no progress in matrix parallel

StgSharp.Common/Mathematics/Linear/MatrixParallel.cs

@@ -45,23 +45,24 @@ namespace StgSharp.Mathematics
     internal static class MatrixParallel
     {
 
-        private static Thread[] _threads;
-        private static Channel<IntPtr> _taskChannel = Channel.CreateUnbounded<IntPtr>();
+        private static readonly Channel<IntPtr> _taskChannel = Channel.CreateUnbounded<IntPtr>();
         private static int _paraState;
 
+        private static IReadOnlyList<Thread> _threads;
+
         public static void Init()
         {
             int count = Environment.ProcessorCount - 4;
             count = count < 0 ? 1 : count;
-            _threads = new Thread[count];
-            Interlocked.Exchange(ref _paraState, 1);
+            List<Thread> _t = new(count);
+            _threads = _t;
             for (int i = 0; i < count; i++)
             {
-                _threads[i] = new(MatrixParallelCycle)
-                {
-                    IsBackground = true
-                };
-                _threads[i].Start();
+                _t.Add(new(MatrixParallelCycle)
+                    {
+                        IsBackground = true
+                    });
+                _t[i].Start();
             }
         }
 
@@ -75,13 +76,8 @@ namespace StgSharp.Mathematics
         private static unsafe void MatrixParallelCycle()
         {
             Thread t_cur = Thread.CurrentThread;
-            while (_taskChannel.Reader.TryRead(out IntPtr ptr))
-            {
-                MatrixParallelTask* taskHandle = (MatrixParallelTask*)ptr;
-
-                // Execute the task directly
-                taskHandle->Execute();
-            }
+            int index = _threads.ToList().IndexOf(t_cur);
+            while (_taskChannel.Reader.TryRead(out IntPtr ptr)) { }
         }
 
     }