private void Run(DateTime time)
{
DateTime now = time;
// pause time temporarily.
timer.Enabled = false;
// run tasks.
// find the min interval to run next task.
int minInterval = int.MaxValue;
lock (locker)
{
foreach (ITask task in tasks.Values)
{
// ignore when task isn't enable or next time is illegal or not the time.
if (!task.Enable || task.NextTime == default(DateTime))
{
continue;
}
// if it's not the time to run this task, calculat the interval.
int interval;
if (task.NextTime > now)
{
interval = (int)(task.NextTime - now).TotalMilliseconds;
minInterval = interval < minInterval ? interval : minInterval;
continue;
}
// if run this task, then create a thread to run it and generate time of next running.
task.LastTime = now;
task.NextTime = task.GenerateNextTime(now);
new Task(() =>
{
task.Run(now);
}).Start();
// calculate the min interval.
interval = (int)(task.NextTime - now).TotalMilliseconds;
minInterval = interval < minInterval ? interval : minInterval;
if (willCacheTime)
{
TaskTimeCache.GetInstance().Update(task.Name, now, task.NextTime);
}
}
}
timer.Interval = minInterval;
timer.Enabled = true;
}
/// <summary>
/// Get the singleton instance.
/// </summary>
/// <returns></returns>
public static TaskTimeCache GetInstance()
{
if (instance == null)
{
lock (locker)
{
if (instance == null)
{
instance = new TaskTimeCache();
}
}
}
return(instance);
}