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Serious SocketService/SocketPort problems


From: Prochnow, Christian
Subject: Serious SocketService/SocketPort problems
Date: Thu, 21 Nov 2002 11:35:59 +0100
User-agent: KMail/1.4.3

Hi List,

here comes a really serious problem related to SocketService and SocketPort:

SocketPort() takes a SocketService argument, when SocketPort is created, it 
attaches itself to the given SocketService. Which seems to lead to 
synchronisation problems. 
I have a class (say MySocketPort) that is inherited from SocketPort (with 
outbound constructor). So when i create the MySocketPort object in the 
main-thread the SocketPort() base constructor registers itself with the 
SocketService which is then started by SocketService::attach().

So when the SocketService-thread begins to run and immediatly tries to 
dispatch a virtual call to MySocketPort - it will be dispatched to the 
default implementation (SocketPort::connect()) cause the vtable of 
MySocketPort is'nt fully setup.

This seems to be timing-related, cause under Linux this works fine - under 
Windows XP it crashes (i think new started threads in XP are immediatly 
executed and the creator-thread gets yield).
 
I have no idea how to solve this. Only solution would be that SocketPort() 
does not attach itself when constructing ... instead MySocketPort should 
attach itself to the SocketService. 

Thanks in advance,
Christian

-- 
Christian Prochnow
Berliner Freiverkehr (Aktien) AG - Kurf├╝rstendamm 117 - 10711 Berlin, Germany
Fon: +49-30-89606409, Fax: +49-30-89021389 - EMail: address@hidden





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