1 | /* $Id: mp-win.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Multiprocessor, Windows.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #define LOG_GROUP RTLOGGROUP_SYSTEM
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42 | #include <iprt/win/windows.h>
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43 |
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44 | #include <iprt/mp.h>
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45 | #include "internal/iprt.h"
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46 |
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47 | #include <iprt/alloca.h>
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48 | #include <iprt/assert.h>
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49 | #include <iprt/cpuset.h>
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50 | #include <iprt/ldr.h>
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51 | #include <iprt/mem.h>
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52 | #include <iprt/once.h>
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53 | #include <iprt/param.h>
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54 | #if defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)
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55 | # include <iprt/asm-amd64-x86.h>
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56 | #endif
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57 | #if defined(VBOX) && !defined(IN_GUEST) && !defined(IN_RT_STATIC)
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58 | # include <VBox/sup.h>
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59 | # define IPRT_WITH_GIP_MP_INFO
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60 | #else
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61 | # undef IPRT_WITH_GIP_MP_INFO
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62 | #endif
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63 |
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64 | #include "internal-r3-win.h"
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65 |
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66 |
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67 | /*********************************************************************************************************************************
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68 | * Defined Constants And Macros *
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69 | *********************************************************************************************************************************/
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70 | /** @def RTMPWIN_UPDATE_GIP_GLOBALS
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71 | * Does lazy (re-)initialization using information provieded by GIP. */
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72 | #ifdef IPRT_WITH_GIP_MP_INFO
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73 | # define RTMPWIN_UPDATE_GIP_GLOBALS() \
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74 | do { RTMPWIN_UPDATE_GIP_GLOBALS_AND_GET_PGIP(); } while (0)
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75 | #else
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76 | # define RTMPWIN_UPDATE_GIP_GLOBALS() do { } while (0)
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77 | #endif
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78 |
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79 | /** @def RTMPWIN_UPDATE_GIP_GLOBALS_AND_GET_PGIP
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80 | * Does lazy (re-)initialization using information provieded by GIP and
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81 | * declare and initalize a pGip local variable. */
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82 | #ifdef IPRT_WITH_GIP_MP_INFO
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83 | #define RTMPWIN_UPDATE_GIP_GLOBALS_AND_GET_PGIP() \
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84 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage; \
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85 | if (pGip) \
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86 | { \
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87 | if ( pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC \
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88 | && RTOnce(&g_MpInitOnceGip, rtMpWinInitOnceGip, NULL) == VINF_SUCCESS) \
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89 | { \
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90 | if (g_cRtMpWinActiveCpus >= pGip->cOnlineCpus) \
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91 | { /* likely */ } \
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92 | else \
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93 | rtMpWinRefreshGip(); \
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94 | } \
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95 | else \
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96 | pGip = NULL; \
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97 | } else do { } while (0)
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98 | #else
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99 | # define RTMPWIN_UPDATE_GIP_GLOBALS_AND_GET_PGIP() do { } while (0)
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100 | #endif
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101 |
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102 |
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103 | /*********************************************************************************************************************************
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104 | * Global Variables *
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105 | *********************************************************************************************************************************/
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106 | /** Initialize once. */
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107 | static RTONCE g_MpInitOnce = RTONCE_INITIALIZER;
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108 | #ifdef IPRT_WITH_GIP_MP_INFO
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109 | /** Initialize once using GIP. */
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110 | static RTONCE g_MpInitOnceGip = RTONCE_INITIALIZER;
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111 | #endif
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112 |
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113 | static decltype(GetMaximumProcessorCount) *g_pfnGetMaximumProcessorCount;
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114 | //static decltype(GetActiveProcessorCount) *g_pfnGetActiveProcessorCount;
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115 | static decltype(GetCurrentProcessorNumber) *g_pfnGetCurrentProcessorNumber;
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116 | static decltype(GetCurrentProcessorNumberEx) *g_pfnGetCurrentProcessorNumberEx;
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117 | static decltype(GetLogicalProcessorInformation) *g_pfnGetLogicalProcessorInformation;
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118 | static decltype(GetLogicalProcessorInformationEx) *g_pfnGetLogicalProcessorInformationEx;
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119 |
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120 |
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121 | /** The required buffer size for getting group relations. */
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122 | static uint32_t g_cbRtMpWinGrpRelBuf;
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123 | /** The max number of CPUs (RTMpGetCount). */
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124 | static uint32_t g_cRtMpWinMaxCpus;
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125 | /** The max number of CPU cores (RTMpGetCoreCount). */
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126 | static uint32_t g_cRtMpWinMaxCpuCores;
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127 | /** The max number of groups. */
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128 | static uint32_t g_cRtMpWinMaxCpuGroups;
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129 | /** The number of active CPUs the last time we checked. */
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130 | static uint32_t volatile g_cRtMpWinActiveCpus;
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131 | /** Static per group info.
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132 | * @remarks With 256 entries this takes up 33KB.
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133 | * @sa g_aRtMpNtCpuGroups */
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134 | static struct
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135 | {
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136 | /** The max CPUs in the group. */
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137 | uint16_t cMaxCpus;
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138 | /** The number of active CPUs at the time of initialization. */
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139 | uint16_t cActiveCpus;
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140 | /** CPU set indexes for each CPU in the group. */
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141 | int16_t aidxCpuSetMembers[64];
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142 | } g_aRtMpWinCpuGroups[256];
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143 | /** Maps CPU set indexes to RTCPUID.
