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Add CMutableTransaction and make CTransaction immutable.

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In addition, introduce a cached hash inside CTransaction, to prevent
recalculating it over and over again.
This commit is contained in:
Pieter Wuille
2014-06-07 13:53:27 +02:00
parent 8f59251b83
commit 4949004d68
19 changed files with 181 additions and 106 deletions
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18
src/miner.cpp
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@@ -86,14 +86,14 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
CBlock *pblock = &pblocktemplate->block; // pointer for convenience
// Create coinbase tx
CTransaction txNew;
CMutableTransaction txNew;
txNew.vin.resize(1);
txNew.vin[0].prevout.SetNull();
txNew.vout.resize(1);
txNew.vout[0].scriptPubKey = scriptPubKeyIn;
// Add our coinbase tx as first transaction
pblock->vtx.push_back(txNew);
// Add dummy coinbase tx as first transaction
pblock->vtx.push_back(CTransaction());
pblocktemplate->vTxFees.push_back(-1); // updated at end
pblocktemplate->vTxSigOps.push_back(-1); // updated at end
@@ -294,7 +294,10 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
nLastBlockSize = nBlockSize;
LogPrintf("CreateNewBlock(): total size %u\n", nBlockSize);
pblock->vtx[0].vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees);
// Compute final coinbase transaction.
txNew.vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees);
txNew.vin[0].scriptSig = CScript() << OP_0 << OP_0;
pblock->vtx[0] = txNew;
pblocktemplate->vTxFees[0] = -nFees;
// Fill in header
@@ -302,7 +305,6 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
UpdateTime(*pblock, pindexPrev);
pblock->nBits = GetNextWorkRequired(pindexPrev, pblock);
pblock->nNonce = 0;
pblock->vtx[0].vin[0].scriptSig = CScript() << OP_0 << OP_0;
pblocktemplate->vTxSigOps[0] = GetLegacySigOpCount(pblock->vtx[0]);
CBlockIndex indexDummy(*pblock);
@@ -328,9 +330,11 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int&
}
++nExtraNonce;
unsigned int nHeight = pindexPrev->nHeight+1; // Height first in coinbase required for block.version=2
pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CScriptNum(nExtraNonce)) + COINBASE_FLAGS;
assert(pblock->vtx[0].vin[0].scriptSig.size() <= 100);
CMutableTransaction txCoinbase(pblock->vtx[0]);
txCoinbase.vin[0].scriptSig = (CScript() << nHeight << CScriptNum(nExtraNonce)) + COINBASE_FLAGS;
assert(txCoinbase.vin[0].scriptSig.size() <= 100);
pblock->vtx[0] = txCoinbase;
pblock->hashMerkleRoot = pblock->BuildMerkleTree();
}