public virtual void TestAccquireReleaseRace()
{
DocumentsWriterStallControl ctrl = new DocumentsWriterStallControl();
ctrl.UpdateStalled(false);
AtomicBoolean stop = new AtomicBoolean(false);
AtomicBoolean checkPoint = new AtomicBoolean(true);
int numStallers = AtLeast(1);
int numReleasers = AtLeast(1);
int numWaiters = AtLeast(1);
var sync = new Synchronizer(numStallers + numReleasers, numStallers + numReleasers + numWaiters);
var threads = new ThreadJob[numReleasers + numStallers + numWaiters];
IList <Exception> exceptions = new SynchronizedList <Exception>();
for (int i = 0; i < numReleasers; i++)
{
threads[i] = new Updater(stop, checkPoint, ctrl, sync, true, exceptions);
}
for (int i = numReleasers; i < numReleasers + numStallers; i++)
{
threads[i] = new Updater(stop, checkPoint, ctrl, sync, false, exceptions);
}
for (int i = numReleasers + numStallers; i < numReleasers + numStallers + numWaiters; i++)
{
threads[i] = new Waiter(stop, checkPoint, ctrl, sync, exceptions);
}
Start(threads);
int iters = AtLeast(10000);
float checkPointProbability = TestNightly ? 0.5f : 0.1f;
for (int i = 0; i < iters; i++)
{
if (checkPoint)
{
Assert.IsTrue(sync.updateJoin.Wait(new TimeSpan(0, 0, 0, 10)), "timed out waiting for update threads - deadlock?");
if (exceptions.Count > 0)
{
foreach (Exception throwable in exceptions)
{
Console.WriteLine(throwable.ToString());
Console.Write(throwable.StackTrace);
}
Assert.Fail("got exceptions in threads");
}
if (ctrl.HasBlocked && ctrl.IsHealthy)
{
AssertState(numReleasers, numStallers, numWaiters, threads, ctrl);
}
checkPoint.Value = (false);
sync.waiter.Signal();
sync.leftCheckpoint.Wait();
}
Assert.IsFalse(checkPoint);
Assert.AreEqual(0, sync.waiter.CurrentCount);
if (checkPointProbability >= (float)Random.NextDouble())
{
sync.Reset(numStallers + numReleasers, numStallers + numReleasers + numWaiters);
checkPoint.Value = (true);
}
}
if (!checkPoint)
{
sync.Reset(numStallers + numReleasers, numStallers + numReleasers + numWaiters);
checkPoint.Value = (true);
}
Assert.IsTrue(sync.updateJoin.Wait(new TimeSpan(0, 0, 0, 10)));
AssertState(numReleasers, numStallers, numWaiters, threads, ctrl);
checkPoint.Value = (false);
stop.Value = (true);
sync.waiter.Signal();
sync.leftCheckpoint.Wait();
for (int i = 0; i < threads.Length; i++)
{
ctrl.UpdateStalled(false);
threads[i].Join(2000);
if (threads[i].IsAlive && threads[i] is Waiter)
{
if (threads[i].State == ThreadState.WaitSleepJoin)
{
Assert.Fail("waiter is not released - anyThreadsStalled: " + ctrl.AnyStalledThreads());
}
}
}
}
public virtual void TestThreadSafety()
{
Directory dir = NewDirectory();
// NOTE: this also controls the number of threads!
int n = TestUtil.NextInt32(Random, 20, 40);
IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)));
for (int i = 0; i < n; i++)
{
writer.AddDocument(CreateDocument(i, 3));
}
writer.ForceMerge(1);
writer.Dispose();
TestReopen test = new TestReopenAnonymousClass3(this, dir, n);
IList <ReaderCouple> readers = new SynchronizedList <ReaderCouple>();
DirectoryReader firstReader = DirectoryReader.Open(dir);
DirectoryReader reader = firstReader;
ReaderThread[] threads = new ReaderThread[n];
ISet <DirectoryReader> readersToClose = new JCG.HashSet <DirectoryReader>().AsConcurrent();
for (int i = 0; i < n; i++)
{
if (i % 2 == 0)
{
DirectoryReader refreshed = DirectoryReader.OpenIfChanged(reader);
if (refreshed != null)
{
readersToClose.Add(reader);
reader = refreshed;
}
}
DirectoryReader r = reader;
int index = i;
ReaderThreadTask task;
if (i < 4 || (i >= 10 && i < 14) || i > 18)
{
task = new ReaderThreadTaskAnonymousClass(this, test, readers, readersToClose, r, index);
}
else
{
task = new ReaderThreadTaskAnonymousClass2(this, readers);
}
threads[i] = new ReaderThread(task);
threads[i].Start();
}
lock (this)
{
Monitor.Wait(this, TimeSpan.FromMilliseconds(1000));
}
for (int i = 0; i < n; i++)
{
if (threads[i] != null)
{
threads[i].StopThread();
}
}
for (int i = 0; i < n; i++)
{
if (threads[i] != null)
{
threads[i].Join();
if (threads[i].error != null)
{
string msg = "Error occurred in thread " + threads[i].Name + ":\n" + threads[i].error.Message;
Assert.Fail(msg);
}
}
}
foreach (DirectoryReader readerToClose in readersToClose)
{
readerToClose.Dispose();
}
firstReader.Dispose();
reader.Dispose();
foreach (DirectoryReader readerToClose in readersToClose)
{
AssertReaderClosed(readerToClose, true);
}
AssertReaderClosed(reader, true);
AssertReaderClosed(firstReader, true);
dir.Dispose();
}
