[19892] | 1 | /* $Id: SUPLibSem.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VirtualBox Support Library - Semaphores, ring-3 implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2009-2023 Oracle and/or its affiliates.
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[19892] | 8 | *
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[96407] | 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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[19892] | 11 | *
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[96407] | 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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[19892] | 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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[96407] | 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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[19892] | 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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[96407] | 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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[19892] | 35 | */
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| 36 |
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| 37 |
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[57358] | 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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[19892] | 41 | #define LOG_GROUP LOG_GROUP_SUP
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| 42 | #include <VBox/sup.h>
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| 43 |
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[76474] | 44 | #include <iprt/errcore.h>
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[19892] | 45 | #include <VBox/param.h>
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| 46 | #include <iprt/assert.h>
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[92700] | 47 | #include <iprt/semaphore.h>
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| 48 | #include <iprt/time.h>
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[19892] | 49 |
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| 50 | #include "SUPLibInternal.h"
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| 51 | #include "SUPDrvIOC.h"
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| 52 |
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| 53 |
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| 54 | /**
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[33167] | 55 | * Worker that makes a SUP_IOCTL_SEM_OP2 request.
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[19892] | 56 | *
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| 57 | * @returns VBox status code.
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| 58 | * @param pSession The session handle.
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| 59 | * @param uType The semaphore type.
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| 60 | * @param hSem The semaphore handle.
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| 61 | * @param uOp The operation.
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[33167] | 62 | * @param u64Arg The argument if applicable, otherwise 0.
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[19892] | 63 | */
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[33167] | 64 | DECLINLINE(int) supSemOp2(PSUPDRVSESSION pSession, uint32_t uType, uintptr_t hSem, uint32_t uOp, uint64_t u64Arg)
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[19892] | 65 | {
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[39091] | 66 | NOREF(pSession);
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[33167] | 67 | SUPSEMOP2 Req;
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[19892] | 68 | Req.Hdr.u32Cookie = g_u32Cookie;
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| 69 | Req.Hdr.u32SessionCookie = g_u32SessionCookie;
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[33167] | 70 | Req.Hdr.cbIn = SUP_IOCTL_SEM_OP2_SIZE_IN;
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| 71 | Req.Hdr.cbOut = SUP_IOCTL_SEM_OP2_SIZE_OUT;
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[19892] | 72 | Req.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
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| 73 | Req.Hdr.rc = VERR_INTERNAL_ERROR;
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| 74 | Req.u.In.uType = uType;
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| 75 | Req.u.In.hSem = (uint32_t)hSem;
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| 76 | AssertReturn(Req.u.In.hSem == hSem, VERR_INVALID_HANDLE);
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| 77 | Req.u.In.uOp = uOp;
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[33167] | 78 | Req.u.In.uReserved = 0;
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| 79 | Req.u.In.uArg.u64 = u64Arg;
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| 80 | int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_SEM_OP2, &Req, sizeof(Req));
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[19892] | 81 | if (RT_SUCCESS(rc))
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| 82 | rc = Req.Hdr.rc;
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| 83 |
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| 84 | return rc;
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| 85 | }
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| 86 |
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| 87 |
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[33167] | 88 | /**
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| 89 | * Worker that makes a SUP_IOCTL_SEM_OP3 request.
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| 90 | *
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| 91 | * @returns VBox status code.
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| 92 | * @param pSession The session handle.
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| 93 | * @param uType The semaphore type.
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| 94 | * @param hSem The semaphore handle.
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| 95 | * @param uOp The operation.
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| 96 | * @param pReq The request structure. The caller should pick
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| 97 | * the output data from it himself.
