/// <summary>实例化一个不可重入的定时器</summary>
/// <param name="callback">委托</param>
/// <param name="state">用户数据</param>
/// <param name="dueTime">多久之后开始。毫秒</param>
/// <param name="period">间隔周期。毫秒</param>
/// <param name="scheduler">调度器</param>
public TimerX(WaitCallback callback, Object state, Int32 dueTime, Int32 period, String scheduler = null)
{
if (dueTime < 0)
{
throw new ArgumentOutOfRangeException(nameof(dueTime));
}
//if (period < 0) throw new ArgumentOutOfRangeException("period");
Callback = new WeakAction <Object>(callback) ?? throw new ArgumentNullException(nameof(callback));
State = state;
Period = period;
NextTime = DateTime.Now.AddMilliseconds(dueTime);
Scheduler = scheduler.IsNullOrEmpty() ? TimerScheduler.Default : TimerScheduler.Create(scheduler);
Scheduler.Add(this);
}
/// <summary>实例化一个绝对定时器</summary>
/// <param name="callback">委托</param>
/// <param name="state">用户数据</param>
/// <param name="startTime">绝对开始时间</param>
/// <param name="period">间隔周期。毫秒</param>
/// <param name="scheduler">调度器</param>
public TimerX(WaitCallback callback, Object state, DateTime startTime, Int32 period, String scheduler = null)
{
if (startTime <= DateTime.MinValue)
{
throw new ArgumentOutOfRangeException(nameof(startTime));
}
//if (period < 0) throw new ArgumentOutOfRangeException("period");
Callback = new WeakAction <Object>(callback) ?? throw new ArgumentNullException(nameof(callback));
State = state;
Period = period;
Absolutely = true;
var now = DateTime.Now;
var next = startTime;
if (period % 1000 == 0)
{
var s = period / 1000;
while (next < now)
{
next = next.AddSeconds(s);
}
}
else
{
while (next < now)
{
next = next.AddMilliseconds(period);
}
}
NextTime = next;
Scheduler = scheduler.IsNullOrEmpty() ? TimerScheduler.Default : TimerScheduler.Create(scheduler);
Scheduler.Add(this);
}