public void BasicUsageTest()
{
Tuple<IList<int>, IList<int>> result = null;
var evt = new ManualResetEventSlim (false);
var actionBlock = new ActionBlock<Tuple<IList<int>, IList<int>>> (r =>
{
result = r;
evt.Set ();
});
var block = new BatchedJoinBlock<int, int> (2);
block.LinkTo (actionBlock);
// both targets once
Assert.IsTrue (block.Target1.Post (1));
Assert.IsFalse(evt.Wait(100));
Assert.IsNull (result);
Assert.IsTrue (block.Target2.Post (2));
Assert.IsTrue (evt.Wait (100));
Assert.IsNotNull (result);
CollectionAssert.AreEqual (new[] { 1 }, result.Item1);
CollectionAssert.AreEqual (new[] { 2 }, result.Item2);
result = null;
evt.Reset ();
// target 1 twice
Assert.IsTrue (block.Target1.Post (3));
Assert.IsFalse(evt.Wait(100));
Assert.IsNull (result);
Assert.IsTrue (block.Target1.Post (4));
Assert.IsTrue (evt.Wait (100));
Assert.IsNotNull (result);
CollectionAssert.AreEqual (new[] { 3, 4 }, result.Item1);
CollectionAssert.IsEmpty (result.Item2);
result = null;
evt.Reset ();
// target 2 twice
Assert.IsTrue (block.Target2.Post (5));
Assert.IsFalse(evt.Wait(100));
Assert.IsNull (result);
Assert.IsTrue (block.Target2.Post (6));
Assert.IsTrue (evt.Wait (100));
Assert.IsNotNull (result);
CollectionAssert.IsEmpty (result.Item1);
CollectionAssert.AreEqual (new[] { 5, 6 }, result.Item2);
}
/// <summary>
/// Joins an IRC channel. Only one channel is supported at a time.
/// </summary>
/// <param name="channel"></param>
public void Join(string channel)
{
// Leave current channel
lock (_lockobject)
{
if (!String.IsNullOrEmpty(_currentChannel) && _state == ConnectionState.ChannelJoined)
{
WriteToServerStream($"PART {_currentChannel}");
_state = ConnectionState.Connected;
}
}
_LookingforServerResponseEvent.Reset();
if (!channel.StartsWith("#"))
{
channel = "#" + channel;
}
WriteToServerStream($"JOIN {channel}");
_LookingforServerResponse = true;
_LookingforServerResponseCode = 366;
_LookingforServerResponseEvent.Wait();
// Successfully joined
_currentChannel = channel;
lock (_lockobject)
{
_state = ConnectionState.ChannelJoined;
}
}
// Validates init, set, reset state transitions.
private static void RunManualResetEventSlimTest0_StateTrans(bool init)
{
ManualResetEventSlim ev = new ManualResetEventSlim(init);
if (ev.IsSet != init)
{
Debug.WriteLine("* RunManualResetEventSlimTest0_StateTrans(init={0})", init);
Assert.True(false, string.Format(" > FAILED. expected IsSet=={0}, but it's {1}", init, ev.IsSet));
}
for (int i = 0; i < 50; i++)
{
ev.Set();
if (!ev.IsSet)
{
Debug.WriteLine("* RunManualResetEventSlimTest0_StateTrans(init={0})", init);
Assert.True(false, string.Format(" > FAILED. expected IsSet, but it's false"));
}
ev.Reset();
if (ev.IsSet)
{
Debug.WriteLine("* RunManualResetEventSlimTest0_StateTrans(init={0})", init);
Assert.True(false, string.Format(" > FAILED. expected !IsSet, but it's true"));
}
}
}
public void MemberRemovedEvent()
{
var reset = new ManualResetEventSlim();
_client.GetCluster().AddMembershipListener(new MembershipListener
{
OnMemberAdded = memberAddedEvent => { reset.Set(); }
});
var member = StartMember(_remoteController, _cluster);
Assert.IsTrue(reset.Wait(30 * 1000));
reset.Reset();
MembershipEvent memberRemovedEvent = null;
_client.GetCluster().AddMembershipListener(new MembershipListener
{
OnMemberRemoved = memberRemoved =>
{
memberRemovedEvent = memberRemoved;
reset.Set();
}
});
StopMember(_remoteController, _cluster, member);
Assert.IsTrue(reset.Wait(30*1000));
Assert.IsInstanceOf<ICluster>(memberRemovedEvent.Source);
Assert.IsInstanceOf<ICluster>(memberRemovedEvent.GetCluster());
Assert.AreEqual(MembershipEvent.MemberRemoved, memberRemovedEvent.GetEventType());
Assert.IsNotNull(memberRemovedEvent.GetMember());
Assert.AreEqual(1, memberRemovedEvent.GetMembers().Count);
}
public void TestTimerStartAutoReset()
{
using (var timer = new TestTimer(1))
{
var mres = new ManualResetEventSlim();
int count = 0;
int target = 1;
timer.AutoReset = false;
timer.Elapsed += (sender, e) =>
{
if (Interlocked.Increment(ref count) == target)
{
mres.Set();
}
};
timer.Start();
mres.Wait();
Assert.False(timer.Enabled, "Auto-reset timer should not be enabled after elapsed");
Assert.Equal(1, count);
count = 0;
target = 10;
mres.Reset();
timer.AutoReset = true;
mres.Wait();
timer.Stop();
Assert.InRange(count, target, int.MaxValue);
}
}
public void SuccessiveTimeoutTest(HostType hostType, TransportType transportType, MessageBusType messageBusType)
{
using (var host = CreateHost(hostType, transportType))
{
// Arrange
var mre = new ManualResetEventSlim(false);
host.Initialize(keepAlive: 5, messageBusType: messageBusType);
var connection = CreateConnection(host, "/my-reconnect");
using (connection)
{
connection.Reconnected += () =>
{
mre.Set();
};
connection.Start(host.Transport).Wait();
((Client.IConnection)connection).KeepAliveData = new KeepAliveData(TimeSpan.FromMilliseconds(500));
// Assert that Reconnected is called
Assert.True(mre.Wait(TimeSpan.FromSeconds(15)));
// Assert that Reconnected is called again
mre.Reset();
Assert.True(mre.Wait(TimeSpan.FromSeconds(15)));
// Clean-up
mre.Dispose();
}
}
}
static void PrintFooBar(int p)
{
System.Threading.ManualResetEventSlim mres = new System.Threading.ManualResetEventSlim(false); // initialize as unsignaled
System.Threading.ManualResetEventSlim mres2 = new System.Threading.ManualResetEventSlim(true); // initialize as unsignaled
Thread t1 = new Thread(() =>
{
for (int i = 0; i < 20; i++)
{
mres2.Wait();
Console.WriteLine("foo");
mres2.Reset();
mres.Set();
}
}
);
t1.Start();
Thread t2 = new Thread(() =>
{
for (int i = 0; i < 20; i++)
{
mres.Wait();//true
Console.WriteLine("bar");
mres.Reset();
mres2.Set();
}
});
t2.Start();
}
// Demonstrates:
// ManualResetEventSlim construction
// ManualResetEventSlim.Wait()
// ManualResetEventSlim.Set()
// ManualResetEventSlim.Reset()
// ManualResetEventSlim.IsSet
static void MRES_SetWaitReset()
{
System.Threading.ManualResetEventSlim mres1 = new System.Threading.ManualResetEventSlim(false); // initialize as unsignaled
System.Threading.ManualResetEventSlim mres2 = new System.Threading.ManualResetEventSlim(false); // initialize as unsignaled
System.Threading.ManualResetEventSlim mres3 = new System.Threading.ManualResetEventSlim(true); // initialize as signaled
// Start an asynchronous Task that manipulates mres3 and mres2
var observer = Task.Factory.StartNew(() =>
{
mres1.Wait();
Console.WriteLine("observer sees signaled mres1!");
Console.WriteLine("observer resetting mres3...");
mres3.Reset(); // should switch to unsignaled
Console.WriteLine("observer signalling mres2");
mres2.Set();
});
Console.WriteLine("main thread: mres3.IsSet = {0} (should be true)", mres3.IsSet);
Console.WriteLine("main thread signalling mres1");
mres1.Set(); // This will "kick off" the observer Task
