Merge pull request #6134

e304432 Pass reference to estimateSmartFee and cleanup whitespace (Suhas Daftuar)
56106a3 Expose RPC calls for estimatesmart functions (Alex Morcos)
e93a236 add estimateSmartFee to the unit test (Alex Morcos)
6303051 EstimateSmart functions consider mempool min fee (Alex Morcos)
f22ac4a Increase success threshold for fee estimation to 95% (Alex Morcos)
4fe2823 Change wallet and GUI code to use new smart fee estimation calls. (Alex Morcos)
22eca7d Add smart fee estimation functions (Alex Morcos)

1 files changed, 52 insertions, 0 deletions

diff --git a/src/policy/fees.cpp b/src/policy/fees.cpp
index ffe31d194..980ecf10d 100644
--- a/src/policy/fees.cpp
+++ b/src/policy/fees.cpp
@@ -4,6 +4,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include "policy/fees.h"
+#include "policy/policy.h"
 
 #include "amount.h"
 #include "primitives/transaction.h"
@@ -504,6 +505,33 @@ CFeeRate CBlockPolicyEstimator::estimateFee(int confTarget)
     return CFeeRate(median);
 }
 
+CFeeRate CBlockPolicyEstimator::estimateSmartFee(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool)
+{
+    if (answerFoundAtTarget)
+        *answerFoundAtTarget = confTarget;
+    // Return failure if trying to analyze a target we're not tracking
+    if (confTarget <= 0 || (unsigned int)confTarget > feeStats.GetMaxConfirms())
+        return CFeeRate(0);
+
+    double median = -1;
+    while (median < 0 && (unsigned int)confTarget <= feeStats.GetMaxConfirms()) {
+        median = feeStats.EstimateMedianVal(confTarget++, SUFFICIENT_FEETXS, MIN_SUCCESS_PCT, true, nBestSeenHeight);
+    }
+
+    if (answerFoundAtTarget)
+        *answerFoundAtTarget = confTarget - 1;
+
+    // If mempool is limiting txs , return at least the min fee from the mempool
+    CAmount minPoolFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
+    if (minPoolFee > 0 && minPoolFee > median)
+        return CFeeRate(minPoolFee);
+
+    if (median < 0)
+        return CFeeRate(0);
+
+    return CFeeRate(median);
+}
+
 double CBlockPolicyEstimator::estimatePriority(int confTarget)
 {
     // Return failure if trying to analyze a target we're not tracking
@@ -513,6 +541,30 @@ double CBlockPolicyEstimator::estimatePriority(int confTarget)
     return priStats.EstimateMedianVal(confTarget, SUFFICIENT_PRITXS, MIN_SUCCESS_PCT, true, nBestSeenHeight);
 }
 
+double CBlockPolicyEstimator::estimateSmartPriority(int confTarget, int *answerFoundAtTarget, const CTxMemPool& pool)
+{
+    if (answerFoundAtTarget)
+        *answerFoundAtTarget = confTarget;
+    // Return failure if trying to analyze a target we're not tracking
+    if (confTarget <= 0 || (unsigned int)confTarget > priStats.GetMaxConfirms())
+        return -1;
+
+    // If mempool is limiting txs, no priority txs are allowed
+    CAmount minPoolFee = pool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
+    if (minPoolFee > 0)
+        return INF_PRIORITY;
+
+    double median = -1;
+    while (median < 0 && (unsigned int)confTarget <= priStats.GetMaxConfirms()) {
+        median = priStats.EstimateMedianVal(confTarget++, SUFFICIENT_PRITXS, MIN_SUCCESS_PCT, true, nBestSeenHeight);
+    }
+
+    if (answerFoundAtTarget)
+        *answerFoundAtTarget = confTarget - 1;
+
+    return median;
+}
+
 void CBlockPolicyEstimator::Write(CAutoFile& fileout)
 {
     fileout << nBestSeenHeight;