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/* $Id: semspinmutex-r3-generic.cpp $ */
/** @file
* IPRT - Spinning Mutex Semaphores, Ring-3, Generic.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* 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 *
*********************************************************************************************************************************/
#include <iprt/semaphore.h>
#include "internal/iprt.h"
#include <iprt/alloc.h>
#include <iprt/errcore.h>
#include <iprt/assert.h>
#include <iprt/critsect.h>
RTDECL(int) RTSemSpinMutexCreate(PRTSEMSPINMUTEX phSpinMtx, uint32_t fFlags)
{
AssertReturn(!(fFlags & ~RTSEMSPINMUTEX_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
AssertPtr(phSpinMtx);
PRTCRITSECT pCritSect = (PRTCRITSECT)RTMemAlloc(sizeof(RTCRITSECT));
if (!pCritSect)
return VERR_NO_MEMORY;
int rc = RTCritSectInitEx(pCritSect, RTCRITSECT_FLAGS_NO_NESTING | RTCRITSECT_FLAGS_NO_LOCK_VAL,
NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, "RTSemSpinMutex");
if (RT_SUCCESS(rc))
*phSpinMtx = (RTSEMSPINMUTEX)pCritSect;
else
RTMemFree(pCritSect);
return rc;
}
RT_EXPORT_SYMBOL(RTSemSpinMutexCreate);
RTDECL(int) RTSemSpinMutexDestroy(RTSEMSPINMUTEX hSpinMtx)
{
if (hSpinMtx == NIL_RTSEMSPINMUTEX)
return VERR_INVALID_PARAMETER;
PRTCRITSECT pCritSect = (PRTCRITSECT)hSpinMtx;
int rc = RTCritSectDelete(pCritSect);
if (RT_SUCCESS(rc))
RTMemFree(pCritSect);
return rc;
}
RT_EXPORT_SYMBOL(RTSemSpinMutexDestroy);
RTDECL(int) RTSemSpinMutexTryRequest(RTSEMSPINMUTEX hSpinMtx)
{
return RTCritSectTryEnter((PRTCRITSECT)hSpinMtx);
}
RT_EXPORT_SYMBOL(RTSemSpinMutexTryRequest);
RTDECL(int) RTSemSpinMutexRequest(RTSEMSPINMUTEX hSpinMtx)
{
return RTCritSectEnter((PRTCRITSECT)hSpinMtx);
}
RT_EXPORT_SYMBOL(RTSemSpinMutexRequest);
RTDECL(int) RTSemSpinMutexRelease(RTSEMSPINMUTEX hSpinMtx)
{
return RTCritSectLeave((PRTCRITSECT)hSpinMtx);
}
RT_EXPORT_SYMBOL(RTSemSpinMutexRelease);
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