Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core/Profiling/ProfilerScope.cs

Index: third_party/grpc/src/csharp/Grpc.Core/Profiling/ProfilerScope.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf.Test/SampleEnum.cs b/third_party/grpc/src/csharp/Grpc.Core/Profiling/ProfilerScope.cs
similarity index 69%
copy from third_party/protobuf/csharp/src/Google.Protobuf.Test/SampleEnum.cs
copy to third_party/grpc/src/csharp/Grpc.Core/Profiling/ProfilerScope.cs
index 77447afa127340046298081d9bfca4dd51c14f6c..413f3a1a358bba66b42bffca42373c89fcf50bb6 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf.Test/SampleEnum.cs
+++ b/third_party/grpc/src/csharp/Grpc.Core/Profiling/ProfilerScope.cs
@@ -1,7 +1,7 @@
 #region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2015 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -28,15 +28,33 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 #endregion
-    
-namespace Google.Protobuf
+
+using System;
+using System.IO;
+using System.Threading;
+using Grpc.Core.Internal;
+
+namespace Grpc.Core.Profiling
 {
-    // Just a sample enum with positive and negative values to be used in tests.
-    internal enum SampleEnum
+    // Allows declaring Begin and End of a profiler scope with a using statement.
+    // declared as struct for better performance.
+    internal struct ProfilerScope : IDisposable
     {
-        NegativeValue = -2,
-        None = 0,
-        PositiveValue = 3
+        readonly IProfiler profiler;
+        readonly string tag;
+
+        public ProfilerScope(IProfiler profiler, string tag)
+        {
+            this.profiler = profiler;
+            this.tag = tag;
+            this.profiler.Begin(this.tag);
+        }
+            
+        public void Dispose()
+        {
+            profiler.End(tag);
+        }
     }
 }