"_beginthreadex()" vs. "CreateThread()"

**Petike** · 08-07-2008

Hi,
I would like to build some multi-threaded application but I have read on other pages, that there are two "rival" functions for creating a thread: "_beginthreadex()" and "CreateThread()".
I am confused now because I don't know which one is better to use.
Somewhere I have read that "CreateThread()" function is more low-level (so maybe it could be faster on Windows systems). But on other hand, using the second one "_beginthreadex()" is more safer (it prevents memory data from loosing).

SO THE QUESTION IS:
It is GOOD (or the best) to use only the "_beginthreadex()" function EVERYWHERE?

Thanks.

Petike

**matsp** · 08-07-2008

If you are ever going to call C library functions from your thread, you should use _beginthread(), as that sets up some per-thread data that is needed by the C library function. As far as I can tell, there would be little or no benefit from using CreateThread, unless you have a very good technical reason why _beginthread() won't work.

--
Mats

**Codeplug** · 08-07-2008

There's no speed difference. _beginthreadex() simply does a little book-keeping and calls CreateThread().

Just use _beginthreadex(). If you really want to understand the potential memory leak when not calling _beginthreadex() - http://cboard.cprogramming.com/showp...79&postcount=4

gg

**Petike** · 08-07-2008

OK,
thank you both very much for answers.

Petike

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