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144 | * @sa g_aidRtMpNtByCpuSetIdx */
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145 | RTCPUID g_aidRtMpWinByCpuSetIdx[RTCPUSET_MAX_CPUS];
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146 |
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147 |
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148 | /**
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149 | * @callback_method_impl{FNRTONCE,
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150 | * Resolves dynamic imports and initializes globals.}
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151 | */
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152 | static DECLCALLBACK(int32_t) rtMpWinInitOnce(void *pvUser)
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153 | {
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154 | RT_NOREF(pvUser);
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155 |
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156 | Assert(g_WinOsInfoEx.dwOSVersionInfoSize != 0);
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157 | Assert(g_hModKernel32 != NULL);
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158 |
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159 | /*
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160 | * Resolve dynamic APIs.
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161 | */
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162 | #define RESOLVE_API(a_szMod, a_FnName) \
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163 | do { \
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164 | RT_CONCAT(g_pfn,a_FnName) = (decltype(a_FnName) *)GetProcAddress(g_hModKernel32, #a_FnName); \
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165 | } while (0)
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166 | RESOLVE_API("kernel32.dll", GetMaximumProcessorCount);
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167 | //RESOLVE_API("kernel32.dll", GetActiveProcessorCount); - slow :/
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168 | RESOLVE_API("kernel32.dll", GetCurrentProcessorNumber);
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169 | RESOLVE_API("kernel32.dll", GetCurrentProcessorNumberEx);
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170 | RESOLVE_API("kernel32.dll", GetLogicalProcessorInformation);
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171 | RESOLVE_API("kernel32.dll", GetLogicalProcessorInformationEx);
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172 |
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173 | /*
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174 | * Reset globals.
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175 | */
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176 | for (unsigned i = 0; i < RT_ELEMENTS(g_aidRtMpWinByCpuSetIdx); i++)
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177 | g_aidRtMpWinByCpuSetIdx[i] = NIL_RTCPUID;
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178 | for (unsigned idxGroup = 0; idxGroup < RT_ELEMENTS(g_aRtMpWinCpuGroups); idxGroup++)
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179 | {
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180 | g_aRtMpWinCpuGroups[idxGroup].cMaxCpus = 0;
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181 | g_aRtMpWinCpuGroups[idxGroup].cActiveCpus = 0;
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182 | for (unsigned idxMember = 0; idxMember < RT_ELEMENTS(g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers); idxMember++)
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183 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = -1;
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184 | }
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185 |
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186 | /*
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187 | * Query group information, partitioning CPU IDs and CPU set indexes.
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188 | *
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189 | * We ASSUME the GroupInfo index is the same as the group number.
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190 | *
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191 | * We CANNOT ASSUME that the kernel CPU indexes are assigned in any given
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192 | * way, though they usually are in group order by active processor. So,
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193 | * we do that to avoid trouble. We must use information provided thru GIP
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194 | * if we want the kernel CPU set indexes. Even there, the inactive CPUs
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195 | * wont have sensible indexes. Sigh.
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196 | *
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197 | * We try to assign IDs to inactive CPUs in the same manner as mp-r0drv-nt.cpp
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198 | *
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199 | * Note! We will die (AssertFatal) if there are too many processors!
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200 | */
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201 | union
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202 | {
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203 | SYSTEM_INFO SysInfo;
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204 | SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX Info;
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205 | uint8_t abPaddingG[ sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX)
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206 | + sizeof(PROCESSOR_GROUP_INFO) * 256];
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207 | uint8_t abPaddingC[ sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX)
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208 | + (sizeof(PROCESSOR_RELATIONSHIP) + sizeof(GROUP_AFFINITY))
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209 | * RTCPUSET_MAX_CPUS];
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210 | } uBuf;
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211 | if (g_pfnGetLogicalProcessorInformationEx)
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212 | {
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213 | /* Query the information. */
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214 | DWORD cbData = sizeof(uBuf);
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215 | AssertFatalMsg(g_pfnGetLogicalProcessorInformationEx(RelationGroup, &uBuf.Info, &cbData) != FALSE,
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216 | ("last error = %u, cbData = %u (in %u)\n", GetLastError(), cbData, sizeof(uBuf)));
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217 | AssertFatalMsg(uBuf.Info.Relationship == RelationGroup,
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218 | ("Relationship = %u, expected %u!\n", uBuf.Info.Relationship, RelationGroup));
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219 | AssertFatalMsg(uBuf.Info.Group.MaximumGroupCount <= RT_ELEMENTS(g_aRtMpWinCpuGroups),
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220 | ("MaximumGroupCount is %u, we only support up to %u!\n",
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221 | uBuf.Info.Group.MaximumGroupCount, RT_ELEMENTS(g_aRtMpWinCpuGroups)));
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222 |
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223 | AssertMsg(uBuf.Info.Group.MaximumGroupCount == uBuf.Info.Group.ActiveGroupCount, /* 2nd assumption mentioned above. */
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224 | ("%u vs %u\n", uBuf.Info.Group.MaximumGroupCount, uBuf.Info.Group.ActiveGroupCount));
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225 | AssertFatal(uBuf.Info.Group.MaximumGroupCount >= uBuf.Info.Group.ActiveGroupCount);
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226 |
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227 | g_cRtMpWinMaxCpuGroups = uBuf.Info.Group.MaximumGroupCount;
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228 |
