update for HEAD-2003021201

[reactos.git] / lib / kernel32 / misc / perfcnt.c

diff --git a/lib/kernel32/misc/perfcnt.c b/lib/kernel32/misc/perfcnt.c
new file mode 100644 (file)
index 0000000..c8bdaa4
--- /dev/null
+++ b/lib/kernel32/misc/perfcnt.c
@@ -0,0 +1,84 @@
+/*
+ *  ReactOS kernel
+ *  Copyright (C) 2003 ReactOS Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/* $Id$ */
+/*
+ * PROJECT:         ReactOS system libraries
+ * FILE:            lib/kernel32/misc/perfcnt.c
+ * PURPOSE:         Performance counter
+ * PROGRAMMER:      Eric Kohl
+ */
+
+/* INCLUDES *****************************************************************/
+
+#include <k32.h>
+
+#define NDEBUG
+#include <kernel32/kernel32.h>
+
+
+/* FUNCTIONS ****************************************************************/
+
+WINBOOL STDCALL
+QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount)
+{
+  LARGE_INTEGER Frequency;
+  NTSTATUS Status;
+
+  Status = NtQueryPerformanceCounter(lpPerformanceCount,
+                                    &Frequency);
+  if (!NT_SUCCESS(Status))
+  {
+    SetLastErrorByStatus(Status);
+    return(FALSE);
+  }
+
+  if (Frequency.QuadPart == 0ULL)
+  {
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return(FALSE);
+  }
+
+  return(TRUE);
+}
+
+
+WINBOOL STDCALL
+QueryPerformanceFrequency(LARGE_INTEGER *lpFrequency)
+{
+  LARGE_INTEGER Count;
+  NTSTATUS Status;
+
+  Status = NtQueryPerformanceCounter(&Count,
+                                    lpFrequency);
+  if (!NT_SUCCESS(Status))
+  {
+    SetLastErrorByStatus(Status);
+    return(FALSE);
+  }
+
+  if (lpFrequency->QuadPart == 0ULL)
+  {
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return(FALSE);
+  }
+
+  return(TRUE);
+}
+
+/* EOF */