| #region Copyright notice and license |
| |
| // 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 |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // 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 |
| |
| using System; |
| using System.Collections.Concurrent; |
| using System.Collections.Generic; |
| using System.Runtime.InteropServices; |
| using Grpc.Core.Logging; |
| using Grpc.Core.Utils; |
| |
| namespace Grpc.Core.Internal |
| { |
| internal delegate void OpCompletionDelegate(bool success); |
| |
| internal delegate void BatchCompletionDelegate(bool success, BatchContextSafeHandle ctx); |
| |
| internal delegate void RequestCallCompletionDelegate(bool success, RequestCallContextSafeHandle ctx); |
| |
| internal class CompletionRegistry |
| { |
| static readonly ILogger Logger = GrpcEnvironment.Logger.ForType<CompletionRegistry>(); |
| |
| readonly GrpcEnvironment environment; |
| readonly ConcurrentDictionary<IntPtr, OpCompletionDelegate> dict = new ConcurrentDictionary<IntPtr, OpCompletionDelegate>(new IntPtrComparer()); |
| |
| public CompletionRegistry(GrpcEnvironment environment) |
| { |
| this.environment = environment; |
| } |
| |
| public void Register(IntPtr key, OpCompletionDelegate callback) |
| { |
| environment.DebugStats.PendingBatchCompletions.Increment(); |
| GrpcPreconditions.CheckState(dict.TryAdd(key, callback)); |
| } |
| |
| public void RegisterBatchCompletion(BatchContextSafeHandle ctx, BatchCompletionDelegate callback) |
| { |
| OpCompletionDelegate opCallback = ((success) => HandleBatchCompletion(success, ctx, callback)); |
| Register(ctx.Handle, opCallback); |
| } |
| |
| public void RegisterRequestCallCompletion(RequestCallContextSafeHandle ctx, RequestCallCompletionDelegate callback) |
| { |
| OpCompletionDelegate opCallback = ((success) => HandleRequestCallCompletion(success, ctx, callback)); |
| Register(ctx.Handle, opCallback); |
| } |
| |
| public OpCompletionDelegate Extract(IntPtr key) |
| { |
| OpCompletionDelegate value; |
| GrpcPreconditions.CheckState(dict.TryRemove(key, out value)); |
| environment.DebugStats.PendingBatchCompletions.Decrement(); |
| return value; |
| } |
| |
| private static void HandleBatchCompletion(bool success, BatchContextSafeHandle ctx, BatchCompletionDelegate callback) |
| { |
| try |
| { |
| callback(success, ctx); |
| } |
| catch (Exception e) |
| { |
| Logger.Error(e, "Exception occured while invoking batch completion delegate."); |
| } |
| finally |
| { |
| if (ctx != null) |
| { |
| ctx.Dispose(); |
| } |
| } |
| } |
| |
| private static void HandleRequestCallCompletion(bool success, RequestCallContextSafeHandle ctx, RequestCallCompletionDelegate callback) |
| { |
| try |
| { |
| callback(success, ctx); |
| } |
| catch (Exception e) |
| { |
| Logger.Error(e, "Exception occured while invoking request call completion delegate."); |
| } |
| finally |
| { |
| if (ctx != null) |
| { |
| ctx.Dispose(); |
| } |
| } |
| } |
| |
| /// <summary> |
| /// IntPtr doesn't implement <c>IEquatable{IntPtr}</c> so we need to use custom comparer to avoid boxing. |
| /// </summary> |
| private class IntPtrComparer : IEqualityComparer<IntPtr> |
| { |
| public bool Equals(IntPtr x, IntPtr y) |
| { |
| return x == y; |
| } |
| |
| public int GetHashCode(IntPtr obj) |
| { |
| return obj.GetHashCode(); |
| } |
| } |
| } |
| } |