ReaderWriterLock.IsWriterLockHeld Property

Definition

Namespace:

System.Threading

Assemblies:

netstandard.dll, System.Threading.dll

Source:

ReaderWriterLock.cs

Gets a value indicating whether the current thread holds the writer lock.

C#

public bool IsWriterLockHeld { get; }

Property Value

Boolean

true if the current thread holds the writer lock; otherwise, false.

Examples

The following code example demonstrates that when an attempt is made to acquire a reader lock on a thread that has a writer lock, ReaderWriterLock does not grant the reader lock but instead increments the lock count on the writer lock.

C#

using System;
using System.Threading;

class LockHeld
{
    static void Main()
    {
        ReaderWriterLock rwLock = new ReaderWriterLock();

        rwLock.AcquireWriterLock(Timeout.Infinite);
        rwLock.AcquireReaderLock(Timeout.Infinite);

        if(rwLock.IsReaderLockHeld)
        {
            Console.WriteLine("Reader lock held.");
            rwLock.ReleaseReaderLock();
        }
        else if(rwLock.IsWriterLockHeld)
        {
            Console.WriteLine("Writer lock held.");
            rwLock.ReleaseWriterLock();
        }
        else
        {
            Console.WriteLine("No locks held.");
        }

        if(rwLock.IsReaderLockHeld)
        {
            Console.WriteLine("Reader lock held.");
            rwLock.ReleaseReaderLock();
        }
        else if(rwLock.IsWriterLockHeld)
        {
            Console.WriteLine("Writer lock held.");
            rwLock.ReleaseWriterLock();
        }
        else
        {
            Console.WriteLine("No locks held.");
        }
    }
}

Applies to

See also

• Managed Threading
• ReaderWriterLock