public void TestWriterBlocksReader()
{
using (ILockStrategy l = LockFactory.Create())
{
Assert.IsTrue(l.TryRead(0));
l.ReleaseRead();
using (new ThreadedWriter(l))
Assert.IsFalse(l.TryRead(0));
Assert.IsTrue(l.TryRead(0));
l.ReleaseRead();
}
}
public override void TestWriteCounter()
{
using (ILockStrategy l = LockFactory.Create())
{
Assert.AreEqual(0, l.WriteVersion);
Assert.IsTrue(l.TryRead(0));
l.ReleaseRead();
Assert.AreEqual(0, l.WriteVersion);
Assert.IsTrue(l.TryWrite(0));
Assert.AreEqual(0, l.WriteVersion);
l.ReleaseWrite();
Assert.AreEqual(0, l.WriteVersion);
using (l.Write())
{
Assert.AreEqual(0, l.WriteVersion);
Assert.IsTrue(l.TryWrite(0));
// Once a nested write lock is acquired the real lock is obtained.
Assert.AreEqual(1, l.WriteVersion);
l.ReleaseWrite();
Assert.AreEqual(1, l.WriteVersion);
}
Assert.IsTrue(l.TryWrite(0));
l.ReleaseWrite();
Assert.AreEqual(1, l.WriteVersion);
}
}
public void TestTryRead()
{
using (ILockStrategy l = LockFactory.Create())
{
Assert.IsTrue(l.TryRead(0));
l.ReleaseRead();
}
}
/// <summary> Acquires the lock within the timeout or throws TimeoutException </summary>
/// <exception cref="System.TimeoutException"/>
public static ReadLock Acquire(ILockStrategy lck, int timeout)
{
if (!lck.TryRead(timeout))
{
throw new TimeoutException();
}
return(new ReadLock(lck, true));
}
public bool TryRead(int timeout)
{
if (!_lock.TryRead(timeout))
{
return(false);
}
AddThreadCount(1, 0);
return(true);
}
public bool TryRead(int timeout)
{
if (!_lock.TryRead(timeout))
{
return(false);
}
AddCount(ref _factory.MaxReaderCount, ref _factory.CurrentReaderCount, ref _factory.TotalReaderCount);
return(true);
}
public virtual void TestReaderAllowsReader()
{
using (ILockStrategy l = LockFactory.Create())
{
using (new ThreadedReader(l))
Assert.IsTrue(l.TryRead(0));
l.ReleaseRead();
}
}
public virtual void TestWriteCounter()
{
ILockStrategy l = LockFactory.Create();
int count = l.WriteVersion;
Assert.IsTrue(l.TryRead(0));
l.ReleaseRead();
Assert.AreEqual(count, l.WriteVersion);
Assert.IsTrue(l.TryWrite(0));
l.ReleaseWrite();
Assert.AreNotEqual(count, l.WriteVersion);
count = l.WriteVersion;
Assert.IsTrue(l.TryWrite(0));
l.ReleaseWrite();
Assert.AreNotEqual(count, l.WriteVersion);
}
/// <summary> Acquires a read lock on the resource </summary>
public ReadLock(ILockStrategy lck, int timeout)
{
_lock = lck;
_hasLock = lck.TryRead(timeout);
}
/// <summary> Acquires a read lock on the resource </summary>
public ReadLock(ILockStrategy lck, int timeout)
{
_lock = lck;
_hasLock = lck.TryRead(timeout);
}
/// <summary> Acquires the lock within the timeout or throws TimeoutException </summary>
/// <exception cref="System.TimeoutException"/>
public static ReadLock Acquire(ILockStrategy lck, int timeout)
{
if (!lck.TryRead(timeout)) throw new TimeoutException();
return new ReadLock(lck, true);
}