spinlock-r0drv-solaris.c revision 5b281ba489ca18f0380d7efc7a5108b606cce449
/* $Id$ */
/** @file
* IPRT - Spinlocks, Ring-0 Driver, Solaris.
*/
/*
* Copyright (C) 2006-2007 Sun Microsystems, Inc.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include "the-solaris-kernel.h"
#include <iprt/spinlock.h>
#include <iprt/err.h>
#include <iprt/alloc.h>
#include <iprt/assert.h>
#include <iprt/asm.h>
#include "internal/magics.h"
/*******************************************************************************
* Structures and Typedefs *
*******************************************************************************/
/**
* Wrapper for the struct mutex type.
*/
typedef struct RTSPINLOCKINTERNAL
{
/** Spinlock magic value (RTSPINLOCK_MAGIC). */
uint32_t volatile u32Magic;
/** A Solaris spinlock. */
kmutex_t Mtx;
} RTSPINLOCKINTERNAL, *PRTSPINLOCKINTERNAL;
RTDECL(int) RTSpinlockCreate(PRTSPINLOCK pSpinlock)
{
/*
* Allocate.
*/
AssertCompile(sizeof(RTSPINLOCKINTERNAL) > sizeof(void *));
PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)RTMemAlloc(sizeof(*pSpinlockInt));
if (!pSpinlockInt)
return VERR_NO_MEMORY;
/*
* Initialize & return.
*/
pSpinlockInt->u32Magic = RTSPINLOCK_MAGIC;
mutex_init(&pSpinlockInt->Mtx, "IPRT Spinlock", MUTEX_DRIVER, NULL);
*pSpinlock = pSpinlockInt;
return VINF_SUCCESS;
}
RTDECL(int) RTSpinlockDestroy(RTSPINLOCK Spinlock)
{
/*
* Validate input.
*/
PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
if (!pSpinlockInt)
return VERR_INVALID_PARAMETER;
AssertMsgReturn(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC,
("Invalid spinlock %p magic=%#x\n", pSpinlockInt, pSpinlockInt->u32Magic),
VERR_INVALID_PARAMETER);
/*
* Make the lock invalid and release the memory.
*/
ASMAtomicIncU32(&pSpinlockInt->u32Magic);
mutex_destroy(&pSpinlockInt->Mtx);
RTMemFree(pSpinlockInt);
return VINF_SUCCESS;
}
RTDECL(void) RTSpinlockAcquireNoInts(RTSPINLOCK Spinlock, PRTSPINLOCKTMP pTmp)
{
PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
AssertPtr(pSpinlockInt);
Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC);
NOREF(pTmp);
mutex_enter(&pSpinlockInt->Mtx);
}
RTDECL(void) RTSpinlockReleaseNoInts(RTSPINLOCK Spinlock, PRTSPINLOCKTMP pTmp)
{
PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
AssertPtr(pSpinlockInt);
Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC);
NOREF(pTmp);
mutex_exit(&pSpinlockInt->Mtx);
}
RTDECL(void) RTSpinlockAcquire(RTSPINLOCK Spinlock, PRTSPINLOCKTMP pTmp)
{
PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
AssertPtr(pSpinlockInt);
Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC);
NOREF(pTmp);
mutex_enter(&pSpinlockInt->Mtx);
}
RTDECL(void) RTSpinlockRelease(RTSPINLOCK Spinlock, PRTSPINLOCKTMP pTmp)
{
PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock;
AssertPtr(pSpinlockInt);
Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC);
NOREF(pTmp);
mutex_exit(&pSpinlockInt->Mtx);
}