semmutex-win.cpp revision b79e4344bf4eb8033fd06d560cd864192728bd0b
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
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#include <iprt/asm.h>
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#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). */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync uint32_t u32Magic;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /** Recursion count. */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync uint32_t volatile cRecursions;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /** The owner thread. */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTNATIVETHREAD volatile hNativeOwner;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /** The mutex handle. */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync HANDLE hMtx;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync /** Lock validator record associated with this mutex. */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTLOCKVALRECEXCL ValidatorRec;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#endif
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync};
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#undef RTSemMutexCreate
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsyncRTDECL(int) RTSemMutexCreate(PRTSEMMUTEX phMutexSem)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return RTSemMutexCreateEx(phMutexSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, NULL);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync}
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncRTDECL(int) RTSemMutexCreateEx(PRTSEMMUTEX phMutexSem, uint32_t fFlags,
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTLOCKVALCLASS hClass, uint32_t uSubClass, const char *pszNameFmt, ...)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertReturn(!(fFlags & ~RTSEMMUTEX_FLAGS_NO_LOCK_VAL), VERR_INVALID_PARAMETER);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Create the semaphore.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync int rc;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync HANDLE hMtx = CreateMutex(NULL, FALSE, NULL);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (hMtx)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTSEMMUTEXINTERNAL *pThis = (RTSEMMUTEXINTERNAL *)RTMemAlloc(sizeof(*pThis));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (pThis)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync pThis->u32Magic = RTSEMMUTEX_MAGIC;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync pThis->hMtx = hMtx;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync pThis->hNativeOwner = NIL_RTNATIVETHREAD;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync pThis->cRecursions = 0;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync va_list va;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync va_start(va, pszNameFmt);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTLockValidatorRecExclInitV(&pThis->ValidatorRec, hClass, uSubClass, pThis,
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync !(fFlags & RTSEMMUTEX_FLAGS_NO_LOCK_VAL), pszNameFmt, va);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync va_end(va);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync *phMutexSem = pThis;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync rc = VERR_NO_MEMORY;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync }
0d282f291fba8c5597b0cc338058a7976938975cvboxsync else
0d282f291fba8c5597b0cc338058a7976938975cvboxsync rc = RTErrConvertFromWin32(GetLastError());
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync}
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncRTDECL(int) RTSemMutexDestroy(RTSEMMUTEX hMutexSem)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Validate.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTSEMMUTEXINTERNAL *pThis = hMutexSem;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync 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 /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Close semaphore handle.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, RTSEMMUTEX_MAGIC_DEAD, RTSEMMUTEX_MAGIC), VERR_INVALID_HANDLE);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync HANDLE hMtx = pThis->hMtx;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync ASMAtomicWritePtr((void * volatile *)&pThis->hMtx, (void *)INVALID_HANDLE_VALUE);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync int rc = VINF_SUCCESS;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (!CloseHandle(hMtx))
0d282f291fba8c5597b0cc338058a7976938975cvboxsync {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync rc = RTErrConvertFromWin32(GetLastError());
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync AssertMsgFailed(("%p rc=%d lasterr=%d\n", pThis->hMtx, rc, GetLastError()));
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync }
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync RTLockValidatorRecExclDelete(&pThis->ValidatorRec);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#endif
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTMemFree(pThis);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync}
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsyncRTDECL(uint32_t) RTSemMutexSetSubClass(RTSEMMUTEX hMutexSem, uint32_t uSubClass)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync{
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync * Validate.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTSEMMUTEXINTERNAL *pThis = hMutexSem;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertPtrReturn(pThis, RTLOCKVAL_SUB_CLASS_INVALID);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, RTLOCKVAL_SUB_CLASS_INVALID);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return RTLockValidatorRecExclSetSubClass(&pThis->ValidatorRec, uSubClass);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#else
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return RTLOCKVAL_SUB_CLASS_INVALID;
08870164da59f90379b1ea9b5a2476296c362217vboxsync#endif
08870164da59f90379b1ea9b5a2476296c362217vboxsync}
08870164da59f90379b1ea9b5a2476296c362217vboxsync
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync
08870164da59f90379b1ea9b5a2476296c362217vboxsync/**
08870164da59f90379b1ea9b5a2476296c362217vboxsync * Internal worker for RTSemMutexRequestNoResume and it's debug companion.
