我有许多读取 xml 文件的服务。为了确保没有冲突，我使用互斥锁。无论出于何种原因，如果我的所有服务都由同一用户运行，则没有问题。但是，如果有不同的用户运行这些服务，即使一个服务释放了互斥锁，另一个服务在调用 enter route mutex 时也会出现以下异常“Unhandled Exception: System.TypeInitializationException: The type initializer for 'createMutex.Program' throw an an异常。---> System.UnauthorizedAccessException：对路径“RETEST_MUTEX”的访问被拒绝。”
public static readonly String ROUTE_MUTEX_STRING = "RETEST_MUTEX";
private static Mutex _routeMutex = new Mutex(false, ROUTE_MUTEX_STRING);
/// <summary>
/// Thin wrapper around the static routeMutex WaitOne method
/// Always call ExitRouteMutex when done in protected area
/// </summary>
/// <param name="millis_timeout"></param>
/// <returns>true if signaled, like WaitOne</returns>
public static bool EnterRouteMutex(int millis_timeout)
{
try
{
return _routeMutex.WaitOne(millis_timeout, false);
}
catch (AbandonedMutexException ame)
{
// swallow this exception - don't want to depend on other apps being healthy - like pre .NET 2.0 behavior
// data integrity will be checked
return _routeMutex.WaitOne(millis_timeout, false);
}
}
public static void ExitRouteMutex()
{
try
{
_routeMutex.ReleaseMutex();
}
catch (ApplicationException)
{
// swallow, reduce complexity to client
}
}
static void Main(string[] args)
{
Console.WriteLine("Start");
bool get = EnterRouteMutex(1000);
System.Console.WriteLine("Mutex created Press enter " + get.ToString());
Console.ReadLine();
ExitRouteMutex();
Console.WriteLine("Mutex Release");
System.Console.WriteLine("Press enter");
Console.ReadLine();
}