webview jank

but it's somehow not possible to restart jvm after destruction, so it has to be redone anyway

launcher/CMakeLists.txt

@@ -28,6 +28,7 @@ if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
     add_link_options(-O3)
 endif ()
 
+add_subdirectory(utils)
 add_subdirectory(libjvm_wrapper)
 add_subdirectory(backend)
 add_subdirectory(gui)

launcher/backend/CMakeLists.txt

@@ -6,4 +6,4 @@ add_library(backend
 target_include_directories(backend PRIVATE include)
 target_include_directories(backend PUBLIC include_public)
 
-target_link_libraries(backend PUBLIC libjvm_wrapper)
+target_link_libraries(backend PUBLIC libjvm_wrapper utils)

launcher/backend/include_public/DhfsInstance.hpp

@@ -6,6 +6,8 @@
 #define DHFSINSTANCE_HPP
 
 #include <jni.h>
+#include <string>
+#include <vector>
 
 enum class DhfsInstanceState {
     RUNNING,
@@ -20,7 +22,7 @@ public:
 
     DhfsInstanceState state();
 
-    void start();
+    void start(const std::string& mount_path, const std::vector<std::string>& extra_options);
 
     void stop();
 
@@ -28,7 +30,7 @@ private:
     DhfsInstanceState _state = DhfsInstanceState::STOPPED;
 
     JavaVM* _jvm = nullptr;
-    JNIEnv *_env = nullptr;
+    JNIEnv* _env = nullptr;
 };
 
 

launcher/backend/src/DhfsInstance.cpp

@@ -7,6 +7,7 @@
 #include <stdexcept>
 #include <vector>
 
+#include "Exception.h"
 #include "LibjvmWrapper.hpp"
 
 DhfsInstance::DhfsInstance() {
@@ -16,9 +17,10 @@ DhfsInstance::~DhfsInstance() {
 }
 
 DhfsInstanceState DhfsInstance::state() {
+    return _state;
 }
 
-void DhfsInstance::start() {
+void DhfsInstance::start(const std::string& mount_path, const std::vector<std::string>& extra_options) {
     switch (_state) {
         case DhfsInstanceState::RUNNING:
             return;
@@ -27,15 +29,22 @@ void DhfsInstance::start() {
         default:
             throw std::runtime_error("Unknown DhfsInstanceState");
     }
+    _state = DhfsInstanceState::RUNNING;
 
     JavaVMInitArgs args;
     std::vector<JavaVMOption> options;
+    for (const auto& option: extra_options) {
+        options.emplace_back((char*) option.c_str(), nullptr);
+    }
+    std::string mount_option = "-Ddhfs.fuse.root=";
+    mount_option += mount_path;
+    options.emplace_back((char*) mount_option.c_str(), nullptr);
     args.version = JNI_VERSION_21;
-    args.nOptions = 0;
+    args.nOptions = options.size();
     args.options = options.data();
     args.ignoreUnrecognized = false;
 
-    LibjvmWrapper::instance().JNI_CreateJavaVM(&_jvm, (void**) &_env, &args);
+    LibjvmWrapper::instance().get_JNI_CreateJavaVM()(&_jvm, (void**) &_env, &args);
 }
 
 void DhfsInstance::stop() {
@@ -47,4 +56,13 @@ void DhfsInstance::stop() {
         default:
             throw std::runtime_error("Unknown DhfsInstanceState");
     }
+
+    if (_jvm == nullptr)
+        throw Exception("JVM not running");
+
+    JNIEnv* env;
+    _jvm->AttachCurrentThread((void**) &env, nullptr);
+    _jvm->DestroyJavaVM();
+    _jvm = nullptr;
+    _state = DhfsInstanceState::STOPPED;
 }

launcher/gui/CMakeLists.txt

@@ -1,5 +1,5 @@
 
-find_package(wxWidgets REQUIRED COMPONENTS net core base)
+find_package(wxWidgets REQUIRED COMPONENTS net core base webview)
 if (wxWidgets_USE_FILE) # not defined in CONFIG mode
     include(${wxWidgets_USE_FILE})
 endif ()
@@ -11,4 +11,4 @@ add_executable(launcher
 )
 
 target_link_libraries(launcher ${wxWidgets_LIBRARIES})
-target_link_libraries(launcher backend)
+target_link_libraries(launcher backend utils)

launcher/gui/src/GLauncherApp.cpp

@@ -30,9 +30,9 @@ MainFrame::MainFrame( wxWindow* parent, wxWindowID id, const wxString& title, co
 	gbSizer1->SetFlexibleDirection( wxBOTH );
 	gbSizer1->SetNonFlexibleGrowMode( wxFLEX_GROWMODE_SPECIFIED );
 
-	m_staticText1 = new wxStaticText( sbSizer4->GetStaticBox(), wxID_ANY, _("Running"), wxDefaultPosition, wxDefaultSize, 0 );
-	m_staticText1->Wrap( -1 );
-	gbSizer1->Add( m_staticText1, wxGBPosition( 0, 0 ), wxGBSpan( 1, 1 ), wxALL, 5 );
+	m_statusText = new wxStaticText( sbSizer4->GetStaticBox(), wxID_ANY, _("Running"), wxDefaultPosition, wxDefaultSize, 0 );
+	m_statusText->Wrap( -1 );
+	gbSizer1->Add( m_statusText, wxGBPosition( 0, 0 ), wxGBSpan( 1, 1 ), wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 
 	m_startStopButton = new wxButton( sbSizer4->GetStaticBox(), wxID_ANY, _("Start"), wxDefaultPosition, wxDefaultSize, 0 );
 	gbSizer1->Add( m_startStopButton, wxGBPosition( 0, 1 ), wxGBSpan( 1, 1 ), wxALL, 5 );
@@ -41,23 +41,86 @@ MainFrame::MainFrame( wxWindow* parent, wxWindowID id, const wxString& title, co
 	sbSizer4->Add( gbSizer1, 1, wxEXPAND, 5 );
 
 
-	bSizer2->Add( sbSizer4, 1, wxEXPAND, 5 );
+	bSizer2->Add( sbSizer4, 1, wxALL|wxEXPAND, 5 );
 
 	wxStaticBoxSizer* sbSizer6;
 	sbSizer6 = new wxStaticBoxSizer( new wxStaticBox( m_panel1, wxID_ANY, _("Statistics") ), wxVERTICAL );
 
