public static async Task <IDisposable> LockAsync(this SemaphoreSlim semaphore, CancellationToken cancellationToken)
{
var res = new SemaphoreLock(semaphore);
try {
await semaphore.WaitAsync(cancellationToken);
var res2 = res;
res = null;
return(res2);
} finally {
res?.Reset();
}
}
public static IDisposable Lock(this SemaphoreSlim semaphore)
{
var res = new SemaphoreLock(semaphore);
try {
try {
semaphore.Wait();
var res2 = res;
res = null;
return(res2);
} finally {
res?.Reset();
}
} catch (ObjectDisposedException ex) {
throw new OperationCanceledException("semaphore was disposed", ex);
}
}
public static async Task <IDisposable> LockAsync(this SemaphoreSlim semaphore, CancellationToken cancellationToken)
{
var res = new SemaphoreLock(semaphore);
try {
try {
await semaphore.WaitAsync(cancellationToken);
var res2 = res;
res = null;
return(res2);
} finally {
res?.Reset();
}
} catch (ObjectDisposedException ex) {
throw new OperationCanceledException("semaphore was disposed", ex);
}
}