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| 98 | */
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| 99 | DECLINLINE(int) supSemOp3(PSUPDRVSESSION pSession, uint32_t uType, uintptr_t hSem, uint32_t uOp, PSUPSEMOP3 pReq)
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| 100 | {
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[39091] | 101 | NOREF(pSession);
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[33167] | 102 | pReq->Hdr.u32Cookie = g_u32Cookie;
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| 103 | pReq->Hdr.u32SessionCookie = g_u32SessionCookie;
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| 104 | pReq->Hdr.cbIn = SUP_IOCTL_SEM_OP3_SIZE_IN;
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| 105 | pReq->Hdr.cbOut = SUP_IOCTL_SEM_OP3_SIZE_OUT;
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| 106 | pReq->Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
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| 107 | pReq->Hdr.rc = VERR_INTERNAL_ERROR;
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| 108 | pReq->u.In.uType = uType;
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| 109 | pReq->u.In.hSem = (uint32_t)hSem;
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| 110 | AssertReturn(pReq->u.In.hSem == hSem, VERR_INVALID_HANDLE);
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| 111 | pReq->u.In.uOp = uOp;
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| 112 | pReq->u.In.u32Reserved = 0;
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| 113 | pReq->u.In.u64Reserved = 0;
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| 114 | int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_SEM_OP3, pReq, sizeof(*pReq));
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| 115 | if (RT_SUCCESS(rc))
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| 116 | rc = pReq->Hdr.rc;
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| 117 |
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| 118 | return rc;
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| 119 | }
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| 120 |
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| 121 |
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[19892] | 122 | SUPDECL(int) SUPSemEventCreate(PSUPDRVSESSION pSession, PSUPSEMEVENT phEvent)
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| 123 | {
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| 124 | AssertPtrReturn(phEvent, VERR_INVALID_POINTER);
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| 125 |
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[92700] | 126 | int rc;
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| 127 | if (!g_supLibData.fDriverless)
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| 128 | {
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| 129 | SUPSEMOP3 Req;
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| 130 | rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)NIL_SUPSEMEVENT, SUPSEMOP3_CREATE, &Req);
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| 131 | if (RT_SUCCESS(rc))
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| 132 | *phEvent = (SUPSEMEVENT)(uintptr_t)Req.u.Out.hSem;
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| 133 | }
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| 134 | else
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| 135 | {
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| 136 | RTSEMEVENT hEvent;
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| 137 | rc = RTSemEventCreate(&hEvent);
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| 138 | if (RT_SUCCESS(rc))
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| 139 | *phEvent = (SUPSEMEVENT)hEvent;
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| 140 | }
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[19892] | 141 | return rc;
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| 142 | }
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| 143 |
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| 144 |
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| 145 | SUPDECL(int) SUPSemEventClose(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent)
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| 146 | {
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| 147 | if (hEvent == NIL_SUPSEMEVENT)
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| 148 | return VINF_SUCCESS;
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[92700] | 149 | int rc;
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| 150 | if (!g_supLibData.fDriverless)
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| 151 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_CLOSE, 0);
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| 152 | else
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| 153 | rc = RTSemEventDestroy((RTSEMEVENT)hEvent);
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| 154 | return rc;
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[19892] | 155 | }
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| 156 |
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| 157 |
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| 158 | SUPDECL(int) SUPSemEventSignal(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent)
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| 159 | {
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[92700] | 160 | int rc;
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| 161 | if (!g_supLibData.fDriverless)
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| 162 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_SIGNAL, 0);
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| 163 | else
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| 164 | rc = RTSemEventSignal((RTSEMEVENT)hEvent);
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| 165 | return rc;
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[19892] | 166 | }
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| 167 |
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| 168 |
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| 169 | SUPDECL(int) SUPSemEventWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint32_t cMillies)
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| 170 | {
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[92700] | 171 | int rc;
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| 172 | if (!g_supLibData.fDriverless)
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| 173 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_WAIT_MS_REL, cMillies);
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| 174 | else
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| 175 | rc = RTSemEventWaitNoResume((RTSEMEVENT)hEvent, cMillies);
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| 176 | return rc;
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[19892] | 177 | }
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| 178 |
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[33167] | 179 |
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| 180 | SUPDECL(int) SUPSemEventWaitNsAbsIntr(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint64_t uNsTimeout)
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| 181 | {
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[92700] | 182 | int rc;
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| 183 | if (!g_supLibData.fDriverless)
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| 184 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_WAIT_NS_ABS, uNsTimeout);
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| 185 | else
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| 186 | {
