c# - 跨用户 C# 互斥

Question

我的应用程序被迫使用第 3 方模块，如果在同一台机器上同时启动两个实例，该模块将使 Windows 蓝屏。为了解决这个问题，我的 C# 应用程序有一个互斥量:

static Mutex mutex = new Mutex(true, "{MyApp_b9d19f99-b83e-4755-9b11-d204dbd6d096}");  

然后我检查它是否存在 - 如果存在，我会显示一条错误消息并关闭应用程序:

bool IsAnotherInstanceRunning()
{
    if (mutex.WaitOne(TimeSpan.Zero, true))
        return (true);
    else
        return (false);
}

问题是如果两个用户可以同时登录并打开应用程序，IsAnotherInstanceRunning() 将返回 false。

我该如何解决这个问题？

Answer 1

用“Global\”作为互斥体名称的前缀。

static Mutex mutex = new Mutex(true, "Global\MyApp_b9d19f99-b83e-4755-9b11-d204dbd6d096");  

来自 http://msdn.microsoft.com/en-us/library/system.threading.mutex.aspx :

If its name begins with the prefix "Global\", the mutex is visible in all terminal server sessions. If its name begins with the prefix "Local\", the mutex is visible only in the terminal server session where it was created. In that case, a separate mutex with the same name can exist in each of the other terminal server sessions on the server. If you do not specify a prefix when you create a named mutex, it takes the prefix "Local\".