private static async Task <notifier> get(string chromosome, long userid)
{
await locker.WaitAsync();
var dv = list.FirstOrDefault(i => i.chromosome == chromosome && i.userid == userid);
if (dv == null)
{
dv = new notifier(chromosome, userid);
list.Add(dv);
}
locker.Release();
return(dv);
}
public static async void add(e_chromosome chromosome, long userid, Action sync)
{
notifier dv = await get(chromosome.ToString(), userid);
dv.sync += sync;
}