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Move block writing out of AcceptBlock

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This commit is contained in:
Matt Corallo 2017-04-25 21:35:02 -04:00
parent 50701ba5fc
commit e104f0fb7e
1 changed files with 29 additions and 20 deletions
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49
src/validation.cpp
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@ -2759,7 +2759,7 @@ static bool ReceivedBlockTransactions(const CBlock &block, CValidationState& sta
return true;
}
static bool FindBlockPos(CValidationState &state, CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeight, uint64_t nTime, bool fKnown = false)
static bool FindBlockPos(CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeight, uint64_t nTime, bool fKnown = false)
{
LOCK(cs_LastBlockFile);
@ -2808,7 +2808,7 @@ static bool FindBlockPos(CValidationState &state, CDiskBlockPos &pos, unsigned i
}
}
else
return state.Error("out of disk space");
return error("out of disk space");
}
}
@ -3196,6 +3196,25 @@ bool ProcessNewBlockHeaders(const std::vector<CBlockHeader>& headers, CValidatio
return true;
}
/** Store block on disk. If dbp is non-nullptr, the file is known to already reside on disk */
static CDiskBlockPos SaveBlockToDisk(const CBlock& block, int nHeight, const CChainParams& chainparams, const CDiskBlockPos* dbp) {
unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
CDiskBlockPos blockPos;
if (dbp != nullptr)
blockPos = *dbp;
if (!FindBlockPos(blockPos, nBlockSize+8, nHeight, block.GetBlockTime(), dbp != nullptr)) {
error("%s: FindBlockPos failed", __func__);
return CDiskBlockPos();
}
if (dbp == nullptr) {
if (!WriteBlockToDisk(block, blockPos, chainparams.MessageStart())) {
AbortNode("Failed to write block");
return CDiskBlockPos();
}
}
return blockPos;
}
/** Store block on disk. If dbp is non-nullptr, the file is known to already reside on disk */
static bool AcceptBlock(const std::shared_ptr<const CBlock>& pblock, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex, bool fRequested, const CDiskBlockPos* dbp, bool* fNewBlock)
{
@ -3257,19 +3276,13 @@ static bool AcceptBlock(const std::shared_ptr<const CBlock>& pblock, CValidation
if (!IsInitialBlockDownload() && chainActive.Tip() == pindex->pprev)
GetMainSignals().NewPoWValidBlock(pindex, pblock);
int nHeight = pindex->nHeight;
// Write block to history file
try {
unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
CDiskBlockPos blockPos;
if (dbp != nullptr)
blockPos = *dbp;
if (!FindBlockPos(state, blockPos, nBlockSize+8, nHeight, block.GetBlockTime(), dbp != nullptr))
return error("AcceptBlock(): FindBlockPos failed");
if (dbp == nullptr)
if (!WriteBlockToDisk(block, blockPos, chainparams.MessageStart()))
AbortNode(state, "Failed to write block");
CDiskBlockPos blockPos = SaveBlockToDisk(block, pindex->nHeight, chainparams, dbp);
if (blockPos.IsNull()) {
state.Error(strprintf("%s: Failed to find position to write new block to disk", __func__));
return false;
}
if (!ReceivedBlockTransactions(block, state, pindex, blockPos, chainparams.GetConsensus()))
return error("AcceptBlock(): ReceivedBlockTransactions failed");
} catch (const std::runtime_error& e) {
@ -4037,15 +4050,11 @@ bool LoadGenesisBlock(const CChainParams& chainparams)
try {
CBlock &block = const_cast<CBlock&>(chainparams.GenesisBlock());
// Start new block file
unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
CDiskBlockPos blockPos;
CValidationState state;
if (!FindBlockPos(state, blockPos, nBlockSize+8, 0, block.GetBlockTime()))
return error("%s: FindBlockPos failed", __func__);
if (!WriteBlockToDisk(block, blockPos, chainparams.MessageStart()))
CDiskBlockPos blockPos = SaveBlockToDisk(block, 0, chainparams, nullptr);
if (blockPos.IsNull())
return error("%s: writing genesis block to disk failed", __func__);
CBlockIndex *pindex = AddToBlockIndex(block);
CValidationState state;
if (!ReceivedBlockTransactions(block, state, pindex, blockPos, chainparams.GetConsensus()))
return error("%s: genesis block not accepted", __func__);
} catch (const std::runtime_error& e) {