public async Task Unlocked_PermitsMultipleReaderLocks()
{
var @lock = new AsyncKeyedLock <int>();
await @lock.ReaderLockAsync(0);
await @lock.ReaderLockAsync(0);
}
public async Task ReaderLocked_ReaderReleased_ReaderAndWriterWaiting_DoesNotReleaseReaderOrWriter()
{
var @lock = new AsyncKeyedLock <int>();
Task readLock, writeLock;
await @lock.ReaderLockAsync(0);
using (await @lock.ReaderLockAsync(0))
{
writeLock = @lock.WriterLockAsync(0);
readLock = @lock.ReaderLockAsync(0);
}
await Task.WhenAll(AsyncHelper.NeverCompletesAsync(writeLock), AsyncHelper.NeverCompletesAsync(readLock));
}
public async Task ReadLocked_PreventsWriterLock()
{
var @lock = new AsyncKeyedLock <int>();
await @lock.ReaderLockAsync(0);
Task <IDisposable> task = @lock.WriterLockAsync(0);
await AsyncHelper.NeverCompletesAsync(task);
}
public async Task WriteLocked_PreventsReaderLock()
{
var @lock = new AsyncKeyedLock <int>();
await @lock.WriterLockAsync(0);
var task = @lock.ReaderLockAsync(0);
await AsyncHelper.NeverCompletesAsync(task);
}
public async Task LockReleased_WriteTakesPriorityOverRead()
{
var @lock = new AsyncKeyedLock <int>();
Task writeLock, readLock;
using (await @lock.WriterLockAsync(0))
{
readLock = @lock.ReaderLockAsync(0);
writeLock = @lock.WriterLockAsync(0);
}
await writeLock;
await AsyncHelper.NeverCompletesAsync(readLock);
}