ReaderWriterLock.ReleaseReaderLock Methode

public:
 void ReleaseReaderLock();

public void ReleaseReaderLock();

member this.ReleaseReaderLock : unit -> unit

Public Sub ReleaseReaderLock ()

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie eine Lese-/Lesesperre erworben und freigegeben wird und wie die Ausnahme behandelt wird, die ausgelöst wird, wenn eine Anforderung ein Zeitüberschreitung auftritt.

Dieser Code ist Teil eines größeren Beispiels, das für die ReaderWriterLock Klasse bereitgestellt wird.

// The complete code is located in the ReaderWriterLock class topic.
using System;
using System.Threading;

public class Example
{
   static ReaderWriterLock rwl = new ReaderWriterLock();
   // Define the shared resource protected by the ReaderWriterLock.
   static int resource = 0;

' The complete code is located in the ReaderWriterLock class topic.
Imports System.Threading

Public Module Example
   Private rwl As New ReaderWriterLock()
   ' Define the shared resource protected by the ReaderWriterLock.
   Private resource As Integer = 0

// Request and release a reader lock, and handle time-outs.
static void ReadFromResource(int timeOut)
{
   try {
      rwl.AcquireReaderLock(timeOut);
      try {
         // It is safe for this thread to read from the shared resource.
         Display("reads resource value " + resource);
         Interlocked.Increment(ref reads);
      }
      finally {
         // Ensure that the lock is released.
         rwl.ReleaseReaderLock();
      }
   }
   catch (ApplicationException) {
      // The reader lock request timed out.
      Interlocked.Increment(ref readerTimeouts);
   }
}

' Request and release a reader lock, and handle time-outs.
Sub ReadFromResource(timeOut As Integer)
   Try
      rwl.AcquireReaderLock(timeOut)
      Try
         ' It's safe for this thread to read from the shared resource.
         Display("reads resource value " & resource)
         Interlocked.Increment(reads)
      Finally
         ' Ensure that the lock is released.
         rwl.ReleaseReaderLock()
      End Try
   Catch ex As ApplicationException
      ' The reader lock request timed out.
      Interlocked.Increment(readerTimeouts)
   End Try
End Sub

}

End Module

Hinweise

ReleaseReaderLock erhöht die Sperranzahl. Wenn die Anzahl null erreicht, wird die Sperre losgelassen.

Weitere Informationen

• Verwaltetes Thread-Management
• Readerwriterlock