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Learning to program in rust
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this post was submitted on 05 Jul 2025
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You mean mutex? Arc allows synchronous read only access by multiple threads, so it's not a performance bottleneck. Locking a mutex would be one.
Arcis not free, and the extra atomic operations + heap allocations can become a bottleneck.Oh, I did not know that. Well, it makes sense that it has a heap allocation, as it becomes more or less global. Though not sure why the atomic operations are needed when the value inside is immutable.
How can you otherwise keep track of an object's lifetime if copies are made concurrently?
I mean it could be Mutex, or Rwlock or anything atomic. It’s just when I have to put stuff into an Arc<> to pass around I know trouble is coming.