0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync/* $Id$ */
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync/** @file
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * IPRT - Spinning Mutex Semaphores, Ring-3, Generic.
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync */
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync/*
c58f1213e628a545081c70e26c6b67a841cff880vboxsync * Copyright (C) 2006-2010 Oracle Corporation
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync *
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * available from http://www.virtualbox.org. This file is free software;
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * you can redistribute it and/or modify it under the terms of the GNU
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * General Public License (GPL) as published by the Free Software
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync *
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * The contents of this file may alternatively be used under the terms
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * of the Common Development and Distribution License Version 1.0
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * VirtualBox OSE distribution, in which case the provisions of the
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * CDDL are applicable instead of those of the GPL.
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync *
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * You may elect to license modified versions of this file under the
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync * terms and conditions of either the GPL or the CDDL or both.
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync */
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync/*******************************************************************************
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync* Header Files *
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync*******************************************************************************/
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync#include <iprt/semaphore.h>
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync#include "internal/iprt.h"
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync#include <iprt/alloc.h>
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync#include <iprt/err.h>
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync#include <iprt/assert.h>
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync#include <iprt/critsect.h>
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRTDECL(int) RTSemSpinMutexCreate(PRTSEMSPINMUTEX phSpinMtx, uint32_t fFlags)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync{
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync AssertReturn(!(fFlags & ~RTSEMSPINMUTEX_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync AssertPtr(phSpinMtx);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync PRTCRITSECT pCritSect = (PRTCRITSECT)RTMemAlloc(sizeof(RTCRITSECT));
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync if (!pCritSect)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return VERR_NO_MEMORY;
2805b95732a8d26015a397626b96049a6e6573e7vboxsync int rc = RTCritSectInitEx(pCritSect, RTCRITSECT_FLAGS_NO_NESTING | RTCRITSECT_FLAGS_NO_LOCK_VAL,
2805b95732a8d26015a397626b96049a6e6573e7vboxsync NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, "RTSemSpinMutex");
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync if (RT_SUCCESS(rc))
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync *phSpinMtx = (RTSEMSPINMUTEX)pCritSect;
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync else
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync RTMemFree(pCritSect);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return rc;
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync}
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRT_EXPORT_SYMBOL(RTSemSpinMutexCreate);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRTDECL(int) RTSemSpinMutexDestroy(RTSEMSPINMUTEX hSpinMtx)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync{
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync if (hSpinMtx == NIL_RTSEMSPINMUTEX)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return VERR_INVALID_PARAMETER;
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync PRTCRITSECT pCritSect = (PRTCRITSECT)hSpinMtx;
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync int rc = RTCritSectDelete(pCritSect);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync if (RT_SUCCESS(rc))
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync RTMemFree(pCritSect);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return rc;
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync}
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRT_EXPORT_SYMBOL(RTSemSpinMutexDestroy);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRTDECL(int) RTSemSpinMutexTryRequest(RTSEMSPINMUTEX hSpinMtx)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync{
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return RTCritSectTryEnter((PRTCRITSECT)hSpinMtx);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync}
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRT_EXPORT_SYMBOL(RTSemSpinMutexTryRequest);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRTDECL(int) RTSemSpinMutexRequest(RTSEMSPINMUTEX hSpinMtx)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync{
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return RTCritSectEnter((PRTCRITSECT)hSpinMtx);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync}
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRT_EXPORT_SYMBOL(RTSemSpinMutexRequest);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRTDECL(int) RTSemSpinMutexRelease(RTSEMSPINMUTEX hSpinMtx)
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync{
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync return RTCritSectLeave((PRTCRITSECT)hSpinMtx);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync}
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsyncRT_EXPORT_SYMBOL(RTSemSpinMutexRelease);
0b4890533cbae4f30a0241d0780d4ff9daa304f4vboxsync