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229 | /* Count max cpus (see mp-r0drv0-nt.cpp) why we don't use GetMaximumProcessorCount(ALL). */
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230 | uint32_t idxGroup;
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231 | g_cRtMpWinMaxCpus = 0;
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232 | for (idxGroup = 0; idxGroup < uBuf.Info.Group.ActiveGroupCount; idxGroup++)
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233 | g_cRtMpWinMaxCpus += uBuf.Info.Group.GroupInfo[idxGroup].MaximumProcessorCount;
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234 |
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235 | /* Process the active groups. */
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236 | uint32_t cActive = 0;
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237 | uint32_t cInactive = 0;
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238 | uint32_t idxCpu = 0;
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239 | uint32_t idxCpuSetNextInactive = g_cRtMpWinMaxCpus - 1;
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240 | for (idxGroup = 0; idxGroup < uBuf.Info.Group.ActiveGroupCount; idxGroup++)
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241 | {
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242 | PROCESSOR_GROUP_INFO const *pGroupInfo = &uBuf.Info.Group.GroupInfo[idxGroup];
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243 | g_aRtMpWinCpuGroups[idxGroup].cMaxCpus = pGroupInfo->MaximumProcessorCount;
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244 | g_aRtMpWinCpuGroups[idxGroup].cActiveCpus = pGroupInfo->ActiveProcessorCount;
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245 | for (uint32_t idxMember = 0; idxMember < pGroupInfo->MaximumProcessorCount; idxMember++)
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246 | {
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247 | if (pGroupInfo->ActiveProcessorMask & RT_BIT_64(idxMember))
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248 | {
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249 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = idxCpu;
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250 | g_aidRtMpWinByCpuSetIdx[idxCpu] = idxCpu;
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251 | idxCpu++;
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252 | cActive++;
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253 | }
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254 | else
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255 | {
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256 | if (idxCpuSetNextInactive >= idxCpu)
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257 | {
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258 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = idxCpuSetNextInactive;
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259 | g_aidRtMpWinByCpuSetIdx[idxCpuSetNextInactive] = idxCpuSetNextInactive;
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260 | idxCpuSetNextInactive--;
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261 | }
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262 | cInactive++;
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263 | }
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264 | }
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265 | }
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266 | g_cRtMpWinActiveCpus = cActive;
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267 | Assert(cActive + cInactive <= g_cRtMpWinMaxCpus);
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268 | Assert(idxCpu <= idxCpuSetNextInactive + 1);
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269 | Assert(idxCpu <= g_cRtMpWinMaxCpus);
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270 |
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271 | /* Just in case the 2nd assumption doesn't hold true and there are inactive groups. */
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272 | for (; idxGroup < uBuf.Info.Group.MaximumGroupCount; idxGroup++)
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273 | {
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274 | DWORD cMaxMembers = g_pfnGetMaximumProcessorCount(idxGroup);
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275 | g_aRtMpWinCpuGroups[idxGroup].cMaxCpus = cMaxMembers;
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276 | g_aRtMpWinCpuGroups[idxGroup].cActiveCpus = 0;
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277 | for (uint32_t idxMember = 0; idxMember < cMaxMembers; idxMember++)
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278 | {
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279 | if (idxCpuSetNextInactive >= idxCpu)
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280 | {
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281 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = idxCpuSetNextInactive;
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282 | g_aidRtMpWinByCpuSetIdx[idxCpuSetNextInactive] = idxCpuSetNextInactive;
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283 | idxCpuSetNextInactive--;
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284 | }
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285 | cInactive++;
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286 | }
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287 | }
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288 | Assert(cActive + cInactive <= g_cRtMpWinMaxCpus);
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289 | Assert(idxCpu <= idxCpuSetNextInactive + 1);
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290 | }
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291 | else
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292 | {
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293 | /* Legacy: */
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294 | GetSystemInfo(&uBuf.SysInfo);
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295 | g_cRtMpWinMaxCpuGroups = 1;
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296 | g_cRtMpWinMaxCpus = uBuf.SysInfo.dwNumberOfProcessors;
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297 | g_aRtMpWinCpuGroups[0].cMaxCpus = uBuf.SysInfo.dwNumberOfProcessors;
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298 | g_aRtMpWinCpuGroups[0].cActiveCpus = uBuf.SysInfo.dwNumberOfProcessors;
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299 |
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300 | for (uint32_t idxMember = 0; idxMember < uBuf.SysInfo.dwNumberOfProcessors; idxMember++)
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301 | {
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302 | g_aRtMpWinCpuGroups[0].aidxCpuSetMembers[idxMember] = idxMember;
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303 | g_aidRtMpWinByCpuSetIdx[idxMember] = idxMember;
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304 | }
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305 | }
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306 |
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307 | AssertFatalMsg(g_cRtMpWinMaxCpus <= RTCPUSET_MAX_CPUS,
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308 | ("g_cRtMpWinMaxCpus=%u (%#x); RTCPUSET_MAX_CPUS=%u\n", g_cRtMpWinMaxCpus, g_cRtMpWinMaxCpus, RTCPUSET_MAX_CPUS));
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309 |
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310 | g_cbRtMpWinGrpRelBuf = sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX)
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311 | + (g_cRtMpWinMaxCpuGroups + 2) * sizeof(PROCESSOR_GROUP_INFO);
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312 |
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313 | /*
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314 | * Get information about cores.
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315 | *
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316 | * Note! This will only give us info about active processors according to
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317 | * MSDN, we'll just have to hope that CPUs aren't hotplugged after we
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318 | * initialize here (or that the API consumers doesn't care too much).
