/// <summary>
/// 外部调用，每隔一定的时间Tick一次
/// </summary>
public virtual void Tick()
{
if (mIsPaused)
{
return;
}
uint now = GetCurrentMillisecond();
uint loopNum = now > mCheckTime ? (now - mCheckTime) / Granularity : 0;
TimeWheel wheel = mTimeWheels[0];
for (uint i = 0; i < loopNum; ++i)
{
LinkedList <TimerNode> spoke;
if (wheel.TryGetSpoke((int)wheel.CurrentSpokeIndex, out spoke))
{
for (var timerNodeHost = spoke.First; timerNodeHost != null;)
{
var nextTimerNodeHost = timerNodeHost.Next;
timerNodeHost.List.Remove(timerNodeHost);
timerNodeHost.Value.TimerNodeHost = null;
--mTotalTimerNum;
AddToReadyList(timerNodeHost);
timerNodeHost = nextTimerNodeHost;
}
}
mCheckTime += Granularity;
++wheel.CurrentSpokeIndex;
if (wheel.CurrentSpokeIndex >= wheel.MaxSpokes)
{
wheel.CurrentSpokeIndex = 0;
Cascade(1);
}
}
DoTimeoutCallback();
if (mAutoPauseMode && mTotalTimerNum <= 0)
{
Pause();
}
}
protected TimerManager(uint granularity = 20)
{
if (granularity <= 0)
{
throw new Exception("Granularity must be > 0");
}
Granularity = granularity;
mAutoPauseMode = true;
mTimeWheels = new TimeWheel[5];
mTimeWheels[0] = new TimeWheel(256);
for (int i = 1; i < 5; ++i)
{
mTimeWheels[i] = new TimeWheel(64);
}
mReadyToInvokeList = new LinkedList <TimerNode>();
mTimerNodeCache = new Stack <TimerNode>();
}
/// <summary>
/// 上一个时间轮转过一轮后，检索下一个时间轮当前插槽中的定时器
/// </summary>
/// <param name="wheelIndex"></param>
protected virtual void Cascade(uint wheelIndex)
{
if (wheelIndex < 1 || wheelIndex >= 5)
{
return;
}
TimeWheel wheel = mTimeWheels[wheelIndex];
int currentSpokeIndex = (int)wheel.CurrentSpokeIndex;
++wheel.CurrentSpokeIndex;
LinkedList <TimerNode> spoke;
if (wheel.TryGetSpoke(currentSpokeIndex, out spoke))
{
for (var timerNodeHost = spoke.First; timerNodeHost != null;)
{
var nextTimerNodeHost = timerNodeHost.Next;
timerNodeHost.List.Remove(timerNodeHost);
var timerNode = timerNodeHost.Value;
--mTotalTimerNum;
if (timerNode.DeadTime <= mCheckTime)
{
timerNode.TimerNodeHost = null;
AddToReadyList(timerNodeHost);
}
else
{
AddTimerNode(timerNode.DeadTime - mCheckTime, timerNode);
}
timerNodeHost = nextTimerNodeHost;
}
}
if (wheel.CurrentSpokeIndex >= wheel.MaxSpokes)
{
wheel.CurrentSpokeIndex = 0;
Cascade(++wheelIndex);
}
}