08870164da59f90379b1ea9b5a2476296c362217vboxsync *
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync * @returns Same as RTSEmMutexRequestNoResume
08870164da59f90379b1ea9b5a2476296c362217vboxsync * @param hMutexSem The mutex handle.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @param cMillies The number of milliseconds to wait.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * @param pSrcPos The source position of the caller.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
08870164da59f90379b1ea9b5a2476296c362217vboxsyncDECL_FORCE_INLINE(int) rtSemMutexRequestNoResume(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies, PCRTLOCKVALSRCPOS pSrcPos)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync{
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Validate.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync RTSEMMUTEXINTERNAL *pThis = hMutexSem;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync /*
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync * Check for recursive entry.
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync */
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTNATIVETHREAD hNativeSelf = RTThreadNativeSelf();
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync RTNATIVETHREAD hNativeOwner;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync if (hNativeOwner == hNativeSelf)
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync {
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#ifdef RTSEMMUTEX_STRICT
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync int rc9 = RTLockValidatorRecExclRecursion(&pThis->ValidatorRec, pSrcPos);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync if (RT_FAILURE(rc9))
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return rc9;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#endif
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync ASMAtomicIncU32(&pThis->cRecursions);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return VINF_SUCCESS;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync }
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync /*
0d282f291fba8c5597b0cc338058a7976938975cvboxsync * Lock mutex semaphore.
0d282f291fba8c5597b0cc338058a7976938975cvboxsync */
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync RTTHREAD hThreadSelf = NIL_RTTHREAD;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (cMillies > 0)
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync {
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync#ifdef RTSEMMUTEX_STRICT
0d282f291fba8c5597b0cc338058a7976938975cvboxsync hThreadSelf = RTThreadSelfAutoAdopt();
0d282f291fba8c5597b0cc338058a7976938975cvboxsync int rc9 = RTLockValidatorRecExclCheckOrderAndBlocking(&pThis->ValidatorRec, hThreadSelf, pSrcPos, true,
0d282f291fba8c5597b0cc338058a7976938975cvboxsync cMillies, RTTHREADSTATE_MUTEX, true);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (RT_FAILURE(rc9))
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc9;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#else
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync hThreadSelf = RTThreadSelf();
4b0369e0c9bcae37f2801e0f7b92509bbbaf4becvboxsync RTThreadBlocking(hThreadSelf, RTTHREADSTATE_MUTEX, true);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync#endif
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync }
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync DWORD rc = WaitForSingleObjectEx(pThis->hMtx,
0d282f291fba8c5597b0cc338058a7976938975cvboxsync cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies,
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync TRUE /*fAlertable*/);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTThreadUnblocked(hThreadSelf, RTTHREADSTATE_MUTEX);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync switch (rc)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync {