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319 | */
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320 | /** @todo A hot CPU plug event would be nice. */
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321 | g_cRtMpWinMaxCpuCores = g_cRtMpWinMaxCpus;
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322 | if (g_pfnGetLogicalProcessorInformationEx)
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323 | {
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324 | /* Query the information. */
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325 | DWORD cbData = sizeof(uBuf);
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326 | AssertFatalMsg(g_pfnGetLogicalProcessorInformationEx(RelationProcessorCore, &uBuf.Info, &cbData) != FALSE,
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327 | ("last error = %u, cbData = %u (in %u)\n", GetLastError(), cbData, sizeof(uBuf)));
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328 | g_cRtMpWinMaxCpuCores = 0;
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329 | for (uint32_t off = 0; off < cbData; )
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330 | {
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331 | SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *pCur = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)&uBuf.abPaddingG[off];
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332 | AssertFatalMsg(pCur->Relationship == RelationProcessorCore,
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333 | ("off = %#x, Relationship = %u, expected %u!\n", off, pCur->Relationship, RelationProcessorCore));
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334 | g_cRtMpWinMaxCpuCores++;
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335 | off += pCur->Size;
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336 | }
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337 |
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338 | #if ARCH_BITS == 32
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339 | if (g_cRtMpWinMaxCpuCores > g_cRtMpWinMaxCpus)
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340 | {
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341 | /** @todo WOW64 trouble where the emulation environment has folded the high
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342 | * processor masks (63..32) into the low (31..0), hiding some
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343 | * processors from us. Currently we don't deal with that. */
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344 | g_cRtMpWinMaxCpuCores = g_cRtMpWinMaxCpus;
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345 | }
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346 | else
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347 | AssertStmt(g_cRtMpWinMaxCpuCores > 0, g_cRtMpWinMaxCpuCores = g_cRtMpWinMaxCpus);
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348 | #else
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349 | AssertStmt(g_cRtMpWinMaxCpuCores > 0 && g_cRtMpWinMaxCpuCores <= g_cRtMpWinMaxCpus,
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350 | g_cRtMpWinMaxCpuCores = g_cRtMpWinMaxCpus);
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351 | #endif
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352 | }
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353 | else
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354 | {
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355 | /*
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356 | * Sadly, on XP and Server 2003, even if the API is present, it does not tell us
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357 | * how many physical cores there are (any package will look like a single core).
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358 | * That is worse than not using the API at all, so just skip it unless it's Vista+.
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359 | */
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360 | if ( g_pfnGetLogicalProcessorInformation
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361 | && g_WinOsInfoEx.dwPlatformId == VER_PLATFORM_WIN32_NT
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362 | && g_WinOsInfoEx.dwMajorVersion >= 6)
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363 | {
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364 | /* Query the info. */
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365 | DWORD cbSysProcInfo = _4K;
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366 | PSYSTEM_LOGICAL_PROCESSOR_INFORMATION paSysInfo = NULL;
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367 | BOOL fRc = FALSE;
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368 | do
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369 | {
|
---|
370 | cbSysProcInfo = RT_ALIGN_32(cbSysProcInfo, 256);
|
---|
371 | void *pv = RTMemRealloc(paSysInfo, cbSysProcInfo);
|
---|
372 | if (!pv)
|
---|
373 | break;
|
---|
374 | paSysInfo = (PSYSTEM_LOGICAL_PROCESSOR_INFORMATION)pv;
|
---|
375 | fRc = g_pfnGetLogicalProcessorInformation(paSysInfo, &cbSysProcInfo);
|
---|
376 | } while (!fRc && GetLastError() == ERROR_INSUFFICIENT_BUFFER);
|
---|
377 | if (fRc)
|
---|
378 | {
|
---|
379 | /* Count the cores in the result. */
|
---|
380 | g_cRtMpWinMaxCpuCores = 0;
|
---|
381 | uint32_t i = cbSysProcInfo / sizeof(paSysInfo[0]);
|
---|
382 | while (i-- > 0)
|
---|
383 | if (paSysInfo[i].Relationship == RelationProcessorCore)
|
---|
384 | g_cRtMpWinMaxCpuCores++;
|
---|
385 |
|
---|
386 | AssertStmt(g_cRtMpWinMaxCpuCores > 0 && g_cRtMpWinMaxCpuCores <= g_cRtMpWinMaxCpus,
|
---|
387 | g_cRtMpWinMaxCpuCores = g_cRtMpWinMaxCpus);
|
---|
388 | }
|
---|
389 | RTMemFree(paSysInfo);
|
---|
390 | }
|
---|
391 | }
|
---|
392 |
|
---|
393 | return VINF_SUCCESS;
|
---|
394 | }
|
---|
395 |
|
---|
396 |
|
---|
397 | #ifdef IPRT_WITH_GIP_MP_INFO
|
---|
398 | /**
|
---|
399 | * @callback_method_impl{FNRTONCE, Updates globals with information from GIP.}
|
---|
400 | */
|
---|
401 | static DECLCALLBACK(int32_t) rtMpWinInitOnceGip(void *pvUser)
|
---|
402 | {
|
---|
403 | RT_NOREF(pvUser);
|
---|
404 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
405 |
|
---|
406 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
|
---|
407 | if ( pGip
|
---|
408 | && pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC)
|
---|
409 | {
|
---|
410 | /*
|
---|
411 | * Update globals.
