r3/win/semmutex-win.cpp

	semmutex-win.cpp revision 0fcf82b2591711fa8980e8f5d9cad1b8f222d6d7
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/asm.h>
f847566a82fc74d59381a4a27553dbbf8c8061f4vboxsync#include <iprt/assert.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    /** Recursion count. */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    uint32_t volatile       cRecursions;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    /** The owner thread. */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTNATIVETHREAD volatile hNativeOwner;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    /** The mutex handle. */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    HANDLE                  hMtx;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    /** Lock validator record associated with this mutex. */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTLOCKVALRECEXCL        ValidatorRec;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync};
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync/* Undefine debug mappings. */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#undef RTSemMutexRequest
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#undef RTSemMutexRequestNoResume
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsyncRTDECL(int)  RTSemMutexCreate(PRTSEMMUTEX pMutexSem)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    int rc;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     * Create the semaphore.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    HANDLE hMtx = CreateMutex(NULL, FALSE, NULL);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    if (hMtx)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        RTSEMMUTEXINTERNAL *pThis = (RTSEMMUTEXINTERNAL *)RTMemAlloc(sizeof(*pThis));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        if (pThis)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        {
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            pThis->u32Magic     = RTSEMMUTEX_MAGIC;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            pThis->hMtx         = hMtx;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            pThis->hNativeOwner = NIL_RTNATIVETHREAD;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            pThis->cRecursions  = 0;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
eaae6c3ce81916ccc4e74af4b55972ba956cf5c8vboxsync            RTLockValidatorRecExclInit(&pThis->ValidatorRec,  NIL_RTLOCKVALIDATORCLASS, RTLOCKVALIDATOR_SUB_CLASS_NONE, "RTSemMutex", pThis);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync            *pMutexSem = pThis;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync            return VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        }
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        rc = VERR_NO_MEMORY;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    else
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        rc = RTErrConvertFromWin32(GetLastError());
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    return rc;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsyncRTDECL(int)  RTSemMutexDestroy(RTSEMMUTEX MutexSem)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     * Validate.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    RTSEMMUTEXINTERNAL *pThis = MutexSem;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    if (pThis == NIL_RTSEMMUTEX)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        return VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     * Close semaphore handle.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, RTSEMMUTEX_MAGIC_DEAD, RTSEMMUTEX_MAGIC), VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    HANDLE hMtx = pThis->hMtx;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    ASMAtomicWritePtr((void * volatile *)&pThis->hMtx, (void *)INVALID_HANDLE_VALUE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    int rc = VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    if (!CloseHandle(hMtx))
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        rc = RTErrConvertFromWin32(GetLastError());
0d282f291fba8c5597b0cc338058a7976938975cvboxsync        AssertMsgFailed(("%p rc=%d lasterr=%d\n", pThis->hMtx, rc, GetLastError()));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
eaae6c3ce81916ccc4e74af4b55972ba956cf5c8vboxsync    RTLockValidatorRecExclDelete(&pThis->ValidatorRec);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    RTMemFree(pThis);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    return rc;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync/**
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Internal worker for RTSemMutexRequestNoResume and it's debug companion.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync *
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @returns Same as RTSEmMutexRequestNoResume
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync * @param   MutexSem            The mutex handle.
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync * @param   cMillies            The number of milliseconds to wait.
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync * @param   pSrcPos             The source position of the caller.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
eaae6c3ce81916ccc4e74af4b55972ba956cf5c8vboxsyncDECL_FORCE_INLINE(int) rtSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies, PCRTLOCKVALSRCPOS pSrcPos)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     * Validate.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    RTSEMMUTEXINTERNAL *pThis = MutexSem;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    /*
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync     * Check for recursive entry.
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync     */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTNATIVETHREAD hNativeSelf = RTThreadNativeSelf();
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTNATIVETHREAD hNativeOwner;
f847566a82fc74d59381a4a27553dbbf8c8061f4vboxsync    ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    if (hNativeOwner == hNativeSelf)
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    {
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync#ifdef RTSEMMUTEX_STRICT
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        int rc9 = RTLockValidatorRecExclRecursion(&pThis->ValidatorRec, pSrcPos);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        if (RT_FAILURE(rc9))
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            return rc9;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync#endif
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        ASMAtomicIncU32(&pThis->cRecursions);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        return VINF_SUCCESS;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    }
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     * Lock mutex semaphore.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTTHREAD        hThreadSelf = NIL_RTTHREAD;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    if (cMillies > 0)
08870164da59f90379b1ea9b5a2476296c362217vboxsync    {
08870164da59f90379b1ea9b5a2476296c362217vboxsync#ifdef RTSEMMUTEX_STRICT
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync        hThreadSelf = RTThreadSelfAutoAdopt();
0fcf82b2591711fa8980e8f5d9cad1b8f222d6d7vboxsync        int rc9 = RTLockValidatorRecExclCheckOrderAndBlocking(&pThis->ValidatorRec, hThreadSelf, pSrcPos, true,
0fcf82b2591711fa8980e8f5d9cad1b8f222d6d7vboxsync                                                              RTTHREADSTATE_MUTEX, true);
08870164da59f90379b1ea9b5a2476296c362217vboxsync        if (RT_FAILURE(rc9))
08870164da59f90379b1ea9b5a2476296c362217vboxsync            return rc9;
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync#else
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync        hThreadSelf = RTThreadSelf();
0fcf82b2591711fa8980e8f5d9cad1b8f222d6d7vboxsync        RTThreadBlocking(hThreadSelf, RTTHREADSTATE_MUTEX, true);
