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-rw-r--r--src/policy/feerate.h7
-rw-r--r--src/policy/fees.cpp4
-rw-r--r--src/test/mempool_tests.cpp6
-rw-r--r--src/txmempool.cpp4
4 files changed, 13 insertions, 8 deletions
diff --git a/src/policy/feerate.h b/src/policy/feerate.h
index 7e519e3efa..3449cdd699 100644
--- a/src/policy/feerate.h
+++ b/src/policy/feerate.h
@@ -20,10 +20,15 @@ class CFeeRate
{
private:
CAmount nSatoshisPerK; // unit is satoshis-per-1,000-bytes
+
public:
/** Fee rate of 0 satoshis per kB */
CFeeRate() : nSatoshisPerK(0) { }
- explicit CFeeRate(const CAmount& _nSatoshisPerK): nSatoshisPerK(_nSatoshisPerK) { }
+ template<typename I>
+ CFeeRate(const I _nSatoshisPerK): nSatoshisPerK(_nSatoshisPerK) {
+ // We've previously had bugs creep in from silent double->int conversion...
+ static_assert(std::is_integral<I>::value, "CFeeRate should be used without floats");
+ }
/** Constructor for a fee rate in satoshis per kB. The size in bytes must not exceed (2^63 - 1)*/
CFeeRate(const CAmount& nFeePaid, size_t nBytes);
/**
diff --git a/src/policy/fees.cpp b/src/policy/fees.cpp
index ca774cd74b..8056f385ab 100644
--- a/src/policy/fees.cpp
+++ b/src/policy/fees.cpp
@@ -714,7 +714,7 @@ CFeeRate CBlockPolicyEstimator::estimateRawFee(int confTarget, double successThr
if (median < 0)
return CFeeRate(0);
- return CFeeRate(median);
+ return CFeeRate(llround(median));
}
unsigned int CBlockPolicyEstimator::HighestTargetTracked(FeeEstimateHorizon horizon) const
@@ -901,7 +901,7 @@ CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, FeeCalculation
if (median < 0) return CFeeRate(0); // error condition
- return CFeeRate(median);
+ return CFeeRate(llround(median));
}
diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp
index 51b28d09fa..116210a297 100644
--- a/src/test/mempool_tests.cpp
+++ b/src/test/mempool_tests.cpp
@@ -559,15 +559,15 @@ BOOST_AUTO_TEST_CASE(MempoolSizeLimitTest)
// ... we should keep the same min fee until we get a block
pool.removeForBlock(vtx, 1);
SetMockTime(42 + 2*CTxMemPool::ROLLING_FEE_HALFLIFE);
- BOOST_CHECK_EQUAL(pool.GetMinFee(1).GetFeePerK(), (maxFeeRateRemoved.GetFeePerK() + 1000)/2);
+ BOOST_CHECK_EQUAL(pool.GetMinFee(1).GetFeePerK(), llround((maxFeeRateRemoved.GetFeePerK() + 1000)/2.0));
// ... then feerate should drop 1/2 each halflife
SetMockTime(42 + 2*CTxMemPool::ROLLING_FEE_HALFLIFE + CTxMemPool::ROLLING_FEE_HALFLIFE/2);
- BOOST_CHECK_EQUAL(pool.GetMinFee(pool.DynamicMemoryUsage() * 5 / 2).GetFeePerK(), (maxFeeRateRemoved.GetFeePerK() + 1000)/4);
+ BOOST_CHECK_EQUAL(pool.GetMinFee(pool.DynamicMemoryUsage() * 5 / 2).GetFeePerK(), llround((maxFeeRateRemoved.GetFeePerK() + 1000)/4.0));
// ... with a 1/2 halflife when mempool is < 1/2 its target size
SetMockTime(42 + 2*CTxMemPool::ROLLING_FEE_HALFLIFE + CTxMemPool::ROLLING_FEE_HALFLIFE/2 + CTxMemPool::ROLLING_FEE_HALFLIFE/4);
- BOOST_CHECK_EQUAL(pool.GetMinFee(pool.DynamicMemoryUsage() * 9 / 2).GetFeePerK(), (maxFeeRateRemoved.GetFeePerK() + 1000)/8);
+ BOOST_CHECK_EQUAL(pool.GetMinFee(pool.DynamicMemoryUsage() * 9 / 2).GetFeePerK(), llround((maxFeeRateRemoved.GetFeePerK() + 1000)/8.0));
// ... with a 1/4 halflife when mempool is < 1/4 its target size
SetMockTime(42 + 7*CTxMemPool::ROLLING_FEE_HALFLIFE + CTxMemPool::ROLLING_FEE_HALFLIFE/2 + CTxMemPool::ROLLING_FEE_HALFLIFE/4);
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index f68d677646..776d3f36ca 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -981,7 +981,7 @@ const CTxMemPool::setEntries & CTxMemPool::GetMemPoolChildren(txiter entry) cons
CFeeRate CTxMemPool::GetMinFee(size_t sizelimit) const {
LOCK(cs);
if (!blockSinceLastRollingFeeBump || rollingMinimumFeeRate == 0)
- return CFeeRate(rollingMinimumFeeRate);
+ return CFeeRate(llround(rollingMinimumFeeRate));
int64_t time = GetTime();
if (time > lastRollingFeeUpdate + 10) {
@@ -999,7 +999,7 @@ CFeeRate CTxMemPool::GetMinFee(size_t sizelimit) const {
return CFeeRate(0);
}
}
- return std::max(CFeeRate(rollingMinimumFeeRate), incrementalRelayFee);
+ return std::max(CFeeRate(llround(rollingMinimumFeeRate)), incrementalRelayFee);
}
void CTxMemPool::trackPackageRemoved(const CFeeRate& rate) {