29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync/* $Id$ */
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync/** @file
5b281ba489ca18f0380d7efc7a5108b606cce449vboxsync * IPRT - Fast Mutex Semaphores, Ring-0 Driver, Solaris.
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync */
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync/*
c58f1213e628a545081c70e26c6b67a841cff880vboxsync * Copyright (C) 2006-2010 Oracle Corporation
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync *
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync * available from http://www.virtualbox.org. This file is free software;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync *
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * The contents of this file may alternatively be used under the terms
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * of the Common Development and Distribution License Version 1.0
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution, in which case the provisions of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * CDDL are applicable instead of those of the GPL.
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync *
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * You may elect to license modified versions of this file under the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * terms and conditions of either the GPL or the CDDL or both.
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync */
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync/*******************************************************************************
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync* Header Files *
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync*******************************************************************************/
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync#include "the-solaris-kernel.h"
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync#include "internal/iprt.h"
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync#include <iprt/semaphore.h>
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync#include <iprt/asm.h>
cbd4e5863be36b70c59ebeb02a611a763f9d58f1vboxsync#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
cbd4e5863be36b70c59ebeb02a611a763f9d58f1vboxsync# include <iprt/asm-amd64-x86.h>
cbd4e5863be36b70c59ebeb02a611a763f9d58f1vboxsync#endif
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync#include <iprt/assert.h>
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync#include <iprt/err.h>
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync#include <iprt/mem.h>
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync#include <iprt/thread.h>
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync#include "internal/magics.h"
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync/*******************************************************************************
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync* Structures and Typedefs *
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync*******************************************************************************/
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync/**
e7e8a6cb1597db3e0a1a83733e1d90e7a1688647vboxsync * Wrapper for the Solaris mutex.
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync */
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsynctypedef struct RTSEMFASTMUTEXINTERNAL
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync{
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync /** Magic value (RTSEMFASTMUTEX_MAGIC). */
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync uint32_t u32Magic;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync /** The Solaris mutex. */
c24d5fdb5a1880e221ebde9d3f733903b9233596vboxsync krwlock_t Mtx;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync} RTSEMFASTMUTEXINTERNAL, *PRTSEMFASTMUTEXINTERNAL;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsyncRTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX phFastMtx)
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync{
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync AssertCompile(sizeof(RTSEMFASTMUTEXINTERNAL) > sizeof(void *));
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertPtrReturn(phFastMtx, VERR_INVALID_POINTER);
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync RT_ASSERT_PREEMPTIBLE();
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync PRTSEMFASTMUTEXINTERNAL pThis = (PRTSEMFASTMUTEXINTERNAL)RTMemAlloc(sizeof(*pThis));
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync if (pThis)
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync {
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync pThis->u32Magic = RTSEMFASTMUTEX_MAGIC;
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync rw_init (&pThis->Mtx, "RWLOCK", RW_DRIVER, NULL);
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync *phFastMtx = pThis;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync return VINF_SUCCESS;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync }
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync return VERR_NO_MEMORY;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync}
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsyncRTDECL(int) RTSemFastMutexDestroy(RTSEMFASTMUTEX hFastMtx)
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync{
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx;
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync if (pThis == NIL_RTSEMFASTMUTEX)
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync return VINF_SUCCESS;
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync RT_ASSERT_INTS_ON();
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync ASMAtomicXchgU32(&pThis->u32Magic, RTSEMFASTMUTEX_MAGIC_DEAD);
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync rw_destroy(&pThis->Mtx);
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync RTMemFree(pThis);
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync return VINF_SUCCESS;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync}
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsyncRTDECL(int) RTSemFastMutexRequest(RTSEMFASTMUTEX hFastMtx)
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync{
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx;
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync RT_ASSERT_PREEMPTIBLE();
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync rw_enter(&pThis->Mtx, RW_WRITER);
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync return VINF_SUCCESS;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync}
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsyncRTDECL(int) RTSemFastMutexRelease(RTSEMFASTMUTEX hFastMtx)
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync{
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync PRTSEMFASTMUTEXINTERNAL pThis = hFastMtx;
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync AssertMsgReturn(pThis->u32Magic == RTSEMFASTMUTEX_MAGIC, ("%p: u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
9c11b89c71ca727d975c39f2719063501ddcd03dvboxsync RT_ASSERT_INTS_ON();
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync
47c238f82281a3771c8bfb66858da823ecf03dbcvboxsync rw_exit(&pThis->Mtx);
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync return VINF_SUCCESS;
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync}
29bdc01040c07a3dd482a94a2cb8f0a90f8587a7vboxsync