On Dec 12, 2008, at 6:58 PM, John Nemeth wrote:
Do we have any kind of atomic operations in userland? I'm
working
with Asterisk 1.6.0.1 on NetBSD 5.99.3. Its configure script trys to
link this program (along with a lot of #define):
int
main ()
{
int foo1; int foo2 = __sync_fetch_and_add(&foo1, 1);
;
return 0;
}
For some reason, the corfigure script believes that it is successful;
however, linking of Asterisk fails later due to a missing symbol.
That's because in a gcc later than ours that becomes a builtin to gcc. What you want to look at is atomic_ops(3).