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

//
// System.Threading.LockCookie.cs
//
// Author:
//   Dick Porter (dick@ximian.com)
//
// (C) Ximian, Inc.  http://www.ximian.com
//

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// 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.Runtime.InteropServices;

namespace System.Threading{
  [ComVisible (true)]
  public struct LockCookie
  {
    internal int ThreadId;
    internal int ReaderLocks;
    internal int WriterLocks;
    
    internal LockCookie (int thread_id)
    {
      ThreadId = thread_id;
      ReaderLocks = 0;
      WriterLocks = 0;
    }
    
    internal LockCookie (int thread_id, int reader_locks, int writer_locks)
    {
      ThreadId = thread_id;
      ReaderLocks = reader_locks;
      WriterLocks = writer_locks;
    }

    public override int GetHashCode ()
    {
      return(base.GetHashCode ());
    }

    public bool Equals (LockCookie obj)
    {
      if (this.ThreadId == obj.ThreadId &&
          this.ReaderLocks == obj.ReaderLocks &&
          this.WriterLocks == obj.WriterLocks) {
        return(true);
      } else {
        return(false);
      }
    }
    
    public override bool Equals (Object obj)
    {
      if (!(obj is LockCookie)) {
        return(false);
      }
      
      return(obj.Equals (this));
    }

    public static bool operator == (LockCookie a, LockCookie b)
    {
      return a.Equals (b);
    }

    public static bool operator != (LockCookie a, LockCookie b)
    {
      return !a.Equals (b);
    }
  }
}