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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Runtime/testcase/ntGetTimerResolution.cpp
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/testcase/ntGetTimerResolution.cpp')
-rw-r--r--src/VBox/Runtime/testcase/ntGetTimerResolution.cpp95
1 files changed, 95 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/ntGetTimerResolution.cpp b/src/VBox/Runtime/testcase/ntGetTimerResolution.cpp
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+/* $Id: ntGetTimerResolution.cpp $ */
+/** @file
+ * IPRT - Win32 (NT) testcase for getting the timer resolution.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * 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, in version 3 of the
+ * License.
+ *
+ * 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, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#define _WIN32_WINNT 0x0500
+#include <iprt/win/windows.h>
+#include <iprt/types.h>
+#include <stdio.h>
+
+extern "C" {
+/* from sysinternals. */
+NTSYSAPI LONG NTAPI NtQueryTimerResolution(OUT PULONG MaximumResolution, OUT PULONG MinimumResolution, OUT PULONG CurrentResolution);
+}
+
+
+int main()
+{
+ ULONG Min = UINT32_MAX;
+ ULONG Max = UINT32_MAX;
+ ULONG Cur = UINT32_MAX;
+ NtQueryTimerResolution(&Max, &Min, &Cur);
+ printf("NtQueryTimerResolution -> Max=%08luns Min=%08luns Cur=%08luns\n", Min * 100, Max * 100, Cur * 100);
+
+#if 0
+ /* figure out the 100ns relative to the 1970 epoc. */
+ SYSTEMTIME st;
+ st.wYear = 1970;
+ st.wMonth = 1;
+ st.wDayOfWeek = 4; /* Thor's day. */
+ st.wDay = 1;
+ st.wHour = 0;
+ st.wMinute = 0;
+ st.wSecond = 0;
+ st.wMilliseconds = 0;
+
+ FILETIME ft;
+ if (SystemTimeToFileTime(&st, &ft))
+ {
+ printf("epoc is %I64u (0x%08x%08x)\n", ft, ft.dwHighDateTime, ft.dwLowDateTime);
+ if (FileTimeToSystemTime(&ft, &st))
+ printf("unix epoc: %d-%02d-%02d %02d:%02d:%02d.%03d (week day %d)\n",
+ st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, st.wMilliseconds, st.wDayOfWeek);
+ else
+ printf("FileTimeToSystemTime failed, lasterr=%d\n", GetLastError());
+ }
+ else
+ printf("SystemTimeToFileTime failed, lasterr=%d\n", GetLastError());
+
+ ft.dwHighDateTime = 0;
+ ft.dwLowDateTime = 0;
+ if (FileTimeToSystemTime(&ft, &st))
+ printf("nt time start: %d-%02d-%02d %02d:%02d:%02d.%03d (week day %d)\n",
+ st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, st.wMilliseconds, st.wDayOfWeek);
+ else
+ printf("FileTimeToSystemTime failed, lasterr=%d\n", GetLastError());
+#endif
+ return 0;
+}
+