Reduce cs_main lock accumulation during GUI startup

Author: jonasschnelli

src/qt/bitcoin.cpp

@@ -81,6 +81,7 @@ static void RegisterMetaTypes()
 
     qRegisterMetaType<std::function<void()>>("std::function<void()>");
     qRegisterMetaType<QMessageBox::Icon>("QMessageBox::Icon");
+    qRegisterMetaType<interfaces::BlockAndHeaderTipInfo>("interfaces::BlockAndHeaderTipInfo");
 }
 
 static QString GetLangTerritory()
@@ -164,8 +165,9 @@ void BitcoinCore::initialize()
     {
         qDebug() << __func__ << ": Running initialization in thread";
         util::ThreadRename("qt-init");
-        bool rv = m_node.appInitMain();
-        Q_EMIT initializeResult(rv);
+        interfaces::BlockAndHeaderTipInfo tip_info;
+        bool rv = m_node.appInitMain(&tip_info);
+        Q_EMIT initializeResult(rv, tip_info);
     } catch (const std::exception& e) {
         handleRunawayException(&e);
     } catch (...) {
@@ -342,7 +344,7 @@ void BitcoinApplication::requestShutdown()
     Q_EMIT requestedShutdown();
 }
 
-void BitcoinApplication::initializeResult(bool success)
+void BitcoinApplication::initializeResult(bool success, interfaces::BlockAndHeaderTipInfo tip_info)
 {
     qDebug() << __func__ << ": Initialization result: " << success;
     // Set exit result.
@@ -352,7 +354,7 @@ void BitcoinApplication::initializeResult(bool success)
         // Log this only after AppInitMain finishes, as then logging setup is guaranteed complete
         qInfo() << "Platform customization:" << platformStyle->getName();
         clientModel = new ClientModel(m_node, optionsModel);
-        window->setClientModel(clientModel);
+        window->setClientModel(clientModel, &tip_info);
 #ifdef ENABLE_WALLET
         if (WalletModel::isWalletEnabled()) {
             m_wallet_controller = new WalletController(*clientModel, platformStyle, this);

src/qt/bitcoin.h

@@ -12,6 +12,8 @@
 #include <QApplication>
 #include <memory>
 
+#include <interfaces/node.h>
+
 class BitcoinGUI;
 class ClientModel;
 class NetworkStyle;
@@ -21,10 +23,6 @@ class PlatformStyle;
 class WalletController;
 class WalletModel;
 
-namespace interfaces {
-class Handler;
-class Node;
-} // namespace interfaces
 
 /** Class encapsulating Bitcoin Core startup and shutdown.
  * Allows running startup and shutdown in a different thread from the UI thread.
@@ -40,7 +38,7 @@ public Q_SLOTS:
     void shutdown();
 
 Q_SIGNALS:
-    void initializeResult(bool success);
+    void initializeResult(bool success, interfaces::BlockAndHeaderTipInfo tip_info);
     void shutdownResult();
     void runawayException(const QString &message);
 
@@ -91,7 +89,7 @@ class BitcoinApplication: public QApplication
     void setupPlatformStyle();
 
 public Q_SLOTS:
-    void initializeResult(bool success);
+    void initializeResult(bool success, interfaces::BlockAndHeaderTipInfo tip_info);
     void shutdownResult();
     /// Handle runaway exceptions. Shows a message box with the problem and quits the program.
     void handleRunawayException(const QString &message);

src/qt/bitcoingui.cpp

@@ -574,7 +574,7 @@ void BitcoinGUI::createToolBars()
     }
 }
 
-void BitcoinGUI::setClientModel(ClientModel *_clientModel)
+void BitcoinGUI::setClientModel(ClientModel *_clientModel, interfaces::BlockAndHeaderTipInfo* tip_info)
 {
     this->clientModel = _clientModel;
     if(_clientModel)
@@ -588,8 +588,8 @@ void BitcoinGUI::setClientModel(ClientModel *_clientModel)
         connect(_clientModel, &ClientModel::numConnectionsChanged, this, &BitcoinGUI::setNumConnections);
         connect(_clientModel, &ClientModel::networkActiveChanged, this, &BitcoinGUI::setNetworkActive);
 
-        modalOverlay->setKnownBestHeight(_clientModel->getHeaderTipHeight(), QDateTime::fromTime_t(_clientModel->getHeaderTipTime()));
-        setNumBlocks(m_node.getNumBlocks(), QDateTime::fromTime_t(m_node.getLastBlockTime()), m_node.getVerificationProgress(), false, SynchronizationState::INIT_DOWNLOAD);
+        modalOverlay->setKnownBestHeight(tip_info->header_height, QDateTime::fromTime_t(tip_info->header_time));
+        setNumBlocks(tip_info->block_height, QDateTime::fromTime_t(tip_info->block_time), tip_info->verification_progress, false, SynchronizationState::INIT_DOWNLOAD);
         connect(_clientModel, &ClientModel::numBlocksChanged, this, &BitcoinGUI::setNumBlocks);
 
         // Receive and report messages from client model
@@ -600,7 +600,7 @@ void BitcoinGUI::setClientModel(ClientModel *_clientModel)
         // Show progress dialog
         connect(_clientModel, &ClientModel::showProgress, this, &BitcoinGUI::showProgress);
 
-        rpcConsole->setClientModel(_clientModel);
+        rpcConsole->setClientModel(_clientModel, tip_info->block_height, tip_info->block_time, tip_info->verification_progress);
 
         updateProxyIcon();
 

src/qt/bitcoingui.h

@@ -43,6 +43,7 @@ enum class SynchronizationState;
 namespace interfaces {
 class Handler;
 class Node;
+struct BlockAndHeaderTipInfo;
 }
 
 QT_BEGIN_NAMESPACE
@@ -75,7 +76,7 @@ class BitcoinGUI : public QMainWindow
     /** Set the client model.
         The client model represents the part of the core that communicates with the P2P network, and is wallet-agnostic.
     */
-    void setClientModel(ClientModel *clientModel);
+    void setClientModel(ClientModel *clientModel = nullptr, interfaces::BlockAndHeaderTipInfo* tip_info = nullptr);
 #ifdef ENABLE_WALLET
     void setWalletController(WalletController* wallet_controller);
 #endif

src/qt/test/apptests.cpp

@@ -67,6 +67,7 @@ void AppTests::appTests()
         return GetDataDir() / "blocks";
     }());
 
+    qRegisterMetaType<interfaces::BlockAndHeaderTipInfo>("interfaces::BlockAndHeaderTipInfo");
     m_app.parameterSetup();
     m_app.createOptionsModel(true /* reset settings */);
     QScopedPointer<const NetworkStyle> style(NetworkStyle::instantiate(Params().NetworkIDString()));