67 lines
2.3 KiB
C#
67 lines
2.3 KiB
C#
// ExecutingMessageBox.cs
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//
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// Copyright (c) 2011 Jérémie "garuma" Laval
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// Copyright (c) 2012 Petr Onderka
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System.Collections.Concurrent;
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namespace System.Threading.Tasks.Dataflow {
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/// <summary>
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/// Message box for executing blocks with synchrnous actions.
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/// </summary>
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/// <typeparam name="TInput">Type of the item the block is processing.</typeparam>
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class ExecutingMessageBox<TInput> : ExecutingMessageBoxBase<TInput> {
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readonly Func<bool> processItem;
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public ExecutingMessageBox (
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ITargetBlock<TInput> target, BlockingCollection<TInput> messageQueue,
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CompletionHelper compHelper, Func<bool> externalCompleteTester,
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Func<bool> processItem, Action outgoingQueueComplete,
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ExecutionDataflowBlockOptions options)
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: base (
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target, messageQueue, compHelper, externalCompleteTester,
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outgoingQueueComplete, options)
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{
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this.processItem = processItem;
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}
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/// <summary>
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/// Processes the input queue of the block.
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/// </summary>
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protected override void ProcessQueue ()
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{
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StartProcessQueue ();
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try {
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int i = 0;
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while (CanRun (i)) {
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if (!processItem ())
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break;
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i++;
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}
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} catch (Exception e) {
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CompHelper.RequestFault (e, false);
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}
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FinishProcessQueue ();
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}
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}
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} |