summaryrefslogtreecommitdiffstats
path: root/src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
commitf8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch)
tree26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c
parentInitial commit. (diff)
downloadvirtualbox-upstream.tar.xz
virtualbox-upstream.zip
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c')
-rw-r--r--src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c b/src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c
new file mode 100644
index 00000000..dc68d1b7
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/haiku/semfastmutex-r0drv-haiku.c
@@ -0,0 +1,120 @@
+/* $Id: semfastmutex-r0drv-haiku.c $ */
+/** @file
+ * IPRT - Fast Mutex Semaphores, Ring-0 Driver, Haiku.
+ */
+
+/*
+ * Copyright (C) 2012-2019 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-haiku-kernel.h"
+
+#include <iprt/semaphore.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 Haiku (sleep) mutex.
+ */
+typedef struct RTSEMFASTMUTEXINTERNAL
+{
+ /** Magic value (RTSEMFASTMUTEX_MAGIC). */
+ uint32_t u32Magic;
+ /** A good old Benaphore. */
+ vint32 BenId;
+ sem_id SemId;
+} RTSEMFASTMUTEXINTERNAL, *PRTSEMFASTMUTEXINTERNAL;
+
+
+RTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX phFastMtx)
+{
+ AssertCompile(sizeof(RTSEMFASTMUTEXINTERNAL) > sizeof(void *));
+ AssertPtrReturn(phFastMtx, VERR_INVALID_POINTER);
+
+ PRTSEMFASTMUTEXINTERNAL pThis = (PRTSEMFASTMUTEXINTERNAL)RTMemAllocZ(sizeof(*pThis));
+ if (RT_UNLIKELY(!pThis))
+ return VERR_NO_MEMORY;
+
+ pThis->u32Magic = RTSEMFASTMUTEX_MAGIC;
+ pThis->BenId = 0;
+ pThis->SemId = create_sem(0, "IPRT Fast Mutex Semaphore");
+ if (pThis->SemId >= B_OK)
+ {
+ *phFastMtx = pThis;
+ return VINF_SUCCESS;
+ }
+ RTMemFree(pThis);
+ return VERR_TOO_MANY_SEMAPHORES; /** @todo r=ramshankar: use RTErrConvertFromHaikuKernReturn */
+}
+
+
+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);
+
+ ASMAtomicWriteU32(&pThis->u32Magic, RTSEMFASTMUTEX_MAGIC_DEAD);
+ delete_sem(pThis->SemId);
+ 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);
+
+ if (atomic_add(&pThis->BenId, 1) > 0)
+ acquire_sem(pThis->SemId);
+
+ 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);
+
+ if (atomic_add(&pThis->BenId, -1) > 1)
+ release_sem(pThis->SemId);
+
+ return VINF_SUCCESS;
+}
+