ParallelLoopState.cs :  » 2.6.4-mono-.net-core » System.Threading » System » Threading » Tasks » C# / CSharp Open Source

#if NET_4_0
// ParallelState.cs
//
// Copyright (c) 2008 Jrmie "Garuma" Laval
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//

using System;
using System.Threading;

namespace System.Threading.Tasks{
  public class ParallelLoopState
  {
    internal class ExternalInfos
    {
      public AtomicBoolean IsStopped = new AtomicBoolean ();
      public AtomicBoolean IsBroken = new AtomicBoolean ();
      public volatile bool IsExceptional;
      public long? LowestBreakIteration;
    }
    
    ExternalInfos extInfos;
    
    internal ParallelLoopState (ExternalInfos extInfos)
    {
      this.extInfos = extInfos;
    }
    
    public bool IsStopped {
      get {
        return extInfos.IsStopped.Value;
      }
    }
    
    public bool IsExceptional {
      get {
        return extInfos.IsExceptional;
      }
    }
    
    public long? LowestBreakIteration {
      get {
        return extInfos.LowestBreakIteration;
      }
    }
    
    internal int CurrentIteration {
      get;
      set;
    }
    
    public bool ShouldExitCurrentIteration {
      get {
        return IsExceptional || IsStopped;
      }
    }
    
    public void Break ()
    {
      bool result = extInfos.IsBroken.Exchange (true);
      if (!result)
        extInfos.LowestBreakIteration = CurrentIteration;
    }
    
    public void Stop ()
    {
      extInfos.IsStopped.Exchange (true);
    }
  }
  
}
#endif