VirtualBox

source: vbox/trunk/src/VBox/Runtime/generic/semfastmutex-generic.cpp@ 100762

Last change on this file since 100762 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

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1/* $Id: semfastmutex-generic.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - Fast Mutex, Generic.
4 */
5
6/*
7 * Copyright (C) 2006-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include <iprt/semaphore.h>
42#include "internal/iprt.h"
43
44#include <iprt/alloc.h>
45#include <iprt/errcore.h>
46#include <iprt/critsect.h>
47
48
49
50RTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX phFastMtx)
51{
52 PRTCRITSECT pCritSect = (PRTCRITSECT)RTMemAlloc(sizeof(RTCRITSECT));
53 if (!pCritSect)
54 return VERR_NO_MEMORY;
55
56 int rc = RTCritSectInitEx(pCritSect, RTCRITSECT_FLAGS_NO_NESTING,
57 NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, NULL);
58 if (RT_SUCCESS(rc))
59 *phFastMtx = (RTSEMFASTMUTEX)pCritSect;
60 else
61 RTMemFree(pCritSect);
62 return rc;
63}
64RT_EXPORT_SYMBOL(RTSemFastMutexCreate);
65
66
67RTDECL(int) RTSemFastMutexDestroy(RTSEMFASTMUTEX hFastMtx)
68{
69 if (hFastMtx == NIL_RTSEMFASTMUTEX)
70 return VERR_INVALID_PARAMETER;
71 PRTCRITSECT pCritSect = (PRTCRITSECT)hFastMtx;
72 int rc = RTCritSectDelete(pCritSect);
73 if (RT_SUCCESS(rc))
74 RTMemFree(pCritSect);
75 return rc;
76}
77RT_EXPORT_SYMBOL(RTSemFastMutexDestroy);
78
79
80RTDECL(int) RTSemFastMutexRequest(RTSEMFASTMUTEX hFastMtx)
81{
82 return RTCritSectEnter((PRTCRITSECT)hFastMtx);
83}
84RT_EXPORT_SYMBOL(RTSemFastMutexRequest);
85
86
87RTDECL(int) RTSemFastMutexRelease(RTSEMFASTMUTEX hFastMtx)
88{
89 return RTCritSectLeave((PRTCRITSECT)hFastMtx);
90}
91RT_EXPORT_SYMBOL(RTSemFastMutexRelease);
92
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