[fpc-devel] Comparison FPC 2.6.2 - Delphi 7

[Michael Schnell]

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