semeventmulti-r0drv-freebsd.c revision fea595114d685c0f865a710172df95896f08d47b
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync/* $Id$ */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync/** @file
5b281ba489ca18f0380d7efc7a5108b606cce449vboxsync * IPRT - Multiple Release Event Semaphores, Ring-0 Driver, FreeBSD.
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync/*
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync *
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * Permission is hereby granted, free of charge, to any person
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * obtaining a copy of this software and associated documentation
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * files (the "Software"), to deal in the Software without
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * restriction, including without limitation the rights to use,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * copy, modify, merge, publish, distribute, sublicense, and/or sell
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * copies of the Software, and to permit persons to whom the
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * Software is furnished to do so, subject to the following
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * conditions:
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync *
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * The above copyright notice and this permission notice shall be
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * included in all copies or substantial portions of the Software.
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync *
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * OTHER DEALINGS IN THE SOFTWARE.
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync/*******************************************************************************
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync* Header Files *
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync*******************************************************************************/
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include "the-freebsd-kernel.h"
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include <iprt/semaphore.h>
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include <iprt/alloc.h>
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include <iprt/asm.h>
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include <iprt/assert.h>
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include <iprt/err.h>
fea595114d685c0f865a710172df95896f08d47bvboxsync#include <iprt/spinlock.h>
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync#include "internal/magics.h"
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync/*******************************************************************************
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync* Structures and Typedefs *
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync*******************************************************************************/
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync/**
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync * FreeBSD multiple release event semaphore.
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsynctypedef struct RTSEMEVENTMULTIINTERNAL
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync /** Magic value (RTSEMEVENTMULTI_MAGIC). */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync uint32_t volatile u32Magic;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync /** The number of waiting threads. */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync uint32_t volatile cWaiters;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync /** Set if the event object is signaled. */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync uint8_t volatile fSignaled;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync /** The number of threads in the process of waking up. */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync uint32_t volatile cWaking;
fea595114d685c0f865a710172df95896f08d47bvboxsync /** Spinlock protecting this structure. */
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSPINLOCK hSpinLock;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync} RTSEMEVENTMULTIINTERNAL, *PRTSEMEVENTMULTIINTERNAL;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncRTDECL(int) RTSemEventMultiCreate(PRTSEMEVENTMULTI pEventMultiSem)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync Assert(sizeof(RTSEMEVENTMULTIINTERNAL) > sizeof(void *));
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertPtrReturn(pEventMultiSem, VERR_INVALID_POINTER);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
24b814713d57519124d491243137f551be686c66vboxsync PRTSEMEVENTMULTIINTERNAL pEventMultiInt = (PRTSEMEVENTMULTIINTERNAL)RTMemAllocZ(sizeof(*pEventMultiInt));
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync if (pEventMultiInt)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync pEventMultiInt->u32Magic = RTSEMEVENTMULTI_MAGIC;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync pEventMultiInt->cWaiters = 0;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync pEventMultiInt->cWaking = 0;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync pEventMultiInt->fSignaled = 0;
fea595114d685c0f865a710172df95896f08d47bvboxsync int rc = RTSpinlockCreate(&pEventMultiInt->hSpinLock);
fea595114d685c0f865a710172df95896f08d47bvboxsync if (RT_SUCCESS(rc))
fea595114d685c0f865a710172df95896f08d47bvboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync *pEventMultiSem = pEventMultiInt;
fea595114d685c0f865a710172df95896f08d47bvboxsync return VINF_SUCCESS;
fea595114d685c0f865a710172df95896f08d47bvboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTMemFree(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync return rc;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return VERR_NO_MEMORY;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncRTDECL(int) RTSemEventMultiDestroy(RTSEMEVENTMULTI EventMultiSem)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync if (EventMultiSem == NIL_RTSEMEVENTMULTI) /* don't bitch */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return VERR_INVALID_HANDLE;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync PRTSEMEVENTMULTIINTERNAL pEventMultiInt = (PRTSEMEVENTMULTIINTERNAL)EventMultiSem;
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSPINLOCKTMP Tmp;
fea595114d685c0f865a710172df95896f08d47bvboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertPtrReturn(pEventMultiInt, VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertMsgReturn(pEventMultiInt->u32Magic == RTSEMEVENTMULTI_MAGIC,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ("pEventMultiInt=%p u32Magic=%#x\n", pEventMultiInt, pEventMultiInt->u32Magic),
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockAcquire(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ASMAtomicIncU32(&pEventMultiInt->u32Magic); /* make the handle invalid */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync if (pEventMultiInt->cWaiters > 0)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync /* abort waiting thread, last man cleans up. */
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ASMAtomicXchgU32(&pEventMultiInt->cWaking, pEventMultiInt->cWaking + pEventMultiInt->cWaiters);
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_lock(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_broadcast(pEventMultiInt, SLEEPQ_CONDVAR, 0, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_release(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync else if (pEventMultiInt->cWaking)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync /* the last waking thread is gonna do the cleanup */
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync else
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockDestroy(pEventMultiInt->hSpinLock);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync RTMemFree(pEventMultiInt);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return VINF_SUCCESS;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncRTDECL(int) RTSemEventMultiSignal(RTSEMEVENTMULTI EventMultiSem)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSPINLOCKTMP Tmp;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync PRTSEMEVENTMULTIINTERNAL pEventMultiInt = (PRTSEMEVENTMULTIINTERNAL)EventMultiSem;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertPtrReturn(pEventMultiInt, VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertMsgReturn(pEventMultiInt->u32Magic == RTSEMEVENTMULTI_MAGIC,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ("pEventMultiInt=%p u32Magic=%#x\n", pEventMultiInt, pEventMultiInt->u32Magic),
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockAcquire(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ASMAtomicXchgU8(&pEventMultiInt->fSignaled, true);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync if (pEventMultiInt->cWaiters > 0)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ASMAtomicXchgU32(&pEventMultiInt->cWaking, pEventMultiInt->cWaking + pEventMultiInt->cWaiters);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ASMAtomicXchgU32(&pEventMultiInt->cWaiters, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_lock(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync int fWakeupSwapProc = sleepq_signal(pEventMultiInt, SLEEPQ_CONDVAR, 0, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_release(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync if (fWakeupSwapProc)
fea595114d685c0f865a710172df95896f08d47bvboxsync kick_proc0();
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return VINF_SUCCESS;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncRTDECL(int) RTSemEventMultiReset(RTSEMEVENTMULTI EventMultiSem)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSPINLOCKTMP Tmp;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync PRTSEMEVENTMULTIINTERNAL pEventMultiInt = (PRTSEMEVENTMULTIINTERNAL)EventMultiSem;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertPtrReturn(pEventMultiInt, VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertMsgReturn(pEventMultiInt->u32Magic == RTSEMEVENTMULTI_MAGIC,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ("pEventMultiInt=%p u32Magic=%#x\n", pEventMultiInt, pEventMultiInt->u32Magic),
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockAcquire(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ASMAtomicXchgU8(&pEventMultiInt->fSignaled, false);
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return VINF_SUCCESS;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncstatic int rtSemEventMultiWait(RTSEMEVENTMULTI EventMultiSem, unsigned cMillies, bool fInterruptible)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync int rc;
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSPINLOCKTMP Tmp;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync PRTSEMEVENTMULTIINTERNAL pEventMultiInt = (PRTSEMEVENTMULTIINTERNAL)EventMultiSem;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertPtrReturn(pEventMultiInt, VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync AssertMsgReturn(pEventMultiInt->u32Magic == RTSEMEVENTMULTI_MAGIC,
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync ("pEventMultiInt=%p u32Magic=%#x\n", pEventMultiInt, pEventMultiInt->u32Magic),
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync VERR_INVALID_HANDLE);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockAcquire(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync if (pEventMultiInt->fSignaled)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync rc = VINF_SUCCESS;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync else
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync if (cMillies == 0)
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = VERR_TIMEOUT;
fea595114d685c0f865a710172df95896f08d47bvboxsync else
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync ASMAtomicIncU32(&pEventMultiInt->cWaiters);
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync int fFlags = SLEEPQ_CONDVAR;
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync if (fInterruptible)
fea595114d685c0f865a710172df95896f08d47bvboxsync fFlags |= SLEEPQ_INTERRUPTIBLE;
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_lock(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_add(pEventMultiInt, NULL, "IPRT Event Semaphore", fFlags, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync if (cMillies != RT_INDEFINITE_WAIT)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync /*
fea595114d685c0f865a710172df95896f08d47bvboxsync * Translate milliseconds into ticks and go to sleep.
fea595114d685c0f865a710172df95896f08d47bvboxsync */
fea595114d685c0f865a710172df95896f08d47bvboxsync struct timeval tv;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync tv.tv_sec = cMillies / 1000;
fea595114d685c0f865a710172df95896f08d47bvboxsync tv.tv_usec = (cMillies % 1000) * 1000;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_set_timeout(pEventMultiInt, tvtohz(&tv));
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync if (fInterruptible)
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = sleepq_timedwait_sig(pEventMultiInt, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync else
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = sleepq_timedwait(pEventMultiInt, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync else
fea595114d685c0f865a710172df95896f08d47bvboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync if (fInterruptible)
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = sleepq_wait_sig(pEventMultiInt, 0);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync else
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = 0;
fea595114d685c0f865a710172df95896f08d47bvboxsync sleepq_wait(pEventMultiInt, 0);
fea595114d685c0f865a710172df95896f08d47bvboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockAcquire(pEventMultiInt->hSpinLock, &Tmp);
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync switch (rc)
fea595114d685c0f865a710172df95896f08d47bvboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync case 0:
fea595114d685c0f865a710172df95896f08d47bvboxsync if (pEventMultiInt->u32Magic == RTSEMEVENTMULTI_MAGIC)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync ASMAtomicDecU32(&pEventMultiInt->cWaking);
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = VINF_SUCCESS;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync else
fea595114d685c0f865a710172df95896f08d47bvboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = VERR_SEM_DESTROYED; /** @todo this isn't necessarily correct, we've
fea595114d685c0f865a710172df95896f08d47bvboxsync * could've woken up just before destruction... */
fea595114d685c0f865a710172df95896f08d47bvboxsync if (!ASMAtomicDecU32(&pEventMultiInt->cWaking))
fea595114d685c0f865a710172df95896f08d47bvboxsync {
fea595114d685c0f865a710172df95896f08d47bvboxsync /* The event was destroyed, as the last thread do the cleanup.
fea595114d685c0f865a710172df95896f08d47bvboxsync we don't actually know whether */
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockDestroy(pEventMultiInt->hSpinLock);
fea595114d685c0f865a710172df95896f08d47bvboxsync RTMemFree(pEventMultiInt);
fea595114d685c0f865a710172df95896f08d47bvboxsync return rc;
fea595114d685c0f865a710172df95896f08d47bvboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync }
fea595114d685c0f865a710172df95896f08d47bvboxsync break;
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync case EWOULDBLOCK:
fea595114d685c0f865a710172df95896f08d47bvboxsync Assert(cMillies != RT_INDEFINITE_WAIT);
fea595114d685c0f865a710172df95896f08d47bvboxsync if (pEventMultiInt->cWaiters > 0)
fea595114d685c0f865a710172df95896f08d47bvboxsync ASMAtomicDecU32(&pEventMultiInt->cWaiters);
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = VERR_TIMEOUT;
fea595114d685c0f865a710172df95896f08d47bvboxsync break;
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync case EINTR:
fea595114d685c0f865a710172df95896f08d47bvboxsync case ERESTART:
fea595114d685c0f865a710172df95896f08d47bvboxsync Assert(fInterruptible);
fea595114d685c0f865a710172df95896f08d47bvboxsync if (pEventMultiInt->cWaiters > 0)
fea595114d685c0f865a710172df95896f08d47bvboxsync ASMAtomicDecU32(&pEventMultiInt->cWaiters);
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = VERR_INTERRUPTED;
fea595114d685c0f865a710172df95896f08d47bvboxsync break;
fea595114d685c0f865a710172df95896f08d47bvboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync default:
fea595114d685c0f865a710172df95896f08d47bvboxsync AssertMsgFailed(("sleepq_* -> %d\n", rc));
fea595114d685c0f865a710172df95896f08d47bvboxsync rc = VERR_GENERAL_FAILURE;
fea595114d685c0f865a710172df95896f08d47bvboxsync break;
fea595114d685c0f865a710172df95896f08d47bvboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync }
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
fea595114d685c0f865a710172df95896f08d47bvboxsync RTSpinlockRelease(pEventMultiInt->hSpinLock, &Tmp);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return rc;
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncRTDECL(int) RTSemEventMultiWait(RTSEMEVENTMULTI EventMultiSem, unsigned cMillies)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return rtSemEventMultiWait(EventMultiSem, cMillies, false /* not interruptible */);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsyncRTDECL(int) RTSemEventMultiWaitNoResume(RTSEMEVENTMULTI EventMultiSem, unsigned cMillies)
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync{
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync return rtSemEventMultiWait(EventMultiSem, cMillies, true /* interruptible */);
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync}
1f1986470af9f0bb750dd859b142dc2e952deb20vboxsync