How do I go about implementing a cache that is accessed from multiple threads? My understanding is t...

# kotlin-native

[hmole]

How do I go about implementing a cache that is accessed from multiple threads? My understanding is that I need to freeze it, but then I won't be able to modify from different threads.

[olonho]

depends on data stored, for immutable data smth like https://github.com/JetBrains/kotlin-native/blob/653c7403309e9e90d117ddce01dcea9b7cce1c12/runtime/src/main/kotlin/kotlin/text/regex/AbstractCharClass.kt#L579 would do, do mutable data - similar approach, but with entries containing DetachedObjectGraph or similar structure

[spierce7]

Where can I read about DetachedObjectGraph? I didn't think doing this with mutable data was possible without using C memory

[olonho]

usual place: https://github.com/JetBrains/kotlin-native/blob/master/CONCURRENCY.md#object-subgraph-detachment

[olonho]

note that DetachedObjectGraph can be stored in an AtomicReference

[olonho]

or in frozen Array<AtomicReference<DetachedObjectGraph>>