Current File : //usr/src/vboxhost-7.0.26/vboxdrv/r0drv/mp-r0drv.h
/* $Id: mp-r0drv.h 155244 2023-01-17 14:15:46Z bird $ */
/** @file
* IPRT - Multiprocessor, Ring-0 Driver, Internal Header.
*/
/*
* Copyright (C) 2008-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef IPRT_INCLUDED_SRC_r0drv_mp_r0drv_h
#define IPRT_INCLUDED_SRC_r0drv_mp_r0drv_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/mp.h>
RT_C_DECLS_BEGIN
/**
* MP callback
*
* @param idCpu CPU id
* @param pvUser1 The first user argument.
* @param pvUser2 The second user argument.
*/
typedef DECLCALLBACKTYPE(void, FNMPWORKER,(RTCPUID idCpu, void *pvUser1, void *pvUser2));
/** Pointer to a FNMPWORKER(). */
typedef FNMPWORKER *PFNMPWORKER;
/**
* RTMpOn* argument packet used by the host specific callback
* wrapper functions.
*/
typedef struct RTMPARGS
{
PFNMPWORKER pfnWorker;
void *pvUser1;
void *pvUser2;
RTCPUID idCpu;
RTCPUID idCpu2;
uint32_t volatile cHits;
#ifdef RT_OS_WINDOWS
/** Turns out that KeFlushQueuedDpcs doesn't necessarily wait till all
* callbacks are done. So, do reference counting to make sure we don't free
* this structure befor all CPUs have completely handled their requests. */
int32_t volatile cRefs;
#endif
#ifdef RT_OS_LINUX
PRTCPUSET pWorkerSet;
#endif
} RTMPARGS;
/** Pointer to a RTMpOn* argument packet. */
typedef RTMPARGS *PRTMPARGS;
/* Called from initterm-r0drv.cpp: */
DECLHIDDEN(int) rtR0MpNotificationInit(void);
DECLHIDDEN(void) rtR0MpNotificationTerm(void);
/* The following is only relevant when using mpnotifcation-r0drv.cpp: */
DECLHIDDEN(int) rtR0MpNotificationNativeInit(void);
DECLHIDDEN(void) rtR0MpNotificationNativeTerm(void);
DECLHIDDEN(void) rtMpNotificationDoCallbacks(RTMPEVENT enmEvent, RTCPUID idCpu);
RT_C_DECLS_END
#endif /* !IPRT_INCLUDED_SRC_r0drv_mp_r0drv_h */
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