mres2.Wait(); // This won't return until observer Task has finished resetting mres3
Console.WriteLine("main thread sees signaled mres2!");
Console.WriteLine("main thread: mres3.IsSet = {0} (should be false)", mres3.IsSet);
// It's good form to Dispose() a ManualResetEventSlim when you're done with it
observer.Wait(); // make sure that this has fully completed
mres1.Dispose();
mres2.Dispose();
mres3.Dispose();
}
private static void FunWithMRE()
{
ManualResetEventSlim mre = new ManualResetEventSlim();
//MRE mre = new MRE();
mre.WaitAsync().ContinueWith(t => CW("Wait 1 complete"));
mre.WaitAsync().ContinueWith(t => CW("Wait 2 complete"));
mre.WaitAsync().ContinueWith(t => CW("Wait 3 complete"));
WaitUntilKey("set");
mre.Set();
mre.WaitAsync().ContinueWith(t => CW("Wait 4 complete"));
mre.WaitAsync().ContinueWith(t => CW("Wait 5 complete"));
mre.WaitAsync().ContinueWith(t => CW("Wait 6 complete"));
//WaitUntilKey("reset");
mre.Reset();
mre.WaitAsync().ContinueWith(t => CW("Wait 7 complete"));
mre.WaitAsync().ContinueWith(t => CW("Wait 8 complete"));
mre.WaitAsync().ContinueWith(t => CW("Wait 9 complete"));
WaitUntilKey("set again");
mre.Set();
}
public void CheckForStructureChangesStartsFullReparseIfChangeOverlapsMultipleSpans()
{
// Arrange
using (var parser = new RazorEditorParser(CreateHost(), TestLinePragmaFileName))
{
var original = new StringTextBuffer("Foo @bar Baz");
var changed = new StringTextBuffer("Foo @bap Daz");
var change = new TextChange(7, 3, original, 3, changed);
var parseComplete = new ManualResetEventSlim();
var parseCount = 0;
parser.DocumentParseComplete += (sender, args) =>
{
Interlocked.Increment(ref parseCount);
parseComplete.Set();
};
Assert.Equal(PartialParseResult.Rejected, parser.CheckForStructureChanges(new TextChange(0, 0, new StringTextBuffer(string.Empty), 12, original)));
MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait); // Wait for the parse to finish
parseComplete.Reset();
// Act
var result = parser.CheckForStructureChanges(change);
// Assert
Assert.Equal(PartialParseResult.Rejected, result);
MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait);
Assert.Equal(2, parseCount);
}
}
static void Main(string[] args)
{
// create the primtive
ManualResetEventSlim manualResetEvent
= new ManualResetEventSlim();
// create the cancellation token source
CancellationTokenSource tokenSource
= new CancellationTokenSource();
// create and start the task that will wait on the event
Task waitingTask = Task.Factory.StartNew(() => {
while (true) {
// wait on the primitive
manualResetEvent.Wait(tokenSource.Token);
// print out a message
Console.WriteLine("Waiting task active");
}
}, tokenSource.Token);
// create and start the signalling task
Task signallingTask = Task.Factory.StartNew(() => {
// create a random generator for sleep periods
Random rnd = new Random();
// loop while the task has not been cancelled
while (!tokenSource.Token.IsCancellationRequested) {
// go to sleep for a random period
tokenSource.Token.WaitHandle.WaitOne(rnd.Next(500, 2000));
// set the event
manualResetEvent.Set();
Console.WriteLine("Event set");
// go to sleep again
tokenSource.Token.WaitHandle.WaitOne(rnd.Next(500, 2000));
// reset the event
manualResetEvent.Reset();
Console.WriteLine("Event reset");
}
// if we reach this point, we know the task has been cancelled
tokenSource.Token.ThrowIfCancellationRequested();
}, tokenSource.Token);
// ask the user to press return before we cancel
// the token and bring the tasks to an end
Console.WriteLine("Press enter to cancel tasks");
Console.ReadLine();
// cancel the token source and wait for the tasks
tokenSource.Cancel();
try {
Task.WaitAll(waitingTask, signallingTask);
} catch (AggregateException) {
// discard exceptions
}
// wait for input before exiting
Console.WriteLine("Press enter to finish");
Console.ReadLine();
}
public override void Run(VoidAction tickCallback)
{
// 59.75 is sort of compensation
long ticksPerFrame = (int)Math.Round(MyGameTimer.Frequency / 59.75f);
long targetTicks = 0;
MyLog.Default.WriteLine("Timer Frequency: " + MyGameTimer.Frequency);
MyLog.Default.WriteLine("Ticks per frame: " + ticksPerFrame);
ManualResetEventSlim waiter = new ManualResetEventSlim(false, 0);
MyTimer.TimerEventHandler handler = new MyTimer.TimerEventHandler((a, b, c, d, e) =>
{
waiter.Set();
});
base.Run(delegate
{
using (Stats.Generic.Measure("WaitForUpdate"))
{
var currentTicks = m_gameTimer.ElapsedTicks;
// Wait for correct frame start
targetTicks += ticksPerFrame;
if (currentTicks > targetTicks + ticksPerFrame * 5)
{
// We're more behind than 5 frames, don't try to catch up
targetTicks = currentTicks;
}
else
{
// For until correct tick comes
if (MyFakes.ENABLE_UPDATE_WAIT)
{
var remaining = MyTimeSpan.FromTicks(targetTicks - currentTicks);
int waitMs = (int)(remaining.Miliseconds - 0.1); // To handle up to 0.1ms inaccuracy of timer
if (waitMs > 0)
{
waiter.Reset();
MyTimer.StartOneShot(waitMs, handler);
waiter.Wait(17); // Never wait more than 17ms
//Debug.Assert(MyPerformanceCounter.ElapsedTicks < targetTicks);
//VRageRender.MyRenderStats.Write("WaitRemaining", (float)MyPerformanceCounter.TicksToMs(targetTicks - MyPerformanceCounter.ElapsedTicks), VRageRender.MyStatTypeEnum.MinMaxAvg, 300, 3);
}
}
while (m_gameTimer.ElapsedTicks < targetTicks) ;
}
}
//UpdateInternal();
tickCallback();
ProfilerShort.Commit();
});
}
public void Execute()
{
//
// 通常の使い方.
//
var mres = new ManualResetEventSlim(false);
ThreadPool.QueueUserWorkItem(DoProc, mres);
Output.Write("メインスレッド待機中・・・");
mres.Wait();
Output.WriteLine("終了");
//
// WaitメソッドにCancellationTokenを受け付けるオーバーロードを使用。
//
mres.Reset();
var tokenSource = new CancellationTokenSource();
var token = tokenSource.Token;
Task.Factory.StartNew(DoProc, mres);
//
// キャンセル状態に設定.
//
tokenSource.Cancel();
Output.Write("メインスレッド待機中・・・");
try
{
//
// CancellationTokenを指定して、Wait呼び出し。
// この場合は、以下のどちらかの条件を満たした時点でWaitが解除される。
// ・別の場所にて、Setが呼ばれてシグナル状態となる。
// ・CancellationTokenがキャンセルされる。
//
// トークンがキャンセルされた場合、OperationCanceledExceptionが発生するので
// CancellationTokenを指定するWaitを呼び出す場合は、try-catchが必須となる。
//
// 今回の例の場合は、予めCancellationTokenをキャンセルしているので
// タスク処理でシグナル状態に設定されるよりも先に、キャンセル状態に設定される。
// なので、実行結果には、「*** シグナル状態に設定 ***」という文言は出力されない。
//
mres.Wait(token);
}
catch (OperationCanceledException cancelEx)
{
Output.Write("*** {0} *** ", cancelEx.Message);
}
Output.WriteLine("終了");
}
public void Start()
{
try
{
slim.Wait();
slim.Reset();
}
finally
{
slim.Set();
}
}
public void MemcacheClientReplicasTest()
{
var callbackMutex = new ManualResetEventSlim(false);
var client = new MemcacheClient(_configuration);
// The number of requests sent is capped by the number of nodes in the cluster.
// The last iteration of the loop below actually tests the case where the total
// number of copies (Replicas+1) is strictly greater than the number of nodes.
