public void ReadWrite_TimeoutException()
{
bool timedout = false;
var name = Guid.NewGuid().ToString();
byte[] data = new byte[1024];
byte[] readData = new byte[1024];
using (var buf = new BufferReadWrite(name, 1024))
using (var buf2 = new BufferReadWrite(name))
{
// Set a small timeout to speed up the test
buf2.ReadWriteTimeout = 0;
// Introduce possible deadlock by acquiring without releasing the write lock.
buf.AcquireWriteLock();
// We want the AcquireReadLock to fail
if (!buf2.AcquireReadLock(1))
{
try
{
// Read should timeout with TimeoutException because buf.ReleaseWriteLock has not been called
buf2.Read(readData);
}
catch (TimeoutException)
{
timedout = true;
}
}
Assert.AreEqual(true, timedout, "The TimeoutException was not thrown.");
// Remove the deadlock situation, by releasing the write lock...
buf.ReleaseWriteLock();
// ...and ensure that we can now read the data
if (buf.AcquireReadLock(1))
{
buf2.Read(readData);
}
else
{
Assert.Fail("Failed to acquire read lock after releasing write lock.");
}
}
}
