I'm struggling to understand the following lines of code from
clojure.lang.LockingTransaction.run:
if (ref.tvals == null) {
ref.tvals = new Ref.TVal(e.getValue(),
commitPoint, msecs);
} else if (ref.faults.get() > 0) {
ref.tvals = new Ref.TVal(e.getValue(),
commitPoint, msecs, ref.tvals);
ref.faults.set(0);
} else {
ref.tvals = ref.tvals.next;
ref.tvals.val = e.getValue();
ref.tvals.point = commitPoint;
ref.tvals.msecs = msecs;
}
I don't understand the motivation for ref.faults and the difference
between the second and third cases.
Also Ref.trimHistory() appears to be unused -- when is it safe to call
it?
Thanks for any tips.
Tom
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