84 lines
1.6 KiB
C++
84 lines
1.6 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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namespace Core::DeadlockDetector {
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class PingPongEvent : public QEvent {
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public:
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static auto Type() {
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static const auto Result = QEvent::Type(QEvent::registerEventType());
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return Result;
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}
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PingPongEvent(not_null<QObject*> sender)
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: QEvent(Type())
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, _sender(sender) {
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}
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[[nodiscard]] not_null<QObject*> sender() const {
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return _sender;
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}
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private:
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not_null<QObject*> _sender;
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};
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class Pinger : public QObject {
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public:
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Pinger(not_null<QObject*> receiver)
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: _receiver(receiver)
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, _abortTimer([] { Unexpected("Deadlock found!"); }) {
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const auto callback = [=] {
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QCoreApplication::postEvent(_receiver, new PingPongEvent(this));
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_abortTimer.callOnce(30000);
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};
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_pingTimer.setCallback(callback);
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_pingTimer.callEach(60000);
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callback();
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}
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protected:
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bool event(QEvent *e) override {
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if (e->type() == PingPongEvent::Type()
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&& static_cast<PingPongEvent*>(e)->sender() == _receiver) {
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_abortTimer.cancel();
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}
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return QObject::event(e);
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}
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private:
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not_null<QObject*> _receiver;
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base::Timer _pingTimer;
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base::Timer _abortTimer;
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};
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class PingThread : public QThread {
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public:
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PingThread(not_null<QObject*> parent)
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: QThread(parent) {
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start();
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}
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~PingThread() {
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quit();
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wait();
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}
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protected:
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void run() override {
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Pinger pinger(parent());
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QThread::run();
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}
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};
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} // namespace Core::DeadlockDetector
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