| 974 | } |
| 975 | |
| 976 | CFeeRate CTxMemPool::GetMinFee(size_t sizelimit) const { |
| 977 | LOCK(cs); |
| 978 | if (!blockSinceLastRollingFeeBump || rollingMinimumFeeRate == 0) |
| 979 | return CFeeRate(llround(rollingMinimumFeeRate)); |
| 980 | |
| 981 | int64_t time = GetTime(); |
| 982 | if (time > lastRollingFeeUpdate + 10) { |
| 983 | double halflife = ROLLING_FEE_HALFLIFE; |
| 984 | if (DynamicMemoryUsage() < sizelimit / 4) |
| 985 | halflife /= 4; |
| 986 | else if (DynamicMemoryUsage() < sizelimit / 2) |
| 987 | halflife /= 2; |
| 988 | |
| 989 | rollingMinimumFeeRate = rollingMinimumFeeRate / pow(2.0, (time - lastRollingFeeUpdate) / halflife); |
| 990 | lastRollingFeeUpdate = time; |
| 991 | |
| 992 | if (rollingMinimumFeeRate < (double)incrementalRelayFee.GetFeePerK() / 2) { |
| 993 | rollingMinimumFeeRate = 0; |
| 994 | return CFeeRate(0); |
| 995 | } |
| 996 | } |
| 997 | return std::max(CFeeRate(llround(rollingMinimumFeeRate)), incrementalRelayFee); |
| 998 | } |
| 999 | |
| 1000 | void CTxMemPool::trackPackageRemoved(const CFeeRate& rate) { |
| 1001 | AssertLockHeld(cs); |