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Reset extraNonce only when prevBlock changes, so miners can continue updating the time on their work until it's stale

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This commit is contained in:
Luke Dashjr 2011-06-12 20:16:54 -04:00
parent aa4a9c5250
commit 02d87b3aa3
1 changed files with 5 additions and 4 deletions
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9
main.cpp
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@ -3447,12 +3447,13 @@ CBlock* CreateNewBlock(CReserveKey& reservekey)
void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime)
{
// Update nExtraNonce
int64 nNow = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
if (++nExtraNonce >= 0x7f && nNow > nPrevTime+15)
static uint256 hashPrevBlock;
if (hashPrevBlock != pblock->hashPrevBlock)
{
nExtraNonce = 1;
nPrevTime = nNow;
nExtraNonce = 0;
hashPrevBlock = pblock->hashPrevBlock;
}
++nExtraNonce;
pblock->vtx[0].vin[0].scriptSig = CScript() << pblock->nBits << CBigNum(nExtraNonce);
pblock->hashMerkleRoot = pblock->BuildMerkleTree();
}