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-rw-r--r--src/VBox/Runtime/r0drv/haiku/semevent-r0drv-haiku.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/haiku/semevent-r0drv-haiku.c b/src/VBox/Runtime/r0drv/haiku/semevent-r0drv-haiku.c
new file mode 100644
index 00000000..2af59535
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/haiku/semevent-r0drv-haiku.c
@@ -0,0 +1,264 @@
+/* $Id: semevent-r0drv-haiku.c $ */
+/** @file
+ * IPRT - Single Release Event 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 "internal/iprt.h"
+#include <iprt/semaphore.h>
+
+#include <iprt/asm.h>
+#include <iprt/assert.h>
+#include <iprt/err.h>
+#include <iprt/lockvalidator.h>
+#include <iprt/mem.h>
+
+#include "internal/magics.h"
+
+
+/*********************************************************************************************************************************
+* Structures and Typedefs *
+*********************************************************************************************************************************/
+/**
+ * Haiku event semaphore.
+ */
+typedef struct RTSEMEVENTINTERNAL
+{
+ /** Magic value (RTSEMEVENT_MAGIC). */
+ uint32_t volatile u32Magic;
+ /** Reference counter. */
+ uint32_t volatile cRefs;
+ /** The semaphore Id. */
+ sem_id SemId;
+} RTSEMEVENTINTERNAL, *PRTSEMEVENTINTERNAL;
+
+
+RTDECL(int) RTSemEventCreate(PRTSEMEVENT phEventSem)
+{
+ return RTSemEventCreateEx(phEventSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, NULL);
+}
+
+
+RTDECL(int) RTSemEventCreateEx(PRTSEMEVENT phEventSem, uint32_t fFlags, RTLOCKVALCLASS hClass, const char *pszNameFmt, ...)
+{
+ AssertCompile(sizeof(RTSEMEVENTINTERNAL) > sizeof(void *));
+ AssertReturn(!(fFlags & ~(RTSEMEVENT_FLAGS_NO_LOCK_VAL | RTSEMEVENT_FLAGS_BOOTSTRAP_HACK)), VERR_INVALID_PARAMETER);
+ Assert(!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK) || (fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL));
+ AssertPtrReturn(phEventSem, VERR_INVALID_POINTER);
+
+ PRTSEMEVENTINTERNAL pThis = (PRTSEMEVENTINTERNAL)RTMemAllocZ(sizeof(*pThis));
+ if (!pThis)
+ return VERR_NO_MEMORY;
+
+ pThis->u32Magic = RTSEMEVENT_MAGIC;
+ pThis->cRefs = 1;
+ pThis->SemId = create_sem(0, "IPRT Semaphore Event");
+ if (pThis->SemId >= B_OK)
+ {
+ set_sem_owner(pThis->SemId, B_SYSTEM_TEAM);
+ *phEventSem = pThis;
+ return VINF_SUCCESS;
+ }
+
+ RTMemFree(pThis);
+ return VERR_TOO_MANY_SEMAPHORES; /** @todo r=ramshankar: use RTErrConvertFromHaikuKernReturn */
+}
+
+
+/**
+ * Retains a reference to the event semaphore.
+ *
+ * @param pThis The event semaphore.
+ */
+DECLINLINE(void) rtR0SemEventHkuRetain(PRTSEMEVENTINTERNAL pThis)
+{
+ uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
+ Assert(cRefs < 100000); NOREF(cRefs);
+}
+
+
+/**
+ * Releases a reference to the event semaphore.
+ *
+ * @param pThis The event semaphore.
+ */
+DECLINLINE(void) rtR0SemEventHkuRelease(PRTSEMEVENTINTERNAL pThis)
+{
+ if (RT_UNLIKELY(ASMAtomicDecU32(&pThis->cRefs) == 0))
+ RTMemFree(pThis);
+}
+
+
+RTDECL(int) RTSemEventDestroy(RTSEMEVENT hEventSem)
+{
+ /*
+ * Validate input.
+ */
+ PRTSEMEVENTINTERNAL pThis = hEventSem;
+ if (pThis == NIL_RTSEMEVENT)
+ return VINF_SUCCESS;
+ AssertMsgReturn(pThis->u32Magic == RTSEMEVENT_MAGIC, ("pThis->u32Magic=%RX32 pThis=%p\n", pThis->u32Magic, pThis), VERR_INVALID_HANDLE);
+ Assert(pThis->cRefs > 0);
+
+ /*
+ * Invalidate it and delete the semaphore to unblock everyone.
+ */
+ ASMAtomicWriteU32(&pThis->u32Magic, ~RTSEMEVENT_MAGIC);
+ delete_sem(pThis->SemId);
+ pThis->SemId = -1;
+ rtR0SemEventHkuRelease(pThis);
+ return VINF_SUCCESS;
+}
+
+
+RTDECL(int) RTSemEventSignal(RTSEMEVENT hEventSem)
+{
+ /*
+ * Validate input.