|
---|
412 | */
|
---|
413 | if (g_cRtMpWinMaxCpus != pGip->cPossibleCpus)
|
---|
414 | g_cRtMpWinMaxCpus = pGip->cPossibleCpus;
|
---|
415 | if (g_cRtMpWinActiveCpus != pGip->cOnlineCpus)
|
---|
416 | g_cRtMpWinActiveCpus = pGip->cOnlineCpus;
|
---|
417 | Assert(g_cRtMpWinMaxCpuGroups == pGip->cPossibleCpuGroups);
|
---|
418 | if (g_cRtMpWinMaxCpuGroups != pGip->cPossibleCpuGroups)
|
---|
419 | {
|
---|
420 | g_cRtMpWinMaxCpuGroups = pGip->cPossibleCpuGroups;
|
---|
421 | g_cbRtMpWinGrpRelBuf = sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX)
|
---|
422 | + (g_cRtMpWinMaxCpuGroups + 2) * sizeof(PROCESSOR_GROUP_INFO);
|
---|
423 | }
|
---|
424 |
|
---|
425 | /*
|
---|
426 | * Update CPU set IDs.
|
---|
427 | */
|
---|
428 | for (unsigned i = g_cRtMpWinMaxCpus; i < RT_ELEMENTS(g_aidRtMpWinByCpuSetIdx); i++)
|
---|
429 | g_aidRtMpWinByCpuSetIdx[i] = NIL_RTCPUID;
|
---|
430 |
|
---|
431 | unsigned const cbGip = pGip->cPages * PAGE_SIZE;
|
---|
432 | for (uint32_t idxGroup = 0; idxGroup < g_cRtMpWinMaxCpuGroups; idxGroup++)
|
---|
433 | {
|
---|
434 | uint32_t idxMember;
|
---|
435 | uint32_t offCpuGroup = pGip->aoffCpuGroup[idxGroup];
|
---|
436 | if (offCpuGroup < cbGip)
|
---|
437 | {
|
---|
438 | PSUPGIPCPUGROUP pGipCpuGrp = (PSUPGIPCPUGROUP)((uintptr_t)pGip + offCpuGroup);
|
---|
439 | uint32_t cMaxMembers = pGipCpuGrp->cMaxMembers;
|
---|
440 | AssertStmt(cMaxMembers <= RT_ELEMENTS(g_aRtMpWinCpuGroups[0].aidxCpuSetMembers),
|
---|
441 | cMaxMembers = RT_ELEMENTS(g_aRtMpWinCpuGroups[0].aidxCpuSetMembers));
|
---|
442 | g_aRtMpWinCpuGroups[idxGroup].cMaxCpus = cMaxMembers;
|
---|
443 | g_aRtMpWinCpuGroups[idxGroup].cActiveCpus = RT_MIN(pGipCpuGrp->cMembers, cMaxMembers);
|
---|
444 |
|
---|
445 | for (idxMember = 0; idxMember < cMaxMembers; idxMember++)
|
---|
446 | {
|
---|
447 | int16_t idxSet = pGipCpuGrp->aiCpuSetIdxs[idxMember];
|
---|
448 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = idxSet;
|
---|
449 | if ((unsigned)idxSet < RT_ELEMENTS(g_aidRtMpWinByCpuSetIdx))
|
---|
450 | # ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
|
---|
451 | g_aidRtMpWinByCpuSetIdx[idxSet] = RTMPCPUID_FROM_GROUP_AND_NUMBER(idxGroup, idxMember);
|
---|
452 | # else
|
---|
453 | g_aidRtMpWinByCpuSetIdx[idxSet] = idxSet;
|
---|
454 | # endif
|
---|
455 | }
|
---|
456 | }
|
---|
457 | else
|
---|
458 | idxMember = 0;
|
---|
459 | for (; idxMember < RT_ELEMENTS(g_aRtMpWinCpuGroups[0].aidxCpuSetMembers); idxMember++)
|
---|
460 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = -1;
|
---|
461 | }
|
---|
462 | }
|
---|
463 |
|
---|
464 | return VINF_SUCCESS;
|
---|
465 | }
|
---|
466 |
|
---|
467 |
|
---|
468 | /**
|
---|
469 | * Refreshes globals from GIP after one or more CPUs were added.
|
---|
470 | *
|
---|
471 | * There are potential races here. We might race other threads and we may race
|
---|
472 | * more CPUs being added.
|
---|
473 | */
|
---|
474 | static void rtMpWinRefreshGip(void)
|
---|
475 | {
|
---|
476 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
|
---|
477 | if ( pGip
|
---|
478 | && pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC)
|
---|
479 | {
|
---|
480 | /*
|
---|
481 | * Since CPUs cannot be removed, we only have to update the IDs and
|
---|
482 | * indexes of CPUs that we think are inactive and the group member counts.
