Re: Using TLSAlloc to read data into a DLL

From:

"Igor Tandetnik" <itandetnik@mvps.org>

Newsgroups:

microsoft.public.vc.language

Date:

Mon, 31 Dec 2007 13:34:47 -0500

Message-ID:

<OZiZTv9SIHA.4768@TK2MSFTNGP02.phx.gbl>

"Sanjay" <sanjay.gangadhara@gmail.com> wrote in message
news:bfccc6af-46c2-4091-907e-29e5b7485908@z11g2000hsf.googlegroups.com

I am very new to Windows programming, and wanted to learn more about
the use of the function TlsAlloc. My specific application is that I
would like to read data into a file when the DLL is first loaded, and
store that data in a memory block that is untouched until the DLL is
unloaded. For my particular problem, use of the STATIC keyword is
insufficient.

What precisely do you feel is wrong with it? It looks like you can
simply allocate a block of memory in DllMain(DLL_PROCESS_ATTACH) and
save it in a global variable. Then free it in
DllMain(DLL_PROCESS_DETACH).

TLS stands for thread-local storage, and is used to store per-thread
data (where each thread needs a separate copy of the data, for whatever
reason). From your description, you don't appear to need TLS.
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925