r3/win/semmutex-win.cpp

	semmutex-win.cpp revision 47d9037afecc80d7a107338f0adfda45c1224fed
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync/* $Id$ */
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync/** @file
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * IPRT - Mutex Semaphores, Windows.
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync */
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync/*
aae8a6a38fd27661046ab1d06cb2cb5c096c40edvboxsync * Copyright (C) 2006-2009 Sun Microsystems, Inc.
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync *
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * available from http://www.virtualbox.org. This file is free software;
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * you can redistribute it and/or modify it under the terms of the GNU
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * General Public License (GPL) as published by the Free Software
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync *
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * The contents of this file may alternatively be used under the terms
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * of the Common Development and Distribution License Version 1.0
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * VirtualBox OSE distribution, in which case the provisions of the
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * CDDL are applicable instead of those of the GPL.
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync *
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync * You may elect to license modified versions of this file under the
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * terms and conditions of either the GPL or the CDDL or both.
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync *
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync * additional information or have any questions.
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync */
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync/*******************************************************************************
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync*   Header Files                                                               *
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync*******************************************************************************/
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#define LOG_GROUP RTLOGGROUP_SEMAPHORE
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <Windows.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <iprt/semaphore.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include "internal/iprt.h"
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#include <iprt/asm.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <iprt/assert.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <iprt/err.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <iprt/lockvalidator.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <iprt/mem.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include <iprt/thread.h>
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include "internal/magics.h"
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#include "internal/strict.h"
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync/*******************************************************************************
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync*   Defined Constants And Macros                                               *
1759f65b60e18f669f6d569aebd4fb7217ab414fvboxsync*******************************************************************************/
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync/** Posix internal representation of a Mutex semaphore. */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsyncstruct RTSEMMUTEXINTERNAL
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync{
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    /** Magic value (RTSEMMUTEX_MAGIC). */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    uint32_t                u32Magic;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    /** Recursion count. */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    uint32_t volatile       cRecursions;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    /** The owner thread. */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    RTNATIVETHREAD volatile hNativeOwner;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    /** The mutex handle. */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    HANDLE                  hMtx;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#ifdef RTSEMMUTEX_STRICT
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    /** Lock validator record associated with this mutex. */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    RTLOCKVALRECEXCL        ValidatorRec;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#endif
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync};
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync/* Undefine debug mappings. */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#undef RTSemMutexRequest
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#undef RTSemMutexRequestNoResume
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsyncRTDECL(int)  RTSemMutexCreate(PRTSEMMUTEX pMutexSem)
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync{
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    int rc;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    /*
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync     * Create the semaphore.
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync     */
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    HANDLE hMtx = CreateMutex(NULL, FALSE, NULL);
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    if (hMtx)
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    {
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync        RTSEMMUTEXINTERNAL *pThis = (RTSEMMUTEXINTERNAL *)RTMemAlloc(sizeof(*pThis));
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync        if (pThis)
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync        {
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync            pThis->u32Magic     = RTSEMMUTEX_MAGIC;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync            pThis->hMtx         = hMtx;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync            pThis->hNativeOwner = NIL_RTNATIVETHREAD;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync            pThis->cRecursions  = 0;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync#ifdef RTSEMMUTEX_STRICT
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync            RTLockValidatorRecExclInit(&pThis->ValidatorRec, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, pThis,
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync                                       true /*fEnabled*/, "RTSemMutex");
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync#endif
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync            *pMutexSem = pThis;
1759f65b60e18f669f6d569aebd4fb7217ab414fvboxsync            return VINF_SUCCESS;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync        }
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync        rc = VERR_NO_MEMORY;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    }
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    else
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync        rc = RTErrConvertFromWin32(GetLastError());
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync    return rc;
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync}
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync
2afbe132eb7931e0125141eabe3a48e08f1ffab5vboxsyncRTDECL(int)  RTSemMutexDestroy(RTSEMMUTEX MutexSem)
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync{
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync    /*
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync     * Validate.
