Merge #18260: refactor: Fix implicit value conversion in formatPingTime

1891245 refactor: Cast ping values to double before output (Ben Woosley)
7a810b1 refactor: Convert ping wait time from double to int64_t (Ben Woosley)
e6fc63e refactor: Convert min ping time from double to int64_t (Ben Woosley)
b054c46 refactor: Convert ping time from double to int64_t (Ben Woosley)

Pull request description:

  Alternative to #18252, see motivation there.

  This changes `CNodeStats` to handle ping timestamps as their original incoming usec `int64_t` values until the time they need to be displayed.

ACKs for top commit:
  vasild:
    ACK 1891245
  practicalswift:
    ACK 1891245 -- patch looks correct
  promag:
    ACK 1891245, added cast to double and also braces.

Tree-SHA512: 7cfcba941d9751b522b8c512c25da493338b444637bd0bb711b152d7d86b431ca0968956be3c844ee9dbfea25edab44a0de2afa44f2c9c0bf5b8df53eba66272

Author: MarcoFalke

src/net.cpp

@@ -555,9 +555,9 @@ void CNode::copyStats(CNodeStats &stats, const std::vector<bool> &m_asmap)
     }
 
     // Raw ping time is in microseconds, but show it to user as whole seconds (Bitcoin users should be well used to small numbers with many decimal places by now :)
-    stats.dPingTime = (((double)nPingUsecTime) / 1e6);
-    stats.dMinPing  = (((double)nMinPingUsecTime) / 1e6);
-    stats.dPingWait = (((double)nPingUsecWait) / 1e6);
+    stats.m_ping_usec = nPingUsecTime;
+    stats.m_min_ping_usec  = nMinPingUsecTime;
+    stats.m_ping_wait_usec = nPingUsecWait;
 
     // Leave string empty if addrLocal invalid (not filled in yet)
     CService addrLocalUnlocked = GetAddrLocal();

src/net.h

@@ -596,9 +596,9 @@ class CNodeStats
     mapMsgCmdSize mapRecvBytesPerMsgCmd;
     NetPermissionFlags m_permissionFlags;
     bool m_legacyWhitelisted;
-    double dPingTime;
-    double dPingWait;
-    double dMinPing;
+    int64_t m_ping_usec;
+    int64_t m_ping_wait_usec;
+    int64_t m_min_ping_usec;
     CAmount minFeeFilter;
     // Our address, as reported by the peer
     std::string addrLocal;

src/qt/guiutil.cpp

@@ -773,9 +773,9 @@ QString formatServicesStr(quint64 mask)
         return QObject::tr("None");
 }
 
-QString formatPingTime(double dPingTime)
+QString formatPingTime(int64_t ping_usec)
 {
-    return (dPingTime == std::numeric_limits<int64_t>::max()/1e6 || dPingTime == 0) ? QObject::tr("N/A") : QString(QObject::tr("%1 ms")).arg(QString::number((int)(dPingTime * 1000), 10));
+    return (ping_usec == std::numeric_limits<int64_t>::max() || ping_usec == 0) ? QObject::tr("N/A") : QString(QObject::tr("%1 ms")).arg(QString::number((int)(ping_usec / 1000), 10));
 }
 
 QString formatTimeOffset(int64_t nTimeOffset)

src/qt/guiutil.h

@@ -202,8 +202,8 @@ namespace GUIUtil
     /* Format CNodeStats.nServices bitmask into a user-readable string */
     QString formatServicesStr(quint64 mask);
 
-    /* Format a CNodeCombinedStats.dPingTime into a user-readable string or display N/A, if 0*/
-    QString formatPingTime(double dPingTime);
+    /* Format a CNodeStats.m_ping_usec into a user-readable string or display N/A, if 0*/
+    QString formatPingTime(int64_t ping_usec);
 
