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Restored cached_computation description

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hsutter
2019-05-02 11:06:03 -07:00
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CppCoreGuidelines.md
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@@ -13820,6 +13820,8 @@ However, over time, code fragments can turn up in unexpected places.
return result; return result;
} }
Although `cached_computation` works perfectly in a single-threaded environment, in a multi-threaded environment the two `static` variables result in data races and thus undefined behavior.
There are several ways that this example could be made safe for a multi-threaded environment: There are several ways that this example could be made safe for a multi-threaded environment:
* Delegate concurrency concerns upwards to the caller. * Delegate concurrency concerns upwards to the caller.