public void TestSyncedClock()
{
var clock0 = Clocks.SystemTicksClock;
var clock1 = Clocks.SystemTicksClock.Adjust(+100);
Debug.WriteLine($"Test1: time0: {clock0.Time}, time1: {clock1.Time}");
Assert.AreEqual(clock0.Time, clock1.Time - 100, TimeUnit.Millisecond.ConvertTo(1, clock0.Unit));
/* Manually synced */
var synced = SyncedClock.Sync(clock0, clock1.Time);
Debug.WriteLine($"Test2: synced: {clock0.Time}, time1: {clock1.Time}");
Assert.AreEqual(synced.Time, clock1.Time, TimeUnit.Millisecond.ConvertTo(1, clock0.Unit));
/* Delay garenteed */
var random = new Random();
Assert.IsFalse(SyncedClock.TrySync(clock0, () =>
{
SpinWait.SpinUntil(() => false, random.Next(110, 150));
return(clock1.Time);
}, TimeSpan.FromMilliseconds(5), 10, out _));
Assert.IsTrue(SyncedClock.TrySync(clock0, () => clock1.Time, TimeSpan.FromMilliseconds(5), 15, out synced));
Debug.WriteLine($"Test3: synced: {clock0.Time}, time1: {clock1.Time}");
Assert.AreEqual(synced.Time, clock1.Time, TimeUnit.Millisecond.ConvertTo(6, clock0.Unit));
}
public static bool TrySync([NotNull] IClock clock, Func <TimeUnit, long> remoteTimeSupplier, TimeSpan syncWithin, int maxRetryCount, out SyncedClock synced)
{
for (var i = maxRetryCount - 1; i >= 0; i--)
{
var startTicks = clock.GetTicks();
var remoteTime = remoteTimeSupplier(clock.Unit);
var endTicks = clock.GetTicks();
var elapsedTicks = endTicks - startTicks;
if (elapsedTicks / 2 < syncWithin.Ticks)
{
synced = new SyncedClock(clock, TimeUnit.Tick.ConvertTo(startTicks, clock.Unit), remoteTime, 1);
return(true);
}
}
synced = null;
return(false);
}
public static bool TrySync([NotNull] IClock clock, Supplier <long> remoteTimeSupplier, TimeSpan syncWithin, int maxRetryCount, out SyncedClock synced) => TrySync(clock, unit => remoteTimeSupplier(), syncWithin, maxRetryCount, out synced);
