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node: avoid recomputing block hash in ReadBlock

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Eliminate one SHA‑256 double‑hash computation of the header per block read by reusing the hash for:
* proof‑of‑work verification;
* (optional) integrity check against the supplied hash.
This commit is contained in:
Lőrinc
2025-05-12 22:41:04 +02:00
parent 2bf173210f
commit 09ee8b7f27
2 changed files with 13 additions and 12 deletions
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2
src/node/blockstorage.h
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@@ -411,7 +411,7 @@ public:
void UnlinkPrunedFiles(const std::set<int>& setFilesToPrune) const;
/** Functions for disk access for blocks */
bool ReadBlock(CBlock& block, const FlatFilePos& pos) const;
bool ReadBlock(CBlock& block, const FlatFilePos& pos, const std::optional<uint256>& expected_hash = {}) const;
bool ReadBlock(CBlock& block, const CBlockIndex& index) const;
bool ReadRawBlock(std::vector<uint8_t>& block, const FlatFilePos& pos) const;