semmutex-win.cpp revision 4b0369e0c9bcae37f2801e0f7b92509bbbaf4bec
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync/* $Id$ */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync/** @file
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * IPRT - Mutex Semaphores, Windows.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync/*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Copyright (C) 2006-2009 Sun Microsystems, Inc.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync *
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * available from http://www.virtualbox.org. This file is free software;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * you can redistribute it and/or modify it under the terms of the GNU
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * General Public License (GPL) as published by the Free Software
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync *
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * The contents of this file may alternatively be used under the terms
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * of the Common Development and Distribution License Version 1.0
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * VirtualBox OSE distribution, in which case the provisions of the
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * CDDL are applicable instead of those of the GPL.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync *
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * You may elect to license modified versions of this file under the
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * terms and conditions of either the GPL or the CDDL or both.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync *
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * additional information or have any questions.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync/*******************************************************************************
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync* Header Files *
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync*******************************************************************************/
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#define LOG_GROUP RTLOGGROUP_SEMAPHORE
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#include <Windows.h>
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#include <iprt/semaphore.h>
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#include "internal/iprt.h"
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#include <iprt/assert.h>
f847566a82fc74d59381a4a27553dbbf8c8061f4vboxsync#include <iprt/asm.h>
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#include <iprt/err.h>
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#include <iprt/lockvalidator.h>
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#include <iprt/mem.h>
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#include <iprt/thread.h>
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#include "internal/magics.h"
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#include "internal/strict.h"
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync/*******************************************************************************
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync* Defined Constants And Macros *
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync*******************************************************************************/
0d282f291fba8c5597b0cc338058a7976938975cvboxsync/** Posix internal representation of a Mutex semaphore. */
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncstruct RTSEMMUTEXINTERNAL
0d282f291fba8c5597b0cc338058a7976938975cvboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /** Magic value (RTSEMMUTEX_MAGIC). */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync uint32_t u32Magic;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync /** The mutex handle. */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync HANDLE hMtx;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync#ifdef RTSEMMUTEX_STRICT
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync /** Lock validator record associated with this mutex. */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTLOCKVALIDATORREC ValidatorRec;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync};
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync/* Undefine debug mappings. */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#undef RTSemMutexRequest
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#undef RTSemMutexRequestNoResume
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsyncRTDECL(int) RTSemMutexCreate(PRTSEMMUTEX pMutexSem)
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync{
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync int rc;
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Create the semaphore.
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync */
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync HANDLE hMtx = CreateMutex(NULL, FALSE, NULL);
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync if (hMtx)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync {
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync RTSEMMUTEXINTERNAL *pThis = (RTSEMMUTEXINTERNAL *)RTMemAlloc(sizeof(*pThis));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (pThis)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync {
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync pThis->u32Magic = RTSEMMUTEX_MAGIC;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync pThis->hMtx = hMtx;
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync#ifdef RTSEMMUTEX_STRICT
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTLockValidatorInit(&pThis->ValidatorRec, NIL_RTLOCKVALIDATORCLASS, RTLOCKVALIDATOR_SUB_CLASS_NONE, NULL, pThis);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync *pMutexSem = pThis;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync rc = VERR_NO_MEMORY;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync }
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync else
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync rc = RTErrConvertFromWin32(GetLastError());
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc;
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync}
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsyncRTDECL(int) RTSemMutexDestroy(RTSEMMUTEX MutexSem)
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync * Validate.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTSEMMUTEXINTERNAL *pThis = MutexSem;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync if (pThis == NIL_RTSEMMUTEX)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Close semaphore handle.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, RTSEMMUTEX_MAGIC_DEAD, RTSEMMUTEX_MAGIC), VERR_INVALID_HANDLE);
82ded957f5370e7d4b8050fe3ac2117ddebac02avboxsync HANDLE hMtx = pThis->hMtx;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync ASMAtomicWritePtr((void * volatile *)&pThis->hMtx, (void *)INVALID_HANDLE_VALUE);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync int rc = VINF_SUCCESS;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync if (!CloseHandle(hMtx))
82ded957f5370e7d4b8050fe3ac2117ddebac02avboxsync {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync rc = RTErrConvertFromWin32(GetLastError());
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertMsgFailed(("%p rc=%d lasterr=%d\n", pThis->hMtx, rc, GetLastError()));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTLockValidatorDelete(&pThis->ValidatorRec);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTMemFree(pThis);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync}
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync/**
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Internal worker for RTSemMutexRequestNoResume and it's debug companion.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync *
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @returns Same as RTSEmMutexRequestNoResume
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @param MutexSem The mutex handle.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @param cMillies The number of milliseconds to wait.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @param pSrcPos The source position of the caller.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
eaae6c3ce81916ccc4e74af4b55972ba956cf5c8vboxsyncDECL_FORCE_INLINE(int) rtSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies, PCRTLOCKVALIDATORSRCPOS pSrcPos)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Validate.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTSEMMUTEXINTERNAL *pThis = MutexSem;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync#ifdef RTSEMMUTEX_STRICT
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync RTTHREAD hThreadSelf = RTThreadSelfAutoAdopt();
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync RTLockValidatorCheckOrder(&pThis->ValidatorRec, hThreadSelf, pSrcPos);
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync#else
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync RTTHREAD hThreadSelf = RTThreadSelf();
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync#endif
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync /*
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync * Lock mutex semaphore.
