diff options
Diffstat (limited to 'src/VBox/HostDrivers/Support/SUPLibSem.cpp')
| -rw-r--r-- | src/VBox/HostDrivers/Support/SUPLibSem.cpp | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/Support/SUPLibSem.cpp b/src/VBox/HostDrivers/Support/SUPLibSem.cpp new file mode 100644 index 00000000..de764c34 --- /dev/null +++ b/src/VBox/HostDrivers/Support/SUPLibSem.cpp @@ -0,0 +1,225 @@ +/* $Id: SUPLibSem.cpp $ */ +/** @file + * VirtualBox Support Library - Semaphores, ring-3 implementation. + */ + +/* + * Copyright (C) 2009-2019 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 <VBox/sup.h> + +#include <iprt/errcore.h> +#include <VBox/param.h> +#include <iprt/assert.h> + +#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; +} + |