| 1 | /* $Id: semfastmutex-r0drv-solaris.c 16200 2009-01-23 15:26:36Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Fast Mutex Semaphores, Ring-0 Driver, Solaris.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
|
|---|
| 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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
|
|---|
| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
|
|---|
| 28 | * additional information or have any questions.
|
|---|
| 29 | */
|
|---|
| 30 |
|
|---|
| 31 |
|
|---|
| 32 | /*******************************************************************************
|
|---|
| 33 | * Header Files *
|
|---|
| 34 | *******************************************************************************/
|
|---|
| 35 | #include "the-solaris-kernel.h"
|
|---|
| 36 |
|
|---|
| 37 | #include <iprt/semaphore.h>
|
|---|
| 38 | #include <iprt/err.h>
|
|---|
| 39 | #include <iprt/alloc.h>
|
|---|
| 40 | #include <iprt/assert.h>
|
|---|
| 41 | #include <iprt/asm.h>
|
|---|
| 42 |
|
|---|
| 43 | #include "internal/magics.h"
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | /*******************************************************************************
|
|---|
| 47 | * Structures and Typedefs *
|
|---|
| 48 | *******************************************************************************/
|
|---|
| 49 | /**
|
|---|
| 50 | * Wrapper for the Solaris mutex.
|
|---|
| 51 | */
|
|---|
| 52 | typedef 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 | RTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX pMutexSem)
|
|---|
| 62 | {
|
|---|
| 63 | AssertCompile(sizeof(RTSEMFASTMUTEXINTERNAL) > sizeof(void *));
|
|---|
| 64 | AssertPtrReturn(pMutexSem, VERR_INVALID_POINTER);
|
|---|
| 65 |
|
|---|
| 66 | PRTSEMFASTMUTEXINTERNAL pFastInt = (PRTSEMFASTMUTEXINTERNAL)RTMemAlloc(sizeof(*pFastInt));
|
|---|
| 67 | if (pFastInt)
|
|---|
| 68 | {
|
|---|
| 69 | pFastInt->u32Magic = RTSEMFASTMUTEX_MAGIC;
|
|---|
| 70 | rw_init (&pFastInt->Mtx, "RWLOCK", RW_DRIVER, NULL);
|
|---|
| 71 | *pMutexSem = pFastInt;
|
|---|
| 72 | return VINF_SUCCESS;
|
|---|
| 73 | }
|
|---|
| 74 | return VERR_NO_MEMORY;
|
|---|
| 75 | }
|
|---|
| 76 |
|
|---|
| 77 |
|
|---|
| 78 | RTDECL(int) RTSemFastMutexDestroy(RTSEMFASTMUTEX MutexSem)
|
|---|
| 79 | {
|
|---|
| 80 | if (MutexSem == NIL_RTSEMFASTMUTEX)
|
|---|
| 81 | return VERR_INVALID_PARAMETER;
|
|---|
| 82 | PRTSEMFASTMUTEXINTERNAL pFastInt = (PRTSEMFASTMUTEXINTERNAL)MutexSem;
|
|---|
| 83 | AssertPtrReturn(pFastInt, VERR_INVALID_PARAMETER);
|
|---|
| 84 | AssertMsgReturn(pFastInt->u32Magic == RTSEMFASTMUTEX_MAGIC,
|
|---|
| 85 | ("pFastInt->u32Magic=%RX32 pFastInt=%p\n", pFastInt->u32Magic, pFastInt),
|
|---|
| 86 | VERR_INVALID_PARAMETER);
|
|---|
| 87 |
|
|---|
| 88 | ASMAtomicXchgU32(&pFastInt->u32Magic, RTSEMFASTMUTEX_MAGIC_DEAD);
|
|---|
| 89 | rw_destroy(&pFastInt->Mtx);
|
|---|
| 90 | RTMemFree(pFastInt);
|
|---|
| 91 |
|
|---|
| 92 | return VINF_SUCCESS;
|
|---|
| 93 | }
|
|---|
| 94 |
|
|---|
| 95 |
|
|---|
| 96 | RTDECL(int) RTSemFastMutexRequest(RTSEMFASTMUTEX MutexSem)
|
|---|
| 97 | {
|
|---|
| 98 | PRTSEMFASTMUTEXINTERNAL pFastInt = (PRTSEMFASTMUTEXINTERNAL)MutexSem;
|
|---|
| 99 | AssertPtrReturn(pFastInt, VERR_INVALID_PARAMETER);
|
|---|
| 100 | AssertMsgReturn(pFastInt->u32Magic == RTSEMFASTMUTEX_MAGIC,
|
|---|
| 101 | ("pFastInt->u32Magic=%RX32 pFastInt=%p\n", pFastInt->u32Magic, pFastInt),
|
|---|
| 102 | VERR_INVALID_PARAMETER);
|
|---|
| 103 |
|
|---|
| 104 | rw_enter(&pFastInt->Mtx, RW_WRITER);
|
|---|
| 105 | return VINF_SUCCESS;
|
|---|
| 106 | }
|
|---|
| 107 |
|
|---|
| 108 |
|
|---|
| 109 | RTDECL(int) RTSemFastMutexRelease(RTSEMFASTMUTEX MutexSem)
|
|---|
| 110 | {
|
|---|
| 111 | PRTSEMFASTMUTEXINTERNAL pFastInt = (PRTSEMFASTMUTEXINTERNAL)MutexSem;
|
|---|
| 112 | AssertPtrReturn(pFastInt, VERR_INVALID_PARAMETER);
|
|---|
| 113 | AssertMsgReturn(pFastInt->u32Magic == RTSEMFASTMUTEX_MAGIC,
|
|---|
| 114 | ("pFastInt->u32Magic=%RX32 pFastInt=%p\n", pFastInt->u32Magic, pFastInt),
|
|---|
| 115 | VERR_INVALID_PARAMETER);
|
|---|
| 116 |
|
|---|
| 117 | rw_exit(&pFastInt->Mtx);
|
|---|
| 118 | return VINF_SUCCESS;
|
|---|
| 119 | }
|
|---|
| 120 |
|
|---|