int nodeCount = _configuration.NodesEndPoints.Count;
for (int replicas = 0; replicas <= nodeCount; replicas++)
{
_configuration.Replicas = replicas;
// SET
callbackMutex.Reset();
NodeMock.TrySendCounter = 0;
Assert.IsTrue(client.Set("toto", new byte[0], TimeSpan.MaxValue, s => callbackMutex.Set()));
Assert.AreEqual(Math.Min(replicas + 1, nodeCount), NodeMock.TrySendCounter);
Assert.IsTrue(callbackMutex.Wait(1000),
string.Format("The SET callback has not been received after 1 second (Replicas = {0})", replicas));
// GET
callbackMutex.Reset();
NodeMock.TrySendCounter = 0;
Assert.IsTrue(client.Get("toto", (Status s, byte[] data) => callbackMutex.Set()));
Assert.AreEqual(Math.Min(replicas + 1, nodeCount), NodeMock.TrySendCounter);
Assert.IsTrue(callbackMutex.Wait(1000),
string.Format("The GET callback has not been received after 1 second (Replicas = {0})", replicas));
// DELETE
callbackMutex.Reset();
NodeMock.TrySendCounter = 0;
Assert.IsTrue(client.Delete("toto", s => callbackMutex.Set()));
Assert.AreEqual(Math.Min(replicas + 1, nodeCount), NodeMock.TrySendCounter);
Assert.IsTrue(callbackMutex.Wait(1000),
string.Format("The DELETE callback has not been received after 1 second (Replicas = {0})", replicas));
}
}
public void LatestOfSource()
{
var source = AsyncEnumerable.Source<int>();
var latest = source.Latest();
var step = new ManualResetEventSlim(false);
var proceed = new ManualResetEventSlim(false);
Assert.IsTrue(latest.Item.IsNone, $"(0) {latest.Item}");
var t = Task.Run(async () =>
{
await source.Yield(1);
await Task.Yield();
step.Set();
proceed.Wait(); proceed.Reset();
await source.Yield(2);
await Task.Yield();
step.Set();
proceed.Wait(); proceed.Reset();
await source.Break();
await Task.Yield();
step.Set();
proceed.Wait(); proceed.Reset();
});
step.Wait(); step.Reset();
Assert.IsTrue(latest.Item.Value == 1, $"(1) {latest.Item}");
proceed.Set();
step.Wait(); step.Reset();
Assert.IsTrue(latest.Item.Value == 2, $"(2) {latest.Item}");
proceed.Set();
step.Wait(); step.Reset();
Assert.IsTrue(latest.Item.IsCompleted, $"(3) {latest.Item}");
proceed.Set();
}
public ShipsViewModel()
{
WaitShipsEvent = new ManualResetEventSlim(false);
KanColleGame.Current.ObservablePropertyChanged.Where(r => r == nameof(KanColleGame.Current.Ships)).Subscribe(_ =>
{
Count = KanColleGame.Current.Ships.Count + KanColleGame.Current.DroppedShip;
WaitShipsEvent.Reset();
Ships = KanColleGame.Current.Ships.Values.Select(r => new ShipViewModel(r)).ToArray();
WaitShipsEvent.Set();
});
}
public void NextOfSource()
{
var source = AsyncEnumerable.Source<int>();
var next = source.Next();
var step = new ManualResetEventSlim(false);
var proceed = new ManualResetEventSlim(false);
var t = Task.Run(async () =>
{
await source.Yield(1);
await Task.Yield();
step.Set();
proceed.Wait(); proceed.Reset();
await source.Yield(2);
await Task.Yield();
step.Set();
proceed.Wait(); proceed.Reset();
await source.Break();
await Task.Yield();
step.Set();
proceed.Wait(); proceed.Reset();
});
step.Wait(); step.Reset();
Assert.IsTrue(next.Result == 1, $"(1) {next.Result}");
next = source.Next();
proceed.Set();
step.Wait(); step.Reset();
Assert.IsTrue(next.Result == 2, $"(2) {next.Result}");
next = source.Next();
proceed.Set();
step.Wait(); step.Reset();
}
public void Set_Reset_Cycles()
{
using (var resetEvent = new ManualResetEventSlim(false))
{
var stopwatch = Stopwatch.StartNew();
for (var i = 0; i < Iterations; i++)
{
resetEvent.Set();
resetEvent.Reset();
}
stopwatch.StopAndLog(Iterations);
}
}
public HarvesterProcessingDispatcher(ILogger logger, Func<IFileBatchManager> fileBatchManagerFactory, string harvesterName)
{
_logger = logger;
_harvesterName = harvesterName;
_fileBatchManagerFactory = fileBatchManagerFactory;
_operationQueue = new Queue<BasicSerializedDeliveryEventArgs<FileMessage>>();
_shutdownEvent = new ManualResetEventSlim(false);
_shutdownEvent.Reset();
_dispatcher = new Task(this.Processing, TaskCreationOptions.LongRunning);
_dispatcher.Start();
_syncObject = new object();
}
public override void Run(VoidAction tickCallback)
{
long targetTicks = 0;
ManualResetEventSlim waiter = new ManualResetEventSlim(false, 0);
MyTimer.TimerEventHandler handler = new MyTimer.TimerEventHandler((a, b, c, d, e) =>
{
waiter.Set();
});
base.Run(delegate
{
using (StatGroup.Measure(StatName))
{
var currentTicks = m_gameTimer.ElapsedTicks;
// Wait for correct frame start
targetTicks += TickPerFrame;
if (currentTicks > targetTicks + TickPerFrame * 5)
{
// We're more behind than 5 frames, don't try to catch up
targetTicks = currentTicks;
}
else
{
// For until correct tick comes
if (EnableUpdateWait)
{
var remaining = MyTimeSpan.FromTicks(targetTicks - currentTicks);
int waitMs = (int)(remaining.Miliseconds - 0.1); // To handle up to 0.1ms inaccuracy of timer
if (waitMs > 0)
{
waiter.Reset();
MyTimer.StartOneShot(waitMs, handler);
waiter.Wait(17); // Never wait more than 17ms
//Debug.Assert(MyPerformanceCounter.ElapsedTicks < targetTicks);
//VRageRender.MyRenderStats.Write("WaitRemaining", (float)MyPerformanceCounter.TicksToMs(targetTicks - MyPerformanceCounter.ElapsedTicks), VRageRender.MyStatTypeEnum.MinMaxAvg, 300, 3);
}
}
while (m_gameTimer.ElapsedTicks < targetTicks) ;
}
}
//UpdateInternal();
tickCallback();
});
}
public bool WaitForWorkItems(double timeout)
{
if (_Disposed)
{
return(false);
}
if (_Queue.Count > 0)
{
return(true);
}
else
{
Interlocked.Increment(ref _WaiterCount);
if (timeout <= 0)
{
timeout = DefaultWaitTimeout;
}
int timeoutMs = (int)Math.Ceiling(TimeSpan.FromSeconds(timeout).TotalMilliseconds);
try {
if (_Queue.Count > 0)
{
return(true);
}
else
{
var result = _WaiterSignal.Wait(timeoutMs);
if (_Disposed)
{
return(false);
}
else
{
_WaiterSignal.Reset();
return(result);
}
}
} finally {
Interlocked.Decrement(ref _WaiterCount);
}
}
}
public CommandResult Execute()
{
_fileSystemMigrator.Migrate();
_console.WriteLine("scriptcs (ctrl-c to exit)");
_logger.InfoFormat("Running script '{0}' and watching for changes...", _config.ScriptName);
while (true)
{
using (var fileChanged = new ManualResetEventSlim())
using (var watcher = new FileWatcher(_config.ScriptName, 500, _fileSystem))
{
_logger.DebugFormat("Creating app domain '{0}'...", _config.ScriptName);
var appDomain = AppDomain.CreateDomain(_config.ScriptName, null, _setup);
try
{
watcher.Changed += (sender, e) =>
{
_logger.DebugFormat("Script '{0}' changed.", _config.ScriptName);
EnsureUnloaded(appDomain);
fileChanged.Set();
};
watcher.Start();
_logger.DebugFormat("Executing script '{0}' and watching for changes...", _config.ScriptName);
fileChanged.Reset();
try
{
appDomain.DoCallBack(_executeScriptCommand.Execute);
}
catch (AppDomainUnloadedException ex)
{
_logger.DebugFormat("App domain '{0}' has been unloaded.", ex, _config.ScriptName);
}
}
finally
{
EnsureUnloaded(appDomain);
}
fileChanged.Wait();
_logger.InfoFormat("Script changed. Reloading...", _config.ScriptName);
}
}
}
private static void ExecutorTaskAction(Action action,
int interval,
int delay,
int runTime,
int maxRuns,
Stopwatch sw,
CancellationToken cancelToken = new CancellationToken(),
TaskCreationOptions taskOptions = TaskCreationOptions.None)
{
TaskCreationOptions taskCreationOptions = TaskCreationOptions.AttachedToParent | taskOptions;
StopIfCancelled(cancelToken);
if (delay > 0)
{
Thread.Sleep(delay);
}
if (maxRuns == 0) return;
long iteration = 0;
using (ManualResetEventSlim resetEvent = new ManualResetEventSlim(false))
{
while (true)
{
StopIfCancelled(cancelToken);
Task subTask = Task.Factory.StartNew(action, cancelToken, taskCreationOptions, TaskScheduler.Current);
if (interval == Timeout.Infinite) { break; }
if (maxRuns > 0 && ++iteration >= maxRuns) { break; }
try
{
sw.Start();
resetEvent.Wait(interval, cancelToken);
sw.Stop();
}
finally
{
resetEvent.Reset();
}
StopIfCancelled(cancelToken);
if (runTime > 0 && sw.ElapsedMilliseconds >= runTime) { break; }
}
}
}
public void TestBrowser()
{
#if __ANDROID__
if(global::Android.OS.Build.VERSION.SdkInt < global::Android.OS.BuildVersionCodes.JellyBean) {
Assert.Inconclusive("PeerToPeer requires API level 16, but found {0}", global::Android.OS.Build.VERSION.Sdk);
}
#endif
//Use a short timeout to speed up the test since it is performed locally
//Android will get stuck in DNSProcessResult which hangs indefinitely if
//no results are found (Which will happen if registration is aborted between
//the resolve reply and query record steps)
ServiceParams.Timeout = TimeSpan.FromSeconds(3);
var mre = new ManualResetEventSlim();
CouchbaseLiteServiceBrowser browser = new CouchbaseLiteServiceBrowser(new ServiceBrowser());
browser.ServiceResolved += (sender, e) => {
Log.D(TAG, "Discovered service: {0}", e.Service.Name);
if(e.Service.Name == TAG) {
mre.Set();
}
};
browser.ServiceRemoved += (o, args) => {
Log.D(TAG, "Service destroyed: {0}", args.Service.Name);
if(args.Service.Name == TAG) {
mre.Set();
}
};
browser.Start();
CouchbaseLiteServiceBroadcaster broadcaster = new CouchbaseLiteServiceBroadcaster(new RegisterService(), 59840);
broadcaster.Name = TAG;
broadcaster.Start();
Assert.IsTrue(mre.Wait(TimeSpan.FromSeconds(10)));
//FIXME.JHB: Why does Linux hate this part sporadically?
