GetCurrentThreadId() 已被弃用,MSDN 声明 ManagedThreadId 替换它。
但是,我得到了不同的结果,后者导致我的代码出现异常。我的代码改编自这篇文章。
public static void SetThreadProcessorAffinity(params byte[] cpus)
{
if (cpus == null)
{
throw new ArgumentNullException("cpus");
}
if (cpus.Length == 0)
{
throw new ArgumentException(@"You must specify at least one CPU.", "cpus");
}
// Supports up to 64 processors
long cpuMask = 0;
byte max = (byte)Math.Min(Environment.ProcessorCount, 64);
foreach (byte cpu in cpus)
{
if (cpu >= max)
{
throw new ArgumentException(@"Invalid CPU number.");
}
cpuMask |= 1L << cpu;
}
// Ensure managed thread is linked to OS thread; does nothing on default host in current .NET versions
Thread.BeginThreadAffinity();
#pragma warning disable 618
// The call to BeginThreadAffinity guarantees stable results for GetCurrentThreadId,
// so we ignore the obsolete warning.
int osThreadId = AppDomain.GetCurrentThreadId();
osThreadId = Thread.CurrentThread.ManagedThreadId;// NOT THE SAME VALUE
#pragma warning restore 618
// Find the ProcessThread for this thread
ProcessThread thread = Process.GetCurrentProcess().Threads.Cast<ProcessThread>()
.Where(t => t.Id == osThreadId).Single();
// Set the thread's processor affinity
thread.ProcessorAffinity = new IntPtr(cpuMask);
}
我可以看到问题是一个获取线程的进程 ID,而另一个获取应用程序的进程 ID。
如何在不使用不推荐使用的方法的情况下使其工作?最初的 Stack Overflow 文章声明要使用P/Invoke,但我不知道如何使用,这不是 MSDN 所说的。