On Wed, Apr 29, 2015 at 3:56 PM, Fu ji wrote:

Thank you for reply,

I forget to say that solutionB and solutionC is also dll, so I decided to merge solutionA and SolutionC. Right now I have SolutionB and SolutionC (here is tls) both are dll. The same situation:

SolutionB I set tls (TLS.reset(uVariable)) - uVariable is integer 2 Call function from SolutionC and call TLS.get() but there is different value than 2. But when i return from function to SolutionB and call TLS.get there is everything ok (return 2).

But still no effect, where I made a mistake ?

Is the TLS variable defined in a header which is included in both SolutionB and C?

On Wed, Apr 29, 2015 at 4:13 PM, Fu ji wrote:

Tls is in header in SolutionC.

If that header is #included in SolutionB somewhere and TLS is defined in that header (e.g. with the static keyword, like in your initial post) then that variable is again duplicated in both solutions.

On Thursday 30 April 2015 11:05:05 Fu ji wrote:

Thank you for help Andrey but it's still not working.

Right now I sipmlify it to minimum, in SolutionC (dll) in Include (tls.h) I have:

extern __declspec(dllexport) boost::thread_specific_ptr<int> ThreadLocalStorage;

in the same soltuion but in Src i have tls.cpp with:

__declspec(dllexport) boost::thread_specific_ptr<int> ThreadLocalStorage;

and this is ok, compile with any problems.

SolutionB(dll) in file.pp I have:

__declspec(dllimport) boost::thread_specific_ptr<int> ThreadLocalStorage;

and right now I have a different issue, after compile, run I try to change value of tls in SolutionB in reset funtion I have assertion. Maybe you have some idea why ?

No. What kind of assertion?

Ok, I already now how weird tree I have in project. First there is run service.exe which load dispather.dll. Here I use function from mainlibrary.dll (there is reference mainlibrary in dispatcher properties). Now from mainlibrary (where is declaration of tls) I load module.dll, in this module I all function from dispather and reset tls with value = 2, back to module and try to get value from tls, but it looks like tls is not initialized with any value. There is a difference beetwen boost tls and tls from win api in this case ?

I went back to problem, in header I have: extern __declspec(dllexport) boost::thread_specific_ptr<int> Storage; extern __declspec(dllexport) int tls_value_storage = 10; //for test In Src I have: extern __declspec(dllexport) boost::thread_specific_ptr<int> Storage; // Error extern __declspec(dllexport) int tls_value_storage; but here I have error in compiling process, there is ok if there is only declaration without extern (in other case I have error LNK1120: 1 unresolved externalsl). In other project I have: extern __declspec(dllimport) boost::thread_specific_ptr<int> TlxStorage; extern __declspec(dllimport) int tls_value_storage; and it's ok. Integer tls_value_storage is only for testing purpose, it work fine (I can see variable in other project). Thanks in advance.

On Wed, May 6, 2015 at 11:25 AM, Fu ji wrote:

...

Do you link to Boost.Thread built as a shared library (dll)? Both libraries must use Boost.Thread dll because it maintains a global list of thread_specific_ptr storage objects internally.

This could be a problem, in both solutions I have in Properties:

Additional Include Directories: ..\3rdParty\Common\include\boost (here I have .hpp files)

and in Linker: Additional Library Directories: ..\3rdParty\$(Platform)\VC12\lib and here I have libboost_thread-vc120-mt-1_57.lib

I don't use Windows but AFAIR the library name should be something like boost_thread-vc120-mt-1_57.lib (note no leading 'lib') and a similarly named dll. If you don't have these you will have to rebuild boost. Make sure you add 'link=shared' to b2 command line.

May I do this in some other way ? I read that I can achieve that by define: #define BOOST_ALL_DYN_LINK in pre-compiled header stdafx.h

Yes, BOOST_ALL_DYN_LINK must be defined when you build both your libraries.