On Fri, 1 Feb 2002, Hiroyuki Machida wrote: > > It will fail if *p is not same as oldval. > > Please note that "sc" may fail even if nobody write the > variable. (See P.211 "8.4.2 Load-Linked/Sotre-Conditional" of "See > MIPS RUN" for more detail.) > So, after your patch applied, compare_and_swap() may fail, even if > *p is equal to oldval. That's exactly what I meant -- "sc" may fail to execute the store, while "cmpxchgl" may not. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
