/* $Id: SUPLibSem.cpp 62490 2016-07-22 18:41:49Z vboxsync $ */ /** @file * VirtualBox Support Library - Semaphores, ring-3 implementation. */ /* * Copyright (C) 2009-2016 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE 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. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_SUP #include #include #include #include #include "SUPLibInternal.h" #include "SUPDrvIOC.h" /** * Worker that makes a SUP_IOCTL_SEM_OP2 request. * * @returns VBox status code. * @param pSession The session handle. * @param uType The semaphore type. * @param hSem The semaphore handle. * @param uOp The operation. * @param u64Arg The argument if applicable, otherwise 0. */ DECLINLINE(int) supSemOp2(PSUPDRVSESSION pSession, uint32_t uType, uintptr_t hSem, uint32_t uOp, uint64_t u64Arg) { NOREF(pSession); SUPSEMOP2 Req; Req.Hdr.u32Cookie = g_u32Cookie; Req.Hdr.u32SessionCookie = g_u32SessionCookie; Req.Hdr.cbIn = SUP_IOCTL_SEM_OP2_SIZE_IN; Req.Hdr.cbOut = SUP_IOCTL_SEM_OP2_SIZE_OUT; Req.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT; Req.Hdr.rc = VERR_INTERNAL_ERROR; Req.u.In.uType = uType; Req.u.In.hSem = (uint32_t)hSem; AssertReturn(Req.u.In.hSem == hSem, VERR_INVALID_HANDLE); Req.u.In.uOp = uOp; Req.u.In.uReserved = 0; Req.u.In.uArg.u64 = u64Arg; int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_SEM_OP2, &Req, sizeof(Req)); if (RT_SUCCESS(rc)) rc = Req.Hdr.rc; return rc; } /** * Worker that makes a SUP_IOCTL_SEM_OP3 request. * * @returns VBox status code. * @param pSession The session handle. * @param uType The semaphore type. * @param hSem The semaphore handle. * @param uOp The operation. * @param pReq The request structure. The caller should pick * the output data from it himself. */ DECLINLINE(int) supSemOp3(PSUPDRVSESSION pSession, uint32_t uType, uintptr_t hSem, uint32_t uOp, PSUPSEMOP3 pReq) { NOREF(pSession); pReq->Hdr.u32Cookie = g_u32Cookie; pReq->Hdr.u32SessionCookie = g_u32SessionCookie; pReq->Hdr.cbIn = SUP_IOCTL_SEM_OP3_SIZE_IN; pReq->Hdr.cbOut = SUP_IOCTL_SEM_OP3_SIZE_OUT; pReq->Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT; pReq->Hdr.rc = VERR_INTERNAL_ERROR; pReq->u.In.uType = uType; pReq->u.In.hSem = (uint32_t)hSem; AssertReturn(pReq->u.In.hSem == hSem, VERR_INVALID_HANDLE); pReq->u.In.uOp = uOp; pReq->u.In.u32Reserved = 0; pReq->u.In.u64Reserved = 0; int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_SEM_OP3, pReq, sizeof(*pReq)); if (RT_SUCCESS(rc)) rc = pReq->Hdr.rc; return rc; } SUPDECL(int) SUPSemEventCreate(PSUPDRVSESSION pSession, PSUPSEMEVENT phEvent) { AssertPtrReturn(phEvent, VERR_INVALID_POINTER); SUPSEMOP3 Req; int rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)NIL_SUPSEMEVENT, SUPSEMOP3_CREATE, &Req); if (RT_SUCCESS(rc)) *phEvent = (SUPSEMEVENT)(uintptr_t)Req.u.Out.hSem; return rc; } SUPDECL(int) SUPSemEventClose(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent) { if (hEvent == NIL_SUPSEMEVENT) return VINF_SUCCESS; return supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_CLOSE, 0); } SUPDECL(int) SUPSemEventSignal(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_SIGNAL, 0); } SUPDECL(int) SUPSemEventWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint32_t cMillies) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_WAIT_MS_REL, cMillies); } SUPDECL(int) SUPSemEventWaitNsAbsIntr(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint64_t uNsTimeout) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_WAIT_NS_ABS, uNsTimeout); } SUPDECL(int) SUPSemEventWaitNsRelIntr(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent, uint64_t cNsTimeout) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)hEvent, SUPSEMOP2_WAIT_NS_REL, cNsTimeout); } SUPDECL(uint32_t) SUPSemEventGetResolution(PSUPDRVSESSION pSession) { SUPSEMOP3 Req; int rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT, (uintptr_t)NIL_SUPSEMEVENT, SUPSEMOP3_GET_RESOLUTION, &Req); if (RT_SUCCESS(rc)) return Req.u.Out.cNsResolution; return 1000 / 100; } SUPDECL(int) SUPSemEventMultiCreate(PSUPDRVSESSION pSession, PSUPSEMEVENTMULTI phEventMulti) { AssertPtrReturn(phEventMulti, VERR_INVALID_POINTER); SUPSEMOP3 Req; int rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)NIL_SUPSEMEVENTMULTI, SUPSEMOP3_CREATE, &Req); if (RT_SUCCESS(rc)) *phEventMulti = (SUPSEMEVENTMULTI)(uintptr_t)Req.u.Out.hSem; return rc; } SUPDECL(int) SUPSemEventMultiClose(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti) { if (hEventMulti == NIL_SUPSEMEVENTMULTI) return VINF_SUCCESS; return supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_CLOSE, 0); } SUPDECL(int) SUPSemEventMultiSignal(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_SIGNAL, 0); } SUPDECL(int) SUPSemEventMultiReset(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_RESET, 0); } SUPDECL(int) SUPSemEventMultiWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint32_t cMillies) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_WAIT_MS_REL, cMillies); } SUPDECL(int) SUPSemEventMultiWaitNsAbsIntr(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint64_t uNsTimeout) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_WAIT_NS_ABS, uNsTimeout); } SUPDECL(int) SUPSemEventMultiWaitNsRelIntr(PSUPDRVSESSION pSession, SUPSEMEVENTMULTI hEventMulti, uint64_t cNsTimeout) { return supSemOp2(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)hEventMulti, SUPSEMOP2_WAIT_NS_REL, cNsTimeout); } SUPDECL(uint32_t) SUPSemEventMultiGetResolution(PSUPDRVSESSION pSession) { SUPSEMOP3 Req; int rc = supSemOp3(pSession, SUP_SEM_TYPE_EVENT_MULTI, (uintptr_t)NIL_SUPSEMEVENTMULTI, SUPSEMOP3_GET_RESOLUTION, &Req); if (RT_SUCCESS(rc)) return Req.u.Out.cNsResolution; return 1000 / 100; }