1  using System;
 2  using System.Threading;
 3  
 4  namespace Ryujinx.Graphics.GAL.Multithreading
 5  {
 6      static class ThreadedHelpers
 7      {
 8          public static void SpinUntilNonNull<T>(ref T obj) where T : class
 9          {
10              Span<SpinWait> spinWait = stackalloc SpinWait[1];
11  
12              while (obj == null)
13              {
14                  spinWait[0].SpinOnce(-1);
15              }
16          }
17  
18          public static void SpinUntilExchange(ref int target, int value, int comparand)
19          {
20              Span<SpinWait> spinWait = stackalloc SpinWait[1];
21  
22              while (Interlocked.CompareExchange(ref target, value, comparand) != comparand)
23              {
24                  spinWait[0].SpinOnce(-1);
25              }
26          }
27      }
28  }