wrote:
> > >
> > >
> > > > However, this presented another problem.
> > > > As the Meteor connector is cross platform I doubt
whether it makes
> > > use of any of the Windows specific COM functions (i.e.
> > > WaitForCommMask()). This
> > > > means that it polls the COM port and results in the
CPU maxing out
> > > :o(
> > >
> > > If you are seeing it consuming max-cpu, then it's likely
that the
> > > meteor code is missing a select on the poll - I will take a
look. I'v=
e used
> > > the Cygwin com-port support under windows extensively in
general, and
> > > it works just fine. It certainly shouldn't max out the cpu.
Out of in=
terest,
> > > which version of windows are you using?
> > >
> > > Patrick
> > >
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<html><body>
Hi Patrick,<br>
<br>
Thanks for the reply.<br>
<br>
I'll dig out a Win2K box tonight and retest - if that doesn't work then
I think your suggestion of a recompile is the next logical step.<br>
<br>
Also, I've just retested on my work machine (another XP Pro box) and it
has xap-meteor consuming 50% CPU which is what you'd expect on a
Hyperthreaded machine. Out of interest, how much CPU utilisation does
xap-meteor use on your Win2K machine...?<br>
<br>
I've just had a look at your source and at the cygwin documentation which
states:<br>
<blockquote style="border-left: 1px solid rgb(204, 204, 204);
margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"
class="gmail_quote">
<h3 class="title">Select</h3>
<p>The UNIX select function is another
call that does not map cleanly on top of the Win32 API. Much to our
dismay, we discovered that the Win32 select in Winsock only worked on
socket handles. Our implementation allows select to function normally
when given different types of file descriptors (sockets, pipes,
handles, and a custom /dev/windows Windows messages
pseudo-device).</p>
<p>Upon entry into the select function, the first
operation is to sort the file descriptors into the different types.
There are then two cases to consider. The simple case is when at
least one file descriptor is a type that is always known to be ready
(such as a disk file). <span style="color: rgb(255, 0,
0);">In that case, select returns immediately</span> as
soon as it has polled each of the other types to see if they are
ready. The more complex case involves waiting for socket or pipe file
descriptors to be ready. This is accomplished by the main thread
suspending itself, after starting one thread for each type of file
descriptor present. Each thread polls the file descriptors of its
respective type with the appropriate Win32 API call. As soon as a
thread identifies a ready descriptor, that thread signals the main
thread to wake up. This case is now the same as the first one since
we know at least one descriptor is ready. So select returns, after
polling all of the file descriptors one last time.</p>
</blockquote>
Not sure if this explains anything or not.<br>
<br>
Many thanks,<br>
Andy.<br><br><div><span
class="gmail_quote">On 12/8/05, <b
class="gmail_sendername">Patrick Lidstone (Personal
E-mail)</b> <<a href="mailto:patrick@xxxxxxx";>patrick@xxxxxxx</a>>
wrote:</span><blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt
0.8ex; padding-left: 1ex;">
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial" size="2">I
checked it out here, and it works fine under Win2k. I
don't have an XP box to hand, I will see if I can lay my hands on one. In
the
meantime I'd suggest a recompile of the source against the current version
of
cygwin as a starting point?</font></span></div>
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial"
size="2"></font></span> </div>
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial"
size="2">Patrick</font></span></div><br>
<blockquote style="border-left: 2px solid rgb(0, 0, 255);
padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div align="left" dir="ltr"
lang="en-us">
<hr>
<font face="Tahoma" size="2"><span
class="q"><b>From:</b> Andrew Kilgore
[mailto:<a href="mailto:andrew.kilgore@xxxxxxx";
target="_blank" onclick="return
top.js.OpenExtLink(window,event,this)">andrew.kilgore@xxxxxxx</a>]
<br></span><b>Sent:</b> 08 December 2005
00:38<span class="q"><br><b>To:</b> <a
href="mailto:xap_automation@xxxxxxx";
target="_blank" onclick="return
top.js.OpenExtLink(window,event,this)">xap_automation@xxxxxxx</a><br><b>Subject:</b>
Re:
[xap_automation] Application for obtaining caller ID from hacked
box...?<br></span></font><br></div>
<div><span class="e"
id="q_108096a75352c03c_5"><div></div>Hi
Patrick,<br><br>I've just retested xap-meteor on XP Pro (SP2)
with the same results :o(<br>Any light you can shed on this would be
greatly
appreciated.<br>Just let me know if you require any more
details.<br><br>Many
thanks,<br>Andy.<br><br>
<div><span class="gmail_quote">On 12/7/05, <b
class="gmail_sendername">Andrew
Kilgore</b> <<a href="mailto:andrew.kilgore@xxxxxxx";
target="_blank" onclick="return
top.js.OpenExtLink(window,event,this)">andrew.kilgore@xxxxxxx</a>>
wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px
solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left:
1ex;">Hi
Patrick,<br><br>I was testing on XP (Home) SP2 - I can probably
try XP Pro
or Win2K tonight.<br>I agree that this is odd behaviour especially as
no one
else seems to have reported it.<br>Possibly another one of those
"Just me"
things ;o)<br><br>Many thanks,<br>Andy.
<div><span><br><br>
<div><span class="gmail_quote">On 12/7/05, <b
class="gmail_sendername">Patrick
Lidstone (Personal E-mail)</b> <<a href="mailto:patrick@xxxxxxx";
target="_blank" onclick="return
top.js.OpenExtLink(window,event,this)">
patrick@xxxxxxx</a>> wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px
solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left:
1ex;"><span><font color="#0000ff"
face="Arial" size="2"></font>
<div align="left"
dir="ltr"><br><span><font
color="#0000ff" face="Arial"
size="2">> </font></span>However,
this presented another
problem.<br><span><font color="#0000ff"
face="Arial" size="2"><font
color="#000000" face="Times New Roman"
size="3">></font> </font></span>As
the Meteor connector is cross
platform I doubt whether it makes use of any of the Windows specific COM
functions (i.e. WaitForCommMask()). This <span><font
color="#0000ff" face="Arial"
size="2"> </font></span></div>
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial"
size="2">>
</font> </span>means that it polls the COM port and
results in the
CPU maxing out :o(<br><span><font color="#0000ff"
face="Arial"
size="2"> </font></span></div></span>
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial" size="2">If
you
are seeing it consuming max-cpu, then it's likely that the meteor code is
missing a select on the poll - I will take a look. I've used the
Cygwin com-port support under windows
extensively</font> <font color="#0000ff"
face="Arial" size="2">in general, and it works just
fine. It
certainly shouldn't max out the cpu. Out of interest, which version of
windows are you using?</font></span></div><span>
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial"
size="2"></font></span> </div>
<div align="left" dir="ltr"><span><font
color="#0000ff" face="Arial"
size="2">Patrick</font></span></div></span>
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