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fix(resolver): avoid cloning when iterating using RcVecIter #14690
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Eh2406
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Overall, a good improvement. I'm surprised it makes such a difference. Thank you for finding it.
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Update cargo 7 commits in 8c30ce53688e25f7e9d860b33cc914fb2957ca9a..cf53cc54bb593b5ec3dc2be4b1702f50c36d24d5 2024-10-15 16:43:16 +0000 to 2024-10-18 13:56:15 +0000 - feat: Stabilize MSRV-aware resolver config (rust-lang/cargo#14639) - Help with `[patch.crates.io]` (rust-lang/cargo#14700) - test: Migrate publish snapshotting to snapbox (rust-lang/cargo#14642) - Bump to 0.85.0; update changelog (rust-lang/cargo#14695) - Fix typo in faq.md (rust-lang/cargo#14696) - fix(registry): `HttpRegistry` `block_until_ready` returns early when work is still pending (rust-lang/cargo#14694) - fix(resolver): avoid cloning when iterating using RcVecIter (rust-lang/cargo#14690)
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A-dependency-resolution
Area: dependency resolution and the resolver
S-waiting-on-bors
Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
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What does this PR try to resolve?
Follow up of Eh2406/pubgrub-crates-benchmark#6 (comment).
This PR modifies the internal
RcVecIter
struct so that we can iterate on its items without cloning them. This improves performance of the resolver because eagerly cloningArc<T>
is not free.Comparison of performance using
solana-core = "=1.0.5"
inCargo.toml
:r? Eh2406