mre.Reset();
broadcaster.Dispose();
var success = mre.Wait(TimeSpan.FromSeconds(10));
browser.Dispose();
Assert.IsTrue(success);
}
private static void ClientConnect()
{
using (var client = new AsyncSocketConnector())
using (var ready = new System.Threading.ManualResetEventSlim(false))
{
client.FilterChain.AddLast("ssl", new SslFilter("TempCert", null));
client.FilterChain.AddLast("text", new ProtocolCodecFilter(new TextLineCodecFactory()));
client.MessageReceived += (s, e) =>
{
Debug.WriteLine("Client got: " + e.Message);
ready.Set();
};
var session = client.Connect(new IPEndPoint(IPAddress.Loopback, port)).Await().Session;
Debug.WriteLine("Client sending: hello");
session.Write("hello ");
Debug.WriteLine("Client sending: send");
session.Write("send");
ready.Wait(3000);
Assert.IsTrue(ready.IsSet);
ready.Reset();
Assert.IsFalse(ready.IsSet);
Debug.WriteLine("Client sending: hello");
session.Write(IoBuffer.Wrap(Encoding.UTF8.GetBytes("hello \n")));
Debug.WriteLine("Client sending: send");
session.Write(IoBuffer.Wrap(Encoding.UTF8.GetBytes("send\n")));
ready.Wait(3000);
Assert.IsTrue(ready.IsSet);
session.Close(true);
}
}
static async Task Main(string[] args)
{
var cts = new CancellationTokenSource();
// Pass the same token source to the delegate and to the task instance.
Task.Run(() => DoWork(cts.Token), cts.Token);
Console.WriteLine("Press c to cancel, p to pause, or s to start/restart,");
Console.WriteLine("or any other key to exit.");
// New-style UI thread.
bool goAgain = true;
while (goAgain)
{
char ch = Console.ReadKey(true).KeyChar;
switch (ch)
{
case 'c':
// Token can only be canceled once.
cts.Cancel();
break;
case 'p':
mres.Reset();
break;
case 's':
mres.Set();
break;
default:
goAgain = false;
break;
}
Thread.Sleep(100);
}
cts.Dispose();
}
public void CanUpdateToBeNoItemsInChildTable(string requestedStorage)
{
CreateRdbmsSchema();
using (var store = NewDocumentStore(requestedStorage: requestedStorage))
{
var eventSlim = new ManualResetEventSlim(false);
store.SystemDatabase.StartupTasks.OfType<SqlReplicationTask>()
.First().AfterReplicationCompleted += successCount =>
{
if (successCount != 0)
eventSlim.Set();
};
using (var session = store.OpenSession())
{
session.Store(new Order
{
OrderLines = new List<OrderLine>
{
new OrderLine{Cost = 3, Product = "Milk", Quantity = 3},
new OrderLine{Cost = 4, Product = "Bear", Quantity = 2},
}
});
session.SaveChanges();
}
SetupSqlReplication(store, defaultScript);
eventSlim.Wait(TimeSpan.FromMinutes(5));
AssertCounts(1, 2);
eventSlim.Reset();
using (var session = store.OpenSession())
{
session.Load<Order>(1).OrderLines.Clear();
session.SaveChanges();
}
eventSlim.Wait(TimeSpan.FromMinutes(5));
AssertCounts(1, 0);
}
}
//
// Taking the Upgradable read lock is like taking a read lock
// but we limit it to a single upgradable at a time.
//
public bool TryEnterUpgradeableReadLock(int millisecondsTimeout)
{
var currentThreadState = CurrentThreadState;
if (CheckState(currentThreadState, millisecondsTimeout, LockState.Upgradable))
{
++currentThreadState.UpgradeableRecursiveCount;
return(true);
}
if ((currentThreadState.LockState & LockState.Read) > 0)
{
throw new LockRecursionException("The current thread has already entered read mode");
}
++WaitingUpgradeCount;
var start = millisecondsTimeout == -1 ? 0 : _stopwatch.ElapsedMilliseconds;
var taken = false;
var success = false;
// We first try to obtain the upgradeable right
try
{
while (!_upgradableEvent.IsSet || !taken)
{
try
{
}
finally
{
taken = _upgradableTaken.TryRelaxedSet();
}
if (taken)
{
break;
}
if (millisecondsTimeout != -1 && _stopwatch.ElapsedMilliseconds - start > millisecondsTimeout)
{
--WaitingUpgradeCount;
return(false);
}
_upgradableEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
}
_upgradableEvent.Reset();
RuntimeHelpers.PrepareConstrainedRegions();
try
{
// Then it's a simple reader lock acquiring
TryEnterReadLock(ComputeTimeout(millisecondsTimeout, start), ref success);
}
finally
{
if (success)
{
currentThreadState.LockState |= LockState.Upgradable;
currentThreadState.LockState &= ~LockState.Read;
--currentThreadState.ReaderRecursiveCount;
++currentThreadState.UpgradeableRecursiveCount;
}
else
{
_upgradableTaken.Value = false;
_upgradableEvent.Set();
}
}
--WaitingUpgradeCount;
}
catch (Exception ex)
{
No.Op(ex);
// An async exception occured, if we had taken the upgradable mode, release it
_upgradableTaken.Value &= !taken || success;
}
return(success);
}
public void TestBatcherCancel()
{
var mre = new ManualResetEventSlim();
var scheduler = new SingleTaskThreadpoolScheduler();
var batcher = new Batcher<int>(new TaskFactory(scheduler), 5, 500, (inbox) =>
{
mre.Set();
});
batcher.QueueObject(0);
Assert.IsTrue(mre.Wait(1000), "Batcher didn't initially run");
mre.Reset();
batcher.QueueObject(0);
batcher.Clear();
Assert.False(mre.Wait(TimeSpan.FromSeconds(1)), "Batcher ran after being cancelled");
}
internal void SleepWorkerThreadFunc(PriorityQueue <SleepItem> pendingSleeps, System.Threading.ManualResetEventSlim newSleepEvent)
{
while (true)
{
long now = TimeProvider.Ticks;
SleepItem currentSleep;
Monitor.Enter(pendingSleeps);
if (pendingSleeps.Peek(out currentSleep))
{
if (currentSleep.Tick(now))
{
pendingSleeps.Dequeue();
Monitor.Exit(pendingSleeps);
continue;
}
else
{
Monitor.Exit(pendingSleeps);
}
}
else
{
Monitor.Exit(pendingSleeps);
if (!newSleepEvent.Wait(SleepThreadTimeoutMs))
{
return;
}
newSleepEvent.Reset();
continue;
}
long sleepUntil = currentSleep.Until;
now = TimeProvider.Ticks;
long timeToSleep = (sleepUntil - now) + SleepFudgeFactor;
if (timeToSleep < SleepSpinThreshold)
{
int iteration = 1;
while (TimeProvider.Ticks < sleepUntil)
{
Thread.SpinWait(20 * iteration);
iteration += 1;
}
timeToSleep = 0;
}
if (timeToSleep > 0)
{
if (timeToSleep > MaximumSleepLength)
{
timeToSleep = MaximumSleepLength;
}
int msToSleep = 0;
if (timeToSleep >= MinimumSleepLength)
{
msToSleep = (int)(timeToSleep / Time.MillisecondInTicks);
}
if (newSleepEvent != null)
{
newSleepEvent.Reset();
newSleepEvent.Wait(msToSleep);
}
}
}
}
public void TestPullerChangedEvent()
{
if (!Boolean.Parse((string)Runtime.Properties["replicationTestsEnabled"]))
