1 /* 2 * PROJECT: ReactOS Kernel - Vista+ APIs 3 * LICENSE: GPL v2 - See COPYING in the top level directory 4 * FILE: lib/drivers/ntoskrnl_vista/ke.c 5 * PURPOSE: Ke functions of Vista+ 6 * PROGRAMMERS: Pierre Schweitzer <pierre@reactos.org> 7 */ 8 9 #include <ntdef.h> 10 #include <ntifs.h> 11 12 NTKERNELAPI 13 ULONG 14 NTAPI 15 KeQueryActiveProcessorCount(OUT PKAFFINITY ActiveProcessors OPTIONAL) 16 { 17 RTL_BITMAP Bitmap; 18 KAFFINITY ActiveMap = KeQueryActiveProcessors(); 19 20 if (ActiveProcessors != NULL) 21 { 22 *ActiveProcessors = ActiveMap; 23 } 24 25 RtlInitializeBitMap(&Bitmap, (PULONG)&ActiveMap, sizeof(ActiveMap) * 8); 26 return RtlNumberOfSetBits(&Bitmap); 27 } 28