Do not use the redundant BestInvalidWork record in the block database.
As block index entries have a flag for marking invalid blocks, the 'best invalid work' information can be derived from there. In addition, remove the global from main.h
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parent
ede3ee3348
commit
85eb2cef33
4 changed files with 13 additions and 21 deletions
26
src/main.cpp
26
src/main.cpp
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@ -33,7 +33,7 @@ unsigned int nTransactionsUpdated = 0;
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map<uint256, CBlockIndex*> mapBlockIndex;
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CChain chainActive;
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uint256 nBestInvalidWork = 0;
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CBlockIndex *pindexBestInvalid;
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set<CBlockIndex*, CBlockIndexWorkComparator> setBlockIndexValid; // may contain all CBlockIndex*'s that have validness >=BLOCK_VALID_TRANSACTIONS, and must contain those who aren't failed
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int64 nTimeBestReceived = 0;
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int nScriptCheckThreads = 0;
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@ -1349,7 +1349,7 @@ void CheckForkWarningConditions()
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if (pindexBestForkTip && chainActive.Height() - pindexBestForkTip->nHeight >= 72)
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pindexBestForkTip = NULL;
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if (pindexBestForkTip || nBestInvalidWork > chainActive.Tip()->nChainWork + (chainActive.Tip()->GetBlockWork() * 6).getuint256())
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if (pindexBestForkTip || (pindexBestInvalid && pindexBestInvalid->nChainWork > chainActive.Tip()->nChainWork + (chainActive.Tip()->GetBlockWork() * 6).getuint256()))
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{
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if (!fLargeWorkForkFound)
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{
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@ -1416,10 +1416,13 @@ void CheckForkWarningConditionsOnNewFork(CBlockIndex* pindexNewForkTip)
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void static InvalidChainFound(CBlockIndex* pindexNew)
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{
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if (pindexNew->nChainWork > nBestInvalidWork)
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if (!pindexBestInvalid || pindexNew->nChainWork > pindexBestInvalid->nChainWork)
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{
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nBestInvalidWork = pindexNew->nChainWork;
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pblocktree->WriteBestInvalidWork(CBigNum(nBestInvalidWork));
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pindexBestInvalid = pindexNew;
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// The current code doesn't actually read the BestInvalidWork entry in
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// the block database anymore, as it is derived from the flags in block
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// index entry. We only write it for backward compatibility.
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pblocktree->WriteBestInvalidWork(CBigNum(pindexBestInvalid->nChainWork));
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uiInterface.NotifyBlocksChanged();
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}
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LogPrintf("InvalidChainFound: invalid block=%s height=%d log2_work=%.8g date=%s\n",
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@ -2769,6 +2772,8 @@ bool static LoadBlockIndexDB()
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pindex->nChainTx = (pindex->pprev ? pindex->pprev->nChainTx : 0) + pindex->nTx;
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if ((pindex->nStatus & BLOCK_VALID_MASK) >= BLOCK_VALID_TRANSACTIONS && !(pindex->nStatus & BLOCK_FAILED_MASK))
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setBlockIndexValid.insert(pindex);
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if (pindex->nStatus & BLOCK_FAILED_MASK && (!pindexBestInvalid || pindex->nChainWork > pindexBestInvalid->nChainWork))
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pindexBestInvalid = pindex;
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}
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// Load block file info
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@ -2777,11 +2782,6 @@ bool static LoadBlockIndexDB()
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if (pblocktree->ReadBlockFileInfo(nLastBlockFile, infoLastBlockFile))
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LogPrintf("LoadBlockIndexDB(): last block file info: %s\n", infoLastBlockFile.ToString().c_str());
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// Load nBestInvalidWork, OK if it doesn't exist
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CBigNum bnBestInvalidWork;
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pblocktree->ReadBestInvalidWork(bnBestInvalidWork);
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nBestInvalidWork = bnBestInvalidWork.getuint256();
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// Check whether we need to continue reindexing
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bool fReindexing = false;
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pblocktree->ReadReindexing(fReindexing);
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@ -2791,12 +2791,10 @@ bool static LoadBlockIndexDB()
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pblocktree->ReadFlag("txindex", fTxIndex);
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LogPrintf("LoadBlockIndexDB(): transaction index %s\n", fTxIndex ? "enabled" : "disabled");
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// Load hashBestChain pointer to end of best chain
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// Load pointer to end of best chain
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chainActive.SetTip(pcoinsTip->GetBestBlock());
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if (chainActive.Tip() == NULL)
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return true;
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// register best chain
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LogPrintf("LoadBlockIndexDB(): hashBestChain=%s height=%d date=%s\n",
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chainActive.Tip()->GetBlockHash().ToString().c_str(), chainActive.Height(),
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DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()).c_str());
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@ -2882,7 +2880,7 @@ void UnloadBlockIndex()
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mapBlockIndex.clear();
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setBlockIndexValid.clear();
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chainActive.SetTip(NULL);
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nBestInvalidWork = 0;
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pindexBestInvalid = NULL;
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}
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bool LoadBlockIndex()
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@ -74,7 +74,6 @@ extern CScript COINBASE_FLAGS;
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extern CCriticalSection cs_main;
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extern std::map<uint256, CBlockIndex*> mapBlockIndex;
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extern std::set<CBlockIndex*, CBlockIndexWorkComparator> setBlockIndexValid;
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extern uint256 nBestInvalidWork;
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extern unsigned int nTransactionsUpdated;
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extern uint64 nLastBlockTx;
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extern uint64 nLastBlockSize;
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@ -74,13 +74,9 @@ bool CBlockTreeDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
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return Write(make_pair('b', blockindex.GetBlockHash()), blockindex);
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}
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bool CBlockTreeDB::ReadBestInvalidWork(CBigNum& bnBestInvalidWork)
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{
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return Read('I', bnBestInvalidWork);
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}
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bool CBlockTreeDB::WriteBestInvalidWork(const CBigNum& bnBestInvalidWork)
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{
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// Obsolete; only written for backward compatibility.
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return Write('I', bnBestInvalidWork);
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}
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@ -35,7 +35,6 @@ private:
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void operator=(const CBlockTreeDB&);
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public:
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bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
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bool ReadBestInvalidWork(CBigNum& bnBestInvalidWork);
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bool WriteBestInvalidWork(const CBigNum& bnBestInvalidWork);
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bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
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bool WriteBlockFileInfo(int nFile, const CBlockFileInfo &fileinfo);
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