support GrpcEnvironment.KillServersAsync

1 files changed, 15 insertions, 0 deletions

diff --git a/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs b/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs
index 8643abf536..a446c1f99f 100644
--- a/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs
+++ b/src/csharp/Grpc.Core/Internal/GrpcThreadPool.cs
@@ -114,6 +114,21 @@ namespace Grpc.Core.Internal
             });
         }
 
+        /// <summary>
+        /// Returns true if there is at least one thread pool thread that hasn't
+        /// already stopped.
+        /// Threads can either stop because all completion queues shut down or
+        /// because all foreground threads have already shutdown and process is
+        /// going to exit.
+        /// </summary>
+        internal bool IsAlive
+        {
+            get
+            {
+                return threads.Any(t => t.ThreadState != ThreadState.Stopped);
+            }
+        }
+
         internal IReadOnlyCollection<CompletionQueueSafeHandle> CompletionQueues
         {
             get