diff options
Diffstat (limited to '')
-rw-r--r-- | src/VBox/Runtime/include/internal/mp.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/VBox/Runtime/include/internal/mp.h b/src/VBox/Runtime/include/internal/mp.h new file mode 100644 index 00000000..d5aa0fea --- /dev/null +++ b/src/VBox/Runtime/include/internal/mp.h @@ -0,0 +1,95 @@ +/* $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 */ + |