sikkienl/dash
1
0
Fork 0
mirror of https://github.com/dashpay/dash.git synced 2024-12-25 20:12:57 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Remove temporary fork handling for emergency difficulty reduction on testnet

Browse Source 
As we reset testnet, we can also remove the special handling for old blocks.
This commit is contained in:
Alexander Block 2018-12-13 21:51:27 +01:00
parent 79d543e896
commit 793e74cc9f
1 changed files with 11 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
src/pow.cpp
View File

@ -89,43 +89,18 @@ unsigned int static DarkGravityWave(const CBlockIndex* pindexLast, const CBlockH
return bnPowLimit.GetCompact();
}
if (params.fPowAllowMinDifficultyBlocks && (
// testnet ...
(params.hashDevnetGenesisBlock.IsNull() && pindexLast->nChainWork >= UintToArith256(uint256S("0x000000000000000000000000000000000000000000000000003e9ccfe0e03e01"))) ||
// or devnet
!params.hashDevnetGenesisBlock.IsNull())) {
// NOTE: 000000000000000000000000000000000000000000000000003e9ccfe0e03e01 is the work of the "wrong" chain,
// so this rule activates there immediately and new blocks with high diff from that chain are going
// to be rejected by updated nodes. Note, that old nodes are going to reject blocks from updated nodes
// after the "right" chain reaches this amount of work too. This is a temporary condition which should
// be removed when we decide to hard-fork testnet again.
// TODO: remove "testnet+work OR devnet" part on next testnet hard-fork
// Special difficulty rule for testnet/devnet:
// If the new block's timestamp is more than 2* 2.5 minutes
// then allow mining of a min-difficulty block.
// start using smoother adjustment on testnet when total work hits
// 000000000000000000000000000000000000000000000000003ff00000000000
if (pindexLast->nChainWork >= UintToArith256(uint256S("0x000000000000000000000000000000000000000000000000003ff00000000000"))
// and immediately on devnet
|| !params.hashDevnetGenesisBlock.IsNull()) {
// recent block is more than 2 hours old
if (pblock->GetBlockTime() > pindexLast->GetBlockTime() + 2 * 60 * 60) {
return bnPowLimit.GetCompact();
}
// recent block is more than 10 minutes old
if (pblock->GetBlockTime() > pindexLast->GetBlockTime() + params.nPowTargetSpacing*4) {
arith_uint256 bnNew = arith_uint256().SetCompact(pindexLast->nBits) * 10;
if (bnNew > bnPowLimit) {
bnNew = bnPowLimit;
}
return bnNew.GetCompact();
}
} else {
// old stuff
if (pblock->GetBlockTime() > pindexLast->GetBlockTime() + params.nPowTargetSpacing*2) {
return bnPowLimit.GetCompact();
if (params.fPowAllowMinDifficultyBlocks) {
// recent block is more than 2 hours old
if (pblock->GetBlockTime() > pindexLast->GetBlockTime() + 2 * 60 * 60) {
return bnPowLimit.GetCompact();
}
// recent block is more than 10 minutes old
if (pblock->GetBlockTime() > pindexLast->GetBlockTime() + params.nPowTargetSpacing * 4) {
arith_uint256 bnNew = arith_uint256().SetCompact(pindexLast->nBits) * 10;
if (bnNew > bnPowLimit) {
bnNew = bnPowLimit;
}
return bnNew.GetCompact();
}
}