有什么用
System.Threading.Thread.Sleep(-1)
我希望这会引发异常，正如 Thread.Sleep 的文档所说
The value of timeout is negative and is not equal to Timeout.Infinite in milliseconds, or is greater than Int32.MaxValue milliseconds.
但是，上面的 Thread.Sleep(-1) 不会抛出异常。当我查看 ReferenceSource 时，我看到了
[System.Security.SecuritySafeCritical] // auto-generated
public static void Sleep(int millisecondsTimeout)
{
SleepInternal(millisecondsTimeout);
// Ensure we don't return to app code when the pause is underway
if(AppDomainPauseManager.IsPaused)
AppDomainPauseManager.ResumeEvent.WaitOneWithoutFAS();
}
public static void Sleep(TimeSpan timeout)
{
long tm = (long)timeout.TotalMilliseconds;
if (tm < -1 || tm > (long) Int32.MaxValue)
throw new ArgumentOutOfRangeException("timeout",Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegOrNegative1"));
Sleep((int)tm);
}
看起来它不会抛出负时间跨度，而只会抛出小于 -1 的负时间跨度。
确实如此
Thread.Sleep(-2);
确实会崩溃。
那么这里-1的特例是什么？ Thread.Sleep(-1) 实际上在做什么？
最佳答案
Timeout.Infinite 的值== -1。
Timeout.Infinite: A constant used to specify an infinite waiting period, for threading methods that accept an Int32 parameter.
关于c# - 线程. sleep (-1)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50269871/