コード例 #1
0
        public static Scope EnterBackgroundProcessingMode()
        {
            Thread.BeginThreadAffinity();
            IntPtr hThread = SafeNativeMethods.GetCurrentThread();

            if (EnvironmentUtility.IsWindowsVistaOrLater() && UnsafeNativeMethods.SetThreadPriority(hThread,
                                                                                                    Win32.THREAD_MODE_BACKGROUND_BEGIN))
            {
                // OS supports background processing; return Scope that exits this mode
                return(Scope.Create(() =>
                {
                    UnsafeNativeMethods.SetThreadPriority(hThread, Win32.THREAD_MODE_BACKGROUND_END);
                    Thread.EndThreadAffinity();
                }));
            }

            // OS doesn't support background processing mode (or setting it failed)
            Thread.EndThreadAffinity();
            return(Scope.Empty);
        }