Spin Lock & p_sema func ?

Hi Andy !
Can you describe me how works spin-locks when somebody take the semaphor
?
I don't see any "hold chek" in p_lock declaration (except debug
assert).
And why you don't put there (on semaphor fields) ordinary sleep-locks ?

P.S. I learn OS disign (and english too) so please be tolerant even
if i ask something obvious

Thank you !

Yoriy Sydorin
Received on Sun May 17 01:08:45 1998