ReaderWriterLockSlim.WaitingReadCount Property

Definition

Namespace:

System.Threading

Assembly:

System.Threading.dll

Source:

ReaderWriterLockSlim.cs

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

public:
 property int WaitingReadCount { int get(); };

public int WaitingReadCount { get; }

member this.WaitingReadCount : int

Public ReadOnly Property WaitingReadCount As Integer

Property Value

Int32

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

Examples

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

using (ReaderWriterLockSlim rwLock = new ReaderWriterLockSlim()) {

Using rwLock As New ReaderWriterLockSlim()

int waitingReadCt = rwLock.WaitingReadCount;
if (waitingReadCt > READ_THRESHOLD)
{
    performanceLog.WriteEntry(String.Format(
        "{0} blocked reader threads; exceeds recommended maximum.", 
        waitingReadCt));
}

Dim waitingReadCt As Integer = rwLock.WaitingReadCount
If waitingReadCt > READ_THRESHOLD Then
    performanceLog.WriteEntry(String.Format( _
        "{0} blocked reader threads; exceeds recommended maximum.", _
        waitingReadCt))
End If

Remarks

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.