On Thu, 24 May 2001, Joe deBlaquiere wrote: > and those pesky little inlined code snippets... > > #define PT_EI extern inline > > PT_EI long int > testandset (int *spinlock) > > which of course uses ll/sc if your world is built for _MIPS_ISA >= > _MIPS_ISA_MIPS2 The glibc's non-inlined _test_and_set() also uses ll/sc, if built for _MIPS_ISA >= _MIPS_ISA_MIPS2. We might remove the inline version of _test_and_set() for _MIPS_ISA == _MIPS_ISA_MIPS1 (I forgot about this one previously, sorry) from <sys/tas.h>, but at a cost of an additional function call. I'm not sure if that's fine performance-wise at this moment... However, when I finish my implementation of a _test_and_set() syscall, it will be perfectly fine and even necessary to remove the inline wrapper for _MIPS_ISA == _MIPS_ISA_MIPS1 -- the only reason the wrapper is needed now is the incompatibility of the arguments of sysmips() and _test_and_set(). The good news is I already started the implementation -- hopefully it'll be ready over this weekend and the never-ending discussion about sysmips(MIPS_ATOMIC_SET) will be over. Maciej -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
