From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp | 159 ++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp (limited to 'src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp') diff --git a/src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp b/src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp new file mode 100644 index 00000000..32d0aa74 --- /dev/null +++ b/src/VBox/Runtime/r0drv/nt/time-r0drv-nt.cpp @@ -0,0 +1,159 @@ +/* $Id: time-r0drv-nt.cpp $ */ +/** @file + * IPRT - Time, Ring-0 Driver, Nt. + */ + +/* + * Copyright (C) 2007-2023 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 . + * + * 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 LOG_GROUP RTLOGGROUP_TIME +#include "the-nt-kernel.h" +#include "internal-r0drv-nt.h" +#include + + +/* + * The KeQueryTickCount macro isn't compatible with NT 3.1, use the + * exported KPI instead. + */ +#ifdef RT_ARCH_X86 +# undef KeQueryTickCount +extern "C" NTKERNELAPI void NTAPI KeQueryTickCount(PLARGE_INTEGER); +#endif + + +DECLINLINE(uint64_t) rtTimeGetSystemNanoTS(void) +{ + /* + * Note! The time source we use here must be exactly the same as in + * the ring-3 code! + * + * Using interrupt time is the simplest and requires the least calculation. + * It is also accounting for suspended time. Unfortuantely, there is no + * ring-3 for reading it... but that won't stop us. + * + * Using the tick count is problematic in ring-3 on older windows version + * as we can only get the 32-bit tick value, i.e. we'll roll over sooner or + * later. + */ +#if 1 + /* Interrupt time. */ + LARGE_INTEGER InterruptTime; + if (g_pfnrtKeQueryInterruptTimePrecise) + { + ULONG64 QpcTsIgnored; + InterruptTime.QuadPart = g_pfnrtKeQueryInterruptTimePrecise(&QpcTsIgnored); + } +# ifdef RT_ARCH_X86 + else if (g_pfnrtKeQueryInterruptTime) /* W2K+ */ + InterruptTime.QuadPart = g_pfnrtKeQueryInterruptTime(); + else if (g_uRtNtVersion >= RTNT_MAKE_VERSION(3, 50)) + { + /* NT 3.50 and later, also pre-init: Use the user shared data. */ + do + { + InterruptTime.HighPart = ((KUSER_SHARED_DATA volatile *)SharedUserData)->InterruptTime.High1Time; + InterruptTime.LowPart = ((KUSER_SHARED_DATA volatile *)SharedUserData)->InterruptTime.LowPart; + } while (((KUSER_SHARED_DATA volatile *)SharedUserData)->InterruptTime.High2Time != InterruptTime.HighPart); + } + else + { + /* + * There is no KUSER_SHARED_DATA structure on NT 3.1, so we have no choice + * but to use the tick count. We must also avoid the KeQueryTickCount macro + * in the WDK, since NT 3.1 doesn't have the KeTickCount data export either (see above). + */ + static ULONG volatile s_uTimeIncrement = 0; + ULONG uTimeIncrement = s_uTimeIncrement; + if (!uTimeIncrement) + { + uTimeIncrement = KeQueryTimeIncrement(); + Assert(uTimeIncrement != 0); + Assert(uTimeIncrement * 100 / 100 == uTimeIncrement); + uTimeIncrement *= 100; + s_uTimeIncrement = uTimeIncrement; + } + + KeQueryTickCount(&InterruptTime); + return (uint64_t)InterruptTime.QuadPart * uTimeIncrement; + } +# else + else + InterruptTime.QuadPart = KeQueryInterruptTime(); /* Macro on AMD64. */ +# endif + return (uint64_t)InterruptTime.QuadPart * 100; +#else + /* Tick count. Works all the way back to NT 3.1 with #undef above. */ + LARGE_INTEGER Tick; + KeQueryTickCount(&Tick); + return (uint64_t)Tick.QuadPart * KeQueryTimeIncrement() * 100; +#endif +} + + +RTDECL(uint64_t) RTTimeNanoTS(void) +{ + return rtTimeGetSystemNanoTS(); +} + + +RTDECL(uint64_t) RTTimeMilliTS(void) +{ + return rtTimeGetSystemNanoTS() / RT_NS_1MS; +} + + +RTDECL(uint64_t) RTTimeSystemNanoTS(void) +{ + return rtTimeGetSystemNanoTS(); +} + + +RTDECL(uint64_t) RTTimeSystemMilliTS(void) +{ + return rtTimeGetSystemNanoTS() / RT_NS_1MS; +} + + +RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime) +{ + LARGE_INTEGER SystemTime; + if (g_pfnrtKeQuerySystemTimePrecise) + g_pfnrtKeQuerySystemTimePrecise(&SystemTime); + else + KeQuerySystemTime(&SystemTime); /* Macro on AMD64, export on X86. */ + return RTTimeSpecSetNtTime(pTime, SystemTime.QuadPart); +} + -- cgit v1.2.3