 
-	bSizer2->Add( sbSizer6, 1, wxEXPAND, 5 );
+	bSizer2->Add( sbSizer6, 1, wxALL|wxEXPAND, 5 );
 
 
 	m_panel1->SetSizer( bSizer2 );
 	m_panel1->Layout();
 	bSizer2->Fit( m_panel1 );
-	m_notebook1->AddPage( m_panel1, _("Info"), true );
+	m_notebook1->AddPage( m_panel1, _("Info"), false );
 	m_panel3 = new wxPanel( m_notebook1, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL );
 	m_notebook1->AddPage( m_panel3, _("Logs"), false );
 	m_panel2 = new wxPanel( m_notebook1, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL );
+	wxBoxSizer* bSizer5;
+	bSizer5 = new wxBoxSizer( wxVERTICAL );
+
+	wxStaticBoxSizer* sbSizer3;
+	sbSizer3 = new wxStaticBoxSizer( new wxStaticBox( m_panel2, wxID_ANY, _("JVM") ), wxVERTICAL );
+
+	wxGridBagSizer* gbSizer2;
+	gbSizer2 = new wxGridBagSizer( 0, 0 );
+	gbSizer2->SetFlexibleDirection( wxBOTH );
+	gbSizer2->SetNonFlexibleGrowMode( wxFLEX_GROWMODE_SPECIFIED );
+
+	m_button2 = new wxButton( sbSizer3->GetStaticBox(), wxID_ANY, _("Reset"), wxDefaultPosition, wxDefaultSize, 0 );
+	gbSizer2->Add( m_button2, wxGBPosition( 0, 3 ), wxGBSpan( 1, 1 ), wxALL, 5 );
+
+
+	gbSizer2->Add( 50, 0, wxGBPosition( 0, 2 ), wxGBSpan( 1, 1 ), wxEXPAND, 5 );
+
+	m_javaHomeDirPicker = new wxDirPickerCtrl( sbSizer3->GetStaticBox(), wxID_ANY, wxEmptyString, _("Select a folder"), wxDefaultPosition, wxDefaultSize, wxDIRP_DEFAULT_STYLE|wxDIRP_USE_TEXTCTRL );
+	gbSizer2->Add( m_javaHomeDirPicker, wxGBPosition( 0, 1 ), wxGBSpan( 1, 1 ), wxALL|wxEXPAND, 5 );
+
+	m_staticText2 = new wxStaticText( sbSizer3->GetStaticBox(), wxID_ANY, _("Java Home"), wxDefaultPosition, wxDefaultSize, 0 );
+	m_staticText2->Wrap( -1 );
+	gbSizer2->Add( m_staticText2, wxGBPosition( 0, 0 ), wxGBSpan( 1, 1 ), wxALIGN_CENTER_VERTICAL|wxALL, 5 );
+
+
+	gbSizer2->AddGrowableCol( 1 );
+
+	sbSizer3->Add( gbSizer2, 1, wxEXPAND, 5 );
+
+
+	bSizer5->Add( sbSizer3, 1, wxALL|wxEXPAND|wxFIXED_MINSIZE, 5 );
+
+	wxStaticBoxSizer* sbSizer41;
+	sbSizer41 = new wxStaticBoxSizer( new wxStaticBox( m_panel2, wxID_ANY, _("Paths") ), wxVERTICAL );
+
+	wxGridBagSizer* gbSizer3;
+	gbSizer3 = new wxGridBagSizer( 0, 0 );
+	gbSizer3->SetFlexibleDirection( wxBOTH );
+	gbSizer3->SetNonFlexibleGrowMode( wxFLEX_GROWMODE_SPECIFIED );
+
+	m_staticText6 = new wxStaticText( sbSizer41->GetStaticBox(), wxID_ANY, _("Mount path"), wxDefaultPosition, wxDefaultSize, 0 );
+	m_staticText6->Wrap( -1 );
+	gbSizer3->Add( m_staticText6, wxGBPosition( 0, 0 ), wxGBSpan( 1, 1 ), wxALIGN_CENTER_VERTICAL|wxALL, 5 );
+
+	m_mountPathDirPicker = new wxDirPickerCtrl( sbSizer41->GetStaticBox(), wxID_ANY, wxEmptyString, _("Select a folder"), wxDefaultPosition, wxDefaultSize, wxDIRP_DEFAULT_STYLE|wxDIRP_USE_TEXTCTRL );
+	gbSizer3->Add( m_mountPathDirPicker, wxGBPosition( 0, 1 ), wxGBSpan( 1, 1 ), wxALL|wxEXPAND, 5 );
+
+
+	gbSizer3->AddGrowableCol( 1 );
+
+	sbSizer41->Add( gbSizer3, 1, wxEXPAND, 5 );
+
+
+	bSizer5->Add( sbSizer41, 1, wxALL|wxEXPAND, 5 );
+
+
+	m_panel2->SetSizer( bSizer5 );
+	m_panel2->Layout();
+	bSizer5->Fit( m_panel2 );
 	m_notebook1->AddPage( m_panel2, _("Settings"), false );
+	m_panel4 = new wxPanel( m_notebook1, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL );
+	m_notebook1->AddPage( m_panel4, _("Advanced Settings"), false );
+	m_panel5 = new wxPanel( m_notebook1, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL );
+	m_notebook1->AddPage( m_panel5, _("a page"), true );
 
 	bSizer3->Add( m_notebook1, 1, wxALL|wxEXPAND, 5 );
 
@@ -69,6 +132,8 @@ MainFrame::MainFrame( wxWindow* parent, wxWindowID id, const wxString& title, co
 
 	// Connect Events
 	m_startStopButton->Connect( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler( MainFrame::OnStartStopButtonClick ), NULL, this );
+	m_javaHomeDirPicker->Connect( wxEVT_COMMAND_DIRPICKER_CHANGED, wxFileDirPickerEventHandler( MainFrame::OnJavaHomeChanged ), NULL, this );
+	m_mountPathDirPicker->Connect( wxEVT_COMMAND_DIRPICKER_CHANGED, wxFileDirPickerEventHandler( MainFrame::OnMountPathChanged ), NULL, this );
 }
 
 MainFrame::~MainFrame()

launcher/gui/src/GLauncherApp.h

@@ -25,6 +25,7 @@
 #include <wx/sizer.h>
 #include <wx/statbox.h>
 #include <wx/panel.h>
+#include <wx/filepicker.h>
 #include <wx/notebook.h>
 #include <wx/frame.h>
 
@@ -41,18 +42,27 @@ class MainFrame : public wxFrame
 		wxStatusBar* m_statusBar1;
 		wxNotebook* m_notebook1;
 		wxPanel* m_panel1;
-		wxStaticText* m_staticText1;
+		wxStaticText* m_statusText;
 		wxButton* m_startStopButton;
 		wxPanel* m_panel3;
 		wxPanel* m_panel2;
+		wxButton* m_button2;
+		wxDirPickerCtrl* m_javaHomeDirPicker;
+		wxStaticText* m_staticText2;
+		wxStaticText* m_staticText6;
+		wxDirPickerCtrl* m_mountPathDirPicker;
+		wxPanel* m_panel4;
+		wxPanel* m_panel5;
 
