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Bugfix: Use timestamp in coinbase rather than "bits", needed to ensure coinbase txn is unique even if address is the same

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This commit is contained in:
Luke Dashjr 2011-09-06 16:39:05 -04:00
parent 49c8e53ee2
commit 83f4cd156e
3 changed files with 8 additions and 10 deletions
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7
src/main.cpp
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@ -2794,7 +2794,7 @@ CBlock* CreateNewBlock(CReserveKey& reservekey)
} }
void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime) void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
{ {
// Update nExtraNonce // Update nExtraNonce
static uint256 hashPrevBlock; static uint256 hashPrevBlock;
@ -2804,7 +2804,7 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int&
hashPrevBlock = pblock->hashPrevBlock; hashPrevBlock = pblock->hashPrevBlock;
} }
++nExtraNonce; ++nExtraNonce;
pblock->vtx[0].vin[0].scriptSig = CScript() << pblock->nBits << CBigNum(nExtraNonce); pblock->vtx[0].vin[0].scriptSig = CScript() << pblock->nTime << CBigNum(nExtraNonce);
pblock->hashMerkleRoot = pblock->BuildMerkleTree(); pblock->hashMerkleRoot = pblock->BuildMerkleTree();
} }
@ -2902,7 +2902,6 @@ void static BitcoinMiner(CWallet *pwallet)
// Each thread has its own key and counter // Each thread has its own key and counter
CReserveKey reservekey(pwallet); CReserveKey reservekey(pwallet);
unsigned int nExtraNonce = 0; unsigned int nExtraNonce = 0;
int64 nPrevTime = 0;
while (fGenerateBitcoins) while (fGenerateBitcoins)
{ {
@ -2929,7 +2928,7 @@ void static BitcoinMiner(CWallet *pwallet)
auto_ptr<CBlock> pblock(CreateNewBlock(reservekey)); auto_ptr<CBlock> pblock(CreateNewBlock(reservekey));
if (!pblock.get()) if (!pblock.get())
return; return;
IncrementExtraNonce(pblock.get(), pindexPrev, nExtraNonce, nPrevTime); IncrementExtraNonce(pblock.get(), pindexPrev, nExtraNonce);
printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size()); printf("Running BitcoinMiner with %d transactions in block\n", pblock->vtx.size());

2
src/main.h
View file

@ -96,7 +96,7 @@ bool ProcessMessages(CNode* pfrom);
bool SendMessages(CNode* pto, bool fSendTrickle); bool SendMessages(CNode* pto, bool fSendTrickle);
void GenerateBitcoins(bool fGenerate, CWallet* pwallet); void GenerateBitcoins(bool fGenerate, CWallet* pwallet);
CBlock* CreateNewBlock(CReserveKey& reservekey); CBlock* CreateNewBlock(CReserveKey& reservekey);
void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime); void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce);
void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1); void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1);
bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey); bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey);
bool CheckProofOfWork(uint256 hash, unsigned int nBits); bool CheckProofOfWork(uint256 hash, unsigned int nBits);

9
src/rpc.cpp
View file

@ -1615,15 +1615,14 @@ Value getwork(const Array& params, bool fHelp)
vNewBlock.push_back(pblock); vNewBlock.push_back(pblock);
} }
// Update nExtraNonce
static unsigned int nExtraNonce = 0;
static int64 nPrevTime = 0;
IncrementExtraNonce(pblock, pindexPrev, nExtraNonce, nPrevTime);
// Update nTime // Update nTime
pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime()); pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
pblock->nNonce = 0; pblock->nNonce = 0;
// Update nExtraNonce
static unsigned int nExtraNonce = 0;
IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
// Save // Save
mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig); mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);