Re: [boost] Boost.Threads: TSS and DLLs

From: William E. Kempf (williamkempf_at_[hidden])
Date: 2002-05-16 15:25:45

----- Original Message -----
From: "Mark Rodgers" <mark.rodgers_at_[hidden]>

> We have a problem with Boost.Threads within a DLL.  When
> exiting, our DLL (which uses TSS) is being unloaded before
> the threadmon DLL.  That means that when threadmon comes to
> call the cleanup function in our DLL, that function called
> is no more, and an access violation occurs.
>
> We've got around it by hacking threadmon.cpp to export a
> function that does the cleanup:
>
> void BOOST_THREADMON_API boost_cleanup_tss()
> {
>    exit_handlers* handlers
>          = static_cast<exit_handlers*>(TlsGetValue(key));
>    if (handlers)
>    {
>      for (exit_handlers::iterator it = handlers->begin();
>                   it != handlers->end(); ++it)
>         (*it)();
>      TlsSetValue(key,0);
>    }
> }
>
> Then we call this within our own DLLMain on DLL_PROCESS_DETACH.
>
> Any chance of making something along these lines official, or
> providing someother solution?

I'm not sure what solution should be used.  I'll have to look into this one.
Thanks for the report, though.  I'll keep you posted on what I discover.

Bill Kempf