| 1 | /* $Id: time-r0drv-os2.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Time, Ring-0 Driver, OS/2.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Contributed by knut st. osmundsen.
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| 8 | *
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| 9 | * Copyright (C) 2007-2024 Oracle and/or its affiliates.
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| 10 | *
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| 11 | * This file is part of VirtualBox base platform packages, as
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| 12 | * available from https://www.virtualbox.org.
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| 13 | *
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| 14 | * This program is free software; you can redistribute it and/or
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| 15 | * modify it under the terms of the GNU General Public License
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| 16 | * as published by the Free Software Foundation, in version 3 of the
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| 17 | * License.
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| 18 | *
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| 19 | * This program is distributed in the hope that it will be useful, but
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| 20 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 22 | * General Public License for more details.
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| 23 | *
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| 24 | * You should have received a copy of the GNU General Public License
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| 25 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 26 | *
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| 27 | * The contents of this file may alternatively be used under the terms
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| 28 | * of the Common Development and Distribution License Version 1.0
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| 29 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 30 | * in the VirtualBox distribution, in which case the provisions of the
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| 31 | * CDDL are applicable instead of those of the GPL.
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| 32 | *
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| 33 | * You may elect to license modified versions of this file under the
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| 34 | * terms and conditions of either the GPL or the CDDL or both.
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| 35 | *
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| 36 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 37 | * --------------------------------------------------------------------
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| 38 | *
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| 39 | * This code is based on:
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| 40 | *
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| 41 | * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
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| 42 | *
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| 43 | * Permission is hereby granted, free of charge, to any person
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| 44 | * obtaining a copy of this software and associated documentation
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| 45 | * files (the "Software"), to deal in the Software without
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| 46 | * restriction, including without limitation the rights to use,
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| 47 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 48 | * copies of the Software, and to permit persons to whom the
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| 49 | * Software is furnished to do so, subject to the following
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| 50 | * conditions:
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| 51 | *
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| 52 | * The above copyright notice and this permission notice shall be
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| 53 | * included in all copies or substantial portions of the Software.
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| 54 | *
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| 55 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 56 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 57 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 58 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 59 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 60 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 61 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 62 | * OTHER DEALINGS IN THE SOFTWARE.
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| 63 | */
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| 64 |
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| 65 |
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| 66 | /*********************************************************************************************************************************
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| 67 | * Header Files *
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| 68 | *********************************************************************************************************************************/
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| 69 | #include "the-os2-kernel.h"
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| 70 |
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| 71 | #include <iprt/time.h>
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| 72 |
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| 73 |
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| 74 | RTDECL(uint64_t) RTTimeNanoTS(void)
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| 75 | {
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| 76 | /** @remark OS/2 Ring-0: will wrap after 48 days. */
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| 77 | return g_pGIS->msecs * UINT64_C(1000000);
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| 78 | }
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| 79 |
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| 80 |
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| 81 | RTDECL(uint64_t) RTTimeMilliTS(void)
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| 82 | {
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| 83 | /** @remark OS/2 Ring-0: will wrap after 48 days. */
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| 84 | return g_pGIS->msecs;
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| 85 | }
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| 86 |
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| 87 |
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| 88 | RTDECL(uint64_t) RTTimeSystemNanoTS(void)
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| 89 | {
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| 90 | /** @remark OS/2 Ring-0: will wrap after 48 days. */
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| 91 | return g_pGIS->msecs * UINT64_C(1000000);
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| 92 | }
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| 93 |
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| 94 |
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| 95 | RTDECL(uint64_t) RTTimeSystemMilliTS(void)
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| 96 | {
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| 97 | /** @remark OS/2 Ring-0: will wrap after 48 days. */
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| 98 | return g_pGIS->msecs;
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| 99 | }
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| 100 |
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| 101 |
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| 102 | RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime)
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| 103 | {
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| 104 | /*
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| 105 | * Get the seconds since the unix epoch (local time) and current hundredths.
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| 106 | */
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| 107 | GINFOSEG volatile *pGIS = (GINFOSEG volatile *)g_pGIS;
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| 108 | UCHAR uchHundredths;
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| 109 | ULONG ulSeconds;
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| 110 | do
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| 111 | {
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| 112 | uchHundredths = pGIS->hundredths;
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| 113 | ulSeconds = pGIS->time;
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| 114 | } while ( uchHundredths == pGIS->hundredths
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| 115 | && ulSeconds == pGIS->time);
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| 116 |
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| 117 | /*
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| 118 | * Combine the two and convert to UCT (later).
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| 119 | */
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| 120 | uint64_t u64 = ulSeconds * UINT64_C(1000000000) + (uint32_t)uchHundredths * 10000000;
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| 121 | /** @todo convert from local to UCT. */
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| 122 |
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| 123 | /** @remark OS/2 Ring-0: Currently returns local time instead of UCT. */
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| 124 | return RTTimeSpecSetNano(pTime, u64);
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| 125 | }
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| 126 |
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