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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c | |
parent | Initial commit. (diff) | |
download | virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip |
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c b/src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c new file mode 100644 index 00000000..fae92994 --- /dev/null +++ b/src/VBox/Runtime/r0drv/haiku/spinlock-r0drv-haiku.c @@ -0,0 +1,148 @@ +/* $Id: spinlock-r0drv-haiku.c $ */ +/** @file + * IPRT - Spinlocks, Ring-0 Driver, Haiku. + */ + +/* + * Copyright (C) 2012-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "the-haiku-kernel.h" +#include "internal/iprt.h" +#include <iprt/spinlock.h> + +#include <iprt/assert.h> +#include <iprt/asm.h> +#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) +#include <iprt/asm-amd64-x86.h> +#endif +#include <iprt/errcore.h> +#include <iprt/mem.h> +#include <iprt/thread.h> + +#include "internal/magics.h" + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +/** + * Wrapper for the KSPIN_LOCK type. + */ +typedef struct RTSPINLOCKINTERNAL +{ + /** Spinlock magic value (RTSPINLOCK_MAGIC). */ + uint32_t volatile u32Magic; + /** Spinlock creation flags */ + uint32_t fFlags; + /** Saved interrupt CPU status. */ + cpu_status volatile fIntSaved; + /** The Haiku spinlock structure. */ + spinlock hSpinLock; +} RTSPINLOCKINTERNAL, *PRTSPINLOCKINTERNAL; + + + +RTDECL(int) RTSpinlockCreate(PRTSPINLOCK pSpinlock, uint32_t fFlags, const char *pszName) +{ + RT_ASSERT_PREEMPTIBLE(); + NOREF(pszName); + + /* + * Allocate. + */ + AssertCompile(sizeof(RTSPINLOCKINTERNAL) > sizeof(void *)); + PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)RTMemAllocZ(sizeof(*pSpinlockInt)); + if (RT_UNLIKELY(!pSpinlockInt)) + return VERR_NO_MEMORY; + + /* + * Initialize & return. + */ + pSpinlockInt->u32Magic = RTSPINLOCK_MAGIC; + pSpinlockInt->fFlags = fFlags; + pSpinlockInt->fIntSaved = 0; + B_INITIALIZE_SPINLOCK(&pSpinlockInt->hSpinLock); + + *pSpinlock = pSpinlockInt; + return VINF_SUCCESS; +} + + +RTDECL(int) RTSpinlockDestroy(RTSPINLOCK Spinlock) +{ + /* + * Validate input. + */ + PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock; + if (RT_UNLIKELY(!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); + + B_INITIALIZE_SPINLOCK(&pSpinlockInt->hSpinLock); + + RTMemFree(pSpinlockInt); + return VINF_SUCCESS; +} + + +RTDECL(void) RTSpinlockAcquire(RTSPINLOCK Spinlock) +{ + PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock; + AssertPtr(pSpinlockInt); + Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC); + + /* Haiku cannot take spinlocks without disabling interrupts. Ignore our spinlock creation flags. */ + pSpinlockInt->fIntSaved = disable_interrupts(); + acquire_spinlock(&pSpinlockInt->hSpinLock); +} + + +RTDECL(void) RTSpinlockRelease(RTSPINLOCK Spinlock) +{ + PRTSPINLOCKINTERNAL pSpinlockInt = (PRTSPINLOCKINTERNAL)Spinlock; + AssertPtr(pSpinlockInt); + Assert(pSpinlockInt->u32Magic == RTSPINLOCK_MAGIC); + + release_spinlock(&pSpinlockInt->hSpinLock); + restore_interrupts(pSpinlockInt->fIntSaved); +} + |