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policy/fees: small readability improvements

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Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
This commit is contained in:
Antoine Poinsot 2020-07-30 21:19:38 +02:00
parent 5b8cb35621
commit 569d92a4d2
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GPG key ID: E13FC145CD3F4304
1 changed files with 17 additions and 19 deletions
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36
src/policy/fees.cpp
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@ -55,7 +55,7 @@ private:
// Sum the total feerate of all tx's in each bucket
// Track the historical moving average of this total over blocks
std::vector<double> avg;
std::vector<double> m_feerate_avg;
// Combine the conf counts with tx counts to calculate the confirmation % for each Y,X
// Combine the total value with the tx counts to calculate the avg feerate per bucket
@ -137,11 +137,9 @@ public:
TxConfirmStats::TxConfirmStats(const std::vector<double>& defaultBuckets,
const std::map<double, unsigned int>& defaultBucketMap,
unsigned int maxPeriods, double _decay, unsigned int _scale)
: buckets(defaultBuckets), bucketMap(defaultBucketMap)
: buckets(defaultBuckets), bucketMap(defaultBucketMap), decay(_decay), scale(_scale)
{
decay = _decay;
assert(_scale != 0 && "_scale must be non-zero");
scale = _scale;
confAvg.resize(maxPeriods);
for (unsigned int i = 0; i < maxPeriods; i++) {
confAvg[i].resize(buckets.size());
@ -152,7 +150,7 @@ TxConfirmStats::TxConfirmStats(const std::vector<double>& defaultBuckets,
}
txCtAvg.resize(buckets.size());
avg.resize(buckets.size());
m_feerate_avg.resize(buckets.size());
resizeInMemoryCounters(buckets.size());
}
@ -170,24 +168,24 @@ void TxConfirmStats::resizeInMemoryCounters(size_t newbuckets) {
void TxConfirmStats::ClearCurrent(unsigned int nBlockHeight)
{
for (unsigned int j = 0; j < buckets.size(); j++) {
oldUnconfTxs[j] += unconfTxs[nBlockHeight%unconfTxs.size()][j];
oldUnconfTxs[j] += unconfTxs[nBlockHeight % unconfTxs.size()][j];
unconfTxs[nBlockHeight%unconfTxs.size()][j] = 0;
}
}
void TxConfirmStats::Record(int blocksToConfirm, double val)
void TxConfirmStats::Record(int blocksToConfirm, double feerate)
{
// blocksToConfirm is 1-based
if (blocksToConfirm < 1)
return;
int periodsToConfirm = (blocksToConfirm + scale - 1)/scale;
unsigned int bucketindex = bucketMap.lower_bound(val)->second;
int periodsToConfirm = (blocksToConfirm + scale - 1) / scale;
unsigned int bucketindex = bucketMap.lower_bound(feerate)->second;
for (size_t i = periodsToConfirm; i <= confAvg.size(); i++) {
confAvg[i - 1][bucketindex]++;
}
txCtAvg[bucketindex]++;
avg[bucketindex] += val;
m_feerate_avg[bucketindex] += feerate;
}
void TxConfirmStats::UpdateMovingAverages()
@ -197,8 +195,8 @@ void TxConfirmStats::UpdateMovingAverages()
confAvg[i][j] = confAvg[i][j] * decay;
for (unsigned int i = 0; i < failAvg.size(); i++)
failAvg[i][j] = failAvg[i][j] * decay;
avg[j] = avg[j] * decay;
txCtAvg[j] = txCtAvg[j] * decay;
m_feerate_avg[j] *= decay;
txCtAvg[j] *= decay;
}
}
@ -212,8 +210,8 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
double totalNum = 0; // Total number of tx's that were ever confirmed
int extraNum = 0; // Number of tx's still in mempool for confTarget or longer
double failNum = 0; // Number of tx's that were never confirmed but removed from the mempool after confTarget
int periodTarget = (confTarget + scale - 1)/scale;
int maxbucketindex = buckets.size() - 1;
const int periodTarget = (confTarget + scale - 1) / scale;
const int maxbucketindex = buckets.size() - 1;
// We'll combine buckets until we have enough samples.
// The near and far variables will define the range we've combined
@ -243,7 +241,7 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
totalNum += txCtAvg[bucket];
failNum += failAvg[periodTarget - 1][bucket];
for (unsigned int confct = confTarget; confct < GetMaxConfirms(); confct++)
extraNum += unconfTxs[(nBlockHeight - confct)%bins][bucket];
extraNum += unconfTxs[(nBlockHeight - confct) % bins][bucket];
extraNum += oldUnconfTxs[bucket];
// If we have enough transaction data points in this range of buckets,
// we can test for success
@ -307,7 +305,7 @@ double TxConfirmStats::EstimateMedianVal(int confTarget, double sufficientTxVal,
if (txCtAvg[j] < txSum)
txSum -= txCtAvg[j];
else { // we're in the right bucket
median = avg[j] / txCtAvg[j];
median = m_feerate_avg[j] / txCtAvg[j];
break;
}
}
@ -351,7 +349,7 @@ void TxConfirmStats::Write(CAutoFile& fileout) const
{
fileout << decay;
fileout << scale;
fileout << avg;
fileout << m_feerate_avg;
fileout << txCtAvg;
fileout << confAvg;
fileout << failAvg;
@ -374,8 +372,8 @@ void TxConfirmStats::Read(CAutoFile& filein, int nFileVersion, size_t numBuckets
throw std::runtime_error("Corrupt estimates file. Scale must be non-zero");
}
filein >> avg;
if (avg.size() != numBuckets) {
filein >> m_feerate_avg;
if (m_feerate_avg.size() != numBuckets) {
throw std::runtime_error("Corrupt estimates file. Mismatch in feerate average bucket count");
}
filein >> txCtAvg;