On 03/04/2013 10:07 AM, Michael Van Canneyt wrote:
We use pthreads on non-windows, and GetTLS/SetTLS on Windows.
Thus the situation is as it was when we discussed this some years ago: a
library call with each access to a threadvar, making fpc a lot slower
that the C compiler (Microsoft and GNU, no idea about other brands) on
that behalf (that might nob be very relevant in real life) .
(BTW: a similar discussion arises with any thread-synchronization
primitive AFAIK here dynamic library calls are done while an
arch-depending Futex/Mutex implementation directly in the RTL _could_ be
done. But here, a C user (Linux) would do the same library call to
pthreadlib "mutex...()" which does "Futex"if available in that arch, and
"Mutex" if not. )
-Michael
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