{
Assert.Inconclusive("Replication tests disabled.");
return;
}
var docIdTimestamp = Convert.ToString(Runtime.CurrentTimeMillis());
var doc1Id = string.Format("doc1-{0}", docIdTimestamp);
var doc2Id = string.Format("doc2-{0}", docIdTimestamp);
AddDocWithId(doc1Id, "attachment.png");
AddDocWithId(doc2Id, "attachment2.png");
var pull = database.CreatePullReplication(GetReplicationURL());
List<ReplicationStatus> statusHistory = new List<ReplicationStatus>();
pull.Changed += (sender, e) =>
{
statusHistory.Add(e.Source.Status);
if(e.Source.ChangesCount > 0 && e.Source.CompletedChangesCount != e.Source.ChangesCount) {
Assert.AreEqual(ReplicationStatus.Active, e.Source.Status);
}
if(e.Source.Status == ReplicationStatus.Stopped) {
Assert.AreNotEqual(0, e.Source.CompletedChangesCount);
Assert.AreEqual(e.Source.ChangesCount, e.Source.CompletedChangesCount);
}
};
RunReplication(pull);
foreach (var status in statusHistory.Take(statusHistory.Count - 1)) {
Assert.AreEqual(ReplicationStatus.Active, status);
}
Assert.AreEqual(ReplicationStatus.Stopped, statusHistory[statusHistory.Count - 1]);
doc1Id = string.Format("doc3-{0}", docIdTimestamp);
doc2Id = string.Format("doc4-{0}", docIdTimestamp);
AddDocWithId(doc1Id, "attachment.png");
AddDocWithId(doc2Id, "attachment2.png");
pull = database.CreatePullReplication(GetReplicationURL());
pull.Continuous = true;
statusHistory.Clear();
var doneEvent = new ManualResetEventSlim();
pull.Changed += (sender, e) =>
{
statusHistory.Add(e.Source.Status);
if(e.Source.ChangesCount > 0 && e.Source.CompletedChangesCount != e.Source.ChangesCount) {
Assert.AreEqual(ReplicationStatus.Active, e.Source.Status);
}
if(e.Source.Status == ReplicationStatus.Idle) {
Assert.AreNotEqual(0, e.Source.CompletedChangesCount);
Assert.AreEqual(e.Source.ChangesCount, e.Source.CompletedChangesCount);
doneEvent.Set();
} else if(e.Source.Status == ReplicationStatus.Stopped) {
doneEvent.Set();
}
};
pull.Start();
Assert.IsTrue(doneEvent.Wait(TimeSpan.FromSeconds(60)));
Assert.IsNull(pull.LastError);
foreach (var status in statusHistory.Take(statusHistory.Count - 1)) {
Assert.AreEqual(ReplicationStatus.Active, status);
}
Assert.AreEqual(ReplicationStatus.Idle, statusHistory[statusHistory.Count - 1]);
doneEvent.Reset();
statusHistory.Clear();
doc1Id = string.Format("doc5-{0}", docIdTimestamp);
AddDocWithId(doc1Id, "attachment.png");
Assert.IsTrue(doneEvent.Wait(TimeSpan.FromSeconds(60)));
Assert.IsNull(pull.LastError);
foreach (var status in statusHistory.Take(statusHistory.Count - 1)) {
Assert.AreEqual(ReplicationStatus.Active, status);
}
Assert.AreEqual(ReplicationStatus.Idle, statusHistory[statusHistory.Count - 1]);
doneEvent.Reset();
statusHistory.Clear();
pull.Stop();
Assert.IsTrue(doneEvent.Wait(TimeSpan.FromSeconds(60)));
Assert.IsNull(pull.LastError);
Assert.AreEqual(2, statusHistory.Count);
Assert.AreEqual(ReplicationStatus.Active, statusHistory.First());
Assert.AreEqual(ReplicationStatus.Stopped, statusHistory[1]);
}
/// <summary>
/// Notifies the <see cref="Barrier"/> that there will be additional participants.
/// </summary>
/// <param name="participantCount">The number of additional participants to add to the
/// barrier.</param>
/// <returns>The phase number of the barrier in which the new participants will first
/// participate.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="participantCount"/> is less than
/// 0.</exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">Adding <paramref name="participantCount"/> participants would cause the
/// barrier's participant count to exceed <see cref="T:System.Int16.MaxValue"/>.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action.
/// </exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public long AddParticipants(int participantCount)
{
// check dispose
ThrowIfDisposed();
if (participantCount < 1)
{
throw new ArgumentOutOfRangeException(nameof(participantCount), participantCount,
SR.Barrier_AddParticipants_NonPositive_ArgumentOutOfRange);
}
else if (participantCount > MAX_PARTICIPANTS) //overflow
{
throw new ArgumentOutOfRangeException(nameof(participantCount),
SR.Barrier_AddParticipants_Overflow_ArgumentOutOfRange);
}
// in case of this is called from the PHA
if (_actionCallerID != 0 && Environment.CurrentManagedThreadId == _actionCallerID)
{
throw new InvalidOperationException(SR.Barrier_InvalidOperation_CalledFromPHA);
}
SpinWait spinner = new SpinWait();
long newPhase = 0;
while (true)
{
int currentTotal = _currentTotalCount;
int total;
int current;
bool sense;
GetCurrentTotal(currentTotal, out current, out total, out sense);
if (participantCount + total > MAX_PARTICIPANTS) //overflow
{
throw new ArgumentOutOfRangeException(nameof(participantCount),
SR.Barrier_AddParticipants_Overflow_ArgumentOutOfRange);
}
if (SetCurrentTotal(currentTotal, current, total + participantCount, sense))
{
// Calculating the first phase for that participant, if the current phase already finished return the next phase else return the current phase
// To know that the current phase is the sense doesn't match the
// phase odd even, so that means it didn't yet change the phase count, so currentPhase +1 is returned, otherwise currentPhase is returned
long currPhase = CurrentPhaseNumber;
newPhase = (sense != (currPhase % 2 == 0)) ? currPhase + 1 : currPhase;
// If this participant is going to join the next phase, which means the postPhaseAction is being running, this participants must wait until this done
// and its event is reset.
// Without that, if the postPhaseAction takes long time, this means the event that the current participant is going to wait on is still set
// (FinishPhase didn't reset it yet) so it should wait until it reset
if (newPhase != currPhase)
{
// Wait on the opposite event
if (sense)
{
_oddEvent.Wait();
}
else
{
_evenEvent.Wait();
}
}
//This else to fix the racing where the current phase has been finished, m_currentPhase has been updated but the events have not been set/reset yet
// otherwise when this participant calls SignalAndWait it will wait on a set event however all other participants have not arrived yet.