 		// Virtual event handlers, override them in your derived class
 		virtual void OnStartStopButtonClick( wxCommandEvent& event ) { event.Skip(); }
+		virtual void OnJavaHomeChanged( wxFileDirPickerEvent& event ) { event.Skip(); }
+		virtual void OnMountPathChanged( wxFileDirPickerEvent& event ) { event.Skip(); }
 
 
 	public:
 
-		MainFrame( wxWindow* parent, wxWindowID id = wxID_ANY, const wxString& title = _("DHFS"), const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxSize( 500,300 ), long style = wxDEFAULT_FRAME_STYLE|wxTAB_TRAVERSAL, const wxString& name = wxT("DHFS") );
+		MainFrame( wxWindow* parent, wxWindowID id = wxID_ANY, const wxString& title = _("DHFS"), const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxSize( 499,341 ), long style = wxDEFAULT_FRAME_STYLE|wxTAB_TRAVERSAL, const wxString& name = wxT("DHFS") );
 
 		~MainFrame();
 

launcher/gui/src/LauncherApp.cpp

@@ -15,11 +15,13 @@
 
 #include "LauncherAppMainFrame.h"
 #include "wx/taskbar.h"
-
+#include <wx/fileconf.h>
 IMPLEMENT_APP(LauncherApp)
 
 // This is executed upon startup, like 'main()' in non-wxWidgets programs.
 bool LauncherApp::OnInit() {
+    wxFileConfig::Get()->SetAppName("DHFS");
+
     wxFrame* frame = new LauncherAppMainFrame(NULL);
     frame->Show(true);
     SetTopWindow(frame);
@@ -31,3 +33,12 @@ bool LauncherApp::OnInit() {
 
     return true;
 }
+
+bool LauncherApp::OnExceptionInMainLoop() {
+    try {
+        std::rethrow_exception(std::current_exception());
+    } catch (const std::exception& e) {
+        wxMessageBox(e.what(), "Error", wxOK | wxICON_ERROR | wxCENTRE, GetTopWindow());
+    }
+    return true;
+}

launcher/gui/src/LauncherApp.h

@@ -9,7 +9,9 @@
 // containing a statusbar with the text "Hello World"
 class LauncherApp : public wxApp {
 public:
-    virtual bool OnInit();
+    virtual bool OnInit() override;
+
+    virtual bool OnExceptionInMainLoop() override;
 };
 
 DECLARE_APP(LauncherApp)

launcher/gui/src/LauncherAppMainFrame.cpp

@@ -1,13 +1,52 @@
 #include "LauncherAppMainFrame.h"
 
 #include <iostream>
+#include <wx/fileconf.h>
+
+#include "Exception.h"
+#include "LibjvmWrapper.hpp"
 
 LauncherAppMainFrame::LauncherAppMainFrame(wxWindow* parent)
     : MainFrame(parent) {
+    m_javaHomeDirPicker->SetPath(wxFileConfig::Get()->Read(kJavaHomeSettingsKey));
+    m_mountPathDirPicker->SetPath(wxFileConfig::Get()->Read(kMountPointSettingsKey));
+    wxGridSizer* bSizer4;
+    bSizer4 = new wxGridSizer(1, 0, 0);
+
+    m_panel5->SetSizer(bSizer4);
+    m_panel5->Layout();
+    bSizer4->Fit(m_panel5);
+    m_webView = wxWebView::New(m_panel5, wxID_ANY);
+    bSizer4->Add(m_webView, 0, wxALL | wxEXPAND);
+    m_webView->LoadURL("http://localhost:8080");
 }
 
 void LauncherAppMainFrame::OnStartStopButtonClick(wxCommandEvent& event) {
-    std::cout << "Hi!" << std::endl;
-    _dhfsInstance.start();
-    // TODO: Implement OnStartStopButtonClick
+    switch (_dhfsInstance.state()) {
+        case DhfsInstanceState::RUNNING:
+            m_statusText->SetLabel("Stopped");
+            m_startStopButton->SetLabel("Start");
+            m_statusBar1->SetStatusText("Stopped", 0);
+            _dhfsInstance.stop();
+            break;
+        case DhfsInstanceState::STOPPED:
+            LibjvmWrapper::instance().setJavaHome(wxFileConfig::Get()->Read(kJavaHomeSettingsKey).ToStdString());
+            m_statusText->SetLabel("Running");
+            m_startStopButton->SetLabel("Stop");
+            m_statusBar1->SetStatusText("Running", 0);
+            _dhfsInstance.start(wxFileConfig::Get()->Read(kMountPointSettingsKey).ToStdString(), {
+
+                                });
+            break;
+        default:
+            throw Exception("Unhandled switch case");
+    }
+}
+
+void LauncherAppMainFrame::OnJavaHomeChanged(wxFileDirPickerEvent& event) {
+    wxFileConfig::Get()->Write(kJavaHomeSettingsKey, event.GetPath());
+}
+
+void LauncherAppMainFrame::OnMountPathChanged(wxFileDirPickerEvent& event) {
+    wxFileConfig::Get()->Write(kMountPointSettingsKey, event.GetPath());
 }

launcher/gui/src/LauncherAppMainFrame.h

@@ -11,12 +11,19 @@ Subclass of MainFrame, which is generated by wxFormBuilder.
 //// end generated include
 
 #include "DhfsInstance.hpp"
+#include <wx/webview.h>
+static constexpr auto kJavaHomeSettingsKey = "DHFS/JavaHome";
+static constexpr auto kMountPointSettingsKey = "DHFS/MountDir";
 