f6dd48677b626c383d1a91cba7688abb0945af7dvboxsync     */
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    RTSEMMUTEXINTERNAL *pThis = MutexSem;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    if (pThis == NIL_RTSEMMUTEX)
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync        return VINF_SUCCESS;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    /*
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     * Close semaphore handle.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, RTSEMMUTEX_MAGIC_DEAD, RTSEMMUTEX_MAGIC), VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    HANDLE hMtx = pThis->hMtx;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    ASMAtomicWritePtr((void * volatile *)&pThis->hMtx, (void *)INVALID_HANDLE_VALUE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    int rc = VINF_SUCCESS;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    if (!CloseHandle(hMtx))
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        rc = RTErrConvertFromWin32(GetLastError());
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        AssertMsgFailed(("%p rc=%d lasterr=%d\n", pThis->hMtx, rc, GetLastError()));
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    }
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#ifdef RTSEMMUTEX_STRICT
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTLockValidatorRecExclDelete(&pThis->ValidatorRec);
2afbe132eb7931e0125141eabe3a48e08f1ffab5vboxsync#endif
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTMemFree(pThis);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    return rc;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync}
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync/**
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync * Internal worker for RTSemMutexRequestNoResume and it's debug companion.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync *
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync * @returns Same as RTSEmMutexRequestNoResume
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync * @param   MutexSem            The mutex handle.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync * @param   cMillies            The number of milliseconds to wait.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync * @param   pSrcPos             The source position of the caller.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsyncDECL_FORCE_INLINE(int) rtSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies, PCRTLOCKVALSRCPOS pSrcPos)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync{
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    /*
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     * Validate.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTSEMMUTEXINTERNAL *pThis = MutexSem;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    /*
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     * Check for recursive entry.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTNATIVETHREAD hNativeSelf = RTThreadNativeSelf();
2afbe132eb7931e0125141eabe3a48e08f1ffab5vboxsync    RTNATIVETHREAD hNativeOwner;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    if (hNativeOwner == hNativeSelf)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#ifdef RTSEMMUTEX_STRICT
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        int rc9 = RTLockValidatorRecExclRecursion(&pThis->ValidatorRec, pSrcPos);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        if (RT_FAILURE(rc9))
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            return rc9;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#endif
63a23b6d96aca4c8545d3c3e89cc454af7ba3da6vboxsync        ASMAtomicIncU32(&pThis->cRecursions);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        return VINF_SUCCESS;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    }
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    /*
2afbe132eb7931e0125141eabe3a48e08f1ffab5vboxsync     * Lock mutex semaphore.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTTHREAD        hThreadSelf = NIL_RTTHREAD;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    if (cMillies > 0)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#ifdef RTSEMMUTEX_STRICT
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        hThreadSelf = RTThreadSelfAutoAdopt();
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        int rc9 = RTLockValidatorRecExclCheckOrderAndBlocking(&pThis->ValidatorRec, hThreadSelf, pSrcPos, true,
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync                                                              cMillies, RTTHREADSTATE_MUTEX, true);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        if (RT_FAILURE(rc9))
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            return rc9;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#else
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        hThreadSelf = RTThreadSelf();
90ecd36a6e45ec33526541f68cf89c21ec578f83vboxsync        RTThreadBlocking(hThreadSelf, RTTHREADSTATE_MUTEX, true);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#endif
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    }
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    DWORD rc = WaitForSingleObjectEx(pThis->hMtx,
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync                                     cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies,
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync                                     TRUE /*fAlertable*/);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTThreadUnblocked(hThreadSelf, RTTHREADSTATE_MUTEX);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    switch (rc)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        case WAIT_OBJECT_0:
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#ifdef RTSEMMUTEX_STRICT
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            RTLockValidatorRecExclSetOwner(&pThis->ValidatorRec, hThreadSelf, pSrcPos, true);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#endif
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            ASMAtomicWriteHandle(&pThis->hNativeOwner, hNativeSelf);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            ASMAtomicWriteU32(&pThis->cRecursions, 1);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            return VINF_SUCCESS;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        case WAIT_TIMEOUT:          return VERR_TIMEOUT;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        case WAIT_IO_COMPLETION:    return VERR_INTERRUPTED;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        case WAIT_ABANDONED:        return VERR_SEM_OWNER_DIED;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        default:
