96 lines
3.6 KiB
C#
96 lines
3.6 KiB
C#
#region Copyright notice and license
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// Copyright 2015, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#endregion
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using Grpc.Core.Utils;
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namespace Grpc.Core.Internal
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{
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internal delegate void OpCompletionDelegate(bool success);
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internal delegate void BatchCompletionDelegate(bool success, BatchContextSafeHandle ctx);
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internal class CompletionRegistry
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{
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readonly GrpcEnvironment environment;
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readonly ConcurrentDictionary<IntPtr, OpCompletionDelegate> dict = new ConcurrentDictionary<IntPtr, OpCompletionDelegate>();
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public CompletionRegistry(GrpcEnvironment environment)
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{
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this.environment = environment;
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}
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public void Register(IntPtr key, OpCompletionDelegate callback)
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{
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environment.DebugStats.PendingBatchCompletions.Increment();
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Preconditions.CheckState(dict.TryAdd(key, callback));
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}
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public void RegisterBatchCompletion(BatchContextSafeHandle ctx, BatchCompletionDelegate callback)
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{
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OpCompletionDelegate opCallback = ((success) => HandleBatchCompletion(success, ctx, callback));
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Register(ctx.Handle, opCallback);
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}
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public OpCompletionDelegate Extract(IntPtr key)
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{
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OpCompletionDelegate value;
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Preconditions.CheckState(dict.TryRemove(key, out value));
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environment.DebugStats.PendingBatchCompletions.Decrement();
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return value;
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}
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private static void HandleBatchCompletion(bool success, BatchContextSafeHandle ctx, BatchCompletionDelegate callback)
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{
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try
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{
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callback(success, ctx);
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}
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catch (Exception e)
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{
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Console.WriteLine("Exception occured while invoking completion delegate: " + e);
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}
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finally
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{
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if (ctx != null)
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{
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ctx.Dispose();
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}
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}
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}
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}
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}
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