- add lock

- remove manual reset event

Lib.ProcessManaging/ProcessManager.cs

@@ -17,6 +17,8 @@ namespace Lib.ProcessManaging
         private readonly IObservedProcessFactory _observedProcessFactory;
         private readonly CancellationTokenSource _cancellationTokenSource;
 
+        private readonly object _processesLock = new();
+        
         private Thread? _monitorThread;
 
         public ProcessManager(IObservedProcessFactory observedProcessFactory)
@@ -31,26 +33,26 @@ namespace Lib.ProcessManaging
         
         public void Initialize()
         {
-            using ManualResetEvent monitorReadyEvent = new(false);
             _monitorThread = new Thread(Monitor)
             {
                 Name = "Process Monitor", 
                 IsBackground = true
             };
             
-            _monitorThread.Start(monitorReadyEvent);
+            _monitorThread.Start();
-            monitorReadyEvent.WaitOne();
         }
 
-        public IObservedProcess? GetProcessById(int id) => Processes.FirstOrDefault(p => p.Id == id);
+        public IObservedProcess? GetProcessById(int id)
-        private void Monitor(object? state)
         {
-            if (state is not ManualResetEvent monitorReadyEvent)
+            lock (_processesLock)
-                return;
+                return Processes.FirstOrDefault(p => p.Id == id);
-            
+        }
-            monitorReadyEvent.Set();
 
+        private void Monitor()
+        {
             while (!_cancellationTokenSource.IsCancellationRequested)
+            {
+                lock (_processesLock)
                 {
                     IEnumerable<Process> processes = Process.GetProcesses();
                     foreach (var process in processes)
@@ -71,6 +73,7 @@ namespace Lib.ProcessManaging
                         Processes.Remove(observedProcess);
                         ProcessExited?.Invoke(this, observedProcess);
                     }
+                }
 
                 Thread.Sleep(1000);
             }
@@ -81,11 +84,12 @@ namespace Lib.ProcessManaging
         
         public void Dispose()
         {
-            Processes.Clear();
-            
             _cancellationTokenSource.Cancel();
             _cancellationTokenSource.Dispose();
             _monitorThread = null;
+            
+            lock (_processesLock) 
+                Processes.Clear();
         }
     }
 }