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Merge bitcoin/bitcoin#32740: refactor: Header sync optimisations & simplifications

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de4242f474 refactor: Use reference for chain_start in HeadersSyncState (Daniela Brozzoni)
e37555e540 refactor: Use initializer list in CompressedHeader (Daniela Brozzoni)
0488bdfefe refactor: Remove unused parameter in ReportHeadersPresync (Daniela Brozzoni)
256246a9fa refactor: Remove redundant parameter from CheckHeadersPoW (Daniela Brozzoni)
ca0243e3a6 refactor: Remove useless CBlock::GetBlockHeader (Pieter Wuille)
4568652222 refactor: Use std::span in HasValidProofOfWork (Daniela Brozzoni)
4066bfe561 refactor: Compute work from headers without CBlockIndex (Daniela Brozzoni)
0bf6139e19 p2p: Avoid an IsAncestorOfBestHeaderOrTip call (Pieter Wuille)

Pull request description:

  This is a partial* revival of #25968

  It contains a list of most-unrelated simplifications and optimizations to the code merged in #25717:

  - Avoid an IsAncestorOfBestHeaderOrTip call: Just don't call this function when it won't have any effect.
  - Compute work from headers without CBlockIndex: Avoid the need to construct a CBlockIndex object just to compute work for a header, when its nBits value suffices for that. Also use some Spans where possible.
  - Remove useless CBlock::GetBlockHeader: There is no need for a function to convert a CBlock to a CBlockHeader, as it's a child class of it.

  It also contains the following code cleanups, which were suggested by reviewers in #25968:
  - Remove redundant parameter from CheckHeadersPoW: No need to pass consensusParams, as CheckHeadersPow already has access to m_chainparams.GetConsensus()
  - Remove unused parameter in ReportHeadersPresync
  - Use initializer list in CompressedHeader, also make GetFullHeader const
  - Use reference for chain_start in HeadersSyncState: chain_start can never be null, so it's better to pass it as a reference rather than a raw pointer

  *I decided to leave out three commits that were in #25968 (4e7ac7b94d, ab52fb4e95, 7f1cf440ca), since they're a bit more involved, and I'm a new contributor. If this PR gets merged, I'll comment under #25968 to note that these three commits are still up for grabs :)

ACKs for top commit:
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  polespinasa:
    re-ACK de4242f474
  sipa:
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  achow101:
    ACK de4242f474
  hodlinator:
    re-ACK de4242f474

Tree-SHA512: 1de4f3ce0854a196712505f2b52ccb985856f5133769552bf37375225ea8664a3a7a6a9578c4fd461e935cd94a7cbbb08f15751a1da7651f8962c866146d9d4b
This commit is contained in:
Ava Chow
2026-01-14 11:38:07 -08:00
parent c0219f6bea de4242f474
commit b0b65336e7
15 changed files with 78 additions and 82 deletions
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2
src/test/validation_block_tests.cpp
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@@ -105,7 +105,7 @@ std::shared_ptr<CBlock> MinerTestingSetup::FinalizeBlock(std::shared_ptr<CBlock>
// submit block header, so that miner can get the block height from the
// global state and the node has the topology of the chain
BlockValidationState ignored;
BOOST_CHECK(Assert(m_node.chainman)->ProcessNewBlockHeaders({{pblock->GetBlockHeader()}}, true, ignored));
BOOST_CHECK(Assert(m_node.chainman)->ProcessNewBlockHeaders({{*pblock}}, true, ignored));
return pblock;
}