gc with cyclic collector? #4668

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1. youknowone

   added

   C-discussionA discussionA discussion

   on Mar 8, 2023
2. youknowone

   changed the title [-]gc with samsara?[/-] [+]gc with cyclic collector?[/+] on Mar 8, 2023
3. darleybarreto commented on Jan 13, 2025

   

   darleybarreto

   on Jan 13, 2025

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   Recently I've found this one called dumpster. Gc type behaves similar to Rc, but the GC can work concurrently if one chooses. What do you think? Would a massive rewrite be needed?

   👍React with 👍1Reacted by Jeong, YunWon
4. youknowone commented on Jan 28, 2025

   

   youknowone

   on Jan 28, 2025

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   I didn't compare the candidates yet.
   Anyone that doesn't hurt basic RC performance that much will be the best.
5. arihant2math commented on Jan 28, 2025

   

   arihant2math

   on Jan 28, 2025

   Last edited by arihant2math

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   We unfortunately cannot use https://github.com/artichoke/cactusref, as it is nightly only.
   Samsara seems like a great fit from the looks of it.
   bacon_rajan_cc is stop-the-world only, which is a downside.
   I'm personally leaning towards testing both samsara and dumpster.

   👍React with 👍1Reacted by Jeong, YunWon
6. youknowone commented on Oct 6, 2026

   

   youknowone

   on Oct 6, 2026

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   The VM has a cyclic collector (crates/vm/src/gc_state.rs). A two-object reference cycle is collected by gc.collect() on current main.

   Closing.

   — commented by Grok 4.6
7. youknowone

   closed this as completedon Oct 6, 2026