 /** Implementing MainFrame */
 class LauncherAppMainFrame : public MainFrame {
 protected:
     // Handlers for MainFrame events.
-    void OnStartStopButtonClick(wxCommandEvent& event);
+    void OnStartStopButtonClick(wxCommandEvent& event) override;
+
+    void OnJavaHomeChanged(wxFileDirPickerEvent& event) override;
+
+    void OnMountPathChanged(wxFileDirPickerEvent& event) override;
 
 public:
     /** Constructor */
@@ -25,6 +32,8 @@ public:
     //// end generated class members
 
 private:
+    wxWebView* m_webView;
+
     DhfsInstance _dhfsInstance;
 };
 

launcher/gui/src/launcher.fbp

@@ -50,7 +50,7 @@
       <property name="minimum_size">100,50</property>
       <property name="name">MainFrame</property>
       <property name="pos"></property>
-      <property name="size">500,300</property>
+      <property name="size">499,341</property>
       <property name="style">wxDEFAULT_FRAME_STYLE</property>
       <property name="subclass">; ; forward_declare</property>
       <property name="title">DHFS</property>
@@ -150,8 +150,8 @@
             <object class="notebookpage" expanded="true">
               <property name="bitmap"></property>
               <property name="label">Info</property>
-              <property name="select">1</property>
-              <object class="wxPanel" expanded="false">
+              <property name="select">0</property>
+              <object class="wxPanel" expanded="true">
                 <property name="BottomDockable">1</property>
                 <property name="LeftDockable">1</property>
                 <property name="RightDockable">1</property>
@@ -203,16 +203,16 @@
                 <property name="window_extra_style"></property>
                 <property name="window_name"></property>
                 <property name="window_style">wxTAB_TRAVERSAL</property>
-                <object class="wxBoxSizer" expanded="false">
+                <object class="wxBoxSizer" expanded="true">
                   <property name="minimum_size"></property>
                   <property name="name">bSizer2</property>
                   <property name="orient">wxVERTICAL</property>
                   <property name="permission">none</property>
-                  <object class="sizeritem" expanded="false">
+                  <object class="sizeritem" expanded="true">
                     <property name="border">5</property>
-                    <property name="flag">wxEXPAND</property>
+                    <property name="flag">wxALL|wxEXPAND</property>
                     <property name="proportion">1</property>
-                    <object class="wxStaticBoxSizer" expanded="false">
+                    <object class="wxStaticBoxSizer" expanded="true">
                       <property name="id">wxID_ANY</property>
                       <property name="label">Status</property>
                       <property name="minimum_size"></property>
@@ -239,7 +239,7 @@
                             <property name="border">5</property>
                             <property name="colspan">1</property>
                             <property name="column">0</property>
-                            <property name="flag">wxALL</property>
+                            <property name="flag">wxALIGN_CENTER_VERTICAL|wxALL</property>
                             <property name="row">0</property>
                             <property name="rowspan">1</property>
                             <object class="wxStaticText" expanded="false">
@@ -280,7 +280,7 @@
                               <property name="minimize_button">0</property>
                               <property name="minimum_size"></property>
                               <property name="moveable">1</property>
-                              <property name="name">m_staticText1</property>
+                              <property name="name">m_statusText</property>
                               <property name="pane_border">1</property>
                               <property name="pane_position"></property>
                               <property name="pane_size"></property>
@@ -384,7 +384,7 @@
                   </object>
                   <object class="sizeritem" expanded="false">
                     <property name="border">5</property>
-                    <property name="flag">wxEXPAND</property>
+                    <property name="flag">wxALL|wxEXPAND</property>
                     <property name="proportion">1</property>
                     <object class="wxStaticBoxSizer" expanded="false">
                       <property name="id">wxID_ANY</property>
@@ -461,7 +461,7 @@
               <property name="bitmap"></property>
               <property name="label">Settings</property>
               <property name="select">0</property>
-              <object class="wxPanel" expanded="true">
+              <object class="wxPanel" expanded="false">
                 <property name="BottomDockable">1</property>
                 <property name="LeftDockable">1</property>
                 <property name="RightDockable">1</property>
@@ -513,6 +513,565 @@
                 <property name="window_extra_style"></property>
                 <property name="window_name"></property>
                 <property name="window_style">wxTAB_TRAVERSAL</property>
+                <object class="wxBoxSizer" expanded="false">
+                  <property name="minimum_size"></property>
+                  <property name="name">bSizer5</property>
+                  <property name="orient">wxVERTICAL</property>
+                  <property name="permission">none</property>
+                  <object class="sizeritem" expanded="false">
+                    <property name="border">5</property>
+                    <property name="flag">wxALL|wxEXPAND|wxFIXED_MINSIZE</property>
+                    <property name="proportion">1</property>
+                    <object class="wxStaticBoxSizer" expanded="false">
+                      <property name="id">wxID_ANY</property>
+                      <property name="label">JVM</property>
+                      <property name="minimum_size"></property>
+                      <property name="name">sbSizer3</property>
+                      <property name="orient">wxVERTICAL</property>
+                      <property name="parent">1</property>
+                      <property name="permission">none</property>
+                      <object class="sizeritem" expanded="false">
+                        <property name="border">5</property>
+                        <property name="flag">wxEXPAND</property>
+                        <property name="proportion">1</property>
+                        <object class="wxGridBagSizer" expanded="false">
+                          <property name="empty_cell_size"></property>
+                          <property name="flexible_direction">wxBOTH</property>
+                          <property name="growablecols">1</property>
+                          <property name="growablerows"></property>
+                          <property name="hgap">0</property>
+                          <property name="minimum_size"></property>
+                          <property name="name">gbSizer2</property>
+                          <property name="non_flexible_grow_mode">wxFLEX_GROWMODE_SPECIFIED</property>
+                          <property name="permission">none</property>
+                          <property name="vgap">0</property>
+                          <object class="gbsizeritem" expanded="false">
+                            <property name="border">5</property>
+                            <property name="colspan">1</property>
+                            <property name="column">3</property>
+                            <property name="flag">wxALL</property>
+                            <property name="row">0</property>
+                            <property name="rowspan">1</property>
+                            <object class="wxButton" expanded="false">
+                              <property name="BottomDockable">1</property>
+                              <property name="LeftDockable">1</property>
+                              <property name="RightDockable">1</property>
+                              <property name="TopDockable">1</property>
+                              <property name="aui_layer">0</property>
+                              <property name="aui_name"></property>
+                              <property name="aui_position">0</property>
+                              <property name="aui_row">0</property>
+                              <property name="auth_needed">0</property>
+                              <property name="best_size"></property>
+                              <property name="bg"></property>
+                              <property name="bitmap"></property>
+                              <property name="caption"></property>
+                              <property name="caption_visible">1</property>
+                              <property name="center_pane">0</property>
+                              <property name="close_button">1</property>
+                              <property name="context_help"></property>
+                              <property name="context_menu">1</property>
+                              <property name="current"></property>
+                              <property name="default">0</property>
+                              <property name="default_pane">0</property>
+                              <property name="disabled"></property>
+                              <property name="dock">Dock</property>
+                              <property name="dock_fixed">0</property>
+                              <property name="docking">Left</property>
+                              <property name="drag_accept_files">0</property>
+                              <property name="enabled">1</property>
+                              <property name="fg"></property>
+                              <property name="floatable">1</property>
+                              <property name="focus"></property>
+                              <property name="font"></property>
+                              <property name="gripper">0</property>
+                              <property name="hidden">0</property>
+                              <property name="id">wxID_ANY</property>
+                              <property name="label">Reset</property>
+                              <property name="margins"></property>
+                              <property name="markup">0</property>
+                              <property name="max_size"></property>
