Merge #14250: qt: Remove redundant stopThread() and stopExecutor() signals

24313fb Remove redundant stopExecutor() signal (Hennadii Stepanov)
1c0e0a5 Remove redundant stopThread() signal (Hennadii Stepanov)

Pull request description:

  The `QThread::finished` signal do this work.

Tree-SHA512: 1afce23d30232276d50c3af5af79d83b88e390a2b71f7df585cc1079585d330447d179bbc34c0a89599beb2da035dfd5b9ce23238171490825cabc3a19ae6e67

Author: laanwj

src/qt/bitcoin.cpp

@@ -212,7 +212,7 @@ BitcoinApplication::~BitcoinApplication()
     if(coreThread)
     {
         qDebug() << __func__ << ": Stopping thread";
-        Q_EMIT stopThread();
+        coreThread->quit();
         coreThread->wait();
         qDebug() << __func__ << ": Stopped thread";
     }
@@ -279,8 +279,7 @@ void BitcoinApplication::startThread()
     connect(this, &BitcoinApplication::requestedInitialize, executor, &BitcoinCore::initialize);
     connect(this, &BitcoinApplication::requestedShutdown, executor, &BitcoinCore::shutdown);
     /*  make sure executor object is deleted in its own thread */
-    connect(this, &BitcoinApplication::stopThread, executor, &QObject::deleteLater);
-    connect(this, &BitcoinApplication::stopThread, coreThread, &QThread::quit);
+    connect(coreThread, &QThread::finished, executor, &QObject::deleteLater);
 
     coreThread->start();
 }

src/qt/bitcoin.h

@@ -99,7 +99,6 @@ public Q_SLOTS:
 Q_SIGNALS:
     void requestedInitialize();
     void requestedShutdown();
-    void stopThread();
     void splashFinished();
     void windowShown(BitcoinGUI* window);
 

src/qt/intro.cpp

@@ -156,7 +156,7 @@ Intro::~Intro()
 {
     delete ui;
     /* Ensure thread is finished before it is deleted */
-    Q_EMIT stopThread();
+    thread->quit();
     thread->wait();
 }
 
@@ -311,8 +311,7 @@ void Intro::startThread()
     connect(executor, &FreespaceChecker::reply, this, &Intro::setStatus);
     connect(this, &Intro::requestCheck, executor, &FreespaceChecker::check);
     /*  make sure executor object is deleted in its own thread */
-    connect(this, &Intro::stopThread, executor, &QObject::deleteLater);
-    connect(this, &Intro::stopThread, thread, &QThread::quit);
+    connect(thread, &QThread::finished, executor, &QObject::deleteLater);
 
     thread->start();
 }

src/qt/intro.h

@@ -55,7 +55,6 @@ class Intro : public QDialog
 
 Q_SIGNALS:
     void requestCheck();
-    void stopThread();
 
 public Q_SLOTS:
     void setStatus(int status, const QString &message, quint64 bytesAvailable);

src/qt/rpcconsole.cpp

@@ -688,8 +688,7 @@ void RPCConsole::setClientModel(ClientModel *model)
     }
     if (!model) {
         // Client model is being set to 0, this means shutdown() is about to be called.
-        // Make sure we clean up the executor thread
-        Q_EMIT stopExecutor();
+        thread.quit();
         thread.wait();
     }
 }
@@ -975,11 +974,8 @@ void RPCConsole::startExecutor()
     // Requests from this object must go to executor
     connect(this, &RPCConsole::cmdRequest, executor, &RPCExecutor::request);
 
-    // On stopExecutor signal
-    // - quit the Qt event loop in the execution thread
-    connect(this, &RPCConsole::stopExecutor, &thread, &QThread::quit);
-    // - queue executor for deletion (in execution thread)
-    connect(&thread, &QThread::finished, executor, &RPCExecutor::deleteLater, Qt::DirectConnection);
+    // Make sure executor object is deleted in its own thread
+    connect(&thread, &QThread::finished, executor, &RPCExecutor::deleteLater);
 
     // Default implementation of QThread::run() simply spins up an event loop in the thread,
     // which is what we want.

src/qt/rpcconsole.h

@@ -132,7 +132,6 @@ public Q_SLOTS:
 
 Q_SIGNALS:
     // For RPC command executor
-    void stopExecutor();
     void cmdRequest(const QString &command, const WalletModel* wallet_model);
 
 private: