r0drv/os2/semeventmulti-r0drv-os2.cpp

d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync/* $Id$ */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync/** @file
5b281ba489ca18f0380d7efc7a5108b606cce449vboxsync * IPRT - Multiple Release Event Semaphores, Ring-0 Driver, OS/2.
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync/*
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync *
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * Permission is hereby granted, free of charge, to any person
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * obtaining a copy of this software and associated documentation
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * files (the "Software"), to deal in the Software without
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * restriction, including without limitation the rights to use,
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * copy, modify, merge, publish, distribute, sublicense, and/or sell
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * copies of the Software, and to permit persons to whom the
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * Software is furnished to do so, subject to the following
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * conditions:
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync *
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * The above copyright notice and this permission notice shall be
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * included in all copies or substantial portions of the Software.
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync *
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * OTHER DEALINGS IN THE SOFTWARE.
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync/*******************************************************************************
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync*   Header Files                                                               *
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync*******************************************************************************/
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync#include "the-os2-kernel.h"
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync#include "internal/iprt.h"
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync#include <iprt/semaphore.h>
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync#include <iprt/asm.h>
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync#include <iprt/assert.h>
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync#include <iprt/err.h>
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync#include <iprt/lockvalidator.h>
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync#include <iprt/mem.h>
881b5ff6bc55e1fb0f4ef42f9782ccec79c0a138vboxsync#include "internal/magics.h"
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync/*******************************************************************************
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync*   Structures and Typedefs                                                    *
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync*******************************************************************************/
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync/**
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync * OS/2 multiple release event semaphore.
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsynctypedef struct RTSEMEVENTMULTIINTERNAL
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    /** Magic value (RTSEMEVENTMULTI_MAGIC). */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    uint32_t volatile   u32Magic;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    /** The number of waiting threads. */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    uint32_t volatile   cWaiters;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    /** Set if the event object is signaled. */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    uint8_t volatile    fSignaled;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    /** The number of threads in the process of waking up. */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    uint32_t volatile   cWaking;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    /** The OS/2 spinlock protecting this structure. */
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    SpinLock_t          Spinlock;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync} RTSEMEVENTMULTIINTERNAL, *PRTSEMEVENTMULTIINTERNAL;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiCreate(PRTSEMEVENTMULTI phEventMultiSem)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    return RTSemEventMultiCreateEx(phEventMultiSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, NULL);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync}
ab93606043a9881487aa83be04191d2f4ea24071vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiCreateEx(PRTSEMEVENTMULTI phEventMultiSem, uint32_t fFlags, RTLOCKVALCLASS hClass,
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                                     const char *pszNameFmt, ...)
ab93606043a9881487aa83be04191d2f4ea24071vboxsync{
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertReturn(!(fFlags & ~RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL), VERR_INVALID_PARAMETER);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertPtrReturn(phEventMultiSem, VERR_INVALID_POINTER);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertCompile(sizeof(RTSEMEVENTMULTIINTERNAL) > sizeof(void *));
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)RTMemAlloc(sizeof(*pThis));
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    if (pThis)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    {
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        pThis->u32Magic = RTSEMEVENTMULTI_MAGIC;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        pThis->cWaiters = 0;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        pThis->cWaking = 0;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        pThis->fSignaled = 0;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernAllocSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        *phEventMultiSem = pThis;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        return VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    }
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    return VERR_NO_MEMORY;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiDestroy(RTSEMEVENTMULTI hEventMultiSem)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)hEventMultiSem;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    if (pThis == NIL_RTSEMEVENTMULTI)
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        return VINF_SUCCESS;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, ("pThis=%p u32Magic=%#x\n", pThis, pThis->u32Magic), VERR_INVALID_HANDLE);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernAcquireSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    ASMAtomicIncU32(&pThis->u32Magic); /* make the handle invalid */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    if (pThis->cWaiters > 0)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    {
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        /* abort waiting thread, last man cleans up. */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        ASMAtomicXchgU32(&pThis->cWaking, pThis->cWaking + pThis->cWaiters);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        ULONG cThreads;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernWakeup((ULONG)pThis, WAKEUP_DATA | WAKEUP_BOOST, &cThreads, (ULONG)VERR_SEM_DESTROYED);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernReleaseSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    }
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    else if (pThis->cWaking)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        /* the last waking thread is gonna do the cleanup */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernReleaseSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    else
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    {
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernReleaseSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernFreeSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        RTMemFree(pThis);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    }
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    return VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiSignal(RTSEMEVENTMULTI hEventMultiSem)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)hEventMultiSem;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC,
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    ("pThis=%p u32Magic=%#x\n", pThis, pThis->u32Magic),
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                    VERR_INVALID_HANDLE);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernAcquireSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    ASMAtomicXchgU8(&pThis->fSignaled, true);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    if (pThis->cWaiters > 0)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    {
