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PoW targeting in -ac_staking=perc mode

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This commit is contained in:
jl777
2018-04-10 16:40:59 +03:00
parent b4b84fb273
commit 4786d20c0b
3 changed files with 98 additions and 14 deletions
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105
src/komodo_gateway.h
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@@ -726,6 +726,66 @@ uint32_t komodo_stake(arith_uint256 bnTarget,int32_t nHeight,uint256 txid,int32_
return(blocktime * winner);
}
#define KOMODO_POWMINMULT 16
arith_uint256 komodo_PoWtarget(int32_t *PoSpercp,arith_uint256 target,int32_t height,int32_t goalperc)
{
CBlockIndex *pindex; arith_uint256 bnTarget,hashval,sum,ave; bool fNegative,fOverflow; int32_t i,n,ht,percPoS,i,diff;
*percPoSp = percPoS = 0;
sum = arith_uint256(0);
ave = sum;
for (i=n=0; i<100; i++)
{
ht = height - 100 + i;
if ( (pindex= komodo_chainactive(ht)) != 0 )
{
bnTarget.SetCompact(pindex->nBits,&fNegative,&fOverflow);
bnTarget = (bnTarget / arith_uint256(KOMODO_POWMINMULT));
hashval = UintToArith256(pindex->GetBlockHash());
if ( hashval <= bnTarget ) // PoW is never as easy as PoS/64, some PoS will be counted as PoW
{
sum += hashval;
n++;
} else percPoS++;
}
}
*percPoSp = percPoS;
target = (target / arith_uint256(KOMODO_POWMINMULT));
if ( n > 0 )
{
ave = (sum / arith_uint256(n));
if ( ave > target )
ave = target;
} else return(target);
if ( percPoS < goalperc ) // increase PoW diff -> lower bnTarget
{
bnTarget = (ave * arith_uint256(goalperc)) / arith_uint256(percPoS + goalperc);
for (i=31; i>=24; i--)
fprintf(stderr,"%02x",((uint8_t *)&ave)[i]);
fprintf(stderr," increase diff -> ")
for (i=31; i>=24; i--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[i]);
fprintf(stderr," floor diff ")
for (i=31; i>=24; i--)
fprintf(stderr,"%02x",((uint8_t *)&target)[i]);
fprintf(stderr," ht.%d percPoS.%d vs goal.%d -> diff %d\n",height,percPoS,goalperc,goalperc - percPoS);
}
else if ( percPoS > goalperc ) // decrease PoW diff -> raise bnTarget
{
bnTarget = ((ave * arith_uint256(goalperc)) + (target * arith_uint256(percPoS))) / arith_uint256(percPoS + goalperc);
for (i=31; i>=24; i--)
fprintf(stderr,"%02x",((uint8_t *)&ave)[i]);
fprintf(stderr," decrease diff -> ")
for (i=31; i>=24; i--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[i]);
fprintf(stderr," floor diff ")
for (i=31; i>=24; i--)
fprintf(stderr,"%02x",((uint8_t *)&target)[i]);
fprintf(stderr," ht.%d percPoS.%d vs goal.%d -> diff %d\n",height,percPoS,goalperc,goalperc - percPoS);
}
else bnTarget = ave; // recent ave is perfect
return(bnTarget);
}
int32_t komodo_check_deposit(int32_t height,const CBlock& block,uint32_t prevtime) // verify above block is valid pax pricing
{
static uint256 array[64]; static int32_t numbanned,indallvouts;
@@ -796,20 +856,43 @@ int32_t komodo_check_deposit(int32_t height,const CBlock& block,uint32_t prevtim
}
else
{
if ( ASSETCHAINS_STAKED != 0 && height >= 2 && txn_count > 1 )
if ( ASSETCHAINS_STAKED != 0 && height >= 2 )
{
arith_uint256 bnTarget; bool fNegative,fOverflow; CBlockIndex *previndex; uint32_t eligible;
if ( prevtime == 0 )
{
if ( (previndex= mapBlockIndex[block.hashPrevBlock]) != 0 )
prevtime = (uint32_t)previndex->nTime;
}
arith_uint256 bnTarget,hashval; int32_t PoSperc; bool fNegative,fOverflow; CBlockIndex *previndex; uint32_t eligible,isPoS = 0;
bnTarget.SetCompact(block.nBits, &fNegative, &fOverflow);
eligible = komodo_stake(bnTarget,height,block.vtx[txn_count-1].vin[0].prevout.hash,block.vtx[txn_count-1].vin[0].prevout.n,block.nTime,prevtime,(char *)"");
if ( eligible == 0 || eligible > block.nTime )
if ( txn_count > 1 )
{
fprintf(stderr,"eligible.%u vs blocktime.%u, lag.%d\n",eligible,(uint32_t)block.nTime,(int32_t)(eligible - block.nTime));
return(-1);
if ( prevtime == 0 )
{
if ( (previndex= mapBlockIndex[block.hashPrevBlock]) != 0 )
prevtime = (uint32_t)previndex->nTime;
}
eligible = komodo_stake(bnTarget,height,block.vtx[txn_count-1].vin[0].prevout.hash,block.vtx[txn_count-1].vin[0].prevout.n,block.nTime,prevtime,(char *)"");
if ( eligible == 0 || eligible > block.nTime )
{
fprintf(stderr,"PoS failute ht.%d eligible.%u vs blocktime.%u, lag.%d\n",height,eligible,(uint32_t)block.nTime,(int32_t)(eligible - block.nTime));
} else isPoS = 1;
}
if ( isPoS == 0 && height > 100 )
{
if ( ASSETCHAINS_STAKED == 100 )
{
fprintf(stderr,"ht.%d 100% PoS after height 100 rule violated for -ac_staking=100\n",height);
return(-1);
}
// check PoW
bnTarget = komodo_PoWtarget(&PoSperc,bnTarget,height,ASSETCHAINS_STAKED);
hashval = UintToArith256(block.GetBlockHash());
if ( hashval > bnTarget )
{
for (i=31; i>=0; i--)
fprintf(stderr,"%02x",((uint8_t *)&hashval)[i]);
fprintf(stderr," > ");
for (i=31; i>=0; i--)
fprintf(stderr,"%02x",((uint8_t *)&bnTarget)[i]);
fprintf(stderr," ht.%d PoW diff violation PoSperc.%d vs goalperc.%d\n",height,PoSperc,(int32_t)ASSETCHAINS_STAKED);
return(-1);
}
}
}
if ( ASSETCHAINS_OVERRIDE_PUBKEY33[0] != 0 && ASSETCHAINS_COMMISSION != 0 && block.vtx[0].vout.size() > 1 )