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Dont create pcoinsTip until after ReplayBlocks.

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This requires that we not access pcoinsTip in InitBlockIndex's
FlushStateToDisk (so we just skip it until later in AppInitMain)
and the LoadChainTip in LoadBlockIndex (which there is already one
later in AppinitMain, after ReplayBlocks, so skipping it there is
fine).

Includes some simplifications by Suhas Daftuar and Pieter Wuille.
This commit is contained in:
Matt Corallo 2017-04-17 11:41:10 -04:00 committed by Pieter Wuille
parent eaca1b7b08
commit d6af06d68a
3 changed files with 2 additions and 12 deletions
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3
src/init.cpp
View file

@ -1385,7 +1385,6 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
pblocktree = new CBlockTreeDB(nBlockTreeDBCache, false, fReindex);
pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex || fReindexChainState);
pcoinscatcher = new CCoinsViewErrorCatcher(pcoinsdbview);
pcoinsTip = new CCoinsViewCache(pcoinscatcher);
if (fReindex) {
pblocktree->WriteReindexing(true);
@ -1433,7 +1432,7 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
strLoadError = _("Unable to replay blocks. You will need to rebuild the database using -reindex-chainstate.");
break;
}
pcoinsTip->SetBestBlock(pcoinsdbview->GetBestBlock()); // TODO: only initialize pcoinsTip after ReplayBlocks
pcoinsTip = new CCoinsViewCache(pcoinscatcher);
LoadChainTip(chainparams);
if (!fReindex && chainActive.Tip() != NULL) {

8
src/txdb.cpp
View file

@ -85,6 +85,7 @@ bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
size_t changed = 0;
size_t batch_size = (size_t)GetArg("-dbbatchsize", nDefaultDbBatchSize);
int crash_simulate = GetArg("-dbcrashratio", 0);
assert(!hashBlock.IsNull());
uint256 old_tip = GetBestBlock();
if (old_tip.IsNull()) {
@ -96,13 +97,6 @@ bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
}
}
if (hashBlock.IsNull()) {
// Initial flush, nothing to write.
assert(mapCoins.empty());
assert(old_tip.IsNull());
return true;
}
// In the first batch, mark the database as being in the middle of a
// transition from old_tip to hashBlock.
// A vector is used for future extensibility, as we may want to support

3
src/validation.cpp
View file

@ -3420,7 +3420,6 @@ bool static LoadBlockIndexDB(const CChainParams& chainparams)
pblocktree->ReadFlag("txindex", fTxIndex);
LogPrintf("%s: transaction index %s\n", __func__, fTxIndex ? "enabled" : "disabled");
LoadChainTip(chainparams);
return true;
}
@ -3783,8 +3782,6 @@ bool InitBlockIndex(const CChainParams& chainparams)
CBlockIndex *pindex = AddToBlockIndex(block);
if (!ReceivedBlockTransactions(block, state, pindex, blockPos, chainparams.GetConsensus()))
return error("LoadBlockIndex(): genesis block not accepted");
// Force a chainstate write so that when we VerifyDB in a moment, it doesn't check stale data
return FlushStateToDisk(chainparams, state, FLUSH_STATE_ALWAYS);
} catch (const std::runtime_error& e) {
return error("LoadBlockIndex(): failed to initialize block database: %s", e.what());
}