0d282f291fba8c5597b0cc338058a7976938975cvboxsync case WAIT_OBJECT_0:
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#ifdef RTSEMMUTEX_STRICT
0d282f291fba8c5597b0cc338058a7976938975cvboxsync RTLockValidatorRecExclSetOwner(&pThis->ValidatorRec, hThreadSelf, pSrcPos, true);
0d282f291fba8c5597b0cc338058a7976938975cvboxsync#endif
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync ASMAtomicWriteHandle(&pThis->hNativeOwner, hNativeSelf);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync ASMAtomicWriteU32(&pThis->cRecursions, 1);
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync return VINF_SUCCESS;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
0d282f291fba8c5597b0cc338058a7976938975cvboxsync case WAIT_TIMEOUT: return VERR_TIMEOUT;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
08870164da59f90379b1ea9b5a2476296c362217vboxsync case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
0d282f291fba8c5597b0cc338058a7976938975cvboxsync default:
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertMsgFailed(("%u\n", rc));
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync case WAIT_FAILED:
0d282f291fba8c5597b0cc338058a7976938975cvboxsync {
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync int rc2 = RTErrConvertFromWin32(GetLastError());
0d282f291fba8c5597b0cc338058a7976938975cvboxsync AssertMsgFailed(("Wait on hMutexSem %p failed, rc=%d lasterr=%d\n", hMutexSem, rc, GetLastError()));
0d282f291fba8c5597b0cc338058a7976938975cvboxsync if (rc2 != VINF_SUCCESS)
0d282f291fba8c5597b0cc338058a7976938975cvboxsync return rc2;
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync
5964f60ed7fb52a3c4becbe83c9429f9b2f119c2vboxsync AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
return VERR_INTERNAL_ERROR;
}
}
}
#undef RTSemMutexRequestNoResume
RTDECL(int) RTSemMutexRequestNoResume(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies)
{
#ifndef RTSEMMUTEX_STRICT
return rtSemMutexRequestNoResume(hMutexSem, cMillies, NULL);
#else
RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API();
return rtSemMutexRequestNoResume(hMutexSem, cMillies, &SrcPos);
#endif
}
RTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
{
RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
return rtSemMutexRequestNoResume(hMutexSem, cMillies, &SrcPos);
}
RTDECL(int) RTSemMutexRelease(RTSEMMUTEX hMutexSem)
{
/*
* Validate.
*/
RTSEMMUTEXINTERNAL *pThis = hMutexSem;
AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, VERR_INVALID_HANDLE);
/*
* Check ownership and recursions.
*/
RTNATIVETHREAD hNativeSelf = RTThreadNativeSelf();
RTNATIVETHREAD hNativeOwner;
ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
if (RT_UNLIKELY(hNativeOwner != hNativeSelf))
{
AssertMsgFailed(("Not owner of mutex %p!! hNativeSelf=%RTntrd Owner=%RTntrd cRecursions=%d\n",
pThis, hNativeSelf, hNativeOwner, pThis->cRecursions));
return VERR_NOT_OWNER;
}
if (pThis->cRecursions > 1)
{
#ifdef RTSEMMUTEX_STRICT
int rc9 = RTLockValidatorRecExclUnwind(&pThis->ValidatorRec);
if (RT_FAILURE(rc9))
return rc9;
#endif
ASMAtomicDecU32(&pThis->cRecursions);
return VINF_SUCCESS;
}
/*
* Unlock mutex semaphore.
*/
#ifdef RTSEMMUTEX_STRICT
int rc9 = RTLockValidatorRecExclReleaseOwner(&pThis->ValidatorRec, false);
if (RT_FAILURE(rc9))
return rc9;
#endif
ASMAtomicWriteU32(&pThis->cRecursions, 0);
ASMAtomicWriteHandle(&pThis->hNativeOwner, NIL_RTNATIVETHREAD);
if (ReleaseMutex(pThis->hMtx))
return VINF_SUCCESS;
int rc = RTErrConvertFromWin32(GetLastError());
AssertMsgFailed(("%p/%p, rc=%Rrc lasterr=%d\n", pThis, pThis->hMtx, rc, GetLastError()));
return rc;
}
RTDECL(bool) RTSemMutexIsOwned(RTSEMMUTEX hMutexSem)
{
/*
* Validate.
*/
RTSEMMUTEXINTERNAL *pThis = hMutexSem;
AssertPtrReturn(pThis, false);
AssertReturn(pThis->u32Magic == RTSEMMUTEX_MAGIC, false);
RTNATIVETHREAD hNativeOwner;
ASMAtomicReadHandle(&pThis->hNativeOwner, &hNativeOwner);
return hNativeOwner != NIL_RTNATIVETHREAD;
}