Re: [PATCHES] Win32 CHECK_FOR_INTERRUPTS() performance tweak

"Tom Lane" <tgl@sss.pgh.pa.us> wrote
>
> ... so definitely worth fixing for 8.1 if we can convince ourselves
> it's correct.
>

Despite the performance, there is one thing I am not exactly sure. Shall we 
add "volatile" quanlifier to at least pg_signal_queue? The dangerous place 
is PGSemaphoreLock(). If the compiler cache this value somehow, then we are 
in trouble, but the original way (check event directly) does not have this 
problem.

Regards,
Qingqing