eventloop: move timers to an event loop fd

fixes #5481

src/managers/eventLoop/EventLoopManager.hpp

@@ -10,10 +10,14 @@
 
 class CEventLoopManager {
   public:
+    CEventLoopManager();
+    
     void enterLoop(wl_display* display, wl_event_loop* wlEventLoop);
     void addTimer(std::shared_ptr<CEventLoopTimer> timer);
     void removeTimer(std::shared_ptr<CEventLoopTimer> timer);
 
+    void onTimerFire();
+
     // recalculates timers
     void nudgeTimers();
 
@@ -21,26 +25,12 @@ class CEventLoopManager {
     struct {
         wl_event_loop* loop    = nullptr;
         wl_display*    display = nullptr;
-        std::thread    pollThread;
     } m_sWayland;
 
     struct {
-        std::mutex                                    timersMutex;
-        std::mutex                                    timersRqMutex;
         std::vector<std::shared_ptr<CEventLoopTimer>> timers;
-        std::thread                                   timerThread;
-        bool                                          event = false;
-        std::condition_variable                       cv;
+        int                                           timerfd = -1;
     } m_sTimers;
-
-    struct {
-        std::mutex              loopMutex;
-        std::mutex              eventRequestMutex;
-        bool                    event = false;
-        std::condition_variable cv;
-    } m_sLoopState;
-
-    bool m_bTerminate = false;
 };
 
 inline std::unique_ptr<CEventLoopManager> g_pEventLoopManager;