Re: [Flightgear-devel] Re: Sim Reset

[Christian Mayer]

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Vassilii Khachaturov schrieb:
> IIRC a destructor can't call virtual methods, so if the interface
> needs to do some kind of cleanup it can only be something pertaining
> to this instance and using just the compile-time resolved calls.
> I haven't looked at the code you cite above so this might be irrelevant
> there, but I am a bit suspicious because of the name "FGInterface" that
> hints at an abstract class.

Not knowing if it helps (I don't even know about what part of the code
you are talking about):

Virtual functions can be avoided in many cases by using the so called
Barton-Nackman trick (http://en.wikipedia.org/wiki/Barton-Nackman)...

CU,
Christian



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Re: [Flightgear-devel] Re: Sim Reset

[Stefan Seifert]

Alex Romosan wrote:

Alex Romosan <[EMAIL PROTECTED]> writes:
  
+  delete Atmosphere; Atmosphere=0;
  



I know there's no real styleguide for FlightGear. But please let's stick 
to the one command per line rule. Lines are not that expensive after all :)


And I think it's even more obvious, when you can look if only every odd 
line is a delete.


delete Atmosphere;
Atmosphere=0;
delete FCS;
FCS=0;
delete Propulsion;
Propulsion=0;


Nine

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Re: [Flightgear-devel] Re: Sim Reset

[Vassilii Khachaturov]

> > On Monday 19 December 2005 21:26, Alex Romosan wrote:
> >> > The Interface is deleted and a new one is created.
> >> > That is a bit crude, but it works ...
> >>
> >> it doesn't work anymore though:
> >>
> >> Program received signal SIGSEGV, Segmentation fault.
> >> [Switching to Thread -1223874848 (LWP 22155)]
> >> 0x0019 in ~logstream (this=0xbd3d3e8) at logstream.hxx:237
> >> 237 {
> > It's hard to help for me either since I cannot preproduce ATM.
> >
> it's happened with all the jsb aircraft i've tried so far (including
> the F80 dave culp just announced). i noticed this at sfo but i just
> tried a few random airports and the same thing happens. it does not
> happen with yasim planes. again, my jsb fdm has the carrier patch
> applied.
>

IIRC a destructor can't call virtual methods, so if the interface
needs to do some kind of cleanup it can only be something pertaining
to this instance and using just the compile-time resolved calls.
I haven't looked at the code you cite above so this might be irrelevant
there, but I am a bit suspicious because of the name "FGInterface" that
hints at an abstract class.

Sorry I am overloaded with non-fgfs tasks right now --- I haven't even
pulled the last week's CVS updates and haven't reviewed them :-( ---
but maybe sharing this piece of info is better than doing nothing at all.

V.


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Re: [Flightgear-devel] Re: Sim Reset

[Mathias Fröhlich]

On Monday 19 December 2005 21:26, Alex Romosan wrote:
> > The Interface is deleted and a new one is created.
> > That is a bit crude, but it works ...
>
> it doesn't work anymore though:
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread -1223874848 (LWP 22155)]
> 0x0019 in ~logstream (this=0xbd3d3e8) at logstream.hxx:237
> 237 {
It's hard to help for me either since I cannot preproduce ATM.

Which aircraft, airport?
Commandline flags?
Your ~/.fgfs*?

   Greetings

   Mathias

-- 
Mathias Fröhlich, email: [EMAIL PROTECTED]

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RE: [Flightgear-devel] Re: Sim Reset

[Jon S. Berndt]

> 0x0019 in ~logstream (this=0xbd3d3e8) at logstream.hxx:237
> 237 {
> 
> (gdb) where
> #0  0x0019 in ~logstream (this=0xbd3d3e8) at logstream.hxx:237
> #1  0x0812a812 in ~FGFDMExec (this=0xbd3d3e8) at FGFDMExec.cpp:173
> #2  0x08113095 in ~FGJSBsim (this=0xb4b39e0) at JSBSim.cxx:308

What on earth is logstream?

Jon


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