else
{
if (sense && _evenEvent.IsSet)
{
_evenEvent.Reset();
}
else if (!sense && _oddEvent.IsSet)
{
_oddEvent.Reset();
}
}
break;
}
spinner.SpinOnce();
}
return(newPhase);
}
public void SendToRecvFromAsync_Datagram_UDP_UdpClient(IPAddress leftAddress, IPAddress rightAddress)
{
// TODO #5185: harden against packet loss
const int DatagramSize = 256;
const int DatagramsToSend = 256;
const int AckTimeout = 1000;
const int TestTimeout = 30000;
using (var left = new UdpClient(new IPEndPoint(leftAddress, 0)))
using (var right = new UdpClient(new IPEndPoint(rightAddress, 0)))
{
var leftEndpoint = (IPEndPoint)left.Client.LocalEndPoint;
var rightEndpoint = (IPEndPoint)right.Client.LocalEndPoint;
var receiverAck = new ManualResetEventSlim();
var senderAck = new ManualResetEventSlim();
var receivedChecksums = new uint?[DatagramsToSend];
int receivedDatagrams = 0;
Task receiverTask = Task.Run(async () =>
{
for (; receivedDatagrams < DatagramsToSend; receivedDatagrams++)
{
UdpReceiveResult result = await left.ReceiveAsync();
receiverAck.Set();
Assert.True(senderAck.Wait(AckTimeout));
senderAck.Reset();
Assert.Equal(DatagramSize, result.Buffer.Length);
Assert.Equal(rightEndpoint, result.RemoteEndPoint);
int datagramId = (int)result.Buffer[0];
Assert.Null(receivedChecksums[datagramId]);
receivedChecksums[datagramId] = Fletcher32.Checksum(result.Buffer, 0, result.Buffer.Length);
}
});
var sentChecksums = new uint[DatagramsToSend];
int sentDatagrams = 0;
Task senderTask = Task.Run(async () =>
{
var random = new Random();
var sendBuffer = new byte[DatagramSize];
for (; sentDatagrams < DatagramsToSend; sentDatagrams++)
{
random.NextBytes(sendBuffer);
sendBuffer[0] = (byte)sentDatagrams;
int sent = await right.SendAsync(sendBuffer, DatagramSize, leftEndpoint);
Assert.True(receiverAck.Wait(AckTimeout));
receiverAck.Reset();
senderAck.Set();
Assert.Equal(DatagramSize, sent);
sentChecksums[sentDatagrams] = Fletcher32.Checksum(sendBuffer, 0, sent);
}
});
Assert.True(Task.WaitAll(new[] { receiverTask, senderTask }, TestTimeout));
for (int i = 0; i < DatagramsToSend; i++)
{
Assert.NotNull(receivedChecksums[i]);
Assert.Equal(sentChecksums[i], (uint)receivedChecksums[i]);
}
}
}
public void Reset(int value)
{
evt.Reset();
Interlocked.Exchange(ref count, value);
}
public void TestGetReplicator()
{
if (!Boolean.Parse((string)GetProperty("replicationTestsEnabled")))
{
Assert.Inconclusive("Replication tests disabled.");
return;
}
using (var remoteDb = _sg.CreateDatabase(TempDbName())) {
var replicationUrl = remoteDb.RemoteUri;
var replicator = database.CreatePullReplication(replicationUrl);
Assert.IsNotNull(replicator);
Assert.IsTrue(replicator.IsPull);
Assert.IsFalse(replicator.Continuous);
Assert.IsFalse(replicator.IsRunning);
ReplicationStatus lastStatus = replicator.Status;
var mre = new ManualResetEventSlim();
replicator.Changed += (sender, e) =>
{
if (lastStatus != e.Source.Status) {
lastStatus = e.Source.Status;
mre.Set();
}
};
replicator.Start();
Assert.IsTrue(mre.Wait(TimeSpan.FromSeconds(10)), "Timed out waiting for replicator to start");
Assert.IsTrue(replicator.IsRunning);
var activeReplicators = default(IList<Replication>);
var got = database.ActiveReplicators.AcquireTemp(out activeReplicators);
Assert.IsTrue(got);
Assert.AreEqual(1, activeReplicators.Count);
Assert.AreEqual(replicator, activeReplicators[0]);
replicator.Stop();
mre.Reset();
Assert.IsTrue(mre.Wait(TimeSpan.FromSeconds(10)), "Timed out waiting for replicator to stop");
Assert.IsFalse(replicator.IsRunning);
Sleep(500);
got = database.ActiveReplicators.AcquireTemp(out activeReplicators);
Assert.IsTrue(got);
Assert.AreEqual(0, activeReplicators.Count);
}
}
/// <summary>
/// Notifies the <see cref="Barrier"/> that there will be additional participants.
/// </summary>
/// <param name="participantCount">The number of additional participants to add to the
/// barrier.</param>
/// <returns>The phase number of the barrier in which the new participants will first
/// participate.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="participantCount"/> is less than
/// 0.</exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">Adding <paramref name="participantCount"/> participants would cause the
/// barrier's participant count to exceed <see cref="T:System.Int16.MaxValue"/>.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action.
/// </exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public long AddParticipants(int participantCount)
{
// check dispose
ThrowIfDisposed();
if (participantCount < 1)
{
throw new ArgumentOutOfRangeException("participantCount", participantCount,
"The participantCount argument must be a positive value.");
}
if (participantCount > _maxParticipants) //overflow
{
throw new ArgumentOutOfRangeException("participantCount",
"Adding participantCount participants would result in the number of participants exceeding the maximum number allowed.");
}
// in case of this is called from the PHA
if (_actionCallerId != 0 && Thread.CurrentThread.ManagedThreadId == _actionCallerId)
{
throw new InvalidOperationException("This method may not be called from within the postPhaseAction.");
}
var spinner = new SpinWait();
long newPhase;
while (true)
{
var currentTotal = Volatile.Read(ref _currentTotalCount);
int total;
int current;
bool sense;
GetCurrentTotal(currentTotal, out current, out total, out sense);
if (participantCount + total > _maxParticipants) //overflow
{
throw new ArgumentOutOfRangeException("participantCount",
"Adding participantCount participants would result in the number of participants exceeding the maximum number allowed.");
}
if (SetCurrentTotal(currentTotal, current, total + participantCount, sense))
{
// Calculating the first phase for that participant, if the current phase already finished return the next phase else return the current phase
// To know that the current phase is the sense doesn't match the
// phase odd even, so that means it didn't yet change the phase count, so currentPhase +1 is returned, otherwise currentPhase is returned
var currPhase = CurrentPhaseNumber;
newPhase = (sense != (currPhase % 2 == 0)) ? currPhase + 1 : currPhase;
// If this participant is going to join the next phase, which means the postPhaseAction is being running, this participants must wait until this done
// and its event is reset.
// Without that, if the postPhaseAction takes long time, this means the event that the current participant is going to wait on is still set
// (FinishPhase didn't reset it yet) so it should wait until it reset
if (newPhase != currPhase)
{
// Wait on the opposite event
if (sense)
{
_oddEvent.Wait();
}
else
{
_evenEvent.Wait();
}
}
//This else to fix the racing where the current phase has been finished, m_currentPhase has been updated but the events have not been set/reset yet
// otherwise when this participant calls SignalAndWait it will wait on a set event however all other participants have not arrived yet.
else
{
if (sense && _evenEvent.IsSet)
{
_evenEvent.Reset();
}
else if (!sense && _oddEvent.IsSet)
{
_oddEvent.Reset();
}
}
break;
}
spinner.SpinOnce();
}
return(newPhase);
}
//
// Taking the Upgradable read lock is like taking a read lock
// but we limit it to a single upgradable at a time.
//
public bool TryEnterUpgradeableReadLock(int millisecondsTimeout)
{
ThreadLockState ctstate = CurrentThreadState;
if (CheckState(ctstate, millisecondsTimeout, LockState.Upgradable))
{
++ctstate.UpgradeableRecursiveCount;
return(true);
}
if (ctstate.LockState.Has(LockState.Read))
{
throw new LockRecursionException("The current thread has already entered read mode");
}
++numUpgradeWaiters;
long start = millisecondsTimeout == -1 ? 0 : sw.ElapsedMilliseconds;
bool taken = false;
bool success = false;
// We first try to obtain the upgradeable right
try {
while (!upgradableEvent.IsSet() || !taken)
{
try {}
finally {
taken = upgradableTaken.TryRelaxedSet();
}
if (taken)
{
break;
}
if (millisecondsTimeout != -1 && (sw.ElapsedMilliseconds - start) > millisecondsTimeout)
{
--numUpgradeWaiters;
return(false);
}
upgradableEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
}
upgradableEvent.Reset();
RuntimeHelpers.PrepareConstrainedRegions();
try {
// Then it's a simple reader lock acquiring
TryEnterReadLock(ComputeTimeout(millisecondsTimeout, start), ref success);
} finally {
if (success)
{
ctstate.LockState |= LockState.Upgradable;
ctstate.LockState &= ~LockState.Read;
--ctstate.ReaderRecursiveCount;
++ctstate.UpgradeableRecursiveCount;
}
else
{
upgradableTaken.Value = false;
upgradableEvent.Set();
}
}
--numUpgradeWaiters;
} catch {
// An async exception occured, if we had taken the upgradable mode, release it
if (taken && !success)
{
upgradableTaken.Value = false;
}
}
return(success);
}
public bool TryEnterWriteLock(int millisecondsTimeout)
{
ThreadLockState ctstate = CurrentThreadState;
if (CheckState(ctstate, millisecondsTimeout, LockState.Write))
{
++ctstate.WriterRecursiveCount;
return(true);
}
++numWriteWaiters;
bool isUpgradable = ctstate.LockState.Has(LockState.Upgradable);
bool registered = false;
bool success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try {
/* If the code goes there that means we had a read lock beforehand
* that need to be suppressed, we also take the opportunity to register
* our interest in the write lock to avoid other write wannabe process
* coming in the middle
*/
if (isUpgradable && rwlock >= RwRead)
{
try {}
finally {
if (Interlocked.Add(ref rwlock, RwWaitUpgrade - RwRead) >> RwReadBit == 0)
{
readerDoneEvent.Set();
}
registered = true;
}
}
int stateCheck = isUpgradable ? RwWaitUpgrade + RwWait : RwWait;
long start = millisecondsTimeout == -1 ? 0 : sw.ElapsedMilliseconds;
do
{
int state = rwlock;
if (state <= stateCheck)
{
try {}
finally {
if (Interlocked.CompareExchange(ref rwlock, RwWrite, state) == state)
{
writerDoneEvent.Reset();
ctstate.LockState ^= LockState.Write;
++ctstate.WriterRecursiveCount;
--numWriteWaiters;
registered = false;
success = true;
}
}
if (success)
{
return(true);
}
}
state = rwlock;
// We register our interest in taking the Write lock (if upgradeable it's already done)
if (!isUpgradable)
{
while ((state & RwWait) == 0)
{
try {}
finally {
if (Interlocked.CompareExchange(ref rwlock, state | RwWait, state) == state)
{
registered = true;
}
}
if (registered)
{
break;
}
state = rwlock;
}
}
// Before falling to sleep
do
{
if (rwlock <= stateCheck)
{
break;
}
if ((rwlock & RwWrite) != 0)
{
writerDoneEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
}
else if ((rwlock >> RwReadBit) > 0)
{
readerDoneEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
}
} while (millisecondsTimeout < 0 || (sw.ElapsedMilliseconds - start) < millisecondsTimeout);
} while (millisecondsTimeout < 0 || (sw.ElapsedMilliseconds - start) < millisecondsTimeout);
--numWriteWaiters;
} finally {
if (registered)
{
Interlocked.Add(ref rwlock, isUpgradable ? -RwWaitUpgrade : -RwWait);
}
}
return(false);
}
bool TryEnterReadLock(int millisecondsTimeout, ref bool success)
{
ThreadLockState ctstate = CurrentThreadState;
if (CheckState(ctstate, millisecondsTimeout, LockState.Read))
{
++ctstate.ReaderRecursiveCount;
return(true);
}
// This is downgrading from upgradable, no need for check since
// we already have a sort-of read lock that's going to disappear
// after user calls ExitUpgradeableReadLock.