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        ASMAtomicXchgU32(&pThis->cWaking, pThis->cWaking + pThis->cWaiters);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        ASMAtomicXchgU32(&pThis->cWaiters, 0);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        ULONG cThreads;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        KernWakeup((ULONG)pThis, WAKEUP_DATA, &cThreads, VINF_SUCCESS);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    }
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernReleaseSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    return VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiReset(RTSEMEVENTMULTI hEventMultiSem)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    PRTSEMEVENTMULTIINTERNAL pThis = (PRTSEMEVENTMULTIINTERNAL)hEventMultiSem;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC,
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    ("pThis=%p u32Magic=%#x\n", pThis, pThis->u32Magic),
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                    VERR_INVALID_HANDLE);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernAcquireSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    ASMAtomicXchgU8(&pThis->fSignaled, false);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernReleaseSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    return VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync/**
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync * Worker for RTSemEventWaitEx and RTSemEventWaitExDebug.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync *
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync * @returns VBox status code.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync * @param   pThis           The event semaphore.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync * @param   fFlags          See RTSemEventWaitEx.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync * @param   uTimeout        See RTSemEventWaitEx.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync * @param   pSrcPos         The source code position of the wait.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync */
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsyncstatic int rtR0SemEventMultiOs2Wait(PRTSEMEVENTMULTIINTERNAL pThis, uint32_t fFlags, uint64_t uTimeout,
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync                                    PCRTLOCKVALSRCPOS pSrcPos)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    /*
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync     * Validate and convert the input.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync     */
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    if (!pThis)
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync        return VERR_INVALID_HANDLE;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertMsgReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC,
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    ("pThis=%p u32Magic=%#x\n", pThis, pThis->u32Magic),
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                    VERR_INVALID_HANDLE);
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    AssertReturn(RTSEMWAIT_FLAGS_ARE_VALID(fFlags), VERR_INVALID_PARAMETER);
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    ULONG cMsTimeout = rtR0SemWaitOs2ConvertTimeout(fFlags, uTimeout);
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    ULONG fBlock     = BLOCK_SPINLOCK;
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    if (!(fFlags & RTSEMWAIT_FLAGS_INTERRUPTIBLE))
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync        fBlock |= BLOCK_UNINTERRUPTABLE;
64eea8161bef2aa3c6516481383c830bca27abfevboxsync
64eea8161bef2aa3c6516481383c830bca27abfevboxsync    /*
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync     * Do the job.
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync     */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernAcquireSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    int rc;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    if (pThis->fSignaled)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        rc = VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    else
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    {
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        ASMAtomicIncU32(&pThis->cWaiters);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        ULONG ulData = (ULONG)VERR_INTERNAL_ERROR;
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync        rc = KernBlock((ULONG)pThis, cMsTimeout, fBlock,
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                       &pThis->Spinlock,
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                       &ulData);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        switch (rc)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        {
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync            case NO_ERROR:
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                rc = (int)ulData;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                Assert(rc == VINF_SUCCESS || rc == VERR_SEM_DESTROYED);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                Assert(pThis->cWaking > 0);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                if (    !ASMAtomicDecU32(&pThis->cWaking)
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    &&  pThis->u32Magic != RTSEMEVENTMULTI_MAGIC)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                {
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                    /* The event was destroyed (ulData == VINF_SUCCESS if it was after we awoke), as
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                       the last thread do the cleanup. */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    KernReleaseSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    KernFreeSpinLock(&pThis->Spinlock);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                    RTMemFree(pThis);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                    return VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                }
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                rc = VINF_SUCCESS;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                break;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync            case ERROR_TIMEOUT:
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync                Assert(cMsTimeout != SEM_INDEFINITE_WAIT);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                ASMAtomicDecU32(&pThis->cWaiters);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                rc = VERR_TIMEOUT;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                break;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync            case ERROR_INTERRUPT:
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync                Assert(fFlags & RTSEMWAIT_FLAGS_INTERRUPTIBLE);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync                ASMAtomicDecU32(&pThis->cWaiters);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                rc = VERR_INTERRUPTED;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                break;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync            default:
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                AssertMsgFailed(("rc=%d\n", rc));
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                rc = VERR_GENERAL_FAILURE;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync                break;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync        }
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    }
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    KernReleaseSpinLock(&pThis->Spinlock);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync    return rc;
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsyncRTDECL(int)  RTSemEventMultiWaitEx(RTSEMEVENTMULTI hEventMultiSem, uint32_t fFlags, uint64_t uTimeout)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync#ifndef RTSEMEVENT_STRICT
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    return rtR0SemEventMultiOs2Wait(hEventMultiSem, fFlags, uTimeout, NULL);
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync#else
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API();
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    return rtR0SemEventMultiOs2Wait(hEventMultiSem, fFlags, uTimeout, &SrcPos);
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync#endif
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsyncRTDECL(int)  RTSemEventMultiWaitExDebug(RTSEMEVENTMULTI hEventMultiSem, uint32_t fFlags, uint64_t uTimeout,
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync                                        RTHCUINTPTR uId, RT_SRC_POS_DECL)
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync{
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
4eb60291a3736df8e5c706848a0c5dfa75a5814fvboxsync    return rtR0SemEventMultiOs2Wait(hEventMultiSem, fFlags, uTimeout, &SrcPos);
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync}
d1c5a03c19683c719b94496bb998fde2f2e5e622vboxsync
e0e7da0420be1398d23ffa9953686d3a43619abdvboxsync
e0e7da0420be1398d23ffa9953686d3a43619abdvboxsyncRTDECL(uint32_t) RTSemEventMultiGetResolution(void)
e0e7da0420be1398d23ffa9953686d3a43619abdvboxsync{
e0e7da0420be1398d23ffa9953686d3a43619abdvboxsync    return 32000000; /* 32ms */
e0e7da0420be1398d23ffa9953686d3a43619abdvboxsync}
e0e7da0420be1398d23ffa9953686d3a43619abdvboxsync