[boost] Re: the boost::signal sample crashes

From: Russell Hind (rhind_at_[hidden])
Date: 2003-08-04 01:57:20

E. Gladyshev wrote:
>>Have you built the signals library multi-threaded or
>>single threaded and 
> 
> 
> Whatever the default build is. 

Single threaded.

> 
> 
> The application is set to use multi-thread run-time
> libraries and MFC.DLL.
> 
> 
>>Not seen this specific one, the most common problem
>>I saw was a hang so 
>>it may well not be your problem, but worth looking
>>into.
> 

It may well be the problem.  I didn't see crashes, just hangs.  You have 
objects created inside the signals lib (non-multi-threaded) so it 
doesn't create/initialise the lock member variables.  There is then 
header code which is compiled directly in your application 
(multi-threaded even though you only use 1 thread) and so it tries to 
access these non-existent locks in the objects created in single 
threaded signals lib.

If you are going to use a multi-threaded application/run-time, you must 
build/link the multi-threaded version of the boost libs also.

Because of the crash, you may still have another problem, but I would 
solve this one first, then look for the next.  I saw the hangs under 
Borland C++ Builder, the bug may present itself in a different way under 
VC++.

Thanks

Russell