标签：Core Asp SemaphoreSlim name int 线程 semaphore Console
/设置同时访问线程最大数量
static SemaphoreSlim _semaphore = new SemaphoreSlim(4);
static void AccessDatabase(string name, int seconds)
{
Console.WriteLine($"{name} waits to access a database");
_semaphore.Wait();
Console.WriteLine($"{name} was granted an access to a database");
Thread.Sleep(TimeSpan.FromSeconds(seconds));
Console.WriteLine($"{name} is completed");
_semaphore.Release();
}
static void Main(string[] args)
{
for (int i = 1; i < 6; i++)
{
string threadName = $"Thread{i}";
int secondsToWait = 2 + 2 * i;
var t = new Thread(() => AccessDatabase(threadName, secondsToWait));
t.Start();
}
}
上面的代码 new 了一个 SemaphoreSlim 对象，设置访问线程最大数量为 4，开启 5 个线程，发现，线程 5 一开始一直处于等待状态，直到线程 1 完成了，调用了 _semaphore.Release() 释放，线程 5 才能执行后面的代码
标签：Core,
Asp,
SemaphoreSlim,
name,
int,
线程,
semaphore,
Console
From： https://www.cnblogs.com/wangtiantian/p/17563617.html