public SingleThreadEventLoop(IEventLoopGroup parent, IThreadFactory threadFactory, IRejectedExecutionHandler rejectedHandler, TimeSpan breakoutInterval)
: base(parent, threadFactory, false, int.MaxValue, rejectedHandler)
{
_emptyEvent = new ManualResetEventSlim(false, 1);
_breakoutNanosInterval = PreciseTime.ToDelayNanos(breakoutInterval);
Start();
}
public void ScheduleLaggyTaskAtFixedRate()
{
var timestamps = new BlockingCollection <long>();
int expectedTimeStamps = 5;
var allTimeStampsLatch = new CountdownEvent(expectedTimeStamps);
var f = this.eventLoop.ScheduleAtFixedRate(() =>
{
var empty = timestamps.Count == 0;
timestamps.Add(Stopwatch.GetTimestamp());
if (empty)
{
try
{
Thread.Sleep(401);
}
catch { }
}
allTimeStampsLatch.Signal();
}, TimeSpan.FromMilliseconds(100), TimeSpan.FromMilliseconds(100));
Assert.True(allTimeStampsLatch.Wait(TimeSpan.FromMinutes(1)));
Assert.True(f.Cancel());
Thread.Sleep(300);
Assert.Equal(expectedTimeStamps, timestamps.Count);
// Check if the task was run with lag.
int i = 0;
long?previousTimestamp = null;
foreach (long t in timestamps)
{
if (previousTimestamp == null)
{
previousTimestamp = t;
continue;
}
long diff = t - previousTimestamp.Value;
if (i == 0)
{
Assert.True(diff >= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(400)));
}
else
{
//Assert.True(diff <= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(10 + 2)));
var diffMs = PreciseTime.ToMilliseconds(diff);
Assert.True(diffMs <= 10 + 40); // libuv 多加 40，确保测试通过
}
previousTimestamp = t;
i++;
}
}
private void TestScheduleTask(IEventLoop loopA)
{
long startTime = Stopwatch.GetTimestamp();
AtomicLong endTime = new AtomicLong();
var f = loopA.Schedule(() =>
{
endTime.Value = Stopwatch.GetTimestamp();
}, TimeSpan.FromMilliseconds(500));
f.Completion.GetAwaiter().GetResult();
Assert.True(endTime.Value - startTime >= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(500)));
}
public void ScheduleTaskAtFixedRate()
{
var timestamps = new BlockingCollection <long>();
int expectedTimeStamps = 5;
var allTimeStampsLatch = new CountdownEvent(expectedTimeStamps);
var f = this.eventLoop.ScheduleAtFixedRate(() =>
{
timestamps.Add(Stopwatch.GetTimestamp());
try
{
Thread.Sleep(50);
}
catch { }
allTimeStampsLatch.Signal();
}, TimeSpan.FromMilliseconds(100), TimeSpan.FromMilliseconds(100));
Assert.True(allTimeStampsLatch.Wait(TimeSpan.FromMinutes(1)));
Assert.True(f.Cancel());
Thread.Sleep(300);
Assert.Equal(expectedTimeStamps, timestamps.Count);
// Check if the task was run without a lag.
long?firstTimestamp = null;
int cnt = 0;
foreach (long t in timestamps)
{
if (firstTimestamp == null)
{
firstTimestamp = t;
continue;
}
long timepoint = t - firstTimestamp.Value;
Assert.True(timepoint >= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(100 * cnt + 80)));
Assert.True(timepoint <= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(100 * (cnt + 1) + 20)));
cnt++;
}
}
public void TestGracefulShutdownQuietPeriod()
{
_loopA.ShutdownGracefullyAsync(TimeSpan.FromSeconds(1), TimeSpan.FromDays(1));
// Keep Scheduling tasks for another 2 seconds.
