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/* $Id: mp.h $ */
/** @file
* IPRT - Internal RTMp header
*/
/*
* Copyright (C) 2016-2023 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_INTERNAL_mp_h
#define IPRT_INCLUDED_INTERNAL_mp_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/assert.h>
#include <iprt/mp.h>
RT_C_DECLS_BEGIN
#ifdef RT_OS_WINDOWS
/** @todo Return the processor group + number instead.
* Unfortunately, DTrace and HM makes the impossible for the time being as it
* seems to be making the stupid assumption that idCpu == iCpuSet. */
#if 0
# define IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
#endif
# ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
/** @def RTMPCPUID_FROM_GROUP_AND_NUMBER
* Creates the RTCPUID value.
*
* @remarks We Increment a_uGroup by 1 to make sure the ID is never the same as
* the CPU set index.
*
* @remarks We put the group in the top to make it easy to construct the MAX ID.
* For that reason we also just use 8 bits for the processor number, as
* it keeps the range small.
*/
# define RTMPCPUID_FROM_GROUP_AND_NUMBER(a_uGroup, a_uGroupMember) \
( (uint8_t)(a_uGroupMember) | (((uint32_t)(a_uGroup) + 1) << 8) )
/** Extracts the group number from a RTCPUID value. */
DECLINLINE(uint16_t) rtMpCpuIdGetGroup(RTCPUID idCpu)
{
Assert(idCpu != NIL_RTCPUID);
uint16_t idxGroup = idCpu >> 8;
Assert(idxGroup != 0);
return idxGroup - 1;
}
/** Extracts the group member number from a RTCPUID value. */
DECLINLINE(uint8_t) rtMpCpuIdGetGroupMember(RTCPUID idCpu)
{
Assert(idCpu != NIL_RTCPUID);
return (uint8_t)idCpu;
}
# endif /* IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER */
#endif /* RT_OS_WINDOWS */
RT_C_DECLS_END
#endif /* !IPRT_INCLUDED_INTERNAL_mp_h */
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