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ReaderWriterLock::IsWriterLockHeld Property

.NET Framework (current version)
 

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

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

C#
C++
F#
VB
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public:
property bool IsWriterLockHeld {
	bool get();
}

Property Value

Type: System::Boolean

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

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#
C++
VB
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using namespace System;
using namespace System::Threading;
int main()
{
   ReaderWriterLock^ rwLock = gcnew 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." );
   }
}

.NET Framework
Available since 1.1
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