diff options
Diffstat (limited to 'src/main.cpp')
| -rw-r--r-- | src/main.cpp | 125 |
1 files changed, 73 insertions, 52 deletions
diff --git a/src/main.cpp b/src/main.cpp index 79ee4e55ec..d3956fafda 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -57,7 +57,7 @@ bool fPruneMode = false; bool fIsBareMultisigStd = true; bool fCheckBlockIndex = false; bool fCheckpointsEnabled = true; -unsigned int nCoinCacheSize = 5000; +size_t nCoinCacheUsage = 5000 * 300; uint64_t nPruneTarget = 0; /** Fees smaller than this (in satoshi) are considered zero fee (for relaying and mining) */ @@ -75,10 +75,9 @@ void EraseOrphansFor(NodeId peer); /** * Returns true if there are nRequired or more blocks of minVersion or above - * in the last Params().ToCheckBlockUpgradeMajority() blocks, starting at pstart - * and going backwards. + * in the last Consensus::Params::nMajorityWindow blocks, starting at pstart and going backwards. */ -static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned int nRequired); +static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned nRequired, const Consensus::Params& consensusParams); static void CheckBlockIndex(); /** Constant stuff for coinbase transactions we create: */ @@ -1189,19 +1188,17 @@ bool ReadBlockFromDisk(CBlock& block, const CBlockIndex* pindex) return true; } -CAmount GetBlockValue(int nHeight, const CAmount& nFees) +CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams) { - CAmount nSubsidy = 50 * COIN; - int halvings = nHeight / Params().SubsidyHalvingInterval(); - + int halvings = nHeight / consensusParams.nSubsidyHalvingInterval; // Force block reward to zero when right shift is undefined. if (halvings >= 64) - return nFees; + return 0; + CAmount nSubsidy = 50 * COIN; // Subsidy is cut in half every 210,000 blocks which will occur approximately every 4 years. nSubsidy >>= halvings; - - return nSubsidy + nFees; + return nSubsidy; } bool IsInitialBlockDownload() @@ -1747,7 +1744,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin unsigned int flags = fStrictPayToScriptHash ? SCRIPT_VERIFY_P2SH : SCRIPT_VERIFY_NONE; // Start enforcing the DERSIG (BIP66) rules, for block.nVersion=3 blocks, when 75% of the network has upgraded: - if (block.nVersion >= 3 && IsSuperMajority(3, pindex->pprev, Params().EnforceBlockUpgradeMajority())) { + if (block.nVersion >= 3 && IsSuperMajority(3, pindex->pprev, chainparams.GetConsensus().nMajorityEnforceBlockUpgrade, chainparams.GetConsensus())) { flags |= SCRIPT_VERIFY_DERSIG; } @@ -1810,10 +1807,11 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin int64_t nTime1 = GetTimeMicros(); nTimeConnect += nTime1 - nTimeStart; LogPrint("bench", " - Connect %u transactions: %.2fms (%.3fms/tx, %.3fms/txin) [%.2fs]\n", (unsigned)block.vtx.size(), 0.001 * (nTime1 - nTimeStart), 0.001 * (nTime1 - nTimeStart) / block.vtx.size(), nInputs <= 1 ? 0 : 0.001 * (nTime1 - nTimeStart) / (nInputs-1), nTimeConnect * 0.000001); - if (block.vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees)) + CAmount blockReward = nFees + GetBlockSubsidy(pindex->nHeight, chainparams.GetConsensus()); + if (block.vtx[0].GetValueOut() > blockReward) return state.DoS(100, error("ConnectBlock(): coinbase pays too much (actual=%d vs limit=%d)", - block.vtx[0].GetValueOut(), GetBlockValue(pindex->nHeight, nFees)), + block.vtx[0].GetValueOut(), blockReward), REJECT_INVALID, "bad-cb-amount"); if (!control.Wait()) @@ -1880,11 +1878,14 @@ enum FlushStateMode { bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode) { LOCK2(cs_main, cs_LastBlockFile); static int64_t nLastWrite = 0; + static int64_t nLastFlush = 0; + static int64_t nLastSetChain = 0; std::set<int> setFilesToPrune; bool fFlushForPrune = false; try { if (fPruneMode && fCheckForPruning) { FindFilesToPrune(setFilesToPrune); + fCheckForPruning = false; if (!setFilesToPrune.empty()) { fFlushForPrune = true; if (!fHavePruned) { @@ -1893,16 +1894,32 @@ bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode) { } } } - if ((mode == FLUSH_STATE_ALWAYS) || - ((mode == FLUSH_STATE_PERIODIC || mode == FLUSH_STATE_IF_NEEDED) && pcoinsTip->GetCacheSize() > nCoinCacheSize) || - (mode == FLUSH_STATE_PERIODIC && GetTimeMicros() > nLastWrite + DATABASE_WRITE_INTERVAL * 1000000) || - fFlushForPrune) { - // Typical CCoins structures on disk are around 100 bytes in size. - // Pushing a new one to the database can cause it to be written - // twice (once in the log, and once in the tables). This is already - // an overestimation, as most will delete an existing entry or - // overwrite one. Still, use a conservative safety factor of 2. - if (!CheckDiskSpace(100 * 2 * 2 * pcoinsTip->GetCacheSize())) + int64_t nNow = GetTimeMicros(); + // Avoid writing/flushing immediately after startup. + if (nLastWrite == 0) { + nLastWrite = nNow; + } + if (nLastFlush == 0) { + nLastFlush = nNow; + } + if (nLastSetChain == 0) { + nLastSetChain = nNow; + } + size_t cacheSize = pcoinsTip->DynamicMemoryUsage(); + // The cache is large and close to the limit, but we have time now (not in the middle of a block processing). + bool fCacheLarge = mode == FLUSH_STATE_PERIODIC && cacheSize * (10.0/9) > nCoinCacheUsage; + // The cache is over the limit, we have to write now. + bool fCacheCritical = mode == FLUSH_STATE_IF_NEEDED && cacheSize > nCoinCacheUsage; + // It's been a while since we wrote the block index to disk. Do this frequently, so we don't need to redownload after a crash. + bool fPeriodicWrite = mode == FLUSH_STATE_PERIODIC && nNow > nLastWrite + (int64_t)DATABASE_WRITE_INTERVAL * 1000000; + // It's been very long since we flushed the cache. Do this infrequently, to optimize cache usage. + bool fPeriodicFlush = mode == FLUSH_STATE_PERIODIC && nNow > nLastFlush + (int64_t)DATABASE_FLUSH_INTERVAL * 1000000; + // Combine all conditions that result in a full cache flush. + bool fDoFullFlush = (mode == FLUSH_STATE_ALWAYS) || fCacheLarge || fCacheCritical || fPeriodicFlush || fFlushForPrune; + // Write blocks and block index to disk. + if (fDoFullFlush || fPeriodicWrite) { + // Depend on nMinDiskSpace to ensure we can write block index + if (!CheckDiskSpace(0)) return state.Error("out of disk space"); // First make sure all block and undo data is flushed to disk. FlushBlockFile(); @@ -1924,21 +1941,29 @@ bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode) { return state.Abort("Files to write to block index database"); } } + // Finally remove any pruned files + if (fFlushForPrune) + UnlinkPrunedFiles(setFilesToPrune); + nLastWrite = nNow; + } + // Flush best chain related state. This can only be done if the blocks / block index write was also done. + if (fDoFullFlush) { + // Typical CCoins structures on disk are around 128 bytes in size. + // Pushing a new one to the database can cause it to be written + // twice (once in the log, and once in the tables). This is already + // an overestimation, as most will delete an existing entry or + // overwrite one. Still, use a conservative safety factor of 2. + if (!CheckDiskSpace(128 * 2 * 2 * pcoinsTip->GetCacheSize())) + return state.Error("out of disk space"); // Flush the chainstate (which may refer to block index entries). if (!pcoinsTip->Flush()) return state.Abort("Failed to write to coin database"); - - // Finally remove any pruned files - if (fFlushForPrune) { - UnlinkPrunedFiles(setFilesToPrune); - fCheckForPruning = false; - } - + nLastFlush = nNow; + } + if ((mode == FLUSH_STATE_ALWAYS || mode == FLUSH_STATE_PERIODIC) && nNow > nLastSetChain + (int64_t)DATABASE_WRITE_INTERVAL * 1000000) { // Update best block in wallet (so we can detect restored wallets). - if (mode != FLUSH_STATE_IF_NEEDED) { - GetMainSignals().SetBestChain(chainActive.GetLocator()); - } - nLastWrite = GetTimeMicros(); + GetMainSignals().SetBestChain(chainActive.GetLocator()); + nLastSetChain = nNow; } } catch (const std::runtime_error& e) { return state.Abort(std::string("System error while flushing: ") + e.what()); @@ -1966,10 +1991,10 @@ void static UpdateTip(CBlockIndex *pindexNew) { nTimeBestReceived = GetTime(); mempool.AddTransactionsUpdated(1); - LogPrintf("%s: new best=%s height=%d log2_work=%.8g tx=%lu date=%s progress=%f cache=%u\n", __func__, + LogPrintf("%s: new best=%s height=%d log2_work=%.8g tx=%lu date=%s progress=%f cache=%.1fMiB(%utx)\n", __func__, chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(), log(chainActive.Tip()->nChainWork.getdouble())/log(2.0), (unsigned long)chainActive.Tip()->nChainTx, DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()), - Checkpoints::GuessVerificationProgress(chainParams.Checkpoints(), chainActive.Tip()), (unsigned int)pcoinsTip->GetCacheSize()); + Checkpoints::GuessVerificationProgress(chainParams.Checkpoints(), chainActive.Tip()), pcoinsTip->DynamicMemoryUsage() * (1.0 / (1<<20)), pcoinsTip->GetCacheSize()); cvBlockChange.notify_all(); @@ -2644,18 +2669,14 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta } // Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded: - if (block.nVersion < 2 && IsSuperMajority(2, pindexPrev, consensusParams.nMajorityRejectBlockOutdated)) - { + if (block.nVersion < 2 && IsSuperMajority(2, pindexPrev, consensusParams.nMajorityRejectBlockOutdated, consensusParams)) return state.Invalid(error("%s: rejected nVersion=1 block", __func__), REJECT_OBSOLETE, "bad-version"); - } // Reject block.nVersion=2 blocks when 95% (75% on testnet) of the network has upgraded: - if (block.nVersion < 3 && IsSuperMajority(3, pindexPrev, consensusParams.nMajorityRejectBlockOutdated)) - { + if (block.nVersion < 3 && IsSuperMajority(3, pindexPrev, consensusParams.nMajorityRejectBlockOutdated, consensusParams)) return state.Invalid(error("%s : rejected nVersion=2 block", __func__), REJECT_OBSOLETE, "bad-version"); - } return true; } @@ -2663,6 +2684,7 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta bool ContextualCheckBlock(const CBlock& block, CValidationState& state, CBlockIndex * const pindexPrev) { const int nHeight = pindexPrev == NULL ? 0 : pindexPrev->nHeight + 1; + const Consensus::Params& consensusParams = Params().GetConsensus(); // Check that all transactions are finalized BOOST_FOREACH(const CTransaction& tx, block.vtx) @@ -2672,7 +2694,7 @@ bool ContextualCheckBlock(const CBlock& block, CValidationState& state, CBlockIn // Enforce block.nVersion=2 rule that the coinbase starts with serialized block height // if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet): - if (block.nVersion >= 2 && IsSuperMajority(2, pindexPrev, Params().EnforceBlockUpgradeMajority())) + if (block.nVersion >= 2 && IsSuperMajority(2, pindexPrev, consensusParams.nMajorityEnforceBlockUpgrade, consensusParams)) { CScript expect = CScript() << nHeight; if (block.vtx[0].vin[0].scriptSig.size() < expect.size() || @@ -2779,11 +2801,10 @@ bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex** ppindex, return true; } -static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned int nRequired) +static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned nRequired, const Consensus::Params& consensusParams) { - unsigned int nToCheck = Params().ToCheckBlockUpgradeMajority(); unsigned int nFound = 0; - for (unsigned int i = 0; i < nToCheck && nFound < nRequired && pstart != NULL; i++) + for (int i = 0; i < consensusParams.nMajorityWindow && nFound < nRequired && pstart != NULL; i++) { if (pstart->nVersion >= minVersion) ++nFound; @@ -2932,7 +2953,7 @@ void FindFilesToPrune(std::set<int>& setFilesToPrune) return; } - unsigned int nLastBlockWeMustKeep = chainActive.Tip()->nHeight - MIN_BLOCKS_TO_KEEP; + unsigned int nLastBlockWeCanPrune = chainActive.Tip()->nHeight - MIN_BLOCKS_TO_KEEP; uint64_t nCurrentUsage = CalculateCurrentUsage(); // We don't check to prune until after we've allocated new space for files // So we should leave a buffer under our target to account for another allocation @@ -2952,7 +2973,7 @@ void FindFilesToPrune(std::set<int>& setFilesToPrune) break; // don't prune files that could have a block within MIN_BLOCKS_TO_KEEP of the main chain's tip - if (vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeMustKeep) + if (vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune) break; PruneOneBlockFile(fileNumber); @@ -2963,10 +2984,10 @@ void FindFilesToPrune(std::set<int>& setFilesToPrune) } } - LogPrint("prune", "Prune: target=%dMiB actual=%dMiB diff=%dMiB min_must_keep=%d removed %d blk/rev pairs\n", + LogPrint("prune", "Prune: target=%dMiB actual=%dMiB diff=%dMiB max_prune_height=%d removed %d blk/rev pairs\n", nPruneTarget/1024/1024, nCurrentUsage/1024/1024, ((int64_t)nPruneTarget - (int64_t)nCurrentUsage)/1024/1024, - nLastBlockWeMustKeep, count); + nLastBlockWeCanPrune, count); } bool CheckDiskSpace(uint64_t nAdditionalBytes) @@ -3197,7 +3218,7 @@ bool CVerifyDB::VerifyDB(CCoinsView *coinsview, int nCheckLevel, int nCheckDepth } } // check level 3: check for inconsistencies during memory-only disconnect of tip blocks - if (nCheckLevel >= 3 && pindex == pindexState && (coins.GetCacheSize() + pcoinsTip->GetCacheSize()) <= nCoinCacheSize) { + if (nCheckLevel >= 3 && pindex == pindexState && (coins.DynamicMemoryUsage() + pcoinsTip->DynamicMemoryUsage()) <= nCoinCacheUsage) { bool fClean = true; if (!DisconnectBlock(block, state, pindex, coins, &fClean)) return error("VerifyDB(): *** irrecoverable inconsistency in block data at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString()); |