r3/linux/semeventmulti-linux.cpp

9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/* $Id$ */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/** @file
5b281ba489ca18f0380d7efc7a5108b606cce449vboxsync * IPRT - Multiple Release Event Semaphore, Linux (2.6.x+).
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/*
c58f1213e628a545081c70e26c6b67a841cff880vboxsync * Copyright (C) 2006-2012 Oracle Corporation
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync *
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * available from http://www.virtualbox.org. This file is free software;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * you can redistribute it and/or modify it under the terms of the GNU
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * General Public License (GPL) as published by the Free Software
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync *
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * The contents of this file may alternatively be used under the terms
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * of the Common Development and Distribution License Version 1.0
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * VirtualBox OSE distribution, in which case the provisions of the
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * CDDL are applicable instead of those of the GPL.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync *
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * You may elect to license modified versions of this file under the
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * terms and conditions of either the GPL or the CDDL or both.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsync
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsync#include <features.h>
ab93606043a9881487aa83be04191d2f4ea24071vboxsync#if __GLIBC_PREREQ(2,6) && !defined(IPRT_WITH_FUTEX_BASED_SEMS)
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsync
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync/*
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync * glibc 2.6 fixed a serious bug in the mutex implementation. We wrote this
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync * linux specific event semaphores code in order to work around the bug. As it
5981e6935987b08737b730b63a41acc1dd696377vboxsync * turns out, this code seems to have an unresolved issue (@bugref{2599}), so we'll
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync * fall back on the pthread based implementation if glibc is known to contain
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync * the bug fix.
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync *
ad27e1d5e48ca41245120c331cc88b50464813cevboxsync * The external reference to epoll_pwait is a hack which prevents that we link
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync * against glibc < 2.6.
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync */
0a7b20727716a00270f358a1c546473d8c36e8f3vboxsync#include "../posix/semeventmulti-posix.cpp"
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsyncasm volatile (".global epoll_pwait");
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsync
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsync#else /* glibc < 2.6 */
3aad980b92149dd95a1ab72ddb8d11d61a28ace6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/*******************************************************************************
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync*   Header Files                                                               *
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync*******************************************************************************/
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <iprt/semaphore.h>
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#include "internal/iprt.h"
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <iprt/assert.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <iprt/asm.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <iprt/err.h>
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#include <iprt/lockvalidator.h>
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#include <iprt/mem.h>
7ccd30dd4bbced565b32c255a11640cd4093abb6vboxsync#include <iprt/time.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include "internal/magics.h"
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#include "internal/strict.h"
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <errno.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <limits.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <pthread.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <unistd.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <sys/time.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#include <sys/syscall.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#if 0 /* With 2.6.17 futex.h has become C++ unfriendly. */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync# include <linux/futex.h>
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#else
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync# define FUTEX_WAIT 0
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync# define FUTEX_WAKE 1
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#endif
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/*******************************************************************************
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync*   Structures and Typedefs                                                    *
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync*******************************************************************************/
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/**
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * Linux multiple wakup event semaphore.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsyncstruct RTSEMEVENTMULTIINTERNAL
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /** Magic value. */
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    uint32_t volatile   u32Magic;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /** The futex state variable.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * -1 means signaled.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     *  0 means not signaled, no waiters.
d605d5391db09e6395a1c091f148f4b86af84bd3vboxsync     *  1 means not signaled and that someone is waiting.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    int32_t volatile    iState;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    /** Signallers. */
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTLOCKVALRECSHRD    Signallers;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    /** Indicates that lock validation should be performed. */
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    bool volatile       fEverHadSignallers;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync};
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync/**
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync * Wrapper for the futex syscall.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsyncstatic long sys_futex(int32_t volatile *uaddr, int op, int val, struct timespec *utime, int32_t *uaddr2, int val3)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    errno = 0;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    long rc = syscall(__NR_futex, uaddr, op, val, utime, uaddr2, val3);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    if (rc < 0)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    {
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        Assert(rc == -1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        rc = -errno;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    return rc;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiCreate(PRTSEMEVENTMULTI phEventMultiSem)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
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
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Allocate semaphore handle.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = (struct RTSEMEVENTMULTIINTERNAL *)RTMemAlloc(sizeof(struct RTSEMEVENTMULTIINTERNAL));
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    if (pThis)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    {
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync        pThis->u32Magic = RTSEMEVENTMULTI_MAGIC;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync        pThis->iState   = 0;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync        if (!pszNameFmt)
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync        {
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync            static uint32_t volatile s_iSemEventMultiAnon = 0;
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync            RTLockValidatorRecSharedInit(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis,
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync                                         true /*fSignaller*/, !(fFlags & RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL),
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync                                         "RTSemEventMulti-%u", ASMAtomicIncU32(&s_iSemEventMultiAnon) - 1);
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync        }
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync        else
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync        {
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync            va_list va;
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync            va_start(va, pszNameFmt);
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync            RTLockValidatorRecSharedInitV(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis,
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync                                          true /*fSignaller*/, !(fFlags & RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL),
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync                                          pszNameFmt, va);
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync            va_end(va);
2e42e0850e182e37277fe28ba5b5d1c37018e783vboxsync        }
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync        pThis->fEverHadSignallers = false;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
ab93606043a9881487aa83be04191d2f4ea24071vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        *phEventMultiSem = pThis;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    return  VERR_NO_MEMORY;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiDestroy(RTSEMEVENTMULTI hEventMultiSem)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Validate input.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = hEventMultiSem;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    if (pThis == NIL_RTSEMEVENTMULTI)
ab93606043a9881487aa83be04191d2f4ea24071vboxsync        return VINF_SUCCESS;
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    AssertReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, VERR_INVALID_HANDLE);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Invalidate the semaphore and wake up anyone waiting on it.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
81cfcb51c89626fd5d331d92dcec81c94a5e9d2fvboxsync    ASMAtomicWriteU32(&pThis->u32Magic, RTSEMEVENTMULTI_MAGIC + 1);
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    if (ASMAtomicXchgS32(&pThis->iState, -1) == 1)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    {
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync        sys_futex(&pThis->iState, FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        usleep(1000);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Free the semaphore memory and be gone.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTLockValidatorRecSharedDelete(&pThis->Signallers);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    RTMemFree(pThis);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiSignal(RTSEMEVENTMULTI hEventMultiSem)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Validate input.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = hEventMultiSem;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertReturn(VALID_PTR(pThis) && pThis->u32Magic == RTSEMEVENTMULTI_MAGIC,
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                 VERR_INVALID_HANDLE);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    if (pThis->fEverHadSignallers)
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    {
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync        int rc9 = RTLockValidatorRecSharedCheckSignaller(&pThis->Signallers, NIL_RTTHREAD);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync        if (RT_FAILURE(rc9))
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            return rc9;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    }
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Signal it.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    int32_t iOld = ASMAtomicXchgS32(&pThis->iState, -1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    if (iOld > 0)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    {
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        /* wake up sleeping threads. */
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync        long cWoken = sys_futex(&pThis->iState, FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        AssertMsg(cWoken >= 0, ("%ld\n", cWoken)); NOREF(cWoken);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    Assert(iOld == 0 || iOld == -1 || iOld == 1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
ab93606043a9881487aa83be04191d2f4ea24071vboxsyncRTDECL(int)  RTSemEventMultiReset(RTSEMEVENTMULTI hEventMultiSem)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Validate input.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
ab93606043a9881487aa83be04191d2f4ea24071vboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = hEventMultiSem;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertReturn(VALID_PTR(pThis) && pThis->u32Magic == RTSEMEVENTMULTI_MAGIC,
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                 VERR_INVALID_HANDLE);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#ifdef RT_STRICT
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    int32_t i = pThis->iState;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    Assert(i == 0 || i == -1 || i == 1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync#endif
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Reset it.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync    ASMAtomicCmpXchgS32(&pThis->iState, 0, -1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsyncDECLINLINE(int) rtSemEventLnxMultiWait(struct RTSEMEVENTMULTIINTERNAL *pThis, uint32_t fFlags, uint64_t uTimeout,
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                                       PCRTLOCKVALSRCPOS pSrcPos)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync{
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Validate input.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    AssertReturn(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC, VERR_INVALID_HANDLE);
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    AssertReturn(RTSEMWAIT_FLAGS_ARE_VALID(fFlags), VERR_INVALID_PARAMETER);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * Quickly check whether it's signaled.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
8fdb63a0d23d1618724f651b8c3d11be48b44d35vboxsync    int32_t iCur = ASMAtomicUoReadS32(&pThis->iState);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    Assert(iCur == 0 || iCur == -1 || iCur == 1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    if (iCur == -1)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync     * Check and convert the timeout value.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    struct timespec ts;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    struct timespec *pTimeout = NULL;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    uint64_t u64Deadline = 0; /* shut up gcc */
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    if (!(fFlags & RTSEMWAIT_FLAGS_INDEFINITE))
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    {
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync        /* If the timeout is zero, then we're done. */
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync        if (!uTimeout)
d605d5391db09e6395a1c091f148f4b86af84bd3vboxsync            return VERR_TIMEOUT;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync        /* Convert it to a deadline + interval timespec. */
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync        if (fFlags & RTSEMWAIT_FLAGS_MILLISECS)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            uTimeout = uTimeout < UINT64_MAX / UINT32_C(1000000) * UINT32_C(1000000)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                     ? uTimeout * UINT32_C(1000000)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                     : UINT64_MAX;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync        if (uTimeout != UINT64_MAX) /* unofficial way of indicating an indefinite wait */
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync        {
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            if (fFlags & RTSEMWAIT_FLAGS_RELATIVE)
9364fd364e57542419416d69895877915c344826vboxsync                u64Deadline = RTTimeSystemNanoTS() + uTimeout;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            else
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            {
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                uint64_t u64Now = RTTimeSystemNanoTS();
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                if (uTimeout <= u64Now)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                    return VERR_TIMEOUT;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                u64Deadline = uTimeout;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                uTimeout   -= u64Now;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            }
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            if (   sizeof(ts.tv_sec) >= sizeof(uint64_t)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                || uTimeout <= UINT64_C(1000000000) * UINT32_MAX)
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            {
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                ts.tv_nsec = uTimeout % UINT32_C(1000000000);
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                ts.tv_sec  = uTimeout / UINT32_C(1000000000);
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                pTimeout = &ts;
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync            }
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync        }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     * The wait loop.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync     */
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTTHREAD hThreadSelf = RTThreadSelfAutoAdopt();
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#else
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTTHREAD hThreadSelf = RTThreadSelf();
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    for (unsigned i = 0;; i++)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    {
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync         * Start waiting. We only account for there being or having been
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync         * threads waiting on the semaphore to keep things simple.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync         */
8fdb63a0d23d1618724f651b8c3d11be48b44d35vboxsync        iCur = ASMAtomicUoReadS32(&pThis->iState);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        Assert(iCur == 0 || iCur == -1 || iCur == 1);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        if (    iCur == 1
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync            ||  ASMAtomicCmpXchgS32(&pThis->iState, 1, 0))
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        {
7e10aea6606a51d35041e5a85f9e4f1bd19c4062vboxsync            /* adjust the relative timeout */
e190faad3061288ae099cd3ea8a858bd224c00a7vboxsync            if (pTimeout)
7e10aea6606a51d35041e5a85f9e4f1bd19c4062vboxsync            {
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                int64_t i64Diff = u64Deadline - RTTimeSystemNanoTS();
0a79c9258d8fae34fa527f125009ab507561b4edvboxsync                if (i64Diff < 1000)
7e10aea6606a51d35041e5a85f9e4f1bd19c4062vboxsync                    return VERR_TIMEOUT;
259e900197d37d0f84ed72e1d4a4eb6c11b4e301vboxsync                ts.tv_sec  = (uint64_t)i64Diff / UINT32_C(1000000000);
259e900197d37d0f84ed72e1d4a4eb6c11b4e301vboxsync                ts.tv_nsec = (uint64_t)i64Diff % UINT32_C(1000000000);
7e10aea6606a51d35041e5a85f9e4f1bd19c4062vboxsync            }
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            if (pThis->fEverHadSignallers)
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            {
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync                int rc9 = RTLockValidatorRecSharedCheckBlocking(&pThis->Signallers, hThreadSelf, pSrcPos, false,
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                                                                uTimeout / UINT32_C(1000000), RTTHREADSTATE_EVENT_MULTI, true);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync                if (RT_FAILURE(rc9))
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync                    return rc9;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            }
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            RTThreadBlocking(hThreadSelf, RTTHREADSTATE_EVENT_MULTI, true);
89dfdbb56cf9dddad3c7685b41bda1e4e4c1d6f9vboxsync            long rc = sys_futex(&pThis->iState, FUTEX_WAIT, 1, pTimeout, NULL, 0);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            RTThreadUnblocked(hThreadSelf, RTTHREADSTATE_EVENT_MULTI);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync            if (RT_UNLIKELY(pThis->u32Magic != RTSEMEVENTMULTI_MAGIC))
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                return VERR_SEM_DESTROYED;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            if (rc == 0)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            /*
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync             * Act on the wakup code.