|
---|
483 | */
|
---|
484 | for (;;)
|
---|
485 | {
|
---|
486 | unsigned const cbGip = pGip->cPages * PAGE_SIZE;
|
---|
487 | uint32_t const cGipActiveCpus = pGip->cOnlineCpus;
|
---|
488 | uint32_t const cMyActiveCpus = ASMAtomicReadU32(&g_cRtMpWinActiveCpus);
|
---|
489 | ASMCompilerBarrier();
|
---|
490 |
|
---|
491 | for (uint32_t idxGroup = 0; idxGroup < g_cRtMpWinMaxCpuGroups; idxGroup++)
|
---|
492 | {
|
---|
493 | uint32_t offCpuGroup = pGip->aoffCpuGroup[idxGroup];
|
---|
494 | if (offCpuGroup < cbGip)
|
---|
495 | {
|
---|
496 | PSUPGIPCPUGROUP pGipCpuGrp = (PSUPGIPCPUGROUP)((uintptr_t)pGip + offCpuGroup);
|
---|
497 | uint32_t cMaxMembers = pGipCpuGrp->cMaxMembers;
|
---|
498 | AssertStmt(cMaxMembers <= RT_ELEMENTS(g_aRtMpWinCpuGroups[0].aidxCpuSetMembers),
|
---|
499 | cMaxMembers = RT_ELEMENTS(g_aRtMpWinCpuGroups[0].aidxCpuSetMembers));
|
---|
500 | for (uint32_t idxMember = g_aRtMpWinCpuGroups[idxGroup].cActiveCpus; idxMember < cMaxMembers; idxMember++)
|
---|
501 | {
|
---|
502 | int16_t idxSet = pGipCpuGrp->aiCpuSetIdxs[idxMember];
|
---|
503 | g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember] = idxSet;
|
---|
504 | if ((unsigned)idxSet < RT_ELEMENTS(g_aidRtMpWinByCpuSetIdx))
|
---|
505 | # ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
|
---|
506 | g_aidRtMpWinByCpuSetIdx[idxSet] = RTMPCPUID_FROM_GROUP_AND_NUMBER(idxGroup, idxMember);
|
---|
507 | # else
|
---|
508 | g_aidRtMpWinByCpuSetIdx[idxSet] = idxSet;
|
---|
509 | # endif
|
---|
510 | }
|
---|
511 | g_aRtMpWinCpuGroups[idxGroup].cMaxCpus = RT_MIN(pGipCpuGrp->cMembers, cMaxMembers);
|
---|
512 | g_aRtMpWinCpuGroups[idxGroup].cActiveCpus = RT_MIN(pGipCpuGrp->cMembers, cMaxMembers);
|
---|
513 | }
|
---|
514 | else
|
---|
515 | Assert(g_aRtMpWinCpuGroups[idxGroup].cActiveCpus == 0);
|
---|
516 | }
|
---|
517 |
|
---|
518 | ASMCompilerBarrier();
|
---|
519 | if (cGipActiveCpus == pGip->cOnlineCpus)
|
---|
520 | if (ASMAtomicCmpXchgU32(&g_cRtMpWinActiveCpus, cGipActiveCpus, cMyActiveCpus))
|
---|
521 | break;
|
---|
522 | }
|
---|
523 | }
|
---|
524 | }
|
---|
525 |
|
---|
526 | #endif /* IPRT_WITH_GIP_MP_INFO */
|
---|
527 |
|
---|
528 |
|
---|
529 | /*
|
---|
530 | * Conversion between CPU ID and set index.
|
---|
531 | */
|
---|
532 |
|
---|
533 | RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu)
|
---|
534 | {
|
---|
535 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
536 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
537 |
|
---|
538 | #ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
|
---|
539 | if (idCpu != NIL_RTCPUID)
|
---|
540 | return RTMpSetIndexFromCpuGroupMember(rtMpCpuIdGetGroup(idCpu), rtMpCpuIdGetGroupMember(idCpu));
|
---|
541 | return -1;
|
---|
542 |
|
---|
543 | #else
|
---|
544 | /* 1:1 mapping, just do range checking. */
|
---|
545 | return idCpu < g_cRtMpWinMaxCpus ? idCpu : -1;
|
---|
546 | #endif
|
---|
547 | }
|
---|
548 |
|
---|
549 |
|
---|
550 | RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu)
|
---|
551 | {
|
---|
552 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
553 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
554 |
|
---|
555 | if ((unsigned)iCpu < RT_ELEMENTS(g_aidRtMpWinByCpuSetIdx))
|
---|
556 | {
|
---|
557 | RTCPUID idCpu = g_aidRtMpWinByCpuSetIdx[iCpu];
|
---|
558 |
|
---|
559 | #if defined(IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER) && defined(RT_STRICT)
|
---|
560 | /* Check the correctness of the mapping table. */
|
---|
561 | RTCPUID idCpuGip = NIL_RTCPUID;
|
---|
562 | if ( pGip
|
---|
563 | && (unsigned)iCpu < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx))
|
---|
564 | {
|
---|
565 | unsigned idxSupCpu = pGip->aiCpuFromCpuSetIdx[idxGuess];
|
---|
566 | if (idxSupCpu < pGip->cCpus)
|
---|
567 | if (pGip->aCPUs[idxSupCpu].enmState != SUPGIPCPUSTATE_INVALID)
|
---|
568 | idCpuGip = pGip->aCPUs[idxSupCpu].idCpu;
|
---|
569 | }
|
---|
570 | AssertMsg(idCpu == idCpuGip, ("table:%#x gip:%#x\n", idCpu, idCpuGip));
|
---|
571 | #endif
|
---|
572 |
|
---|
573 | return idCpu;
|
---|
574 | }
|
---|
575 | return NIL_RTCPUID;
|
---|
576 | }
|
---|
577 |
|
---|
578 |
|
---|
579 | RTDECL(int) RTMpSetIndexFromCpuGroupMember(uint32_t idxGroup, uint32_t idxMember)
|
---|
580 | {
|
---|
581 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
582 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
583 |
|
---|
584 | if (idxGroup < g_cRtMpWinMaxCpuGroups)
|
---|
585 | if (idxMember < g_aRtMpWinCpuGroups[idxGroup].cMaxCpus)
|
---|
586 | return g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember];
|
---|
587 | return -1;
|
---|
588 | }
|
---|
589 |
|
---|
590 |
|
---|
591 | RTDECL(uint32_t) RTMpGetCpuGroupCounts(uint32_t idxGroup, uint32_t *pcActive)
|
---|
592 | {
|
---|
593 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
594 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
595 |
|
---|
596 | if (idxGroup < g_cRtMpWinMaxCpuGroups)
|
---|
597 | {
|
---|
598 | if (pcActive)
|
---|
599 | *pcActive = g_aRtMpWinCpuGroups[idxGroup].cActiveCpus;
|
---|
600 | return g_aRtMpWinCpuGroups[idxGroup].cMaxCpus;
|
---|
601 | }
|
---|
602 | if (pcActive)
|
---|
603 | *pcActive = 0;
|
---|
604 | return 0;
|
---|
605 | }
|
---|
606 |
|
---|
607 |
|
---|
608 | RTDECL(uint32_t) RTMpGetMaxCpuGroupCount(void)
|
---|
609 | {
|
---|
610 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
611 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
612 |
|
---|
613 | return g_cRtMpWinMaxCpuGroups;
|
---|
614 | }
|
---|
615 |
|
---|
616 |
|
---|
617 |
|
---|
618 | /*
|
---|
619 | * Get current CPU.
