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Apply predetermined block for testnet fork

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PR #589 caused a condition for testnet difficulty to not match at
a couple of cases pre block 145k leading to issues with -reindex.

This makes the testnet fork hard at block 157500, while retaining
every case before that block.
This commit is contained in:
Patrick Lodder 2014-08-05 00:18:52 +02:00
parent 7b70a67db0
commit 7d18abff71
1 changed files with 15 additions and 6 deletions
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21
src/main.cpp
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@ -1246,6 +1246,7 @@ static const int64_t nTargetSpacing = 60; // Dogecoin: 1 minute
static const int64_t nInterval = nTargetTimespan / nTargetSpacing;
static const int64_t nDiffChangeTarget = 145000; // Patch effective @ block 145000
static const int64_t nTestnetResetTargetFix = 157500; // Testnet enables target reset at block 157500
//
// minimum amount of work that could possibly be required nTime after
@ -1299,7 +1300,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
if (pindexLast == NULL)
return nProofOfWorkLimit;
if (TestNet() && pblock->nTime > pindexLast->nTime + nTargetSpacing*2)
if (TestNet() && pindexLast->nHeight >= nTestnetResetTargetFix && pblock->nTime > pindexLast->nTime + nTargetSpacing*2)
{
// Special difficulty rule for testnet:
// If the new block's timestamp is more than 2* nTargetSpacing minutes
@ -1312,11 +1313,19 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
{
if (TestNet())
{
// Return the last non-special-min-difficulty-rules-block
const CBlockIndex* pindex = pindexLast;
while (pindex->pprev && pindex->nHeight % retargetInterval != 0 && pindex->nBits == nProofOfWorkLimit)
pindex = pindex->pprev;
return pindex->nBits;
if (pblock->nTime > pindexLast->nTime + nTargetSpacing*2)
{
// Special difficulty rule for testnet:
// If the new block's timestamp is more than 2* nTargetSpacing minutes
// then allow mining of a min-difficulty block.
return nProofOfWorkLimit;
} else {
// Return the last non-special-min-difficulty-rules-block
const CBlockIndex* pindex = pindexLast;
while (pindex->pprev && pindex->nHeight % retargetInterval != 0 && pindex->nBits == nProofOfWorkLimit)
pindex = pindex->pprev;
return pindex->nBits;
}
}
return pindexLast->nBits;
}