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| 187 | #if 0
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| 188 | rc = RTSemEventWaitEx((RTSEMEVENT)hEvent,
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| 189 | RTSEMWAIT_FLAGS_ABSOLUTE | RTSEMWAIT_FLAGS_NANOSECS | RTSEMWAIT_FLAGS_NORESUME, uNsTimeout);
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| 190 | #else
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| 191 | uint64_t nsNow = RTTimeNanoTS();
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| 192 | if (nsNow < uNsTimeout)
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| 193 | rc = RTSemEventWaitNoResume((RTSEMEVENT)hEvent, (uNsTimeout - nsNow + RT_NS_1MS - 1) / RT_NS_1MS);
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| 194 | else
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| 195 | rc = VERR_TIMEOUT;
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| 196 | #endif
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| 197 | }
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| 198 | return rc;
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[33167] | 199 | }
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| 200 |
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| 201 |
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| 202 | SUPDECL(int) SUPSemEventWaitNsRelIntr(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint64_t cNsTimeout)
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| 203 | {
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[92700] | 204 | int rc;
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| 205 | if (!g_supLibData.fDriverless)
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| 206 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_WAIT_NS_REL, cNsTimeout);
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| 207 | else
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| 208 | {
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| 209 | #if 0
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| 210 | rc = RTSemEventWaitEx((RTSEMEVENT)hEvent,
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| 211 | RTSEMWAIT_FLAGS_RELATIVE | RTSEMWAIT_FLAGS_NANOSECS | RTSEMWAIT_FLAGS_NORESUME, cNsTimeout);
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| 212 | #else
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| 213 | rc = RTSemEventWaitNoResume((RTSEMEVENT)hEvent, (cNsTimeout + RT_NS_1MS - 1) / RT_NS_1MS);
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| 214 | #endif
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| 215 | }
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| 216 | return rc;
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[33167] | 217 | }
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| 218 |
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| 219 |
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| 220 | SUPDECL(uint32_t) SUPSemEventGetResolution(PSUPDRVSESSION pSession)
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| 221 | {
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[92700] | 222 | if (!g_supLibData.fDriverless)
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| 223 | {
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| 224 | SUPSEMOP3 Req;
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| 225 | int rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)NIL_SUPSEMEVENT, SUPSEMOP3_GET_RESOLUTION, &Req);
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| 226 | if (RT_SUCCESS(rc))
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| 227 | return Req.u.Out.cNsResolution;
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| 228 | return 1000 / 100;
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| 229 | }
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| 230 | #if 0
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| 231 | return RTSemEventGetResolution();
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| 232 | #else
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| 233 | return RT_NS_1MS;
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| 234 | #endif
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[33167] | 235 | }
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| 236 |
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| 237 |
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| 238 |
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| 239 |
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| 240 |
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[19892] | 241 | SUPDECL(int) SUPSemEventMultiCreate(PSUPDRVSESSION pSession, PSUPSEMEVENTMULTI phEventMulti)
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| 242 | {
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| 243 | AssertPtrReturn(phEventMulti, VERR_INVALID_POINTER);
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| 244 |
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[92700] | 245 | int rc;
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| 246 | if (!g_supLibData.fDriverless)
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| 247 | {
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| 248 | SUPSEMOP3 Req;
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| 249 | rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)NIL_SUPSEMEVENTMULTI, SUPSEMOP3_CREATE, &Req);
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| 250 | if (RT_SUCCESS(rc))
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| 251 | *phEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)Req.u.Out.hSem;
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| 252 | }
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| 253 | else
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| 254 | {
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| 255 | RTSEMEVENTMULTI hEventMulti;
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| 256 | rc = RTSemEventMultiCreate(&hEventMulti);
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| 257 | if (RT_SUCCESS(rc))
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| 258 | *phEventMulti = (SUPSEMEVENTMULTI)hEventMulti;
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| 259 | }
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[19892] | 260 | return rc;
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| 261 | }
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| 262 |
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| 263 |
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| 264 | SUPDECL(int) SUPSemEventMultiClose(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti)
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| 265 | {
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| 266 | if (hEventMulti == NIL_SUPSEMEVENTMULTI)
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| 267 | return VINF_SUCCESS;
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[92700] | 268 | int rc;
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| 269 | if (!g_supLibData.fDriverless)
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| 270 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_CLOSE, 0);
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| 271 | else
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| 272 | rc = RTSemEventMultiDestroy((RTSEMEVENTMULTI)hEventMulti);
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| 273 | return rc;
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[19892] | 274 | }
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| 275 |
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| 276 |
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| 277 | SUPDECL(int) SUPSemEventMultiSignal(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti)
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| 278 | {