|
---|
620 | */
|
---|
621 |
|
---|
622 | RTDECL(RTCPUID) RTMpCpuId(void)
|
---|
623 | {
|
---|
624 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
625 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
626 |
|
---|
627 | PROCESSOR_NUMBER ProcNum;
|
---|
628 | ProcNum.Group = 0;
|
---|
629 | ProcNum.Number = 0xff;
|
---|
630 | if (g_pfnGetCurrentProcessorNumberEx)
|
---|
631 | g_pfnGetCurrentProcessorNumberEx(&ProcNum);
|
---|
632 | else if (g_pfnGetCurrentProcessorNumber)
|
---|
633 | {
|
---|
634 | DWORD iCpu = g_pfnGetCurrentProcessorNumber();
|
---|
635 | Assert(iCpu < g_cRtMpWinMaxCpus);
|
---|
636 | ProcNum.Number = iCpu;
|
---|
637 | }
|
---|
638 | else
|
---|
639 | {
|
---|
640 | #if defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)
|
---|
641 | ProcNum.Number = ASMGetApicId();
|
---|
642 | #else
|
---|
643 | # error "Not ported to this architecture."
|
---|
644 | return NIL_RTCPUID;
|
---|
645 | #endif
|
---|
646 | }
|
---|
647 |
|
---|
648 | #ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
|
---|
649 | return RTMPCPUID_FROM_GROUP_AND_NUMBER(ProcNum.Group, ProcNum.Number);
|
---|
650 | #else
|
---|
651 | return RTMpSetIndexFromCpuGroupMember(ProcNum.Group, ProcNum.Number);
|
---|
652 | #endif
|
---|
653 | }
|
---|
654 |
|
---|
655 |
|
---|
656 | /*
|
---|
657 | * Possible CPUs and cores.
|
---|
658 | */
|
---|
659 |
|
---|
660 | RTDECL(RTCPUID) RTMpGetMaxCpuId(void)
|
---|
661 | {
|
---|
662 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
663 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
664 |
|
---|
665 | #ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
|
---|
666 | return RTMPCPUID_FROM_GROUP_AND_NUMBER(g_cRtMpWinMaxCpuGroups - 1,
|
---|
667 | g_aRtMpWinCpuGroups[g_cRtMpWinMaxCpuGroups - 1].cMaxCpus - 1);
|
---|
668 | #else
|
---|
669 | return g_cRtMpWinMaxCpus - 1;
|
---|
670 | #endif
|
---|
671 | }
|
---|
672 |
|
---|
673 |
|
---|
674 | RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu)
|
---|
675 | {
|
---|
676 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
677 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
678 |
|
---|
679 | /* Any CPU between 0 and g_cRtMpWinMaxCpus are possible. */
|
---|
680 | return idCpu < g_cRtMpWinMaxCpus;
|
---|
681 | }
|
---|
682 |
|
---|
683 |
|
---|
684 | RTDECL(PRTCPUSET) RTMpGetSet(PRTCPUSET pSet)
|
---|
685 | {
|
---|
686 | RTCPUID iCpu = RTMpGetCount();
|
---|
687 | RTCpuSetEmpty(pSet);
|
---|
688 | while (iCpu-- > 0)
|
---|
689 | RTCpuSetAddByIndex(pSet, iCpu);
|
---|
690 | return pSet;
|
---|
691 | }
|
---|
692 |
|
---|
693 |
|
---|
694 | RTDECL(RTCPUID) RTMpGetCount(void)
|
---|
695 | {
|
---|
696 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
697 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
698 |
|
---|
699 | return g_cRtMpWinMaxCpus;
|
---|
700 | }
|
---|
701 |
|
---|
702 |
|
---|
703 | RTDECL(RTCPUID) RTMpGetCoreCount(void)
|
---|
704 | {
|
---|
705 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
706 | RTMPWIN_UPDATE_GIP_GLOBALS();
|
---|
707 |
|
---|
708 | return g_cRtMpWinMaxCpuCores;
|
---|
709 | }
|
---|
710 |
|
---|
711 |
|
---|
712 | /*
|
---|
713 | * Online CPUs and cores.
|
---|
714 | */
|
---|
715 |
|
---|
716 | RTDECL(PRTCPUSET) RTMpGetOnlineSet(PRTCPUSET pSet)
|
---|
717 | {
|
---|
718 | RTOnce(&g_MpInitOnce, rtMpWinInitOnce, NULL);
|
---|
719 |
|
---|
720 | #ifdef IPRT_WITH_GIP_MP_INFO
|
---|
721 | RTMPWIN_UPDATE_GIP_GLOBALS_AND_GET_PGIP();
|
---|
722 | if (pGip)
|
---|
723 | {
|
---|
724 | *pSet = pGip->OnlineCpuSet;
|
---|
725 | return pSet;
|
---|
726 | }
|
---|
727 | #endif
|
---|
728 |
|
---|
729 | if (g_pfnGetLogicalProcessorInformationEx)
|
---|
730 | {
|
---|
731 | /*
|
---|
732 | * Get the group relation info.
