internal static extern int select([In] int ignoredParam, [In][Out] IntPtr[] readfds, [In][Out] IntPtr[] writefds, [In][Out] IntPtr[] exceptfds, [In] ref timeval timeout);
/// <summary>
/// 循环监视已注册的Socket,等待这些Socket发生已注册的事件
/// </summary>
/// <param name="interval">微秒</param>
public static void Run(long interval)
{
_stopped = false;
_last_time = Environment.TickCount;
timeval tv = new timeval(interval);
while (true)
{
if (_stopped)
{
RecvList.Clear();
SendList.Clear();
ErrorList.Clear();
EventCallback.Clear();
CheckCallback.Clear();
_last_time = Environment.TickCount;
return;
}
IntPtr[] rlist = SocketSetToIntPtrArray(RecvList);
IntPtr[] slist = SocketSetToIntPtrArray(SendList);
IntPtr[] elist = SocketSetToIntPtrArray(ErrorList);
int res;
if (interval > 0)
{
res = select(0, rlist, slist, elist, ref tv);
}
else
{
res = select(0, rlist, slist, elist, IntPtr.Zero);
}
if (res > 0)
{ //rlist、wlist、xlist第一个元素表示文件描述符数量
bool _first = true;
foreach (IntPtr ptr in rlist)
{
if (!_first)
{
EventCallback[(Socket)RecvList[ptr]]((Socket)RecvList[ptr], IOMode.recv);
}
else
{
_first = false;
}
}
_first = true;
foreach (IntPtr ptr in slist)
{
if (!_first)
{
EventCallback[(Socket)SendList[ptr]]((Socket)SendList[ptr], IOMode.send);
}
else
{
_first = false;
}
}
_first = true;
foreach (IntPtr ptr in elist)
{
if (!_first)
{
EventCallback[(Socket)ErrorList[ptr]]((Socket)ErrorList[ptr], IOMode.error);
}
else
{
_first = false;
}
}
}
else if (res == 0)
{
//Logging.Error("SELECT调用超时");
}
else
{
//Logging.Error($"SELECT调用错误:{GetErrorMsg(GetLastError())}");
continue;
}
//定时触发需要定期执行的方法
if (Environment.TickCount - _last_time >= _timeout_interval)
{
foreach (Action func in CheckCallback)
{
func();
}
_last_time = Environment.TickCount;
}
}
}