semmutex-r0drv-nt.cpp revision 715e49c31b15c23c17a9ce3be42a75e7c48d4b78
/* $Id$ */
/** @file
* IPRT - Mutex Semaphores, Ring-0 Driver, NT.
*/
/*
* Copyright (C) 2006-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* 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 RTSEMMUTEX_WITHOUT_REMAPPING
#include "the-nt-kernel.h"
#include <iprt/semaphore.h>
/*******************************************************************************
* Structures and Typedefs *
*******************************************************************************/
/**
* NT mutex semaphore.
*/
typedef struct RTSEMMUTEXINTERNAL
{
/** Magic value (RTSEMMUTEX_MAGIC). */
#ifdef RT_USE_FAST_MUTEX
/** The fast mutex object. */
#else
/** The NT Mutex object. */
#endif
{
return RTSemMutexCreateEx(phMutexSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, NULL);
}
{
AssertCompile(sizeof(RTSEMMUTEXINTERNAL) > sizeof(void *));
if (!pThis)
return VERR_NO_MEMORY;
#ifdef RT_USE_FAST_MUTEX
#else
#endif
*phMutexSem = pThis;
return VINF_SUCCESS;
}
{
/*
* Validate input.
*/
if (pThis == NIL_RTSEMMUTEX)
return VINF_SUCCESS;
/*
* Invalidate it and signal the object just in case.
*/
AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, RTSEMMUTEX_MAGIC_DEAD, RTSEMMUTEX_MAGIC), VERR_INVALID_HANDLE);
return VINF_SUCCESS;
}
/**
* Internal worker for RTSemMutexRequest and RTSemMutexRequestNoResume
*
* @returns IPRT status code.
* @param hMutexSem The mutex handle.
* @param cMillies The timeout.
* @param fInterruptible Whether it's interruptible
* (RTSemMutexRequestNoResume) or not
* (RTSemMutexRequest).
*/
{
/*
* Validate input.
*/
/*
* Get the mutex.
*/
#ifdef RT_USE_FAST_MUTEX
AssertMsg(cMillies == RT_INDEFINITE_WAIT, ("timeouts are not supported when using fast mutexes!\n"));
#else /* !RT_USE_FAST_MUTEX */
if (cMillies == RT_INDEFINITE_WAIT)
else
{
}
switch (rcNt)
{
case STATUS_SUCCESS:
return VINF_SUCCESS;
return VERR_SEM_DESTROYED;
case STATUS_ALERTED:
case STATUS_USER_APC:
return VERR_INTERRUPTED;
case STATUS_TIMEOUT:
return VERR_TIMEOUT;
default:
AssertMsgFailed(("pThis->u32Magic=%RX32 pThis=%p: wait returned %lx!\n",
return VERR_INTERNAL_ERROR;
}
#endif /* !RT_USE_FAST_MUTEX */
return VINF_SUCCESS;
}
{
}
RTDECL(int) RTSemMutexRequestDebug(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
{
}
{
}
RTDECL(int) RTSemMutexRequestNoResumeDebug(RTSEMMUTEX hMutexSem, RTMSINTERVAL cMillies, RTHCUINTPTR uId, RT_SRC_POS_DECL)
{
}
{
/*
* Validate input.
*/
/*
* Release the mutex.
*/
#ifdef RT_USE_FAST_MUTEX
#else
#endif
return VINF_SUCCESS;
}
{
/*
* Validate.
*/
AssertPtrReturn(pThis, false);
#ifdef RT_USE_FAST_MUTEX
#else
#endif
}