c364b6c44a252ab65b514fa8f9a665cc5e33a1cevboxsync#endif
08870164da59f90379b1ea9b5a2476296c362217vboxsync    }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    int rc = WaitForSingleObjectEx(pThis->hMtx,
0d282f291fba8c5597b0cc338058a7976938975cvboxsync                                   cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies,
0d282f291fba8c5597b0cc338058a7976938975cvboxsync                                   TRUE /*bAlertable*/);
08870164da59f90379b1ea9b5a2476296c362217vboxsync    RTThreadUnblocked(hThreadSelf, RTTHREADSTATE_MUTEX);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    switch (rc)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    {
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        case WAIT_OBJECT_0:
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#ifdef RTSEMMUTEX_STRICT
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            RTLockValidatorRecExclSetOwner(&pThis->ValidatorRec, hThreadSelf, pSrcPos, true);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#endif
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            ASMAtomicWriteHandle(&pThis->hNativeOwner, hNativeSelf);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            ASMAtomicWriteU32(&pThis->cRecursions, 1);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync            return VINF_SUCCESS;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        case WAIT_TIMEOUT:          return VERR_TIMEOUT;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        case WAIT_IO_COMPLETION:    return VERR_INTERRUPTED;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        case WAIT_ABANDONED:        return VERR_SEM_OWNER_DIED;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        default:
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        {
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync            AssertMsgFailed(("Wait on MutexSem %p failed, rc=%d lasterr=%d\n", MutexSem, rc, GetLastError()));
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync            int rc2 = RTErrConvertFromWin32(GetLastError());
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync            if (rc2 != 0)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync                return rc2;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync            AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync            return VERR_INTERNAL_ERROR;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        }
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    }
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncRTDECL(int) RTSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifndef RTSEMMUTEX_STRICT
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync    return rtSemMutexRequestNoResume(MutexSem, cMillies, NULL);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#else
eaae6c3ce81916ccc4e74af4b55972ba956cf5c8vboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API();
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync    return rtSemMutexRequestNoResume(MutexSem, cMillies, &SrcPos);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync}
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncRTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX MutexSem, unsigned cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
eaae6c3ce81916ccc4e74af4b55972ba956cf5c8vboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync    return rtSemMutexRequestNoResume(MutexSem, cMillies, &SrcPos);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncRTDECL(int) RTSemMutexRelease(RTSEMMUTEX MutexSem)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     * Validate.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync     */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    RTSEMMUTEXINTERNAL *pThis = MutexSem;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    /*
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync     * Check ownership and recursions.
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync     */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTNATIVETHREAD hNativeSelf = RTThreadNativeSelf();
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTNATIVETHREAD hNativeOwner;
f847566a82fc74d59381a4a27553dbbf8c8061f4vboxsync    ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    if (RT_UNLIKELY(hNativeOwner != hNativeSelf))
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    {
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        AssertMsgFailed(("Not owner of mutex %p!! hNativeSelf=%RTntrd Owner=%RTntrd cRecursions=%d\n",
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync                         pThis, hNativeSelf, hNativeOwner, pThis->cRecursions));
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        return VERR_NOT_OWNER;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    }
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    if (pThis->cRecursions > 1)
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    {
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync#ifdef RTSEMMUTEX_STRICT
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        int rc9 = RTLockValidatorRecExclUnwind(&pThis->ValidatorRec);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        if (RT_FAILURE(rc9))
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync            return rc9;
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync#endif
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        ASMAtomicDecU32(&pThis->cRecursions);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        return VINF_SUCCESS;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    }
e75313c24325ec7bec84fa349abb39e246b6cc86vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync    /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     * Unlock mutex semaphore.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync     */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync#ifdef RTSEMMUTEX_STRICT
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    int rc9 = RTLockValidatorRecExclReleaseOwner(&pThis->ValidatorRec, false);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    if (RT_FAILURE(rc9))
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync        return rc9;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync#endif
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    ASMAtomicWriteU32(&pThis->cRecursions, 0);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    ASMAtomicWriteHandle(&pThis->hNativeOwner, NIL_RTNATIVETHREAD);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    if (ReleaseMutex(pThis->hMtx))
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync        return VINF_SUCCESS;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    int rc = RTErrConvertFromWin32(GetLastError());
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    AssertMsgFailed(("%p/%p, rc=%Rrc lasterr=%d\n", pThis, pThis->hMtx, rc, GetLastError()));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync    return rc;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsyncRTDECL(bool) RTSemMutexIsOwned(RTSEMMUTEX hMutex)
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync{
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    /*
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync     * Validate.
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync     */
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTSEMMUTEXINTERNAL *pThis = hMutex;
a84b1f249b9c68d3a05455fe946d02cc9a6772b5vboxsync    AssertPtrReturn(pThis, false);
a84b1f249b9c68d3a05455fe946d02cc9a6772b5vboxsync    AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, false);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    RTNATIVETHREAD hNativeOwner;
f847566a82fc74d59381a4a27553dbbf8c8061f4vboxsync    ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync    return hNativeOwner == NIL_RTNATIVETHREAD;
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync}
fff1586cd63d9b86dc6e14cb958a146446a60042vboxsync