diff options
Diffstat (limited to 'src/miner.cpp')
| -rw-r--r-- | src/miner.cpp | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/src/miner.cpp b/src/miner.cpp index bfe382966a..dca8609e17 100644 --- a/src/miner.cpp +++ b/src/miner.cpp @@ -176,7 +176,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) int64 nFees = 0; { LOCK2(cs_main, mempool.cs); - CBlockIndex* pindexPrev = pindexBest; + CBlockIndex* pindexPrev = chainActive.Tip(); CCoinsViewCache view(*pcoinsTip, true); // Priority order to process transactions @@ -238,9 +238,21 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) } if (fMissingInputs) continue; - // Priority is sum(valuein * age) / txsize + // Priority is sum(valuein * age) / modified_txsize unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); - dPriority /= nTxSize; + unsigned int nTxSizeMod = nTxSize; + // In order to avoid disincentivizing cleaning up the UTXO set we don't count + // the constant overhead for each txin and up to 110 bytes of scriptSig (which + // is enough to cover a compressed pubkey p2sh redemption) for priority. + // Providing any more cleanup incentive than making additional inputs free would + // risk encouraging people to create junk outputs to redeem later. + BOOST_FOREACH(const CTxIn& txin, tx.vin) + { + unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size()); + if (nTxSizeMod > offset) + nTxSizeMod -= offset; + } + dPriority /= nTxSizeMod; // This is a more accurate fee-per-kilobyte than is used by the client code, because the // client code rounds up the size to the nearest 1K. That's good, because it gives an @@ -467,7 +479,7 @@ bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey) // Found a solution { LOCK(cs_main); - if (pblock->hashPrevBlock != hashBestChain) + if (pblock->hashPrevBlock != chainActive.Tip()->GetBlockHash()) return error("BitcoinMiner : generated block is stale"); // Remove key from key pool @@ -510,7 +522,7 @@ void static BitcoinMiner(CWallet *pwallet) // Create new block // unsigned int nTransactionsUpdatedLast = nTransactionsUpdated; - CBlockIndex* pindexPrev = pindexBest; + CBlockIndex* pindexPrev = chainActive.Tip(); auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlockWithKey(reservekey)); if (!pblocktemplate.get()) @@ -613,7 +625,7 @@ void static BitcoinMiner(CWallet *pwallet) break; if (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60) break; - if (pindexPrev != pindexBest) + if (pindexPrev != chainActive.Tip()) break; // Update nTime every few seconds |