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Diffstat (limited to '')
-rw-r--r-- | src/VBox/Runtime/r0drv/solaris/semfastmutex-r0drv-solaris.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/solaris/semfastmutex-r0drv-solaris.c b/src/VBox/Runtime/r0drv/solaris/semfastmutex-r0drv-solaris.c new file mode 100644 index 00000000..4b161294 --- /dev/null +++ b/src/VBox/Runtime/r0drv/solaris/semfastmutex-r0drv-solaris.c @@ -0,0 +1,120 @@ +/* $Id: semfastmutex-r0drv-solaris.c $ */ +/** @file + * IPRT - Fast Mutex Semaphores, Ring-0 Driver, Solaris. + */ + +/* + * 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 "the-solaris-kernel.h" +#include "internal/iprt.h" +#include <iprt/semaphore.h> + +#include <iprt/asm.h> +#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) +# include <iprt/asm-amd64-x86.h> +#endif +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include <iprt/mem.h> +#include <iprt/thread.h> +#include "internal/magics.h" + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +/** + * Wrapper for the Solaris mutex. + */ +typedef struct RTSEMFASTMUTEXINTERNAL +{ + /** Magic value (RTSEMFASTMUTEX_MAGIC). */ + uint32_t u32Magic; + /** The Solaris mutex. */ + krwlock_t Mtx; +} RTSEMFASTMUTEXINTERNAL, *PRTSEMFASTMUTEXINTERNAL; + + + +RTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX phFastMtx) +{ + AssertCompile(sizeof(RTSEMFASTMUTEXINTERNAL) > sizeof(void *)); + AssertPtrReturn(phFastMtx, VERR_INVALID_POINTER); + RT_ASSERT_PREEMPTIBLE(); + + PRTSEMFASTMUTEXINTERNAL pThis = (PRTSEMFASTMUTEXINTERNAL)RTMemAlloc(sizeof(*pThis)); + if (pThis) + { + pThis->u32Magic = RTSEMFASTMUTEX_MAGIC; + rw_init (&pThis->Mtx, "RWLOCK", RW_DRIVER, NULL); + + *phFastMtx = pThis; + return VINF_SUCCESS; + } + return VERR_NO_MEMORY; +} + + +RTDECL(int) RTSemFastMutexDestroy(RTSEMFASTMUTEX hFastMtx) +{ + PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx; + if (pThis == NIL_RTSEMFASTMUTEX) + return VINF_SUCCESS; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE); + RT_ASSERT_INTS_ON(); + + ASMAtomicXchgU32(&pThis->u32Magic, RTSEMFASTMUTEX_MAGIC_DEAD); + rw_destroy(&pThis->Mtx); + RTMemFree(pThis); + + return VINF_SUCCESS; +} + + +RTDECL(int) RTSemFastMutexRequest(RTSEMFASTMUTEX hFastMtx) +{ + PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE); + RT_ASSERT_PREEMPTIBLE(); + + rw_enter(&pThis->Mtx, RW_WRITER); + return VINF_SUCCESS; +} + + +RTDECL(int) RTSemFastMutexRelease(RTSEMFASTMUTEX hFastMtx) +{ + PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx; + AssertPtrReturn(pThis, VERR_INVALID_HANDLE); + AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE); + RT_ASSERT_INTS_ON(); + + rw_exit(&pThis->Mtx); + return VINF_SUCCESS; +} + |