1 files changed, 120 insertions, 0 deletions
diff --git a/meshmc/launcher/tools/JVisualVM.cpp b/meshmc/launcher/tools/JVisualVM.cpp
new file mode 100644
index 0000000000..ae4c1fc981
--- /dev/null
+++ b/meshmc/launcher/tools/JVisualVM.cpp
@@ -0,0 +1,120 @@
+/* SPDX-FileCopyrightText: 2026 Project Tick
+ * SPDX-FileContributor: Project Tick
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   MeshMC - A Custom Launcher for Minecraft
+ *   Copyright (C) 2026 Project Tick
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "JVisualVM.h"
+
+#include <QDir>
+#include <QStandardPaths>
+
+#include "settings/SettingsObject.h"
+#include "launch/LaunchTask.h"
+#include "BaseInstance.h"
+
+class JVisualVM : public BaseProfiler
+{
+	Q_OBJECT
+  public:
+	JVisualVM(SettingsObjectPtr settings, InstancePtr instance,
+			  QObject* parent = 0);
+
+  private slots:
+	void profilerStarted();
+	void profilerFinished(int exit, QProcess::ExitStatus status);
+
+  protected:
+	void beginProfilingImpl(shared_qobject_ptr<LaunchTask> process);
+};
+
+JVisualVM::JVisualVM(SettingsObjectPtr settings, InstancePtr instance,
+					 QObject* parent)
+	: BaseProfiler(settings, instance, parent)
+{
+}
+
+void JVisualVM::profilerStarted()
+{
+	emit readyToLaunch(tr("JVisualVM started"));
+}
+
+void JVisualVM::profilerFinished(int exit, QProcess::ExitStatus status)
+{
+	if (status == QProcess::CrashExit) {
+		emit abortLaunch(tr("Profiler aborted"));
+	}
+	if (m_profilerProcess) {
+		m_profilerProcess->deleteLater();
+		m_profilerProcess = 0;
+	}
+}
+
+void JVisualVM::beginProfilingImpl(shared_qobject_ptr<LaunchTask> process)
+{
+	QProcess* profiler = new QProcess(this);
+	QStringList profilerArgs = {"--openpid", QString::number(process->pid())};
+	auto programPath = globalSettings->get("JVisualVMPath").toString();
+
+	profiler->setArguments(profilerArgs);
+	profiler->setProgram(programPath);
+
+	connect(profiler, SIGNAL(started()), SLOT(profilerStarted()));
+	connect(profiler, SIGNAL(finished(int, QProcess::ExitStatus)),
+			SLOT(profilerFinished(int, QProcess::ExitStatus)));
+
+	profiler->start();
+	m_profilerProcess = profiler;
+}
+
+void JVisualVMFactory::registerSettings(SettingsObjectPtr settings)
+{
+	QString defaultValue = QStandardPaths::findExecutable("jvisualvm");
+	if (defaultValue.isNull()) {
+		defaultValue = QStandardPaths::findExecutable("visualvm");
+	}
+	settings->registerSetting("JVisualVMPath", defaultValue);
+	globalSettings = settings;
+}
+
+BaseExternalTool* JVisualVMFactory::createTool(InstancePtr instance,
+											   QObject* parent)
+{
+	return new JVisualVM(globalSettings, instance, parent);
+}
+
+bool JVisualVMFactory::check(QString* error)
+{
+	return check(globalSettings->get("JVisualVMPath").toString(), error);
+}
+
+bool JVisualVMFactory::check(const QString& path, QString* error)
+{
+	if (path.isEmpty()) {
+		*error = QObject::tr("Empty path");
+		return false;
+	}
+	QFileInfo finfo(path);
+	if (!finfo.isExecutable() || !finfo.fileName().contains("visualvm")) {
+		*error = QObject::tr("Invalid path to JVisualVM");
+		return false;
+	}
+	return true;
+}
+
+#include "JVisualVM.moc"