+                              <property name="maximize_button">0</property>
+                              <property name="maximum_size"></property>
+                              <property name="min_size"></property>
+                              <property name="minimize_button">0</property>
+                              <property name="minimum_size"></property>
+                              <property name="moveable">1</property>
+                              <property name="name">m_button2</property>
+                              <property name="pane_border">1</property>
+                              <property name="pane_position"></property>
+                              <property name="pane_size"></property>
+                              <property name="permission">protected</property>
+                              <property name="pin_button">1</property>
+                              <property name="pos"></property>
+                              <property name="position"></property>
+                              <property name="pressed"></property>
+                              <property name="resize">Resizable</property>
+                              <property name="show">1</property>
+                              <property name="size"></property>
+                              <property name="style"></property>
+                              <property name="subclass">; ; forward_declare</property>
+                              <property name="toolbar_pane">0</property>
+                              <property name="tooltip"></property>
+                              <property name="validator_data_type"></property>
+                              <property name="validator_style">wxFILTER_NONE</property>
+                              <property name="validator_type">wxDefaultValidator</property>
+                              <property name="validator_variable"></property>
+                              <property name="window_extra_style"></property>
+                              <property name="window_name"></property>
+                              <property name="window_style"></property>
+                            </object>
+                          </object>
+                          <object class="gbsizeritem" expanded="false">
+                            <property name="border">5</property>
+                            <property name="colspan">1</property>
+                            <property name="column">2</property>
+                            <property name="flag">wxEXPAND</property>
+                            <property name="row">0</property>
+                            <property name="rowspan">1</property>
+                            <object class="spacer" expanded="false">
+                              <property name="height">0</property>
+                              <property name="permission">protected</property>
+                              <property name="width">50</property>
+                            </object>
+                          </object>
+                          <object class="gbsizeritem" expanded="false">
+                            <property name="border">5</property>
+                            <property name="colspan">1</property>
+                            <property name="column">1</property>
+                            <property name="flag">wxALL|wxEXPAND</property>
+                            <property name="row">0</property>
+                            <property name="rowspan">1</property>
+                            <object class="wxDirPickerCtrl" expanded="false">
+                              <property name="BottomDockable">1</property>
+                              <property name="LeftDockable">1</property>
+                              <property name="RightDockable">1</property>
+                              <property name="TopDockable">1</property>
+                              <property name="aui_layer">0</property>
+                              <property name="aui_name"></property>
+                              <property name="aui_position">0</property>
+                              <property name="aui_row">0</property>
+                              <property name="best_size"></property>
+                              <property name="bg"></property>
+                              <property name="caption"></property>
+                              <property name="caption_visible">1</property>
+                              <property name="center_pane">0</property>
+                              <property name="close_button">1</property>
+                              <property name="context_help"></property>
+                              <property name="context_menu">1</property>
+                              <property name="default_pane">0</property>
+                              <property name="dock">Dock</property>
+                              <property name="dock_fixed">0</property>
+                              <property name="docking">Left</property>
+                              <property name="drag_accept_files">0</property>
+                              <property name="enabled">1</property>
+                              <property name="fg"></property>
+                              <property name="floatable">1</property>
+                              <property name="font"></property>
+                              <property name="gripper">0</property>
+                              <property name="hidden">0</property>
+                              <property name="id">wxID_ANY</property>
+                              <property name="max_size"></property>
+                              <property name="maximize_button">0</property>
+                              <property name="maximum_size"></property>
+                              <property name="message">Select a folder</property>
+                              <property name="min_size"></property>
+                              <property name="minimize_button">0</property>
+                              <property name="minimum_size"></property>
+                              <property name="moveable">1</property>
+                              <property name="name">m_javaHomeDirPicker</property>
+                              <property name="pane_border">1</property>
+                              <property name="pane_position"></property>
+                              <property name="pane_size"></property>
+                              <property name="permission">protected</property>
+                              <property name="pin_button">1</property>
+                              <property name="pos"></property>
+                              <property name="resize">Resizable</property>
+                              <property name="show">1</property>
+                              <property name="size"></property>
+                              <property name="style">wxDIRP_DEFAULT_STYLE|wxDIRP_USE_TEXTCTRL</property>
+                              <property name="subclass">; ; forward_declare</property>
+                              <property name="toolbar_pane">0</property>
+                              <property name="tooltip"></property>
+                              <property name="validator_data_type"></property>
+                              <property name="validator_style">wxFILTER_NONE</property>
+                              <property name="validator_type">wxDefaultValidator</property>
+                              <property name="validator_variable"></property>
+                              <property name="value"></property>
+                              <property name="window_extra_style"></property>
+                              <property name="window_name"></property>
+                              <property name="window_style"></property>
+                              <event name="OnDirChanged">OnJavaHomeChanged</event>
+                            </object>
+                          </object>
+                          <object class="gbsizeritem" expanded="false">
+                            <property name="border">5</property>
+                            <property name="colspan">1</property>
+                            <property name="column">0</property>
+                            <property name="flag">wxALIGN_CENTER_VERTICAL|wxALL</property>
+                            <property name="row">0</property>
+                            <property name="rowspan">1</property>
+                            <object class="wxStaticText" expanded="false">
+                              <property name="BottomDockable">1</property>
+                              <property name="LeftDockable">1</property>
+                              <property name="RightDockable">1</property>
+                              <property name="TopDockable">1</property>
+                              <property name="aui_layer">0</property>
+                              <property name="aui_name"></property>
+                              <property name="aui_position">0</property>
+                              <property name="aui_row">0</property>
+                              <property name="best_size"></property>
+                              <property name="bg"></property>
+                              <property name="caption"></property>
+                              <property name="caption_visible">1</property>
+                              <property name="center_pane">0</property>
+                              <property name="close_button">1</property>
+                              <property name="context_help"></property>
+                              <property name="context_menu">1</property>
+                              <property name="default_pane">0</property>
+                              <property name="dock">Dock</property>
+                              <property name="dock_fixed">0</property>
+                              <property name="docking">Left</property>
+                              <property name="drag_accept_files">0</property>
+                              <property name="enabled">1</property>
+                              <property name="fg"></property>
+                              <property name="floatable">1</property>
+                              <property name="font"></property>
+                              <property name="gripper">0</property>
+                              <property name="hidden">0</property>
+                              <property name="id">wxID_ANY</property>
