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CBlockIndex::GetBlockWork() + GetProofIncrement(nBits) -> GetBlockProof(CBlockIndex)

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This commit is contained in:
jtimon 2014-10-29 17:00:02 +01:00
parent 22c4272bf4
commit 092b58d13d
4 changed files with 7 additions and 13 deletions
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5
src/chain.h
View file

@ -217,11 +217,6 @@ public:
return (int64_t)nTime; return (int64_t)nTime;
} }
uint256 GetBlockWork() const
{
return GetProofIncrement(nBits);
}
enum { nMedianTimeSpan=11 }; enum { nMedianTimeSpan=11 };
int64_t GetMedianTimePast() const int64_t GetMedianTimePast() const

8
src/main.cpp
View file

@ -1205,7 +1205,7 @@ void CheckForkWarningConditions()
if (pindexBestForkTip && chainActive.Height() - pindexBestForkTip->nHeight >= 72) if (pindexBestForkTip && chainActive.Height() - pindexBestForkTip->nHeight >= 72)
pindexBestForkTip = NULL; pindexBestForkTip = NULL;
if (pindexBestForkTip || (pindexBestInvalid && pindexBestInvalid->nChainWork > chainActive.Tip()->nChainWork + (chainActive.Tip()->GetBlockWork() * 6))) if (pindexBestForkTip || (pindexBestInvalid && pindexBestInvalid->nChainWork > chainActive.Tip()->nChainWork + (GetBlockProof(*chainActive.Tip()) * 6)))
{ {
if (!fLargeWorkForkFound) if (!fLargeWorkForkFound)
{ {
@ -1256,7 +1256,7 @@ void CheckForkWarningConditionsOnNewFork(CBlockIndex* pindexNewForkTip)
// We define it this way because it allows us to only store the highest fork tip (+ base) which meets // We define it this way because it allows us to only store the highest fork tip (+ base) which meets
// the 7-block condition and from this always have the most-likely-to-cause-warning fork // the 7-block condition and from this always have the most-likely-to-cause-warning fork
if (pfork && (!pindexBestForkTip || (pindexBestForkTip && pindexNewForkTip->nHeight > pindexBestForkTip->nHeight)) && if (pfork && (!pindexBestForkTip || (pindexBestForkTip && pindexNewForkTip->nHeight > pindexBestForkTip->nHeight)) &&
pindexNewForkTip->nChainWork - pfork->nChainWork > (pfork->GetBlockWork() * 7) && pindexNewForkTip->nChainWork - pfork->nChainWork > (GetBlockProof(*pfork) * 7) &&
chainActive.Height() - pindexNewForkTip->nHeight < 72) chainActive.Height() - pindexNewForkTip->nHeight < 72)
{ {
pindexBestForkTip = pindexNewForkTip; pindexBestForkTip = pindexNewForkTip;
@ -2095,7 +2095,7 @@ CBlockIndex* AddToBlockIndex(const CBlockHeader& block)
pindexNew->nHeight = pindexNew->pprev->nHeight + 1; pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
pindexNew->BuildSkip(); pindexNew->BuildSkip();
} }
pindexNew->nChainWork = (pindexNew->pprev ? pindexNew->pprev->nChainWork : 0) + pindexNew->GetBlockWork(); pindexNew->nChainWork = (pindexNew->pprev ? pindexNew->pprev->nChainWork : 0) + GetBlockProof(*pindexNew);
pindexNew->RaiseValidity(BLOCK_VALID_TREE); pindexNew->RaiseValidity(BLOCK_VALID_TREE);
if (pindexBestHeader == NULL || pindexBestHeader->nChainWork < pindexNew->nChainWork) if (pindexBestHeader == NULL || pindexBestHeader->nChainWork < pindexNew->nChainWork)
pindexBestHeader = pindexNew; pindexBestHeader = pindexNew;
@ -2788,7 +2788,7 @@ bool static LoadBlockIndexDB()
BOOST_FOREACH(const PAIRTYPE(int, CBlockIndex*)& item, vSortedByHeight) BOOST_FOREACH(const PAIRTYPE(int, CBlockIndex*)& item, vSortedByHeight)
{ {
CBlockIndex* pindex = item.second; CBlockIndex* pindex = item.second;
pindex->nChainWork = (pindex->pprev ? pindex->pprev->nChainWork : 0) + pindex->GetBlockWork(); pindex->nChainWork = (pindex->pprev ? pindex->pprev->nChainWork : 0) + GetBlockProof(*pindex);
if (pindex->nStatus & BLOCK_HAVE_DATA) { if (pindex->nStatus & BLOCK_HAVE_DATA) {
if (pindex->pprev) { if (pindex->pprev) {
if (pindex->pprev->nChainTx) { if (pindex->pprev->nChainTx) {

4
src/pow.cpp
View file

@ -97,12 +97,12 @@ bool CheckProofOfWork(uint256 hash, unsigned int nBits)
return true; return true;
} }
uint256 GetProofIncrement(unsigned int nBits) uint256 GetBlockProof(const CBlockIndex& block)
{ {
uint256 bnTarget; uint256 bnTarget;
bool fNegative; bool fNegative;
bool fOverflow; bool fOverflow;
bnTarget.SetCompact(nBits, &fNegative, &fOverflow); bnTarget.SetCompact(block.nBits, &fNegative, &fOverflow);
if (fNegative || fOverflow || bnTarget == 0) if (fNegative || fOverflow || bnTarget == 0)
return 0; return 0;
// We need to compute 2**256 / (bnTarget+1), but we can't represent 2**256 // We need to compute 2**256 / (bnTarget+1), but we can't represent 2**256

3
src/pow.h
View file

@ -16,7 +16,6 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
/** Check whether a block hash satisfies the proof-of-work requirement specified by nBits */ /** Check whether a block hash satisfies the proof-of-work requirement specified by nBits */
bool CheckProofOfWork(uint256 hash, unsigned int nBits); bool CheckProofOfWork(uint256 hash, unsigned int nBits);
uint256 GetBlockProof(const CBlockIndex& block);
uint256 GetProofIncrement(unsigned int nBits);
#endif // BITCOIN_POW_H #endif // BITCOIN_POW_H