diff options
Diffstat (limited to 'src/csharp/Grpc.Core/Channel.cs')
-rw-r--r-- | src/csharp/Grpc.Core/Channel.cs | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/src/csharp/Grpc.Core/Channel.cs b/src/csharp/Grpc.Core/Channel.cs index 1803920662..f9925a8a76 100644 --- a/src/csharp/Grpc.Core/Channel.cs +++ b/src/csharp/Grpc.Core/Channel.cs @@ -127,6 +127,20 @@ namespace Grpc.Core } } + // cached handler for watch connectivity state + static readonly BatchCompletionDelegate WatchConnectivityStateHandler = (success, ctx, state) => + { + var tcs = (TaskCompletionSource<object>) state; + if (success) + { + tcs.SetResult(null); + } + else + { + tcs.SetCanceled(); + } + }; + /// <summary> /// Returned tasks completes once channel state has become different from /// given lastObservedState. @@ -138,18 +152,8 @@ namespace Grpc.Core "Shutdown is a terminal state. No further state changes can occur."); var tcs = new TaskCompletionSource<object>(); var deadlineTimespec = deadline.HasValue ? Timespec.FromDateTime(deadline.Value) : Timespec.InfFuture; - var handler = new BatchCompletionDelegate((success, ctx) => - { - if (success) - { - tcs.SetResult(null); - } - else - { - tcs.SetCanceled(); - } - }); - handle.WatchConnectivityState(lastObservedState, deadlineTimespec, completionQueue, handler); + // pass "tcs" as "state" for WatchConnectivityStateHandler. + handle.WatchConnectivityState(lastObservedState, deadlineTimespec, completionQueue, WatchConnectivityStateHandler, tcs); return tcs.Task; } |