+                              <property name="label">Java Home</property>
+                              <property name="markup">0</property>
+                              <property name="max_size"></property>
+                              <property name="maximize_button">0</property>
+                              <property name="maximum_size"></property>
+                              <property name="min_size"></property>
+                              <property name="minimize_button">0</property>
+                              <property name="minimum_size"></property>
+                              <property name="moveable">1</property>
+                              <property name="name">m_staticText2</property>
+                              <property name="pane_border">1</property>
+                              <property name="pane_position"></property>
+                              <property name="pane_size"></property>
+                              <property name="permission">protected</property>
+                              <property name="pin_button">1</property>
+                              <property name="pos"></property>
+                              <property name="resize">Resizable</property>
+                              <property name="show">1</property>
+                              <property name="size"></property>
+                              <property name="style"></property>
+                              <property name="subclass">; ; forward_declare</property>
+                              <property name="toolbar_pane">0</property>
+                              <property name="tooltip"></property>
+                              <property name="window_extra_style"></property>
+                              <property name="window_name"></property>
+                              <property name="window_style"></property>
+                              <property name="wrap">-1</property>
+                            </object>
+                          </object>
+                        </object>
+                      </object>
+                    </object>
+                  </object>
+                  <object class="sizeritem" expanded="false">
+                    <property name="border">5</property>
+                    <property name="flag">wxALL|wxEXPAND</property>
+                    <property name="proportion">1</property>
+                    <object class="wxStaticBoxSizer" expanded="false">
+                      <property name="id">wxID_ANY</property>
+                      <property name="label">Paths</property>
+                      <property name="minimum_size"></property>
+                      <property name="name">sbSizer41</property>
+                      <property name="orient">wxVERTICAL</property>
+                      <property name="parent">1</property>
+                      <property name="permission">none</property>
+                      <object class="sizeritem" expanded="false">
+                        <property name="border">5</property>
+                        <property name="flag">wxEXPAND</property>
+                        <property name="proportion">1</property>
+                        <object class="wxGridBagSizer" expanded="false">
+                          <property name="empty_cell_size"></property>
+                          <property name="flexible_direction">wxBOTH</property>
+                          <property name="growablecols">1</property>
+                          <property name="growablerows"></property>
+                          <property name="hgap">0</property>
+                          <property name="minimum_size"></property>
+                          <property name="name">gbSizer3</property>
+                          <property name="non_flexible_grow_mode">wxFLEX_GROWMODE_SPECIFIED</property>
+                          <property name="permission">none</property>
+                          <property name="vgap">0</property>
+                          <object class="gbsizeritem" expanded="false">
+                            <property name="border">5</property>
+                            <property name="colspan">1</property>
+                            <property name="column">0</property>
+                            <property name="flag">wxALIGN_CENTER_VERTICAL|wxALL</property>
+                            <property name="row">0</property>
+                            <property name="rowspan">1</property>
+                            <object class="wxStaticText" expanded="false">
+                              <property name="BottomDockable">1</property>
+                              <property name="LeftDockable">1</property>
+                              <property name="RightDockable">1</property>
+                              <property name="TopDockable">1</property>
+                              <property name="aui_layer">0</property>
+                              <property name="aui_name"></property>
+                              <property name="aui_position">0</property>
+                              <property name="aui_row">0</property>
+                              <property name="best_size"></property>
+                              <property name="bg"></property>
+                              <property name="caption"></property>
+                              <property name="caption_visible">1</property>
+                              <property name="center_pane">0</property>
+                              <property name="close_button">1</property>
+                              <property name="context_help"></property>
+                              <property name="context_menu">1</property>
+                              <property name="default_pane">0</property>
+                              <property name="dock">Dock</property>
+                              <property name="dock_fixed">0</property>
+                              <property name="docking">Left</property>
+                              <property name="drag_accept_files">0</property>
+                              <property name="enabled">1</property>
+                              <property name="fg"></property>
+                              <property name="floatable">1</property>
+                              <property name="font"></property>
+                              <property name="gripper">0</property>
+                              <property name="hidden">0</property>
+                              <property name="id">wxID_ANY</property>
+                              <property name="label">Mount path</property>
+                              <property name="markup">0</property>
+                              <property name="max_size"></property>
+                              <property name="maximize_button">0</property>
+                              <property name="maximum_size"></property>
+                              <property name="min_size"></property>
+                              <property name="minimize_button">0</property>
+                              <property name="minimum_size"></property>
+                              <property name="moveable">1</property>
+                              <property name="name">m_staticText6</property>
+                              <property name="pane_border">1</property>
+                              <property name="pane_position"></property>
+                              <property name="pane_size"></property>
+                              <property name="permission">protected</property>
+                              <property name="pin_button">1</property>
+                              <property name="pos"></property>
+                              <property name="resize">Resizable</property>
+                              <property name="show">1</property>
+                              <property name="size"></property>
+                              <property name="style"></property>
+                              <property name="subclass">; ; forward_declare</property>
+                              <property name="toolbar_pane">0</property>
+                              <property name="tooltip"></property>
+                              <property name="window_extra_style"></property>
+                              <property name="window_name"></property>
+                              <property name="window_style"></property>
+                              <property name="wrap">-1</property>
+                            </object>
+                          </object>
+                          <object class="gbsizeritem" expanded="false">
+                            <property name="border">5</property>
+                            <property name="colspan">1</property>
+                            <property name="column">1</property>
+                            <property name="flag">wxALL|wxEXPAND</property>
+                            <property name="row">0</property>
+                            <property name="rowspan">1</property>
+                            <object class="wxDirPickerCtrl" expanded="false">
+                              <property name="BottomDockable">1</property>
+                              <property name="LeftDockable">1</property>
+                              <property name="RightDockable">1</property>
+                              <property name="TopDockable">1</property>
+                              <property name="aui_layer">0</property>
+                              <property name="aui_name"></property>
+                              <property name="aui_position">0</property>
+                              <property name="aui_row">0</property>
+                              <property name="best_size"></property>
+                              <property name="bg"></property>
+                              <property name="caption"></property>
+                              <property name="caption_visible">1</property>
+                              <property name="center_pane">0</property>
+                              <property name="close_button">1</property>
+                              <property name="context_help"></property>
+                              <property name="context_menu">1</property>
+                              <property name="default_pane">0</property>
+                              <property name="dock">Dock</property>
+                              <property name="dock_fixed">0</property>
+                              <property name="docking">Left</property>
+                              <property name="drag_accept_files">0</property>
+                              <property name="enabled">1</property>
