From 3c709aa69d5bb5a1564c339a0e6a16bac8f02c98 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Wed, 4 Mar 2020 21:35:08 +0200
Subject: [PATCH] refactor: Remove Node::getReindex() call from GUI

---
 src/qt/clientmodel.cpp | 35 ++++++++++++++---------------------
 1 file changed, 14 insertions(+), 21 deletions(-)

diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index abda9803840..a6bf5e10aaa 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -237,17 +237,6 @@ static void BannedListChanged(ClientModel *clientmodel)
 
 static void BlockTipChanged(ClientModel* clientmodel, SynchronizationState sync_state, int height, int64_t blockTime, double verificationProgress, bool fHeader)
 {
-    const bool initialSync = sync_state != SynchronizationState::POST_INIT;
-
-    // lock free async UI updates in case we have a new block tip
-    // during initial sync, only update the UI if the last update
-    // was > 250ms (MODEL_UPDATE_DELAY) ago
-    int64_t now = 0;
-    if (initialSync)
-        now = GetTimeMillis();
-
-    int64_t& nLastUpdateNotification = fHeader ? nLastHeaderTipUpdateNotification : nLastBlockTipUpdateNotification;
-
     if (fHeader) {
         // cache best headers time and height to reduce future cs_main locks
         clientmodel->cachedBestHeaderHeight = height;
@@ -256,17 +245,21 @@ static void BlockTipChanged(ClientModel* clientmodel, SynchronizationState sync_
         clientmodel->m_cached_num_blocks = height;
     }
 
-    // During initial sync, block notifications, and header notifications from reindexing are both throttled.
-    if (!initialSync || (fHeader && !clientmodel->node().getReindex()) || now - nLastUpdateNotification > MODEL_UPDATE_DELAY) {
-        //pass an async signal to the UI thread
-        bool invoked = QMetaObject::invokeMethod(clientmodel, "numBlocksChanged", Qt::QueuedConnection,
-                                  Q_ARG(int, height),
-                                  Q_ARG(QDateTime, QDateTime::fromTime_t(blockTime)),
-                                  Q_ARG(double, verificationProgress),
-                                  Q_ARG(bool, fHeader));
-        assert(invoked);
-        nLastUpdateNotification = now;
+    // Throttle GUI notifications about (a) blocks during initial sync, and (b) both blocks and headers during reindex.
+    const bool throttle = (sync_state != SynchronizationState::POST_INIT && !fHeader) || sync_state == SynchronizationState::INIT_REINDEX;
+    const int64_t now = throttle ? GetTimeMillis() : 0;
+    int64_t& nLastUpdateNotification = fHeader ? nLastHeaderTipUpdateNotification : nLastBlockTipUpdateNotification;
+    if (throttle && now < nLastUpdateNotification + MODEL_UPDATE_DELAY) {
+        return;
     }
+
+    bool invoked = QMetaObject::invokeMethod(clientmodel, "numBlocksChanged", Qt::QueuedConnection,
+        Q_ARG(int, height),
+        Q_ARG(QDateTime, QDateTime::fromTime_t(blockTime)),
+        Q_ARG(double, verificationProgress),
+        Q_ARG(bool, fHeader));
+    assert(invoked);
+    nLastUpdateNotification = now;
 }
 
 void ClientModel::subscribeToCoreSignals()