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync             */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            if (rc == -ETIMEDOUT)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            {
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync/** @todo something is broken here. shows up every now and again in the ata
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync *        code. Should try to run the timeout against RTTimeMilliTS to
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync *        check that it's doing the right thing... */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                Assert(pTimeout);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                return VERR_TIMEOUT;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            if (rc == -EWOULDBLOCK)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                /* retry, the value changed. */;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            else if (rc == -EINTR)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            {
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                if (fFlags & RTSEMWAIT_FLAGS_NORESUME)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                    return VERR_INTERRUPTED;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            else
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            {
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                /* this shouldn't happen! */
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                AssertMsgFailed(("rc=%ld errno=%d\n", rc, errno));
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync                return RTErrConvertFromErrno(rc);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync        else if (iCur == -1)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync            return VINF_SUCCESS;
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync    }
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync#undef RTSemEventMultiWaitEx
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsyncRTDECL(int)  RTSemEventMultiWaitEx(RTSEMEVENTMULTI hEventMultiSem, uint32_t fFlags, uint64_t uTimeout)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync#ifndef RTSEMEVENT_STRICT
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    return rtSemEventLnxMultiWait(hEventMultiSem, fFlags, uTimeout, NULL);
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync#else
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_NORMAL_API();
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    return rtSemEventLnxMultiWait(hEventMultiSem, fFlags, uTimeout, &SrcPos);
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync#endif
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsyncRTDECL(int)  RTSemEventMultiWaitExDebug(RTSEMEVENTMULTI hEventMultiSem, uint32_t fFlags, uint64_t uTimeout,
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync                                        RTHCUINTPTR uId, RT_SRC_POS_DECL)
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync{
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    RTLOCKVALSRCPOS SrcPos = RTLOCKVALSRCPOS_INIT_DEBUG_API();
68308f6fe3c9a03c39acd9615d767ad0b3b5dcedvboxsync    return rtSemEventLnxMultiWait(hEventMultiSem, fFlags, uTimeout, &SrcPos);
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync}
9e5c26690d45216629b5f588aced8fcfb68c23b6vboxsync
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsyncRTDECL(void) RTSemEventMultiSetSignaller(RTSEMEVENTMULTI hEventMultiSem, RTTHREAD hThread)
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync{
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = hEventMultiSem;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertPtrReturnVoid(pThis);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertReturnVoid(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    ASMAtomicWriteBool(&pThis->fEverHadSignallers, true);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTLockValidatorRecSharedResetOwner(&pThis->Signallers, hThread, NULL);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync}
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsyncRTDECL(void) RTSemEventMultiAddSignaller(RTSEMEVENTMULTI hEventMultiSem, RTTHREAD hThread)
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync{
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = hEventMultiSem;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertPtrReturnVoid(pThis);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertReturnVoid(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    ASMAtomicWriteBool(&pThis->fEverHadSignallers, true);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTLockValidatorRecSharedAddOwner(&pThis->Signallers, hThread, NULL);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync}
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsyncRTDECL(void) RTSemEventMultiRemoveSignaller(RTSEMEVENTMULTI hEventMultiSem, RTTHREAD hThread)
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync{
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#ifdef RTSEMEVENTMULTI_STRICT
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    struct RTSEMEVENTMULTIINTERNAL *pThis = hEventMultiSem;
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertPtrReturnVoid(pThis);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    AssertReturnVoid(pThis->u32Magic == RTSEMEVENTMULTI_MAGIC);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync    RTLockValidatorRecSharedRemoveOwner(&pThis->Signallers, hThread);
8e342a5c34610667d2b554cb86f1dc2f38a5313cvboxsync#endif
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync}
333e7ab9cd83b32080826d06ac7b1951c684ccb5vboxsync
d605d5391db09e6395a1c091f148f4b86af84bd3vboxsync#endif /* glibc < 2.6 || IPRT_WITH_FUTEX_BASED_SEMS */
d605d5391db09e6395a1c091f148f4b86af84bd3vboxsync