ReaderWriterLockSlim.IsUpgradeableReadLockHeld Property
Definition
Important
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Gets a value that indicates whether the current thread has entered the lock in upgradeable mode.
public:
property bool IsUpgradeableReadLockHeld { bool get(); };public bool IsUpgradeableReadLockHeld { get; }member this.IsUpgradeableReadLockHeld : boolPublic ReadOnly Property IsUpgradeableReadLockHeld As BooleanProperty Value
true if the current thread has entered upgradeable mode; otherwise, false.
Examples
The following example shows how to use the IsUpgradeableReadLockHeld property to generate an assert if the current thread has entered upgradeable mode unexpectedly.
using (ReaderWriterLockSlim rwLock = new ReaderWriterLockSlim()) {
Using rwLock As New ReaderWriterLockSlim()
Debug.Assert(!rwLock.IsUpgradeableReadLockHeld,
String.Format("Thread {0} has entered the upgradeable read lock while MyFunction is still executing.",
Thread.CurrentThread.ManagedThreadId));
Debug.Assert(Not rwLock.IsUpgradeableReadLockHeld, _
String.Format("Thread {0} has entered the upgradeable read lock while MyFunction is still executing.", _
Thread.CurrentThread.ManagedThreadId))
Remarks
This property is intended for use in asserts or for other debugging purposes. Do not use it to control the flow of program execution.
Applies to
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