addrman: select addresses by network follow-up #27745
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retain the values needed to prevent redundant node lookups
Capture potential performance slow down for `Select` by network & clarify return values.
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`Assume` is safer since the checks are non-fatal- errors in these functions should provide feedback in debug builds, but do not need to deter further node operations in production.
Add a counter to ensure that the error case is bounded rather than leading to a CI timeout
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| assert(it != mapInfo.end()); | ||
| const auto info{it->second}; | ||
| if (info.GetNetwork() == *network) break; | ||
| if (Assume(it != mapInfo.end()) && it->second.GetNetwork() == *network) break; |
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I guess if the Assume assumption breaks the worst thing that could happen is that the while loop may run indefinitely - but it might also pick another address if there is one. So this seems better than crashing with an assert.
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yeah, not the best but I think the chances of repeatedly not hitting the Assume condition to be extremely low. alternatively, I could add a counter to prevent that worst case if it seems worth the additional complexity.
cd8ef5b test: ensure addrman test is finite (Amiti Uttarwar) b9f1e86 addrman: change asserts to Assumes (Amiti Uttarwar) 7687707 doc: update `Select` function description (Amiti Uttarwar) 2b6bd12 refactor: de-duplicate lookups (Amiti Uttarwar) Pull request description: this PR addresses outstanding review comments from bitcoin#27214 ACKs for top commit: achow101: ACK cd8ef5b mzumsande: Code Review ACK cd8ef5b brunoerg: crACK cd8ef5b Tree-SHA512: 669f67904263e3f51c39b175eabf5fa1b1e7b6841e889656afec33d0bd93fb446de9403f0a91b186ddeaf29498c8938484a0547b1188256c4e7c90db6f30bb55
this PR addresses outstanding review comments from #27214