//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void concurrentlyPublishedEventsMustAllBeProcessed()
internal virtual void ConcurrentlyPublishedEventsMustAllBeProcessed()
{
assertTimeout(ofSeconds(10), () =>
{
EventConsumer consumer = new EventConsumer();
System.Threading.CountdownEvent startLatch = new System.Threading.CountdownEvent(1);
const int threads = 10;
const int iterations = 2_000;
AsyncEvents <Event> asyncEvents = new AsyncEvents <Event>(consumer, AsyncEvents.Monitor_Fields.None);
_executor.submit(asyncEvents);
ExecutorService threadPool = Executors.newFixedThreadPool(threads);
ThreadStart runner = () =>
{
try
{
startLatch.await();
}
catch (InterruptedException e)
{
throw new Exception(e);
}
for (int i = 0; i < iterations; i++)
{
asyncEvents.Send(new Event());
}
};
for (int i = 0; i < threads; i++)
{
threadPool.submit(runner);
}
startLatch.countDown();
Thread thisThread = Thread.CurrentThread;
int eventCount = threads * iterations;
try
{
for (int i = 0; i < eventCount; i++)
{
Event @event = consumer.Poll(1, TimeUnit.SECONDS);
if (@event == null)
{
i--;
}
else
{
assertThat(@event.ProcessedBy, @is(not(thisThread)));
}
}
}
finally
{
asyncEvents.Shutdown();
threadPool.shutdown();
}
});
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @RepeatedTest(50) void writeLockingCursorMustThrowWhenLockingPageRacesWithUnmapping()
internal virtual void WriteLockingCursorMustThrowWhenLockingPageRacesWithUnmapping()
{
assertTimeout(ofMillis(SEMI_LONG_TIMEOUT_MILLIS), () =>
{
// Even if we block in pin, waiting to grab a lock on a page that is
// already locked, and the PagedFile is concurrently closed, then we
// want to have an exception thrown, such that we race and get a
// page that is writable after the PagedFile has been closed.
// This is important because closing a PagedFile implies flushing, thus
// ensuring that all changes make it to storage.
// Conversely, we don't have to go to the same lengths for read locked
// pages, because those are never changed. Not by us, anyway.
File file = file("a");
generateFileWithRecords(file, recordsPerFilePage * 2, recordSize);
getPageCache(fs, maxPages, PageCacheTracer.NULL, PageCursorTracerSupplier.NULL);
PagedFile pf = pageCache.map(file, filePageSize);
System.Threading.CountdownEvent hasLockLatch = new System.Threading.CountdownEvent(1);
System.Threading.CountdownEvent unlockLatch = new System.Threading.CountdownEvent(1);
System.Threading.CountdownEvent secondThreadGotLockLatch = new System.Threading.CountdownEvent(1);
AtomicBoolean doneWriteSignal = new AtomicBoolean();
AtomicBoolean doneCloseSignal = new AtomicBoolean();
executor.submit(() =>
{
using (PageCursor cursor = pf.Io(0, PF_SHARED_WRITE_LOCK))
{
cursor.Next();
hasLockLatch.countDown();
unlockLatch.await();
}
return(null);
});
hasLockLatch.await(); // A write lock is now held on page 0.
Future <object> takeLockFuture = executor.submit(() =>
{
using (PageCursor cursor = pf.Io(0, PF_SHARED_WRITE_LOCK))
{
cursor.Next();
doneWriteSignal.set(true);
secondThreadGotLockLatch.await();
}
return(null);
});
Future <object> closeFuture = executor.submit(() =>
{
pf.Close();
doneCloseSignal.set(true);
return(null);
});
try
{
Thread.yield();
closeFuture.get(50, TimeUnit.MILLISECONDS);
fail("Expected a TimeoutException here");
}
catch (TimeoutException)
{
// As expected, the close cannot not complete while an write
// lock is held
}
// Now, both the close action and a grab for an write page lock is
// waiting for our first thread.
// When we release that lock, we should see that either close completes
// and our second thread, the one blocked on the write lock, gets an
// exception, or we should see that the second thread gets the lock,
// and then close has to wait for that thread as well.
unlockLatch.countDown(); // The race is on.
bool anyDone;
do
{
Thread.yield();
anyDone = doneWriteSignal.get() | doneCloseSignal.get();
} while (!anyDone);
if (doneCloseSignal.get())
{
closeFuture.get(1000, TimeUnit.MILLISECONDS);
// The closeFuture got it first, so the takeLockFuture should throw.
try
{
secondThreadGotLockLatch.countDown(); // only to prevent incorrect programs from deadlocking
takeLockFuture.get();
fail("Expected takeLockFuture.get() to throw an ExecutionException");
}
catch (ExecutionException e)
{
Exception cause = e.InnerException;
assertThat(cause, instanceOf(typeof(FileIsNotMappedException)));
assertThat(cause.Message, startsWith("File has been unmapped"));
}
}
else
{
assertTrue(doneWriteSignal.get());
// The takeLockFuture got it first, so the closeFuture should
// complete when we release the latch.
secondThreadGotLockLatch.countDown();
closeFuture.get(20000, TimeUnit.MILLISECONDS);
}
});
}
public override void rotationCompleted(Stream @out)
{
_latch.countDown();
}
