18 Aug
2003
18 Aug
'03
6:55 p.m.
On Sun, Aug 17, 2003 at 12:56:09PM -0500, Jack O'Quin wrote:
I am looking for a good set of portable, supported atomic.h-style
primitives for userspace applications. I am not especially interested
in the low-level functions defined in <asm/atomic.h>. I really want
something more powerful like the kernel's compare_and_swap(),
cmpxchg(), test_and_set(), atomic_inc_and_return(), or fetch_and_add()
These are intrinsically platform specific.
(*) glibc seems to have a good set of functions
internally
AFAICT, these are for the library's own use, not part of the
supported external interface. I'll investigate further.
It sure would be nice if glibc exposed an atomic API. I dunno how much you
can do as a user, though. Can non-privileged tasks run LOCKed instructions
on x86? How about other architectures?
--
Notice that as computers are becoming easier and easier to use,
suddenly there's a big market for "Dummies" books. Cause and effect,
or merely an ironic juxtaposition of unrelated facts?