ReaderWriterLockSlim.WaitingWriteCount Property


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Gets the total number of threads that are waiting to enter the lock in write mode.

Namespace:   System.Threading
Assembly:  System.Core (in System.Core.dll)

public int WaitingWriteCount { get; }

Property Value

Type: System.Int32

The total number of threads that are waiting to enter write mode.

Use this property only for debugging, profiling, and logging purposes, and not to control the behavior of an algorithm. The results can change as soon as they have been calculated. Therefore, it is not safe to make decisions based on this property.

The following example shows how to use the WaitingWriteCount property to generate an event log entry if the number of threads that are blocked, waiting to enter write mode, exceeds a threshold.

using (ReaderWriterLockSlim rwLock = new ReaderWriterLockSlim()) {
int waitingWriteCt = rwLock.WaitingWriteCount;
if (waitingWriteCt > WRITE_THRESHOLD)
        "{0} blocked writer threads; exceeds recommended maximum.", 

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
Return to top