+ */
+ PRTSEMEVENTINTERNAL pThis = (PRTSEMEVENTINTERNAL)hEventSem;
+ AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
+ AssertMsgReturn(pThis->u32Magic == RTSEMEVENT_MAGIC, ("pThis->u32Magic=%RX32 pThis=%p\n", pThis->u32Magic, pThis), VERR_INVALID_HANDLE);
+ rtR0SemEventHkuRetain(pThis);
+
+ /*
+ * Signal the event object.
+ * We must use B_DO_NOT_RESCHEDULE since we are being used from an irq handler.
+ */
+ release_sem_etc(pThis->SemId, 1, B_DO_NOT_RESCHEDULE);
+ rtR0SemEventHkuRelease(pThis);
+ return VINF_SUCCESS;
+}
+
+
+/**
+ * Worker for RTSemEventWaitEx and RTSemEventWaitExDebug.
+ *
+ * @returns VBox status code.
+ * @param pThis The event semaphore.
+ * @param fFlags See RTSemEventWaitEx.
+ * @param uTimeout See RTSemEventWaitEx.
+ * @param pSrcPos The source code position of the wait.
+ */
+static int rtR0SemEventWait(PRTSEMEVENTINTERNAL pThis, uint32_t fFlags, uint64_t uTimeout,
+ PCRTLOCKVALSRCPOS pSrcPos)
+{
+ status_t status;
+ int rc;
+ int32 flags = 0;
+ bigtime_t timeout; /* in microseconds */
+
+ /*
+ * Validate the input.
+ */
+ AssertPtrReturn(pThis, VERR_INVALID_PARAMETER);
+ AssertMsgReturn(pThis->u32Magic == RTSEMEVENT_MAGIC, ("%p u32Magic=%RX32\n", pThis, pThis->u32Magic), VERR_INVALID_PARAMETER);
+ AssertReturn(RTSEMWAIT_FLAGS_ARE_VALID(fFlags), VERR_INVALID_PARAMETER);
+
+ if (fFlags & RTSEMWAIT_FLAGS_INDEFINITE)
+ timeout = B_INFINITE_TIMEOUT;
+ else
+ {
+ if (fFlags & RTSEMWAIT_FLAGS_NANOSECS)
+ timeout = uTimeout / 1000;
+ else if (fFlags & RTSEMWAIT_FLAGS_MILLISECS)
+ timeout = uTimeout * 1000;
+ else
+ return VERR_INVALID_PARAMETER;
+
+ if (fFlags & RTSEMWAIT_FLAGS_RELATIVE)
+ flags |= B_RELATIVE_TIMEOUT;
+ else if (fFlags & RTSEMWAIT_FLAGS_ABSOLUTE)
+ flags |= B_ABSOLUTE_TIMEOUT;
+ else
+ return VERR_INVALID_PARAMETER;
+ }
+
+ if (fFlags & RTSEMWAIT_FLAGS_INTERRUPTIBLE)
+ flags |= B_CAN_INTERRUPT;
+ // likely not:
+ //else
+ // flags |= B_KILL_CAN_INTERRUPT;
+
+ rtR0SemEventHkuRetain(pThis);
+
+ status = acquire_sem_etc(pThis->SemId, 1, flags, timeout);
+
+ switch (status)
+ {
+ case B_OK:
+ rc = VINF_SUCCESS;
+ break;
+ case B_BAD_SEM_ID:
+ rc = VERR_SEM_DESTROYED;
+ break;
+ case B_INTERRUPTED:
+ rc = VERR_INTERRUPTED;
+ break;
+ case B_WOULD_BLOCK:
+ /* fallthrough ? */
+ case B_TIMED_OUT:
+ rc = VERR_TIMEOUT;
+ break;
+ default:
+ rc = RTErrConvertFromHaikuKernReturn(status);
+ break;
+ }
+
+ rtR0SemEventHkuRelease(pThis);
+ return rc;
+}
+
+
+RTDECL(int) RTSemEventWaitEx(RTSEMEVENT hEventSem, uint32_t fFlags, uint64_t uTimeout)
+{
+#ifndef RTSEMEVENT_STRICT
+ return rtR0SemEventWait(hEventSem, fFlags, uTimeout, NULL);
+#else
+ RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API();
+ return rtR0SemEventWait(hEventSem, fFlags, uTimeout, &SrcPos);
+#endif
+}
+RT_EXPORT_SYMBOL(RTSemEventWaitEx);
+
+
+RTDECL(int) RTSemEventWaitExDebug(RTSEMEVENT hEventSem, uint32_t fFlags, uint64_t uTimeout,
+ RTHCUINTPTR uId, RT_SRC_POS_DECL)
+{
+ RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
+ return rtR0SemEventWait(hEventSem, fFlags, uTimeout, &SrcPos);
+}
+RT_EXPORT_SYMBOL(RTSemEventWaitExDebug);
+
+
+RTDECL(uint32_t) RTSemEventGetResolution(void)
+{
+ /* At least that's what the API supports. */
+ return 1000;
+}
+
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