Fix virtual device app exit (#2485)

***NO_CI***

Author: josesimoes

src/CLR/Debugger/Debugger.cpp

@@ -1393,6 +1393,11 @@ bool CLR_DBG_Debugger::Debugging_Execution_ChangeConditions(WP_Message *msg)
     {
         // update conditions
         g_CLR_RT_ExecutionEngine.m_iDebugger_Conditions = newConditions;
+
+#ifdef VIRTTUAL_DEVICE
+        // fire event with update on debugger activity
+        ::Events_Set(SYSTEM_EVENT_FLAG_DEBUGGER_ACTIVITY);
+#endif // VIRTTUAL_DEVICE
     }
 
     return true;

targets/win32/nanoCLR/targetPAL_Events.cpp

@@ -99,14 +99,22 @@ uint32_t Events_WaitForEvents(uint32_t powerLevel, uint32_t wakeupSystemEvents,
 {
     std::unique_lock<std::mutex> scopeLock(EventsMutex);
 
+    if (CLR_EE_DBG_IS(RebootPending) || CLR_EE_DBG_IS(ExitPending))
+    {
+        // there is a reboot or program exit condition pending, no need to wait for anything
+        return 0;
+    }
+
     bool timeout = false;
+
     // check current condition before waiting as Condition var doesn't do that
     if ((wakeupSystemEvents & SystemEvents) == 0)
     {
         timeout = !EventsConditionVar.wait_for(scopeLock, std::chrono::milliseconds(timeoutMilliseconds), [=]() {
             return (wakeupSystemEvents & SystemEvents) != 0;
         });
     }
+
     return timeout ? 0 : SystemEvents & wakeupSystemEvents;
 }