public override void InjectFailure(params Type[] failureTypes)
{
int count;
int newCount;
do
{
count = _countDown.get();
newCount = count - 1;
} while (!_countDown.compareAndSet(count, newCount));
if (_resetCountDownOnFailure && newCount < 1)
{
Reset();
}
if (newCount == 0)
{
try
{
Thread.Sleep(10);
}
catch (InterruptedException e)
{
Console.WriteLine(e.ToString());
Console.Write(e.StackTrace);
}
ThrowOneOf(failureTypes);
}
}
/// <summary>
/// Move the client to the PREPARE state, unless it is already STOPPED.
/// </summary>
public void Prepare(Locks_Client client)
{
int currentValue;
int newValue;
do
{
currentValue = _clientState.get();
if (IsStopped(currentValue))
{
throw new LockClientStoppedException(client);
}
newValue = StateWithNewStatus(currentValue, _prepare);
} while (!_clientState.compareAndSet(currentValue, newValue));
}
internal virtual bool Increase()
{
while (true)
{
int pre = _count.get();
if (pre == DISPOSED_VALUE)
{
return(false);
}
else if (_count.compareAndSet(pre, pre + 1))
{
return(true);
}
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldNotStartOtherSamplingWhenSamplingAllTheIndexes()
public virtual void ShouldNotStartOtherSamplingWhenSamplingAllTheIndexes()
{
// given
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.atomic.AtomicInteger totalCount = new java.util.concurrent.atomic.AtomicInteger(0);
AtomicInteger totalCount = new AtomicInteger(0);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.atomic.AtomicInteger concurrentCount = new java.util.concurrent.atomic.AtomicInteger(0);
AtomicInteger concurrentCount = new AtomicInteger(0);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.neo4j.test.DoubleLatch jobLatch = new org.neo4j.test.DoubleLatch();
DoubleLatch jobLatch = new DoubleLatch();
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.neo4j.test.DoubleLatch testLatch = new org.neo4j.test.DoubleLatch();
DoubleLatch testLatch = new DoubleLatch();
IndexSamplingJobFactory jobFactory = (_indexId, proxy) =>
{
if (!concurrentCount.compareAndSet(0, 1))
{
throw new System.InvalidOperationException("count !== 0 on create");
}
totalCount.incrementAndGet();
jobLatch.WaitForAllToStart();
testLatch.StartAndWaitForAllToStart();
jobLatch.WaitForAllToFinish();
concurrentCount.decrementAndGet();
testLatch.Finish();
return(null);
};
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final IndexSamplingController controller = new IndexSamplingController(samplingConfig, jobFactory, jobQueue, tracker, snapshotProvider, scheduler, always(true));
IndexSamplingController controller = new IndexSamplingController(_samplingConfig, jobFactory, _jobQueue, _tracker, _snapshotProvider, _scheduler, Always(true));
when(_tracker.canExecuteMoreSamplingJobs()).thenReturn(true);
when(_indexProxy.State).thenReturn(ONLINE);
// when running once
(new Thread(RunController(controller, TRIGGER_REBUILD_UPDATED))).Start();
jobLatch.StartAndWaitForAllToStart();
testLatch.WaitForAllToStart();
// then blocking on first job
assertEquals(1, concurrentCount.get());
// when running a second time
controller.SampleIndexes(BACKGROUND_REBUILD_UPDATED);
// then no concurrent job execution
jobLatch.Finish();
testLatch.WaitForAllToFinish();
// and finally exactly one job has run to completion
assertEquals(0, concurrentCount.get());
assertEquals(1, totalCount.get());
}
public virtual bool TryAcquireUpdateLock(ForsetiClient client)
{
while (true)
{
int refs = _refCount.get();
if (refs > 0)
{
if (_refCount.compareAndSet(refs, refs | _updateLockFlag))
{
_updateHolder = client;
return(true);
}
}
else
{
return(false);
}
}
}
public virtual bool Acquire()
{
return(State.compareAndSet(IDLE, IN_USE));
}
private void TellNextThreadToInitialize()
{
bool set = _idQueue.compareAndSet(_id - 1, _id);
Debug.Assert(set, "Something wrong with the design here");
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: long grabFreeAndExclusivelyLockedPage(org.neo4j.io.pagecache.tracing.PageFaultEvent faultEvent) throws java.io.IOException
internal virtual long GrabFreeAndExclusivelyLockedPage(PageFaultEvent faultEvent)
{
// Review the comment on the freelist field before making changes to
// this part of the code.
// Whatever the case, we're going to the head-pointer of the freelist,
// and in doing so, we can discover a number of things.
// We can discover a MuninnPage object, in which case we can try to
// CAS the freelist pointer to the value of the MuninnPage.nextFree
// pointer, and if this succeeds then we've grabbed that page.
// We can discover a FreePage object, in which case we'll do a similar
// dance by attempting to CAS the freelist to the FreePage objects next
// pointer, and again, if we succeed then we've grabbed the MuninnPage
// given by the FreePage object.
// We can discover a null-pointer, in which case the freelist has just
// been emptied for whatever it contained before. New FreePage objects
// are eventually going to be added to the freelist, but we are not
// going to wait around for that to happen. If the freelist is empty,
// then we do our own eviction to get a free page.
// If we find a FreePage object on the freelist, then it is important
// to check and see if it is the shutdownSignal instance. If that's the
// case, then the page cache has been shut down, and we should throw an
// exception from our page fault routine.
object current;
for ( ;;)
{
AssertHealthy();
current = FreelistHead;
if (current == null)
{
UnparkEvictor();
long pageRef = CooperativelyEvict(faultEvent);
if (pageRef != 0)
{
return(pageRef);
}
}
else if (current is AtomicInteger)
{
int pageCount = Pages.PageCount;
AtomicInteger counter = ( AtomicInteger )current;
int pageId = counter.get();
if (pageId < pageCount && counter.compareAndSet(pageId, pageId + 1))
{
return(Pages.deref(pageId));
}
if (pageId >= pageCount)
{
CompareAndSetFreelistHead(current, null);
}
}
else if (current is FreePage)
{
FreePage freePage = ( FreePage )current;
if (freePage == _shutdownSignal)
{
throw new System.InvalidOperationException("The PageCache has been shut down.");
}
if (CompareAndSetFreelistHead(freePage, freePage.NextConflict))
{
return(freePage.PageRef);
}
}
}
}
