On Tue, Jan 31, 2017 at 4:03 PM, Paul Sandoz <paul.san...@oracle.com> wrote:
>
>> ConcurrentSkipListSet
>> —
>>
>> 76 * <p>Bulk operations that add, remove, or examine multiple elements,
>> 77 * such as {@link #addAll}, {@link #removeIf} or {@link #forEach},
>> 78 * are <em>not</em> guaranteed to be performed atomically.
>> 79 * For example, a {@code forEach} traversal concurrent with an {@code
>> 80 * addAll} operation might observe only some of the added elements.
>>
>> toArray was removed, and it’s not atomic. Same for many other cases.
>>
>
> We tried to maintain complete lists of non-atomic operations, but those
> became stale as new methods got added to superclasses/superintterfaces.
> Even toString is non-atomic! Give up or be pedantically exhaustive?
>
>
> The removal “toArray” is arguably a specification change, and it’s removal
> could be misconstrued as implying it is now atomic. So i would just leave
> the existing documentation as is.
>
But ... the problem is that the docs implied that all the other operations
*were* guaranteed atomic, which became untrue when y'all added forEach and
friends. That is, this is supposed to be a doc bug fix. And toString was
always missing from the list.
* Additionally, the bulk operations {@code addAll},
* {@code removeAll}, {@code retainAll}, {@code containsAll},
* {@code equals}, and {@code toArray} are <em>not</em> guaranteed
* to be performed atomically. For example, an iterator operating
