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/* $Id: time-r0drv-os2.cpp $ */
/** @file
* IPRT - Time, Ring-0 Driver, OS/2.
*/
/*
* Contributed by knut st. osmundsen.
*
* 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 <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
* --------------------------------------------------------------------
*
* This code is based on:
*
* Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "the-os2-kernel.h"
#include <iprt/time.h>
RTDECL(uint64_t) RTTimeNanoTS(void)
{
/** @remark OS/2 Ring-0: will wrap after 48 days. */
return g_pGIS->msecs * UINT64_C(1000000);
}
RTDECL(uint64_t) RTTimeMilliTS(void)
{
/** @remark OS/2 Ring-0: will wrap after 48 days. */
return g_pGIS->msecs;
}
RTDECL(uint64_t) RTTimeSystemNanoTS(void)
{
/** @remark OS/2 Ring-0: will wrap after 48 days. */
return g_pGIS->msecs * UINT64_C(1000000);
}
RTDECL(uint64_t) RTTimeSystemMilliTS(void)
{
/** @remark OS/2 Ring-0: will wrap after 48 days. */
return g_pGIS->msecs;
}
RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime)
{
/*
* Get the seconds since the unix epoch (local time) and current hundredths.
*/
GINFOSEG volatile *pGIS = (GINFOSEG volatile *)g_pGIS;
UCHAR uchHundredths;
ULONG ulSeconds;
do
{
uchHundredths = pGIS->hundredths;
ulSeconds = pGIS->time;
} while ( uchHundredths == pGIS->hundredths
&& ulSeconds == pGIS->time);
/*
* Combine the two and convert to UCT (later).
*/
uint64_t u64 = ulSeconds * UINT64_C(1000000000) + (uint32_t)uchHundredths * 10000000;
/** @todo convert from local to UCT. */
/** @remark OS/2 Ring-0: Currently returns local time instead of UCT. */
return RTTimeSpecSetNano(pTime, u64);
}
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