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            AssertMsgFailed(("%u\n",  rc));
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        case WAIT_FAILED:
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            int rc2 = RTErrConvertFromWin32(GetLastError());
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            AssertMsgFailed(("Wait on MutexSem %p failed, rc=%d lasterr=%d\n", MutexSem, rc, GetLastError()));
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            if (rc2 != VINF_SUCCESS)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync                return rc2;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync            return VERR_INTERNAL_ERROR;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        }
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    }
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync}
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsyncRTDECL(int) RTSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync{
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#ifndef RTSEMMUTEX_STRICT
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    return rtSemMutexRequestNoResume(MutexSem, cMillies, NULL);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#else
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API();
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    return rtSemMutexRequestNoResume(MutexSem, cMillies, &SrcPos);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#endif
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync}
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsyncRTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX MutexSem, unsigned cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync{
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    return rtSemMutexRequestNoResume(MutexSem, cMillies, &SrcPos);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync}
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsyncRTDECL(int) RTSemMutexRelease(RTSEMMUTEX MutexSem)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync{
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    /*
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     * Validate.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTSEMMUTEXINTERNAL *pThis = MutexSem;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync
2afbe132eb7931e0125141eabe3a48e08f1ffab5vboxsync    /*
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     * Check ownership and recursions.
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync     */
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTNATIVETHREAD hNativeSelf = RTThreadNativeSelf();
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    RTNATIVETHREAD hNativeOwner;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    if (RT_UNLIKELY(hNativeOwner != hNativeSelf))
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        AssertMsgFailed(("Not owner of mutex %p!! hNativeSelf=%RTntrd Owner=%RTntrd cRecursions=%d\n",
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync                         pThis, hNativeSelf, hNativeOwner, pThis->cRecursions));
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        return VERR_NOT_OWNER;
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    }
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    if (pThis->cRecursions > 1)
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    {
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync#ifdef RTSEMMUTEX_STRICT
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync        int rc9 = RTLockValidatorRecExclUnwind(&pThis->ValidatorRec);
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync        if (RT_FAILURE(rc9))
d2c6b2e8826a5ef34170fef0c72c3fc7c5c1b46avboxsync            return rc9;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync#endif
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync        ASMAtomicDecU32(&pThis->cRecursions);
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync        return VINF_SUCCESS;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    }
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    /*
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync     * Unlock mutex semaphore.
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync     */
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync#ifdef RTSEMMUTEX_STRICT
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    int rc9 = RTLockValidatorRecExclReleaseOwner(&pThis->ValidatorRec, false);
1759f65b60e18f669f6d569aebd4fb7217ab414fvboxsync    if (RT_FAILURE(rc9))
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync        return rc9;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync#endif
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync    ASMAtomicWriteU32(&pThis->cRecursions, 0);
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync    ASMAtomicWriteHandle(&pThis->hNativeOwner, NIL_RTNATIVETHREAD);
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    if (ReleaseMutex(pThis->hMtx))
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync        return VINF_SUCCESS;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
8c97c335e49609421316d92d2e0aff3e7f8eed04vboxsync    int rc = RTErrConvertFromWin32(GetLastError());
6ca8a1595bddf29de7894958ae74c255eb2693bevboxsync    AssertMsgFailed(("%p/%p, rc=%Rrc lasterr=%d\n", pThis, pThis->hMtx, rc, GetLastError()));
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    return rc;
d2c6b2e8826a5ef34170fef0c72c3fc7c5c1b46avboxsync}
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsyncRTDECL(bool) RTSemMutexIsOwned(RTSEMMUTEX hMutex)
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync{
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    /*
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync     * Validate.
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync     */
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    RTSEMMUTEXINTERNAL *pThis = hMutex;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    AssertPtrReturn(pThis, false);
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, false);
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    RTNATIVETHREAD hNativeOwner;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync    return hNativeOwner != NIL_RTNATIVETHREAD;
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync}
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync
90eb38579e280c6a0e466177b2a9632ab9eb8c44vboxsync