func loadTicks() uint64 {
aba := atomic.LoadUintptr(&ticksABA)
for {
barrier.Compiler()
t := ticks[aba&1]
barrier.Compiler()
aba1 := atomic.LoadUintptr(&ticksABA)
if aba == aba1 {
return t
}
aba = aba1
}
}
func (t *terminal) waittx() {
barrier.Compiler()
for t.siz.tx != 0 {
barrier.Compiler()
}
}
// Loop can be used to perform short active delay.
func Loop(n int) {
for n > 0 {
n--
barrier.Compiler()
}
}
func (t *terminal) waitrx() {
barrier.Compiler()
for t.siz.rx == 0 {
barrier.Compiler()
}
}