3 * Copyright (C) 2003 ReactOS Team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * PROJECT: ReactOS system libraries
22 * FILE: lib/kernel32/misc/perfcnt.c
23 * PURPOSE: Performance counter
24 * PROGRAMMER: Eric Kohl
27 /* INCLUDES *****************************************************************/
32 #include <kernel32/kernel32.h>
35 /* FUNCTIONS ****************************************************************/
41 QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount)
43 LARGE_INTEGER Frequency;
46 Status = NtQueryPerformanceCounter(lpPerformanceCount,
48 if (!NT_SUCCESS(Status))
50 SetLastErrorByStatus(Status);
54 if (Frequency.QuadPart == 0ULL)
56 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
68 QueryPerformanceFrequency(LARGE_INTEGER *lpFrequency)
73 Status = NtQueryPerformanceCounter(&Count,
75 if (!NT_SUCCESS(Status))
77 SetLastErrorByStatus(Status);
81 if (lpFrequency->QuadPart == 0ULL)
83 SetLastError(ERROR_CALL_NOT_IMPLEMENTED);