sec/core/lib/gprpp/atomic.h

[Saroj Mahapatra]

Hi,

Why does comoare_exchange_week call gpr_atm_inc_cas_then before calling the std function?

Thank you.

[Vijay Pai]

Those macros are performance-tracking counters used in microbenchmarks. We count our use of atomic operations, locks, and mallocs since these are all (relatively) expensive operations and often foreshadow performance regressions (or improvements). The results of these can be seen on the Checks section of any PR on our Github repo (though they are only shown if there's a significant change).

[Ctmahapa95]

Thanks for confirming my guess. It is completely justified but if I use those classes in non-gRPC code the metrics will be wrong.

The code is really nice and hence I was exploring the possibility of using them outside.

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