// Same idea when recursion is allowed and a write thread wants to
// go for a Read too.
if (ctstate.LockState.Has(LockState.Upgradable) ||
(!noRecursion && ctstate.LockState.Has(LockState.Write)))
{
RuntimeHelpers.PrepareConstrainedRegions();
try {}
finally {
Interlocked.Add(ref rwlock, RwRead);
ctstate.LockState |= LockState.Read;
++ctstate.ReaderRecursiveCount;
success = true;
}
return(true);
}
++numReadWaiters;
int val = 0;
long start = millisecondsTimeout == -1 ? 0 : sw.ElapsedMilliseconds;
do
{
/* Check if a writer is present (RwWrite) or if there is someone waiting to
* acquire a writer lock in the queue (RwWait | RwWaitUpgrade).
*/
if ((rwlock & (RwWrite | RwWait | RwWaitUpgrade)) > 0)
{
writerDoneEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
continue;
}
/* Optimistically try to add ourselves to the reader value
* if the adding was too late and another writer came in between
* we revert the operation.
*/
RuntimeHelpers.PrepareConstrainedRegions();
try {}
finally {
if (((val = Interlocked.Add(ref rwlock, RwRead)) & (RwWrite | RwWait | RwWaitUpgrade)) == 0)
{
/* If we are the first reader, reset the event to let other threads
* sleep correctly if they try to acquire write lock
*/
if (val >> RwReadBit == 1)
{
readerDoneEvent.Reset();
}
ctstate.LockState ^= LockState.Read;
++ctstate.ReaderRecursiveCount;
--numReadWaiters;
success = true;
}
else
{
Interlocked.Add(ref rwlock, -RwRead);
}
}
if (success)
{
return(true);
}
writerDoneEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
} while (millisecondsTimeout == -1 || (sw.ElapsedMilliseconds - start) < millisecondsTimeout);
--numReadWaiters;
return(false);
}
public void CanDelete()
{
CreateRdbmsSchema();
using (var store = NewDocumentStore())
{
var eventSlim = new ManualResetEventSlim(false);
store.SystemDatabase.StartupTasks.OfType<SqlReplicationTask>()
.First().AfterReplicationCompleted += successCount =>
{
if (successCount != 0)
eventSlim.Set();
};
using (var session = store.OpenSession())
{
session.Store(new Order
{
OrderLines = new List<OrderLine>
{
new OrderLine{Cost = 3, Product = "Milk", Quantity = 3},
new OrderLine{Cost = 4, Product = "Bear", Quantity = 2},
}
});
session.SaveChanges();
}
SetupSqlReplication(store, defaultScript);
eventSlim.Wait(TimeSpan.FromMinutes(5));
AssertCounts(1, 2);
eventSlim.Reset();
store.DatabaseCommands.Delete("orders/1", null);
eventSlim.Wait(TimeSpan.FromMinutes(5));
AssertCounts(0, 0);
}
}
private static void SendToRecvFrom_Datagram_UDP(IPAddress leftAddress, IPAddress rightAddress)
{
// TODO #5185: Harden against packet loss
const int DatagramSize = 256;
const int DatagramsToSend = 256;
const int AckTimeout = 1000;
const int TestTimeout = 30000;
var left = new Socket(leftAddress.AddressFamily, SocketType.Dgram, ProtocolType.Udp);
left.BindToAnonymousPort(leftAddress);
var right = new Socket(rightAddress.AddressFamily, SocketType.Dgram, ProtocolType.Udp);
right.BindToAnonymousPort(rightAddress);
var leftEndpoint = (IPEndPoint)left.LocalEndPoint;
var rightEndpoint = (IPEndPoint)right.LocalEndPoint;
var receiverAck = new ManualResetEventSlim();
var senderAck = new ManualResetEventSlim();
var receivedChecksums = new uint?[DatagramsToSend];
var leftThread = new Thread(() =>
{
using (left)
{
EndPoint remote = leftEndpoint.Create(leftEndpoint.Serialize());
var recvBuffer = new byte[DatagramSize];
for (int i = 0; i < DatagramsToSend; i++)
{
int received = left.ReceiveFrom(recvBuffer, SocketFlags.None, ref remote);
Assert.Equal(DatagramSize, received);
Assert.Equal(rightEndpoint, remote);
int datagramId = (int)recvBuffer[0];
Assert.Null(receivedChecksums[datagramId]);
receivedChecksums[datagramId] = Fletcher32.Checksum(recvBuffer, 0, received);
receiverAck.Set();
Assert.True(senderAck.Wait(AckTimeout));
senderAck.Reset();
}
}
});
leftThread.Start();
var sentChecksums = new uint[DatagramsToSend];
using (right)
{
var random = new Random();
var sendBuffer = new byte[DatagramSize];
for (int i = 0; i < DatagramsToSend; i++)
{
random.NextBytes(sendBuffer);
sendBuffer[0] = (byte)i;
int sent = right.SendTo(sendBuffer, SocketFlags.None, leftEndpoint);
Assert.True(receiverAck.Wait(AckTimeout));
receiverAck.Reset();
senderAck.Set();
Assert.Equal(DatagramSize, sent);
sentChecksums[i] = Fletcher32.Checksum(sendBuffer, 0, sent);
}
}
Assert.True(leftThread.Join(TestTimeout));
for (int i = 0; i < DatagramsToSend; i++)
{
Assert.NotNull(receivedChecksums[i]);
Assert.Equal(sentChecksums[i], (uint)receivedChecksums[i]);
}
}
public bool TryEnterWriteLock(int millisecondsTimeout)
{
var currentThreadState = CurrentThreadState;
if (CheckState(currentThreadState, millisecondsTimeout, LockState.Write))
{
++currentThreadState.WriterRecursiveCount;
return(true);
}
++WaitingWriteCount;
var isUpgradable = (currentThreadState.LockState & LockState.Upgradable) > 0;
var registered = false;
var success = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
/* If the code goes there that means we had a read lock beforehand
* that need to be suppressed, we also take the opportunity to register
* our interest in the write lock to avoid other write wannabe process
* coming in the middle
*/
if (isUpgradable && _rwLock >= _rwRead)
{
try
{
}
finally
{
if (Interlocked.Add(ref _rwLock, _rwWaitUpgrade - _rwRead) >> _rwReadBit == 0)
{
_readerDoneEvent.Set();
}
registered = true;
}
}
var stateCheck = isUpgradable ? _rwWaitUpgrade + _rwWait : _rwWait;
var start = millisecondsTimeout == -1 ? 0 : _stopwatch.ElapsedMilliseconds;
var registration = isUpgradable ? _rwWaitUpgrade : _rwWait;
do
{
var state = _rwLock;
if (state <= stateCheck)
{
try
{
}
finally
{
var toWrite = state + _rwWrite - (registered ? registration : 0);
if (Interlocked.CompareExchange(ref _rwLock, toWrite, state) == state)
{
_writerDoneEvent.Reset();
currentThreadState.LockState ^= LockState.Write;
++currentThreadState.WriterRecursiveCount;
--WaitingWriteCount;
registered = false;
success = true;
}
}
if (success)
{
return(true);
}
}
state = _rwLock;
// We register our interest in taking the Write lock (if upgradeable it's already done)
if (!isUpgradable)
{
while ((state & _rwWait) == 0)
{
try
{
}
finally
{
registered |= Interlocked.CompareExchange(ref _rwLock, state | _rwWait, state) == state;
}
if (registered)
{
break;
}
state = _rwLock;
}
}
// Before falling to sleep
do
{
if (_rwLock <= stateCheck)
{
break;
}
if ((_rwLock & _rwWrite) != 0)
{
_writerDoneEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
}
else if (_rwLock >> _rwReadBit > 0)
{
_readerDoneEvent.Wait(ComputeTimeout(millisecondsTimeout, start));
}
} while (millisecondsTimeout < 0 || _stopwatch.ElapsedMilliseconds - start < millisecondsTimeout);
} while (millisecondsTimeout < 0 || _stopwatch.ElapsedMilliseconds - start < millisecondsTimeout);