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[92700] | 279 | int rc;
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| 280 | if (!g_supLibData.fDriverless)
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| 281 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_SIGNAL, 0);
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| 282 | else
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| 283 | rc = RTSemEventMultiSignal((RTSEMEVENTMULTI)hEventMulti);
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| 284 | return rc;
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[19892] | 285 | }
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| 286 |
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| 287 |
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| 288 | SUPDECL(int) SUPSemEventMultiReset(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti)
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| 289 | {
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[92700] | 290 | int rc;
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| 291 | if (!g_supLibData.fDriverless)
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| 292 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_RESET, 0);
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| 293 | else
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| 294 | rc = RTSemEventMultiReset((RTSEMEVENTMULTI)hEventMulti);
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| 295 | return rc;
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[19892] | 296 | }
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| 297 |
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| 298 |
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| 299 | SUPDECL(int) SUPSemEventMultiWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint32_t cMillies)
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| 300 | {
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[92700] | 301 | int rc;
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| 302 | if (!g_supLibData.fDriverless)
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[92704] | 303 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_WAIT_MS_REL, cMillies);
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[92700] | 304 | else
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| 305 | rc = RTSemEventMultiWaitNoResume((RTSEMEVENTMULTI)hEventMulti, cMillies);
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| 306 | return rc;
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[19892] | 307 | }
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| 308 |
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[33167] | 309 |
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| 310 | SUPDECL(int) SUPSemEventMultiWaitNsAbsIntr(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint64_t uNsTimeout)
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| 311 | {
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[92700] | 312 | int rc;
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| 313 | if (!g_supLibData.fDriverless)
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| 314 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_WAIT_NS_ABS, uNsTimeout);
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| 315 | else
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| 316 | {
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| 317 | #if 0
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| 318 | rc = RTSemEventMultiWaitEx((RTSEMEVENTMULTI)hEventMulti,
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| 319 | RTSEMWAIT_FLAGS_ABSOLUTE | RTSEMWAIT_FLAGS_NANOSECS | RTSEMWAIT_FLAGS_NORESUME, uNsTimeout);
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| 320 | #else
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| 321 | uint64_t nsNow = RTTimeNanoTS();
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| 322 | if (nsNow < uNsTimeout)
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| 323 | rc = RTSemEventMultiWaitNoResume((RTSEMEVENTMULTI)hEventMulti, (uNsTimeout - nsNow + RT_NS_1MS - 1) / RT_NS_1MS);
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| 324 | else
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| 325 | rc = VERR_TIMEOUT;
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| 326 | #endif
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| 327 | }
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| 328 | return rc;
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[33167] | 329 | }
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| 330 |
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| 331 |
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| 332 | SUPDECL(int) SUPSemEventMultiWaitNsRelIntr(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint64_t cNsTimeout)
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| 333 | {
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[92700] | 334 | int rc;
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| 335 | if (!g_supLibData.fDriverless)
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| 336 | rc = supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_WAIT_NS_REL, cNsTimeout);
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| 337 | else
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| 338 | {
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| 339 | #if 0
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| 340 | rc = RTSemEventMultiWaitEx((RTSEMEVENTMULTI)hEventMulti,
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| 341 | RTSEMWAIT_FLAGS_RELATIVE | RTSEMWAIT_FLAGS_NANOSECS | RTSEMWAIT_FLAGS_NORESUME, cNsTimeout);
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| 342 | #else
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| 343 | rc = RTSemEventMultiWaitNoResume((RTSEMEVENTMULTI)hEventMulti, (cNsTimeout + RT_NS_1MS - 1) / RT_NS_1MS);
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| 344 | #endif
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| 345 | }
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| 346 | return rc;
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[33167] | 347 | }
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| 348 |
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| 349 |
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| 350 | SUPDECL(uint32_t) SUPSemEventMultiGetResolution(PSUPDRVSESSION pSession)
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| 351 | {
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[92700] | 352 | if (!g_supLibData.fDriverless)
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| 353 | {
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| 354 | SUPSEMOP3 Req;
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| 355 | int rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)NIL_SUPSEMEVENTMULTI, SUPSEMOP3_GET_RESOLUTION, &Req);
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| 356 | if (RT_SUCCESS(rc))
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| 357 | return Req.u.Out.cNsResolution;
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| 358 | return 1000 / 100;
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| 359 | }
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| 360 | #if 0
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| 361 | return RTSemEventMultiGetResolution();
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| 362 | #else
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| 363 | return RT_NS_1MS;
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| 364 | #endif
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[33167] | 365 | }
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| 366 |
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