     /* Format a CNodeCombinedStats.nTimeOffset into a user-readable string. */
     QString formatTimeOffset(int64_t nTimeOffset);

src/qt/peertablemodel.cpp

@@ -32,7 +32,7 @@ bool NodeLessThan::operator()(const CNodeCombinedStats &left, const CNodeCombine
     case PeerTableModel::Subversion:
         return pLeft->cleanSubVer.compare(pRight->cleanSubVer) < 0;
     case PeerTableModel::Ping:
-        return pLeft->dMinPing < pRight->dMinPing;
+        return pLeft->m_min_ping_usec < pRight->m_min_ping_usec;
     case PeerTableModel::Sent:
         return pLeft->nSendBytes < pRight->nSendBytes;
     case PeerTableModel::Received:
@@ -161,7 +161,7 @@ QVariant PeerTableModel::data(const QModelIndex &index, int role) const
         case Subversion:
             return QString::fromStdString(rec->nodeStats.cleanSubVer);
         case Ping:
-            return GUIUtil::formatPingTime(rec->nodeStats.dMinPing);
+            return GUIUtil::formatPingTime(rec->nodeStats.m_min_ping_usec);
         case Sent:
             return GUIUtil::formatBytes(rec->nodeStats.nSendBytes);
         case Received:

src/qt/rpcconsole.cpp

@@ -1109,9 +1109,9 @@ void RPCConsole::updateNodeDetail(const CNodeCombinedStats *stats)
     ui->peerBytesSent->setText(GUIUtil::formatBytes(stats->nodeStats.nSendBytes));
     ui->peerBytesRecv->setText(GUIUtil::formatBytes(stats->nodeStats.nRecvBytes));
     ui->peerConnTime->setText(GUIUtil::formatDurationStr(GetSystemTimeInSeconds() - stats->nodeStats.nTimeConnected));
-    ui->peerPingTime->setText(GUIUtil::formatPingTime(stats->nodeStats.dPingTime));
-    ui->peerPingWait->setText(GUIUtil::formatPingTime(stats->nodeStats.dPingWait));
-    ui->peerMinPing->setText(GUIUtil::formatPingTime(stats->nodeStats.dMinPing));
+    ui->peerPingTime->setText(GUIUtil::formatPingTime(stats->nodeStats.m_ping_usec));
+    ui->peerPingWait->setText(GUIUtil::formatPingTime(stats->nodeStats.m_ping_wait_usec));
+    ui->peerMinPing->setText(GUIUtil::formatPingTime(stats->nodeStats.m_min_ping_usec));
     ui->timeoffset->setText(GUIUtil::formatTimeOffset(stats->nodeStats.nTimeOffset));
     ui->peerVersion->setText(QString("%1").arg(QString::number(stats->nodeStats.nVersion)));
     ui->peerSubversion->setText(QString::fromStdString(stats->nodeStats.cleanSubVer));

src/rpc/net.cpp

@@ -168,12 +168,15 @@ static UniValue getpeerinfo(const JSONRPCRequest& request)
         obj.pushKV("bytesrecv", stats.nRecvBytes);
         obj.pushKV("conntime", stats.nTimeConnected);
         obj.pushKV("timeoffset", stats.nTimeOffset);
-        if (stats.dPingTime > 0.0)
-            obj.pushKV("pingtime", stats.dPingTime);
-        if (stats.dMinPing < static_cast<double>(std::numeric_limits<int64_t>::max())/1e6)
-            obj.pushKV("minping", stats.dMinPing);
-        if (stats.dPingWait > 0.0)
-            obj.pushKV("pingwait", stats.dPingWait);
+        if (stats.m_ping_usec > 0) {
+            obj.pushKV("pingtime", ((double)stats.m_ping_usec) / 1e6);
+        }
+        if (stats.m_min_ping_usec < std::numeric_limits<int64_t>::max()) {
+            obj.pushKV("minping", ((double)stats.m_min_ping_usec) / 1e6);
+        }
+        if (stats.m_ping_wait_usec > 0) {
+            obj.pushKV("pingwait", ((double)stats.m_ping_wait_usec) / 1e6);
+        }
         obj.pushKV("version", stats.nVersion);
         // Use the sanitized form of subver here, to avoid tricksy remote peers from
         // corrupting or modifying the JSON output by putting special characters in