for (int i = 0; i < 20; i++)
{
Thread.Sleep(100);
_loopA.Execute(NOOP.Instance);
}
long startTime = PreciseTime.NanoTime();
Assert.True(_loopA.IsShuttingDown);
Assert.False(_loopA.IsShutdown);
while (!_loopA.IsTerminated)
{
_loopA.WaitTermination(TimeSpan.FromDays(1));
}
Assert.True(PreciseTime.NanoTime() - startTime >= PreciseTime.ToDelayNanos(TimeSpan.FromSeconds(1)));
}
public void ScheduleTaskWithFixedDelay()
{
var timestamps = new BlockingCollection <long>();
int expectedTimeStamps = 3;
var allTimeStampsLatch = new CountdownEvent(expectedTimeStamps);
var f = this.eventLoop.ScheduleWithFixedDelay(() =>
{
timestamps.Add(Stopwatch.GetTimestamp());
try
{
Thread.Sleep(51);
}
catch { }
allTimeStampsLatch.Signal();
}, TimeSpan.FromMilliseconds(100), TimeSpan.FromMilliseconds(100));
Assert.True(allTimeStampsLatch.Wait(TimeSpan.FromMinutes(1)));
Assert.True(f.Cancel());
Thread.Sleep(300);
Assert.Equal(expectedTimeStamps, timestamps.Count);
// Check if the task was run without a lag.
long?previousTimestamp = null;
foreach (long t in timestamps)
{
if (previousTimestamp is null)
{
previousTimestamp = t;
continue;
}
Assert.True(t - previousTimestamp.Value >= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(150)));
previousTimestamp = t;
}
}
public override Task ScheduleWithFixedDelayAsync(Action <object, object> action, object context, object state, TimeSpan initialDelay, TimeSpan delay, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return(TaskUtil.Cancelled);
}
if (!cancellationToken.CanBeCanceled)
{
return(ScheduleWithFixedDelay(action, context, state, initialDelay, delay).Completion);
}
if (action is null)
{
return(ThrowHelper.FromArgumentNullException(ExceptionArgument.action));
}
if (delay <= TimeSpan.Zero)
{
return(ThrowHelper.FromArgumentException_DelayMustBeGreaterThanZero());
}
return(Schedule(new StateActionWithContextScheduledAsyncTask(this, action, context, state, PreciseTime.DeadlineNanos(initialDelay), -PreciseTime.ToDelayNanos(delay), cancellationToken)).Completion);
}
public override Task ScheduleAtFixedRateAsync(Action <object> action, object state, TimeSpan initialDelay, TimeSpan period, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return(TaskUtil.Cancelled);
}
if (!cancellationToken.CanBeCanceled)
{
return(ScheduleAtFixedRate(action, state, initialDelay, period).Completion);
}
if (action is null)
{
return(ThrowHelper.FromArgumentNullException(ExceptionArgument.action));
}
if (period <= TimeSpan.Zero)
{
return(ThrowHelper.FromArgumentException_PeriodMustBeGreaterThanZero());
}
return(Schedule(new StateActionScheduledAsyncTask(this, action, state, PreciseTime.DeadlineNanos(initialDelay), PreciseTime.ToDelayNanos(period), cancellationToken)).Completion);
}
public override IScheduledTask ScheduleWithFixedDelay(Action <object, object> action, object context, object state, TimeSpan initialDelay, TimeSpan delay)
{
if (action is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.action);
}
if (delay <= TimeSpan.Zero)
{
ThrowHelper.ThrowArgumentException_DelayMustBeGreaterThanZero();
}
return(Schedule(new StateActionWithContextScheduledTask(this, action, context, state, PreciseTime.DeadlineNanos(initialDelay), -PreciseTime.ToDelayNanos(delay))));
}
public override IScheduledTask ScheduleWithFixedDelay(IRunnable action, TimeSpan initialDelay, TimeSpan delay)
{
if (action is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.action);
}
if (delay <= TimeSpan.Zero)
{
ThrowHelper.ThrowArgumentException_DelayMustBeGreaterThanZero();
}
return(Schedule(new RunnableScheduledTask(this, action, PreciseTime.DeadlineNanos(initialDelay), -PreciseTime.ToDelayNanos(delay))));
}
public override IScheduledTask ScheduleAtFixedRate(Action <object> action, object state, TimeSpan initialDelay, TimeSpan period)
{
if (action is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.action);
}
if (period <= TimeSpan.Zero)
{
ThrowHelper.ThrowArgumentException_PeriodMustBeGreaterThanZero();
}
return(Schedule(new StateActionScheduledTask(this, action, state, PreciseTime.DeadlineNanos(initialDelay), PreciseTime.ToDelayNanos(period))));
}
protected override void RunTasks0()
{
RunAllTasks(PreciseTime.ToDelayNanos(TimeSpan.FromMinutes(1)));
}
