[openamq-dev] session->alive always 0

[Dmitri Tsyganov]

I think you may be dealing with the the build inconsistency - if you
built Open AMQ as multi-threaded library, you need to build your code
with BASE_THREADSAFE defined - that adds additional member (mutex, I
think) to each structure. Mutex member is deffed-out if you build
single-threaded version - BASE_THREADSAFE is undefined.

Hope this helps,

Dmitri

On Fri, 2007-10-26 at 13:07 +0200, Jörg Fischer wrote:
> Hi Pieter,
> 
> according to your advice I've taken a closer look into the memory around 
> the connection
> struct. I found out that if 4 bytes are added to the struct-pointer, 
> everything looks fine: alive is 1 and the properties like 
> connection->server_product don't have these leading zeros.
> 
> Then I tried to around with #pragma pack but since I'm quite new to C++, 
> the resulting effects didn't make sense to me nor solve the problem. Can 
> you give me another hint where to look? Could it be a problem with the 
> Visual Studio 2005 runtime libraries?
> 
> Thanks,
> 
> Jörg Fischer
> 
> 
> Pieter Hintjens schrieb:
> > On 10/25/07, Jörg Fischer <joerg.fischer at biologie.uni-freiburg.de> wrote:
> >
> >   
> >> 1. It is unable to detect disconnections from the server, to be precise:
> >> session->alive and connection->alive are always 0.  Sending and receiving works.
> >>     
> >
> >   
> >> 2. All connection properties I get have 4 leading bytes with value 0. Why?
> >>     
> >
> > These are presumably related, and suggest that your connection
> > reference is pointing into some random nullified space instead of the
> > real connection object.
> >
> > -Pieter
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> >   
> 
>