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smart utxo selection without press release to coin telegraph

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This commit is contained in:
jl777
2018-08-05 23:36:00 -11:00
parent b24e0ff44e
commit 718255b3fd
3 changed files with 102 additions and 7 deletions
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98
src/cc/CCtx.cpp
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@@ -201,36 +201,124 @@ uint64_t CCutxovalue(char *coinaddr,uint256 utxotxid,int32_t utxovout)
return(0);
}
int32_t CC_vinselect(int32_t *aboveip,int64_t *abovep,int32_t *belowip,int64_t *belowp,struct CC_utxo utxos[],int32_t numunspents,uint64_t value)
{
int32_t i,abovei,belowi; int64_t above,below,gap,atx_value;
abovei = belowi = -1;
for (above=below=i=0; i<numunspents; i++)
{
if ( (atx_value= utxos[i].nValue) <= 0 )
continue;
if ( atx_value == value )
{
*aboveip = *belowip = i;
*abovep = *belowp = 0;
return(i);
}
else if ( atx_value > value )
{
gap = (atx_value - value);
if ( above == 0 || gap < above )
{
above = gap;
abovei = i;
}
}
else
{
gap = (value - atx_value);
if ( below == 0 || gap < below )
{
below = gap;
belowi = i;
}
}
//printf("value %.8f gap %.8f abovei.%d %.8f belowi.%d %.8f\n",dstr(value),dstr(gap),abovei,dstr(above),belowi,dstr(below));
}
*aboveip = abovei;
*abovep = above;
*belowip = belowi;
*belowp = below;
//printf("above.%d below.%d\n",abovei,belowi);
if ( abovei >= 0 && belowi >= 0 )
{
if ( above < (below >> 1) )
return(abovei);
else return(belowi);
}
else if ( abovei >= 0 )
return(abovei);
else return(belowi);
//return(abovei >= 0 && above < (below>>1) ? abovei : belowi);
}
uint64_t AddNormalinputs(CMutableTransaction &mtx,CPubKey mypk,uint64_t total,int32_t maxinputs)
{
int32_t vout,j,n = 0; uint64_t nValue,totalinputs = 0; uint256 txid,hashBlock; std::vector<COutput> vecOutputs; CTransaction tx;
int32_t abovei,belowi,ind,vout,i,n = 0,maxutxos=1024; int64_t above,below; uint64_t remains,nValue,totalinputs = 0; uint256 txid,hashBlock; std::vector<COutput> vecOutputs; CTransaction tx; struct CC_utxo *utxos,*up;
#ifdef ENABLE_WALLET
const CKeyStore& keystore = *pwalletMain;
assert(pwalletMain != NULL);
LOCK2(cs_main, pwalletMain->cs_wallet);
pwalletMain->AvailableCoins(vecOutputs, false, NULL, true);
utxos = calloc(maxutxos,sizeof(*utxos));
BOOST_FOREACH(const COutput& out, vecOutputs)
{
if ( out.fSpendable != 0 )
{
txid = out.tx->GetHash();
vout = out.i;
for (j=0; j<mtx.vin.size(); j++)
if ( txid == mtx.vin[j].prevout.hash && vout == mtx.vin[j].prevout.n )
for (i=0; i<mtx.vin.size(); i++)
if ( txid == mtx.vin[i].prevout.hash && vout == mtx.vin[i].prevout.n )
break;
if ( j != mtx.vin.size() )
if ( i != mtx.vin.size() )
continue;
if ( myIsutxo_spentinmempool(txid,vout) == 0 )
{
mtx.vin.push_back(CTxIn(txid,vout,CScript()));
up = &utxos[n++];
up->txid = txid;
up->nValue = out.tx->vout[out.i].nValue;
up->vout = vout;
/*mtx.vin.push_back(CTxIn(txid,vout,CScript()));
nValue = out.tx->vout[out.i].nValue;
totalinputs += nValue;
n++;
if ( totalinputs >= total || n >= maxinputs )
break;*/
if ( n >= maxutxos )
break;
}
}
}
remains = total;
for (i=0; i<maxinputs; i++)
{
below = above = 0;
abovei = belowi = -1;
if ( CC_vinselect(&abovei,&above,&belowi,&below,utxos,n,remains) < 0 )
{
printf("error finding unspent i.%d of %d, %.8f vs %.8f\n",i,numunspents,dstr(remains),dstr(amount));
free(utxos);
return(0);
}
if ( belowi < 0 || abovei >= 0 )
ind = abovei;
else ind = belowi;
if ( ind < 0 )
{
printf("error finding unspent i.%d of %d, %.8f vs %.8f, abovei.%d belowi.%d ind.%d\n",i,numunspents,dstr(remains),dstr(amount),abovei,belowi,ind);
free(utxos);
return(0);
}
up = utxos[ind];
utxos[ind] = utxos[--n];
memset(&utxos[n],0,sizeof(utxos[n]));
mtx.vin.push_back(CTxIn(up->txid,up->vout,CScript()));
totalinputs += up->nValue;
remains -= up->nValue;
if ( totalinputs >= total || (i+1) >= maxinputs )
break;
}
free(utxos);
if ( totalinputs >= total )
return(totalinputs);
#endif