|
---|
733 | *
|
---|
734 | * In addition to the ASSUMPTIONS that are documented in rtMpWinInitOnce,
|
---|
735 | * we ASSUME that PROCESSOR_GROUP_INFO::MaximumProcessorCount gives the
|
---|
736 | * active processor mask width.
|
---|
737 | */
|
---|
738 | /** @todo this is not correct for WOW64 */
|
---|
739 | DWORD cbInfo = g_cbRtMpWinGrpRelBuf;
|
---|
740 | SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *pInfo = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)alloca(cbInfo);
|
---|
741 | AssertFatalMsg(g_pfnGetLogicalProcessorInformationEx(RelationGroup, pInfo, &cbInfo) != FALSE,
|
---|
742 | ("last error = %u, cbInfo = %u (in %u)\n", GetLastError(), cbInfo, g_cbRtMpWinGrpRelBuf));
|
---|
743 | AssertFatalMsg(pInfo->Relationship == RelationGroup,
|
---|
744 | ("Relationship = %u, expected %u!\n", pInfo->Relationship, RelationGroup));
|
---|
745 | AssertFatalMsg(pInfo->Group.MaximumGroupCount == g_cRtMpWinMaxCpuGroups,
|
---|
746 | ("MaximumGroupCount is %u, expected %u!\n", pInfo->Group.MaximumGroupCount, g_cRtMpWinMaxCpuGroups));
|
---|
747 |
|
---|
748 | RTCpuSetEmpty(pSet);
|
---|
749 | for (uint32_t idxGroup = 0; idxGroup < pInfo->Group.MaximumGroupCount; idxGroup++)
|
---|
750 | {
|
---|
751 | Assert(pInfo->Group.GroupInfo[idxGroup].MaximumProcessorCount == g_aRtMpWinCpuGroups[idxGroup].cMaxCpus);
|
---|
752 | Assert(pInfo->Group.GroupInfo[idxGroup].ActiveProcessorCount <= g_aRtMpWinCpuGroups[idxGroup].cMaxCpus);
|
---|
753 |
|
---|
754 | KAFFINITY fActive = pInfo->Group.GroupInfo[idxGroup].ActiveProcessorMask;
|
---|
755 | if (fActive != 0)
|
---|
756 | {
|
---|
757 | #ifdef RT_STRICT
|
---|
758 | uint32_t cMembersLeft = pInfo->Group.GroupInfo[idxGroup].ActiveProcessorCount;
|
---|
759 | #endif
|
---|
760 | int const cMembers = g_aRtMpWinCpuGroups[idxGroup].cMaxCpus;
|
---|
761 | for (int idxMember = 0; idxMember < cMembers; idxMember++)
|
---|
762 | {
|
---|
763 | if (fActive & 1)
|
---|
764 | {
|
---|
765 | #ifdef RT_STRICT
|
---|
766 | cMembersLeft--;
|
---|
767 | #endif
|
---|
768 | RTCpuSetAddByIndex(pSet, g_aRtMpWinCpuGroups[idxGroup].aidxCpuSetMembers[idxMember]);
|
---|
769 | fActive >>= 1;
|
---|
770 | if (!fActive)
|
---|
771 | break;
|
---|
772 | }
|
---|
773 | else
|
---|
774 | {
|
---|
775 | fActive >>= 1;
|
---|
776 | }
|
---|
777 | }
|
---|
778 | Assert(cMembersLeft == 0);
|
---|
779 | }
|
---|
780 | else
|
---|
781 | Assert(pInfo->Group.GroupInfo[idxGroup].ActiveProcessorCount == 0);
|
---|
782 | }
|
---|
783 |
|
---|
784 | return pSet;
|
---|
785 | }
|
---|
786 |
|
---|
787 | /*
|
---|
788 | * Legacy fallback code.
|
---|
789 | */
|
---|
790 | SYSTEM_INFO SysInfo;
|
---|
791 | GetSystemInfo(&SysInfo);
|
---|
792 | return RTCpuSetFromU64(pSet, SysInfo.dwActiveProcessorMask);
|
---|
793 | }
|
---|
794 |
|
---|
795 |
|
---|
796 | RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu)
|
---|
797 | {
|
---|
798 | RTCPUSET Set;
|
---|
799 | return RTCpuSetIsMember(RTMpGetOnlineSet(&Set), idCpu);
|
---|
800 | }
|
---|
801 |
|
---|
802 |
|
---|
803 | RTDECL(RTCPUID) RTMpGetOnlineCount(void)
|
---|
804 | {
|
---|
805 | #ifdef IPRT_WITH_GIP_MP_INFO
|
---|
806 | RTMPWIN_UPDATE_GIP_GLOBALS_AND_GET_PGIP();
|
---|
807 | if (pGip)
|
---|
808 | return pGip->cOnlineCpus;
|
---|
809 | #endif
|
---|
810 |
|
---|
811 | RTCPUSET Set;
|
---|
812 | RTMpGetOnlineSet(&Set);
|
---|
813 | return RTCpuSetCount(&Set);
|
---|
814 | }
|
---|
815 |
|
---|
816 |
|
---|
817 | RTDECL(RTCPUID) RTMpGetOnlineCoreCount(void)
|
---|
818 | {
|
---|
819 | /** @todo this isn't entirely correct, but whatever. */
|
---|
820 | return RTMpGetCoreCount();
|
---|
821 | }
|
---|
822 |
|
---|