--WaitingWriteCount;
}
finally
{
if (registered)
{
Interlocked.Add(ref _rwLock, isUpgradable ? -_rwWaitUpgrade : -_rwWait);
}
}
return(false);
}
private static void SendToRecvFromAPM_Datagram_UDP(IPAddress leftAddress, IPAddress rightAddress)
{
// TODO #5185: Harden against packet loss
const int DatagramSize = 256;
const int DatagramsToSend = 256;
const int AckTimeout = 1000;
const int TestTimeout = 30000;
var left = new Socket(leftAddress.AddressFamily, SocketType.Dgram, ProtocolType.Udp);
left.BindToAnonymousPort(leftAddress);
var right = new Socket(rightAddress.AddressFamily, SocketType.Dgram, ProtocolType.Udp);
right.BindToAnonymousPort(rightAddress);
var leftEndpoint = (IPEndPoint)left.LocalEndPoint;
var rightEndpoint = (IPEndPoint)right.LocalEndPoint;
var receiverAck = new ManualResetEventSlim();
var senderAck = new ManualResetEventSlim();
EndPoint receiveRemote = leftEndpoint.Create(leftEndpoint.Serialize());
var receiverFinished = new TaskCompletionSource<bool>();
var receivedChecksums = new uint?[DatagramsToSend];
var receiveBuffer = new byte[DatagramSize];
int receivedDatagrams = -1;
Action<int, EndPoint> receiveHandler = null;
receiveHandler = (received, remote) =>
{
try
{
if (receivedDatagrams != -1)
{
Assert.Equal(DatagramSize, received);
Assert.Equal(rightEndpoint, remote);
int datagramId = (int)receiveBuffer[0];
Assert.Null(receivedChecksums[datagramId]);
receivedChecksums[datagramId] = Fletcher32.Checksum(receiveBuffer, 0, received);
receiverAck.Set();
Assert.True(senderAck.Wait(AckTimeout));
senderAck.Reset();
receivedDatagrams++;
if (receivedDatagrams == DatagramsToSend)
{
left.Dispose();
receiverFinished.SetResult(true);
return;
}
}
else
{
receivedDatagrams = 0;
}
left.ReceiveFromAPM(receiveBuffer, 0, receiveBuffer.Length, SocketFlags.None, receiveRemote, receiveHandler);
}
catch (Exception ex)
{
receiverFinished.SetException(ex);
}
};
receiveHandler(0, null);
var random = new Random();
var senderFinished = new TaskCompletionSource<bool>();
var sentChecksums = new uint[DatagramsToSend];
var sendBuffer = new byte[DatagramSize];
int sentDatagrams = -1;
Action<int> sendHandler = null;
sendHandler = sent =>
{
try
{
if (sentDatagrams != -1)
{
Assert.True(receiverAck.Wait(AckTimeout));
receiverAck.Reset();
senderAck.Set();
Assert.Equal(DatagramSize, sent);
sentChecksums[sentDatagrams] = Fletcher32.Checksum(sendBuffer, 0, sent);
sentDatagrams++;
if (sentDatagrams == DatagramsToSend)
{
right.Dispose();
senderFinished.SetResult(true);
return;
}
}
else
{
sentDatagrams = 0;
}
random.NextBytes(sendBuffer);
sendBuffer[0] = (byte)sentDatagrams;
right.SendToAPM(sendBuffer, 0, sendBuffer.Length, SocketFlags.None, leftEndpoint, sendHandler);
}
catch (Exception ex)
{
senderFinished.SetException(ex);
}
};
sendHandler(0);
Assert.True(receiverFinished.Task.Wait(TestTimeout));
Assert.True(senderFinished.Task.Wait(TestTimeout));
for (int i = 0; i < DatagramsToSend; i++)
{
Assert.NotNull(receivedChecksums[i]);
Assert.Equal(sentChecksums[i], (uint)receivedChecksums[i]);
}
}
public void TestGetReplicator()
{
if (!Boolean.Parse((string)Runtime.Properties["replicationTestsEnabled"]))
{
Assert.Inconclusive("Replication tests disabled.");
return;
}
var replicationUrl = GetReplicationURL();
var replicator = database.CreatePullReplication(replicationUrl);
Assert.IsNotNull(replicator);
Assert.IsTrue(replicator.IsPull);
Assert.IsFalse(replicator.Continuous);
Assert.IsFalse(replicator.IsRunning);
ReplicationStatus lastStatus = replicator.Status;
var mre = new ManualResetEventSlim();
replicator.Changed += (sender, e) =>
{
if(lastStatus != e.Source.Status) {
lastStatus = e.Source.Status;
mre.Set();
}
};
replicator.Start();
Assert.IsTrue(mre.Wait(TimeSpan.FromSeconds(10)), "Timed out waiting for replicator to start");
Assert.IsTrue(replicator.IsRunning);
var activeReplicators = new Replication[database.ActiveReplicators.Count];
database.ActiveReplicators.CopyTo(activeReplicators, 0);
Assert.AreEqual(1, activeReplicators.Length);
Assert.AreEqual(replicator, activeReplicators [0]);
replicator.Stop();
mre.Reset();
Assert.IsTrue(mre.Wait(TimeSpan.FromSeconds(10)), "Timed out waiting for replicator to stop");
Assert.IsFalse(replicator.IsRunning);
activeReplicators = new Replication[database.ActiveReplicators.Count];
database.ActiveReplicators.CopyTo(activeReplicators, 0);
Assert.AreEqual(0, activeReplicators.Length);
}
public void TestPusherChangedEvent()
{
if (!Boolean.Parse((string)GetProperty("replicationTestsEnabled")))
{
Assert.Inconclusive("Replication tests disabled.");
return;
}
using (var remoteDb = _sg.CreateDatabase(TempDbName())) {
CreateDocuments(database, 2);
var push = database.CreatePushReplication(remoteDb.RemoteUri);
List<ReplicationStatus> statusHistory = new List<ReplicationStatus>();
push.Changed += (sender, e) =>
{
statusHistory.Add(e.Status);
if (e.ChangesCount > 0 && e.CompletedChangesCount != e.ChangesCount) {
Assert.AreEqual(ReplicationStatus.Active, e.Status);
}
if (e.Status == ReplicationStatus.Stopped) {
Assert.AreNotEqual(0, e.CompletedChangesCount);
Assert.AreEqual(e.ChangesCount, e.CompletedChangesCount);
}
};
RunReplication(push);
Sleep(1000);
Assert.IsNull(push.LastError);
foreach (var status in statusHistory.Take(statusHistory.Count - 1)) {
Assert.AreEqual(ReplicationStatus.Active, status);
}
Assert.AreEqual(ReplicationStatus.Stopped, statusHistory[statusHistory.Count - 1]);
CreateDocuments(database, 2);
push = database.CreatePushReplication(remoteDb.RemoteUri);
push.Continuous = true;
statusHistory.Clear();
var doneEvent = new ManualResetEventSlim();
push.Changed += (sender, e) =>
{
statusHistory.Add(e.Status);
if(e.Status == ReplicationStatus.Idle && e.ChangesCount == e.CompletedChangesCount) {
doneEvent.Set();
}
};
push.Start();
Assert.IsTrue(doneEvent.Wait(TimeSpan.FromSeconds(60)));
Assert.IsNull(push.LastError);
foreach (var status in statusHistory.Take(statusHistory.Count - 1)) {
Assert.AreEqual(ReplicationStatus.Active, status);
}
Assert.AreEqual(ReplicationStatus.Idle, statusHistory[statusHistory.Count - 1]);
doneEvent.Reset();
statusHistory.Clear();
CreateDocuments(database, 1);
Assert.IsTrue(doneEvent.Wait(TimeSpan.FromSeconds(60)));
Assert.IsNull(push.LastError);
foreach (var status in statusHistory.Take(statusHistory.Count - 1)) {
Assert.IsTrue(status == ReplicationStatus.Active || status == ReplicationStatus.Idle);
}
Assert.AreEqual(ReplicationStatus.Idle, statusHistory[statusHistory.Count - 1]);
doneEvent.Reset();
statusHistory.Clear();
StopReplication(push);
Assert.AreEqual(2, statusHistory.Count);
Assert.AreEqual(ReplicationStatus.Active, statusHistory.First());
Assert.AreEqual(ReplicationStatus.Stopped, statusHistory[1]);
}
}
public void Reset(int count)
{
evt.Reset();
initialCount = initial = count;
}
