PartitionedStreamMerger.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Linq / Parallel / QueryOperators / PartitionedStreamMerger.cs / 1305376 / PartitionedStreamMerger.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
// =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
// 
// PartitionedStreamMerger.cs 
//
// [....] 
//
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

using System.Threading.Tasks; 
using System.Diagnostics.Contracts;
 
namespace System.Linq.Parallel 
{
    ///  
    /// Partitioned stream recipient that will merge the results.
    /// 
    internal class PartitionedStreamMerger : IPartitionedStreamRecipient
    { 
        private bool m_forEffectMerge;
        private ParallelMergeOptions m_mergeOptions; 
        private bool m_isOrdered; 
        private MergeExecutor m_mergeExecutor = null;
        private TaskScheduler m_taskScheduler; 
        private int m_queryId; // ID of the current query execution

        private CancellationState m_cancellationState;
 
#if DEBUG
            private bool m_received = false; 
#endif 
        // Returns the merge executor which merges the received partitioned stream.
        internal MergeExecutor MergeExecutor 
        {
            get
            {
#if DEBUG 
                Contract.Assert(m_received, "Cannot return the merge executor because Receive() has not been called yet.");
#endif 
                return m_mergeExecutor; 
            }
        } 

        internal PartitionedStreamMerger(bool forEffectMerge, ParallelMergeOptions mergeOptions, TaskScheduler taskScheduler, bool outputOrdered,
            CancellationState cancellationState, int queryId)
        { 
            m_forEffectMerge = forEffectMerge;
            m_mergeOptions = mergeOptions; 
            m_isOrdered = outputOrdered; 
            m_taskScheduler = taskScheduler;
            m_cancellationState = cancellationState; 
            m_queryId = queryId;
        }

        public void Receive(PartitionedStream partitionedStream) 
        {
#if DEBUG 
                m_received = true; 
#endif
            m_mergeExecutor = MergeExecutor.Execute( 
                partitionedStream, m_forEffectMerge, m_mergeOptions, m_taskScheduler, m_isOrdered, m_cancellationState, m_queryId);

            TraceHelpers.TraceInfo("[timing]: {0}: finished opening - QueryOperator<>::GetEnumerator", DateTime.Now.Ticks);
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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