Aram Sargsyan 2826f885d5 Use atomics for the iterators number in isc_hashmap_t ...

Concurrent threads can access a hashmap for reading by creating and
then destroying an iterator, in which case the integer number of the
active iterators is increased or decreased from different threads,
introducing a data race. Use atomic operations to protect the variable.

2023-11-14 08:56:41 +00:00

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