From b5bf22a8eef9a9836c62d57f9dfb8f45463831d1 Mon Sep 17 00:00:00 2001
From: Vladislav Nepogodin <nepogodin.vlad@gmail.com>
Date: Fri, 28 Jan 2022 01:18:49 +0400
Subject: [PATCH] =?UTF-8?q?=E2=99=BB=20=20update=20the=20behaviour=20of=20?=
 =?UTF-8?q?execute=20button?=
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update thread logic
---
 src/kernel.cpp    |  6 +++---
 src/km-window.cpp | 27 +++++++++++++--------------
 src/km-window.hpp |  6 +++---
 3 files changed, 19 insertions(+), 20 deletions(-)

diff --git a/src/kernel.cpp b/src/kernel.cpp
index 85f3732..53c44bc 100644
--- a/src/kernel.cpp
+++ b/src/kernel.cpp
@@ -29,6 +29,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wuseless-cast"
 #pragma GCC diagnostic ignored "-Wsign-conversion"
+#pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
 #endif
 
 #include <QProcess>
@@ -246,9 +247,6 @@ int runCmdTerminal(QString cmd, bool escalate) {
     paramlist << cmd;
 
     proc.start("/usr/lib/cachyos-kernel-manager/terminal-helper", paramlist);
-    proc.waitForStarted(-1);
-    const auto data = proc.readAllStandardError();
-    fprintf(stderr, "%s\n", data.toStdString().c_str());
     proc.waitForFinished(-1);
     return proc.exitCode();
 }
@@ -257,11 +255,13 @@ void Kernel::commit_transaction() noexcept {
     if (!g_kernel_install_list.empty()) {
         const auto& packages_install = utils::make_multiline(g_kernel_install_list, false, " ");
         runCmdTerminal(fmt::format("pacman -S --needed {}", packages_install).c_str(), true);
+        g_kernel_install_list.clear();
     }
 
     if (!g_kernel_removal_list.empty()) {
         const auto& packages_remove = utils::make_multiline(g_kernel_removal_list, false, " ");
         runCmdTerminal(fmt::format("pacman -Rsn {}", packages_remove).c_str(), true);
+        g_kernel_removal_list.clear();
     }
 }
 #endif
diff --git a/src/km-window.cpp b/src/km-window.cpp
index b55f2b7..ba68660 100644
--- a/src/km-window.cpp
+++ b/src/km-window.cpp
@@ -453,20 +453,26 @@ MainWindow::MainWindow(QWidget* parent)
     // Create worker thread
     m_worker = new Work([&]() {
         while (m_running) {
+            m_ui->ok->setEnabled(false);
             install_packages(m_handle, m_kernels, m_ui->list->model());
             remove_packages(m_handle, m_kernels, m_ui->list->model());
 
 #ifdef PKG_DUMMY_IMPL
             Kernel::commit_transaction();
-#endif
+#else
             m_last_percent = 100;
             m_last_text    = "Done";
+#endif
 
             m_running = false;
             m_ui->ok->setDisabled(false);
         }
     });
 
+    m_worker->moveToThread(m_worker_th);
+    // name to appear in ps, task manager, etc.
+    m_worker_th->setObjectName("WorkerThread");
+
     static constexpr auto TIMEOUT_MS = 50;
 
     // Set update timer
@@ -532,6 +538,10 @@ MainWindow::MainWindow(QWidget* parent)
     connect(m_ui->cancel, SIGNAL(clicked()), this, SLOT(on_cancel()));
     connect(m_ui->ok, SIGNAL(clicked()), this, SLOT(on_execute()));
 
+    // Connect worker thread signals
+    connect(m_worker_th, SIGNAL(finished()), m_worker, SLOT(deleteLater()));
+    connect(m_worker_th, SIGNAL(started()), m_worker, SLOT(doHeavyCaclulations()), Qt::QueuedConnection);
+
     // Wait for async function to finish
     a2.wait();
 }
@@ -564,19 +574,8 @@ void Work::doHeavyCaclulations() {
 }
 
 void MainWindow::on_execute() noexcept {
-    m_running = false;
-    if (m_worker_th->isRunning()) {
-        m_worker_th->terminate();
-        m_worker_th->wait(1500);
-    }
+    if (m_running)
+        return;
     m_running = true;
-    m_ui->ok->setEnabled(false);
-    m_worker->moveToThread(m_worker_th);
-    // name to appear in ps, task manager, etc.
-    m_worker_th->setObjectName("WorkerThread");
-
-    connect(m_worker_th, SIGNAL(finished()), m_worker, SLOT(deleteLater()));
-    connect(m_worker_th, SIGNAL(started()), m_worker, SLOT(doHeavyCaclulations()), Qt::QueuedConnection);
-
     m_worker_th->start();
 }
diff --git a/src/km-window.hpp b/src/km-window.hpp
index 02a9d7a..53d9ea8 100644
--- a/src/km-window.hpp
+++ b/src/km-window.hpp
@@ -74,7 +74,7 @@ class MainWindow final : public QMainWindow {
     Q_DISABLE_COPY_MOVE(MainWindow)
  public:
     explicit MainWindow(QWidget* parent = nullptr);
-    ~MainWindow() override = default;
+    virtual ~MainWindow() = default;
 
  private slots:
     void on_cancel() noexcept;
@@ -90,9 +90,9 @@ class MainWindow final : public QMainWindow {
     std::mutex m_mutex{};
 
     QThread* m_worker_th = new QThread(this);
-    Work* m_worker;
+    Work* m_worker{nullptr};
 
-    alpm_errno_t m_err;
+    alpm_errno_t m_err{};
     alpm_handle_t* m_handle              = alpm_initialize("/", "/var/lib/pacman/", &m_err);
     std::vector<Kernel> m_kernels        = Kernel::get_kernels(m_handle);
     std::unique_ptr<Ui::MainWindow> m_ui = std::make_unique<Ui::MainWindow>();