private Boolean TryAdd(ITriggerExecute trigger)
{
lock (m_lock)
{
try
{
String id = trigger.GetId();
if (String.IsNullOrWhiteSpace(id))
{
return(false);
}
if (m_ids.Contains(id))
{
TriggerStack.PushExiested(trigger);
return(false);
}
m_ids.Add(id);
return(true);
}
catch (Exception e)
{
LogHelper.Error("执行定时任务的TryAdd报错,请查证.错误代码" + e.Message);
}
return(false);
}
}
private void ExecuteTrigger(ITriggerExecute trigger)
{
try
{
if (!trigger.Execute(m_provider))
{
TriggerStack.PushExiested(trigger);
}
else
{
TriggerStack.Remove(trigger);
}
}
catch (Exception)
{
TriggerStack.PushExiested(trigger);
}
finally
{
String id = trigger.GetId();
Remove(id);
}
}
/// <summary>
/// 定时任务执行程序
/// </summary>
/// <param name="state"></param>
public void Register(Object state)
{
Int32 num = 2;
DateTime date = DateTime.Now;
Queue <ITriggerExecute> all = TriggerStack.GetAll();
Int32 count = all.Count;
while (Volatile.Read(ref count) > 0)
{
try
{
if (all.Count == 0)
{
//超时直接丢弃
Thread.Sleep(10);
continue;
}
//开启线程超过2个,那么就等10ms重新循环,避免始终执行线程操作
//注意,这里会出现如果队列只剩2个数据时候,会在第二次执行
//完毕后,有一个线程出现死锁,那么会出现死锁状态丢弃状态
Interlocked.Decrement(ref num);
var item = all.Dequeue();
date = DateTime.Now.AddSeconds(10);
if (!TryAdd(item))
{
continue;
}
Task.Run(() =>
{
ExecuteTrigger(item);
Interlocked.Decrement(ref count);
if (Volatile.Read(ref num) < 2)
{
Interlocked.Increment(ref num);
}
});
//给线程一个超时时间,如果当前线程超时1分钟,
//那么会被丢弃并且记录日志
//如果所有线程执行完毕后,就继续执行下一笔数据
//Warn,如果所有的数据都丢失,那么会产生大量的后台线程执行
while (Volatile.Read(ref num) <= 0)
{
if (DateTime.Now < date)
{
Thread.Sleep(10);
}
else
{
Volatile.Write(ref num, 1);
LogHelper.Critical($"TimeTrigger执行出现10s超时异常:{m_ids.Aggregate((i1, i2) => $"{i1}-{i2}")}");
}
}
}
catch (Exception e)
{
LogHelper.Warn($"定时任务出现错误{e.Message}");
Interlocked.Decrement(ref count);
}
}
RemoveAll();
m_timer.Change(1000 * 1, Timeout.Infinite);
}