+                              <property name="fg"></property>
+                              <property name="floatable">1</property>
+                              <property name="font"></property>
+                              <property name="gripper">0</property>
+                              <property name="hidden">0</property>
+                              <property name="id">wxID_ANY</property>
+                              <property name="max_size"></property>
+                              <property name="maximize_button">0</property>
+                              <property name="maximum_size"></property>
+                              <property name="message">Select a folder</property>
+                              <property name="min_size"></property>
+                              <property name="minimize_button">0</property>
+                              <property name="minimum_size"></property>
+                              <property name="moveable">1</property>
+                              <property name="name">m_mountPathDirPicker</property>
+                              <property name="pane_border">1</property>
+                              <property name="pane_position"></property>
+                              <property name="pane_size"></property>
+                              <property name="permission">protected</property>
+                              <property name="pin_button">1</property>
+                              <property name="pos"></property>
+                              <property name="resize">Resizable</property>
+                              <property name="show">1</property>
+                              <property name="size"></property>
+                              <property name="style">wxDIRP_DEFAULT_STYLE|wxDIRP_USE_TEXTCTRL</property>
+                              <property name="subclass">; ; forward_declare</property>
+                              <property name="toolbar_pane">0</property>
+                              <property name="tooltip"></property>
+                              <property name="validator_data_type"></property>
+                              <property name="validator_style">wxFILTER_NONE</property>
+                              <property name="validator_type">wxDefaultValidator</property>
+                              <property name="validator_variable"></property>
+                              <property name="value"></property>
+                              <property name="window_extra_style"></property>
+                              <property name="window_name"></property>
+                              <property name="window_style"></property>
+                              <event name="OnDirChanged">OnMountPathChanged</event>
+                            </object>
+                          </object>
+                        </object>
+                      </object>
+                    </object>
+                  </object>
+                </object>
+              </object>
+            </object>
+            <object class="notebookpage" expanded="true">
+              <property name="bitmap"></property>
+              <property name="label">Advanced Settings</property>
+              <property name="select">0</property>
+              <object class="wxPanel" expanded="true">
+                <property name="BottomDockable">1</property>
+                <property name="LeftDockable">1</property>
+                <property name="RightDockable">1</property>
+                <property name="TopDockable">1</property>
+                <property name="aui_layer">0</property>
+                <property name="aui_name"></property>
+                <property name="aui_position">0</property>
+                <property name="aui_row">0</property>
+                <property name="best_size"></property>
+                <property name="bg"></property>
+                <property name="caption"></property>
+                <property name="caption_visible">1</property>
+                <property name="center_pane">0</property>
+                <property name="close_button">1</property>
+                <property name="context_help"></property>
+                <property name="context_menu">1</property>
+                <property name="default_pane">0</property>
+                <property name="dock">Dock</property>
+                <property name="dock_fixed">0</property>
+                <property name="docking">Left</property>
+                <property name="drag_accept_files">0</property>
+                <property name="enabled">1</property>
+                <property name="fg"></property>
+                <property name="floatable">1</property>
+                <property name="font"></property>
+                <property name="gripper">0</property>
+                <property name="hidden">0</property>
+                <property name="id">wxID_ANY</property>
+                <property name="max_size"></property>
+                <property name="maximize_button">0</property>
+                <property name="maximum_size"></property>
+                <property name="min_size"></property>
+                <property name="minimize_button">0</property>
+                <property name="minimum_size"></property>
+                <property name="moveable">1</property>
+                <property name="name">m_panel4</property>
+                <property name="pane_border">1</property>
+                <property name="pane_position"></property>
+                <property name="pane_size"></property>
+                <property name="permission">protected</property>
+                <property name="pin_button">1</property>
+                <property name="pos"></property>
+                <property name="resize">Resizable</property>
+                <property name="show">1</property>
+                <property name="size"></property>
+                <property name="subclass">; ; forward_declare</property>
+                <property name="toolbar_pane">0</property>
+                <property name="tooltip"></property>
+                <property name="window_extra_style"></property>
+                <property name="window_name"></property>
+                <property name="window_style">wxTAB_TRAVERSAL</property>
+              </object>
+            </object>
+            <object class="notebookpage" expanded="true">
+              <property name="bitmap"></property>
+              <property name="label">a page</property>
+              <property name="select">1</property>
+              <object class="wxPanel" expanded="true">
+                <property name="BottomDockable">1</property>
+                <property name="LeftDockable">1</property>
+                <property name="RightDockable">1</property>
+                <property name="TopDockable">1</property>
+                <property name="aui_layer">0</property>
+                <property name="aui_name"></property>
+                <property name="aui_position">0</property>
+                <property name="aui_row">0</property>
+                <property name="best_size"></property>
+                <property name="bg"></property>
+                <property name="caption"></property>
+                <property name="caption_visible">1</property>
+                <property name="center_pane">0</property>
+                <property name="close_button">1</property>
+                <property name="context_help"></property>
+                <property name="context_menu">1</property>
+                <property name="default_pane">0</property>
+                <property name="dock">Dock</property>
+                <property name="dock_fixed">0</property>
+                <property name="docking">Left</property>
+                <property name="drag_accept_files">0</property>
+                <property name="enabled">1</property>
+                <property name="fg"></property>
+                <property name="floatable">1</property>
+                <property name="font"></property>
+                <property name="gripper">0</property>
+                <property name="hidden">0</property>
+                <property name="id">wxID_ANY</property>
+                <property name="max_size"></property>
+                <property name="maximize_button">0</property>
+                <property name="maximum_size"></property>
+                <property name="min_size"></property>
+                <property name="minimize_button">0</property>
+                <property name="minimum_size"></property>
+                <property name="moveable">1</property>
+                <property name="name">m_panel5</property>
+                <property name="pane_border">1</property>
+                <property name="pane_position"></property>
+                <property name="pane_size"></property>
+                <property name="permission">protected</property>
+                <property name="pin_button">1</property>
+                <property name="pos"></property>
+                <property name="resize">Resizable</property>
+                <property name="show">1</property>
+                <property name="size"></property>
+                <property name="subclass">; ; forward_declare</property>
+                <property name="toolbar_pane">0</property>
+                <property name="tooltip"></property>
+                <property name="window_extra_style"></property>
+                <property name="window_name"></property>
+                <property name="window_style">wxTAB_TRAVERSAL</property>
+                <object class="wxBoxSizer" expanded="true">
+                  <property name="minimum_size"></property>
+                  <property name="name">bSizer4</property>
+                  <property name="orient">wxVERTICAL</property>
+                  <property name="permission">none</property>
+                  <object class="sizeritem" expanded="true">
+                    <property name="border">5</property>
+                    <property name="flag">wxEXPAND</property>
+                    <property name="proportion">1</property>
+                    <object class="wxBoxSizer" expanded="true">
+                      <property name="minimum_size"></property>
+                      <property name="name">bSizer51</property>
+                      <property name="orient">wxHORIZONTAL</property>
+                      <property name="permission">none</property>
+                    </object>
+                  </object>
+                </object>
               </object>
             </object>
           </object>

