Hello,
Lately I’ve been investigating a thread pool related hang on arm64
which I tracked it down to some missing memory barriers. It seems that,
although the documentation doesn’t seem to imply memory fences for Interlocked
functions, the thread pool MS code assumes it does.
How should we proceed with the fix ? Get MS to follow their
documentation in reference source and explicitly use a memory barrier where
needed ? Add memory barriers explicitly on our own bcl ? Get the Interlocked
icalls to do an additional memory barrier so we leave managed code intact ?
Vlad
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