VirtualBox

source: vbox/trunk/src/VBox/Runtime/r0drv/solaris/semfastmutex-r0drv-solaris.c@ 81106

Last change on this file since 81106 was 76553, checked in by vboxsync, 6 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 4.2 KB
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1/* $Id: semfastmutex-r0drv-solaris.c 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * IPRT - Fast Mutex Semaphores, Ring-0 Driver, Solaris.
4 */
5
6/*
7 * Copyright (C) 2006-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include "the-solaris-kernel.h"
32#include "internal/iprt.h"
33#include <iprt/semaphore.h>
34
35#include <iprt/asm.h>
36#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
37# include <iprt/asm-amd64-x86.h>
38#endif
39#include <iprt/assert.h>
40#include <iprt/errcore.h>
41#include <iprt/mem.h>
42#include <iprt/thread.h>
43#include "internal/magics.h"
44
45
46/*********************************************************************************************************************************
47* Structures and Typedefs *
48*********************************************************************************************************************************/
49/**
50 * Wrapper for the Solaris mutex.
51 */
52typedef struct RTSEMFASTMUTEXINTERNAL
53{
54 /** Magic value (RTSEMFASTMUTEX_MAGIC). */
55 uint32_t u32Magic;
56 /** The Solaris mutex. */
57 krwlock_t Mtx;
58} RTSEMFASTMUTEXINTERNAL, *PRTSEMFASTMUTEXINTERNAL;
59
60
61
62RTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX phFastMtx)
63{
64 AssertCompile(sizeof(RTSEMFASTMUTEXINTERNAL) > sizeof(void *));
65 AssertPtrReturn(phFastMtx, VERR_INVALID_POINTER);
66 RT_ASSERT_PREEMPTIBLE();
67
68 PRTSEMFASTMUTEXINTERNAL pThis = (PRTSEMFASTMUTEXINTERNAL)RTMemAlloc(sizeof(*pThis));
69 if (pThis)
70 {
71 pThis->u32Magic = RTSEMFASTMUTEX_MAGIC;
72 rw_init (&pThis->Mtx, "RWLOCK", RW_DRIVER, NULL);
73
74 *phFastMtx = pThis;
75 return VINF_SUCCESS;
76 }
77 return VERR_NO_MEMORY;
78}
79
80
81RTDECL(int) RTSemFastMutexDestroy(RTSEMFASTMUTEX hFastMtx)
82{
83 PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx;
84 if (pThis == NIL_RTSEMFASTMUTEX)
85 return VINF_SUCCESS;
86 AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
87 AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
88 RT_ASSERT_INTS_ON();
89
90 ASMAtomicXchgU32(&pThis->u32Magic, RTSEMFASTMUTEX_MAGIC_DEAD);
91 rw_destroy(&pThis->Mtx);
92 RTMemFree(pThis);
93
94 return VINF_SUCCESS;
95}
96
97
98RTDECL(int) RTSemFastMutexRequest(RTSEMFASTMUTEX hFastMtx)
99{
100 PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx;
101 AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
102 AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
103 RT_ASSERT_PREEMPTIBLE();
104
105 rw_enter(&pThis->Mtx, RW_WRITER);
106 return VINF_SUCCESS;
107}
108
109
110RTDECL(int) RTSemFastMutexRelease(RTSEMFASTMUTEX hFastMtx)
111{
112 PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx;
113 AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
114 AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
115 RT_ASSERT_INTS_ON();
116
117 rw_exit(&pThis->Mtx);
118 return VINF_SUCCESS;
119}
120
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