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net: Serve blocks directly from disk when possible

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In `ProcessGetBlockData`, send the block data directly from disk if
type MSG_WITNESS_BLOCK is requested. This is a valid shortcut as the
on-disk format matches the network format.

This is expected to increase performance because a deserialization and
subsequent serialization roundtrip is avoided.
This commit is contained in:
Wladimir J. van der Laan
2018-05-02 14:10:27 +02:00
parent 598db389c3
commit 0bf431870e
3 changed files with 107 additions and 47 deletions
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2
src/validation.h
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@ -398,6 +398,8 @@ void InitScriptExecutionCache();
/** Functions for disk access for blocks */
bool ReadBlockFromDisk(CBlock& block, const CDiskBlockPos& pos, const Consensus::Params& consensusParams);
bool ReadBlockFromDisk(CBlock& block, const CBlockIndex* pindex, const Consensus::Params& consensusParams);
bool ReadRawBlockFromDisk(std::vector<uint8_t>& block, const CDiskBlockPos& pos, const CMessageHeader::MessageStartChars& message_start);
bool ReadRawBlockFromDisk(std::vector<uint8_t>& block, const CBlockIndex* pindex, const CMessageHeader::MessageStartChars& message_start);
/** Functions for validating blocks and updating the block tree */