launcher/libjvm_wrapper/CMakeLists.txt

@@ -7,4 +7,6 @@ target_include_directories(libjvm_wrapper PRIVATE include)
 target_include_directories(libjvm_wrapper PUBLIC include_public)
 
 find_package(JNI REQUIRED)
-target_include_directories(libjvm_wrapper PUBLIC ${JNI_INCLUDE_DIRS})
+target_include_directories(libjvm_wrapper PUBLIC ${JNI_INCLUDE_DIRS})
+
+target_link_libraries(libjvm_wrapper PUBLIC utils)

launcher/libjvm_wrapper/include_public/LibjvmWrapper.hpp

@@ -4,21 +4,30 @@
 
 #ifndef LIBJVMWRAPPER_HPP
 #define LIBJVMWRAPPER_HPP
-#include <jni.h>
 
+#include <jni.h>
+#include <string>
 
 class LibjvmWrapper {
 public:
     static LibjvmWrapper& instance();
 
-    decltype(JNI_CreateJavaVM)* JNI_CreateJavaVM;
+    void setJavaHome(const std::string& javaHome);
+
+    decltype(JNI_CreateJavaVM)* get_JNI_CreateJavaVM();
 
 private:
+    void load();
+
+    void unload();
+
     LibjvmWrapper();
 
     ~LibjvmWrapper();
 
-    void* _lib_handle;
+    void* _lib_handle = nullptr;
+    decltype(JNI_CreateJavaVM)* WJNI_CreateJavaVM = nullptr;
+    std::string _java_home;
 };
 
 

launcher/libjvm_wrapper/src/LibjvmWrapper.cpp

@@ -6,8 +6,7 @@
 #include <dlfcn.h>
 #include <jni.h>
 
-static constexpr auto LIBJVM_PATH =
-        "/Library/Java/JavaVirtualMachines/zulu-21.jdk/Contents/Home/lib/server/libjvm.dylib";
+#include "Exception.h"
 
 LibjvmWrapper& LibjvmWrapper::instance() {
     static LibjvmWrapper instance;
@@ -15,11 +14,46 @@ LibjvmWrapper& LibjvmWrapper::instance() {
 }
 
 LibjvmWrapper::LibjvmWrapper() {
-    _lib_handle = dlopen(LIBJVM_PATH, RTLD_NOW | RTLD_GLOBAL);
-    JNI_CreateJavaVM = reinterpret_cast<decltype(JNI_CreateJavaVM)>(
+}
+
+void LibjvmWrapper::load() {
+    if (_java_home == "")
+        throw Exception("Java home not set");
+    if (_lib_handle != nullptr)
+        throw Exception("load() called when already loaded");
+
+    std::string javaHomeAppended;
+    javaHomeAppended = _java_home + "/lib/server/libjvm.so";
+
+    _lib_handle = dlopen(javaHomeAppended.c_str(), RTLD_NOW | RTLD_GLOBAL);
+    if (_lib_handle == nullptr)
+        throw Exception(dlerror());
+    WJNI_CreateJavaVM = reinterpret_cast<decltype(WJNI_CreateJavaVM)>(
         dlsym(_lib_handle, "JNI_CreateJavaVM"));
+    if (WJNI_CreateJavaVM == nullptr)
+        throw Exception(dlerror());
+}
+
+void LibjvmWrapper::unload() {
+    if (_lib_handle != nullptr) {
+        dlclose(_lib_handle);
+        _lib_handle = nullptr;
+        WJNI_CreateJavaVM = nullptr;
+    }
+}
+
+decltype(JNI_CreateJavaVM)* LibjvmWrapper::get_JNI_CreateJavaVM() {
+    if (WJNI_CreateJavaVM == nullptr) {
+        load();
+    }
+    return WJNI_CreateJavaVM;
 }
 
 LibjvmWrapper::~LibjvmWrapper() {
-    dlclose(_lib_handle);
+    unload();
+}
+
+void LibjvmWrapper::setJavaHome(const std::string& javaHome) {
+    unload();
+    _java_home = javaHome;
 }

launcher/utils/CMakeLists.txt

@@ -0,0 +1,7 @@
+add_library(utils
+        src/Exception.cpp
+        include_public/Exception.h
+)
+
+target_include_directories(utils PRIVATE include)
+target_include_directories(utils PUBLIC include_public)

launcher/utils/include_public/Exception.h

@@ -0,0 +1,30 @@
+//
+// Created by Stepan Usatiuk on 01.05.2023.
+//
+
+#ifndef SEMBACKUP_EXCEPTION_H
+#define SEMBACKUP_EXCEPTION_H
+
+#include <cstring>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+/// Custom exception class that uses execinfo to append a stacktrace to the exception message
+class Exception : public std::runtime_error {
+public:
+    Exception(const std::string& text);
+    Exception(const char* text);
+
+private:
+    /// Static function to get the current stacktrace
+    static std::string getStacktrace();
+};
+
+class ErrnoException : public Exception {
+public:
+    ErrnoException(const std::string& text) : Exception(text + " " + std::strerror(errno)) {}
+    ErrnoException(const char* text) : Exception(std::string(text) + " " + std::strerror(errno)) {}
+};
+
+#endif // SEMBACKUP_EXCEPTION_H

launcher/utils/src/Exception.cpp

@@ -0,0 +1,37 @@
+//
+// Created by Stepan Usatiuk on 01.05.2023.
+//
+
+#include "Exception.h"
+
+#include <execinfo.h>
+#include <sstream>
+
+#include <openssl/err.h>
+
+Exception::Exception(const std::string& text) : runtime_error(text + "\n" + getStacktrace()) {
+}
+
+Exception::Exception(const char* text) : runtime_error(std::string(text) + "\n" + getStacktrace()) {
+}
+
+// Based on: https://www.gnu.org/software/libc/manual/html_node/Backtraces.html
+std::string Exception::getStacktrace() {
+    std::vector<void*> functions(50);
+    char** strings;
+    int n;
+
+    n = backtrace(functions.data(), 50);
+    strings = backtrace_symbols(functions.data(), n);
+
+    std::stringstream out;
+
+    if (strings != nullptr) {
+        out << "Stacktrace:" << std::endl;
+        for (int i = 0; i < n; i++)
+            out << strings[i] << std::endl;
+    }
+
+    free(strings);
+    return out.str();
+}