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync */
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync if (cMillies > 0)
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync {
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync#ifdef RTSEMMUTEX_STRICT
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync int rc9 = RTLockValidatorCheckBlocking(&pThis->ValidatorRec, hThreadSelf,
549e45e906cbe16cbeb2704c3a7354aa8ab022b4vboxsync RTTHREADSTATE_MUTEX, true, pSrcPos);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (RT_FAILURE(rc9))
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc9;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTThreadBlocking(hThreadSelf, RTTHREADSTATE_MUTEX);
82ded957f5370e7d4b8050fe3ac2117ddebac02avboxsync }
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync int rc = WaitForSingleObjectEx(pThis->hMtx,
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies,
0d282f291fba8c5597b0cc338058a7976938975cvboxsync TRUE /*bAlertable*/);
b79e4344bf4eb8033fd06d560cd864192728bd0bvboxsync RTThreadUnblocked(hThreadSelf, RTTHREADSTATE_MUTEX);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync switch (rc)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync case WAIT_OBJECT_0:
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
82ded957f5370e7d4b8050fe3ac2117ddebac02avboxsync RTLockValidatorSetOwner(&pThis->ValidatorRec, hThreadSelf, pSrcPos);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync case WAIT_TIMEOUT: return VERR_TIMEOUT;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync default:
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync {
f847566a82fc74d59381a4a27553dbbf8c8061f4vboxsync AssertMsgFailed(("Wait on MutexSem %p failed, rc=%d lasterr=%d\n", MutexSem, rc, GetLastError()));
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync int rc2 = RTErrConvertFromWin32(GetLastError());
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync if (rc2 != 0)
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync return rc2;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync return VERR_INTERNAL_ERROR;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync }
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync }
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync}
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsyncRTDECL(int) RTSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#ifndef RTSEMMUTEX_STRICT
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync return rtSemMutexRequestNoResume(MutexSem, cMillies, NULL);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#else
08870164da59f90379b1ea9b5a2476296c362217vboxsync RTLOCKVALIDATORSRCPOS SrcPos = RTLOCKVALIDATORSRCPOS_INIT_NORMAL_API();
08870164da59f90379b1ea9b5a2476296c362217vboxsync return rtSemMutexRequestNoResume(MutexSem, cMillies, &SrcPos);
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync#endif
0fcf82b2591711fa8980e8f5d9cad1b8f222d6d7vboxsync}
2805b95732a8d26015a397626b96049a6e6573e7vboxsync
08870164da59f90379b1ea9b5a2476296c362217vboxsync
08870164da59f90379b1ea9b5a2476296c362217vboxsyncRTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX MutexSem, unsigned cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync{
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync RTLOCKVALIDATORSRCPOS SrcPos = RTLOCKVALIDATORSRCPOS_INIT_DEBUG_API();
0fcf82b2591711fa8980e8f5d9cad1b8f222d6d7vboxsync return rtSemMutexRequestNoResume(MutexSem, cMillies, &SrcPos);
c364b6c44a252ab65b514fa8f9a665cc5e33a1cevboxsync}
08870164da59f90379b1ea9b5a2476296c362217vboxsync
7f22d63b8c416918f318efcd1b28b883d934e84dvboxsync
7f22d63b8c416918f318efcd1b28b883d934e84dvboxsyncRTDECL(int) RTSemMutexRelease(RTSEMMUTEX MutexSem)
7f22d63b8c416918f318efcd1b28b883d934e84dvboxsync{
08870164da59f90379b1ea9b5a2476296c362217vboxsync /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Validate.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTSEMMUTEXINTERNAL *pThis = MutexSem;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync /*
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync * Unlock mutex semaphore.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#ifdef RTSEMMUTEX_STRICT
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync if ( pThis->ValidatorRec.hThread != NIL_RTTHREAD
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync && pThis->ValidatorRec.hThread == RTThreadSelf())
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTLockValidatorUnsetOwner(&pThis->ValidatorRec);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync else
7f22d63b8c416918f318efcd1b28b883d934e84dvboxsync AssertMsgFailed(("%p hThread=%RTthrd\n", pThis, pThis->ValidatorRec.hThread));
7f22d63b8c416918f318efcd1b28b883d934e84dvboxsync#endif
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync if (ReleaseMutex(pThis->hMtx))
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return VINF_SUCCESS;
82ded957f5370e7d4b8050fe3ac2117ddebac02avboxsync int rc = RTErrConvertFromWin32(GetLastError());
7f22d63b8c416918f318efcd1b28b883d934e84dvboxsync AssertMsgFailed(("%p/%p, rc=%Rrc lasterr=%d\n", pThis, pThis->hMtx, rc, GetLastError()));
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return rc;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync