| 1 | /* $Id: mp-solaris.cpp 47968 2013-08-21 13:29:38Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Multiprocessor, Solaris.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2008-2012 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | /*******************************************************************************
|
|---|
| 28 | * Header Files *
|
|---|
| 29 | *******************************************************************************/
|
|---|
| 30 | #define LOG_GROUP RTLOGGROUP_DEFAULT
|
|---|
| 31 | #include <unistd.h>
|
|---|
| 32 | #include <stdio.h>
|
|---|
| 33 | #include <errno.h>
|
|---|
| 34 | #include <kstat.h>
|
|---|
| 35 | #include <sys/processor.h>
|
|---|
| 36 |
|
|---|
| 37 | #include <iprt/mp.h>
|
|---|
| 38 | #include <iprt/cpuset.h>
|
|---|
| 39 | #include <iprt/assert.h>
|
|---|
| 40 | #include <iprt/string.h>
|
|---|
| 41 | #include <iprt/alloc.h>
|
|---|
| 42 | #include <iprt/log.h>
|
|---|
| 43 | #include <iprt/once.h>
|
|---|
| 44 | #include <iprt/critsect.h>
|
|---|
| 45 |
|
|---|
| 46 |
|
|---|
| 47 | /*******************************************************************************
|
|---|
| 48 | * Global Variables *
|
|---|
| 49 | *******************************************************************************/
|
|---|
| 50 | /** Initialization serializing (rtMpSolarisOnce). */
|
|---|
| 51 | static RTONCE g_MpSolarisOnce = RTONCE_INITIALIZER;
|
|---|
| 52 | /** Critical section serializing access to kstat. */
|
|---|
| 53 | static RTCRITSECT g_MpSolarisCritSect;
|
|---|
| 54 | /** The kstat handle. */
|
|---|
| 55 | static kstat_ctl_t *g_pKsCtl;
|
|---|
| 56 | /** Array pointing to the cpu_info instances. */
|
|---|
| 57 | static kstat_t **g_papCpuInfo;
|
|---|
| 58 | /** The number of entries in g_papCpuInfo */
|
|---|
| 59 | static RTCPUID g_capCpuInfo;
|
|---|
| 60 |
|
|---|
| 61 |
|
|---|
| 62 | /**
|
|---|
| 63 | * Run once function that initializes the kstats we need here.
|
|---|
| 64 | *
|
|---|
| 65 | * @returns IPRT status code.
|
|---|
| 66 | * @param pvUser Unused.
|
|---|
| 67 | */
|
|---|
| 68 | static DECLCALLBACK(int) rtMpSolarisOnce(void *pvUser)
|
|---|
| 69 | {
|
|---|
| 70 | int rc = VINF_SUCCESS;
|
|---|
| 71 | NOREF(pvUser);
|
|---|
| 72 |
|
|---|
| 73 | /*
|
|---|
| 74 | * Open kstat and find the cpu_info entries for each of the CPUs.
|
|---|
| 75 | */
|
|---|
| 76 | g_pKsCtl = kstat_open();
|
|---|
| 77 | if (g_pKsCtl)
|
|---|
| 78 | {
|
|---|
| 79 | g_capCpuInfo = RTMpGetCount();
|
|---|
| 80 | g_papCpuInfo = (kstat_t **)RTMemAllocZ(g_capCpuInfo * sizeof(kstat_t *));
|
|---|
| 81 | if (g_papCpuInfo)
|
|---|
| 82 | {
|
|---|
| 83 | rc = RTCritSectInit(&g_MpSolarisCritSect);
|
|---|
| 84 | if (RT_SUCCESS(rc))
|
|---|
| 85 | {
|
|---|
| 86 | RTCPUID i = 0;
|
|---|
| 87 | for (kstat_t *pKsp = g_pKsCtl->kc_chain; pKsp != NULL; pKsp = pKsp->ks_next)
|
|---|
| 88 | {
|
|---|
| 89 | if (!strcmp(pKsp->ks_module, "cpu_info"))
|
|---|
| 90 | {
|
|---|
| 91 | AssertBreak(i < g_capCpuInfo);
|
|---|
| 92 | g_papCpuInfo[i++] = pKsp;
|
|---|
| 93 | /** @todo ks_instance == cpu_id (/usr/src/uts/common/os/cpu.c)? Check this and fix it ASAP. */
|
|---|
| 94 | }
|
|---|
| 95 | }
|
|---|
| 96 |
|
|---|
| 97 | return VINF_SUCCESS;
|
|---|
| 98 | }
|
|---|
| 99 |
|
|---|
| 100 | /* bail out, we failed. */
|
|---|
| 101 | RTMemFree(g_papCpuInfo);
|
|---|
| 102 | }
|
|---|
| 103 | else
|
|---|
| 104 | rc = VERR_NO_MEMORY;
|
|---|
| 105 | kstat_close(g_pKsCtl);
|
|---|
| 106 | g_pKsCtl = NULL;
|
|---|
| 107 | }
|
|---|
| 108 | else
|
|---|
| 109 | {
|
|---|
| 110 | rc = RTErrConvertFromErrno(errno);
|
|---|
| 111 | if (RT_SUCCESS(rc))
|
|---|
| 112 | rc = VERR_INTERNAL_ERROR;
|
|---|
| 113 | Log(("kstat_open() -> %d (%Rrc)\n", errno, rc));
|
|---|
| 114 | }
|
|---|
| 115 |
|
|---|
| 116 | return rc;
|
|---|
| 117 | }
|
|---|
| 118 |
|
|---|
| 119 |
|
|---|
| 120 | /**
|
|---|
| 121 | * Worker for RTMpGetCurFrequency and RTMpGetMaxFrequency.
|
|---|
| 122 | *
|
|---|
| 123 | * @returns The desired frequency on success, 0 on failure.
|
|---|
| 124 | *
|
|---|
| 125 | * @param idCpu The CPU ID.
|
|---|
| 126 | * @param pszStatName The cpu_info stat name.
|
|---|
| 127 | */
|
|---|
| 128 | static uint64_t rtMpSolarisGetFrequency(RTCPUID idCpu, const char *pszStatName)
|
|---|
| 129 | {
|
|---|
| 130 | uint64_t u64 = 0;
|
|---|
| 131 | int rc = RTOnce(&g_MpSolarisOnce, rtMpSolarisOnce, NULL);
|
|---|
| 132 | if (RT_SUCCESS(rc))
|
|---|
| 133 | {
|
|---|
| 134 | if ( idCpu < g_capCpuInfo
|
|---|
| 135 | && g_papCpuInfo[idCpu])
|
|---|
| 136 | {
|
|---|
| 137 | rc = RTCritSectEnter(&g_MpSolarisCritSect);
|
|---|
| 138 | AssertRC(rc);
|
|---|
| 139 | if (RT_SUCCESS(rc))
|
|---|
| 140 | {
|
|---|
| 141 | if (kstat_read(g_pKsCtl, g_papCpuInfo[idCpu], 0) != -1)
|
|---|
| 142 | {
|
|---|
| 143 | kstat_named_t *pStat = (kstat_named_t *)kstat_data_lookup(g_papCpuInfo[idCpu], (char*)pszStatName);
|
|---|
| 144 | if (pStat)
|
|---|
| 145 | {
|
|---|
| 146 | Assert(pStat->data_type == KSTAT_DATA_UINT64 || pStat->data_type == KSTAT_DATA_LONG);
|
|---|
| 147 | switch (pStat->data_type)
|
|---|
| 148 | {
|
|---|
| 149 | case KSTAT_DATA_UINT64: u64 = pStat->value.ui64; break; /* current_clock_Hz */
|
|---|
| 150 | case KSTAT_DATA_INT32: u64 = pStat->value.i32; break; /* clock_MHz */
|
|---|
| 151 |
|
|---|
| 152 | /* just in case... */
|
|---|
| 153 | case KSTAT_DATA_UINT32: u64 = pStat->value.ui32; break;
|
|---|
| 154 | case KSTAT_DATA_INT64: u64 = pStat->value.i64; break;
|
|---|
| 155 | default:
|
|---|
| 156 | AssertMsgFailed(("%d\n", pStat->data_type));
|
|---|
| 157 | break;
|
|---|
| 158 | }
|
|---|
| 159 | }
|
|---|
| 160 | else
|
|---|
| 161 | Log(("kstat_data_lookup(%s) -> %d\n", pszStatName, errno));
|
|---|
| 162 | }
|
|---|
| 163 | else
|
|---|
| 164 | Log(("kstat_read() -> %d\n", errno));
|
|---|
| 165 | RTCritSectLeave(&g_MpSolarisCritSect);
|
|---|
| 166 | }
|
|---|
| 167 | }
|
|---|
| 168 | else
|
|---|
| 169 | Log(("invalid idCpu: %d (g_capCpuInfo=%d)\n", (int)idCpu, (int)g_capCpuInfo));
|
|---|
| 170 | }
|
|---|
| 171 |
|
|---|
| 172 | return u64;
|
|---|
| 173 | }
|
|---|
| 174 |
|
|---|
| 175 |
|
|---|
| 176 | RTDECL(uint32_t) RTMpGetCurFrequency(RTCPUID idCpu)
|
|---|
| 177 | {
|
|---|
| 178 | /* Solaris really need to fix their APIs. */
|
|---|
| 179 | return rtMpSolarisGetFrequency(idCpu, "current_clock_Hz") / 1000000;
|
|---|
| 180 | }
|
|---|
| 181 |
|
|---|
| 182 |
|
|---|
| 183 | RTDECL(uint32_t) RTMpGetMaxFrequency(RTCPUID idCpu)
|
|---|
| 184 | {
|
|---|
| 185 | return rtMpSolarisGetFrequency(idCpu, "clock_MHz");
|
|---|
| 186 | }
|
|---|
| 187 |
|
|---|
| 188 |
|
|---|
| 189 | #if defined(RT_ARCH_SPARC) || defined(RT_ARCH_SPARC64)
|
|---|
| 190 | RTDECL(RTCPUID) RTMpCpuId(void)
|
|---|
| 191 | {
|
|---|
| 192 | /** @todo implement RTMpCpuId on solaris/r3! */
|
|---|
| 193 | return NIL_RTCPUID;
|
|---|
| 194 | }
|
|---|
| 195 | #endif
|
|---|
| 196 |
|
|---|
| 197 |
|
|---|
| 198 | RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu)
|
|---|
| 199 | {
|
|---|
| 200 | return idCpu < RTCPUSET_MAX_CPUS ? (int)idCpu : -1;
|
|---|
| 201 | }
|
|---|
| 202 |
|
|---|
| 203 |
|
|---|
| 204 | RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu)
|
|---|
| 205 | {
|
|---|
| 206 | return (unsigned)iCpu < RTCPUSET_MAX_CPUS ? iCpu : NIL_RTCPUID;
|
|---|
| 207 | }
|
|---|
| 208 |
|
|---|
| 209 |
|
|---|
| 210 | RTDECL(RTCPUID) RTMpGetMaxCpuId(void)
|
|---|
| 211 | {
|
|---|
| 212 | return RTMpGetCount() - 1;
|
|---|
| 213 | }
|
|---|
| 214 |
|
|---|
| 215 |
|
|---|
| 216 | RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu)
|
|---|
| 217 | {
|
|---|
| 218 | return idCpu != NIL_RTCPUID
|
|---|
| 219 | && idCpu < (RTCPUID)RTMpGetCount();
|
|---|
| 220 | }
|
|---|
| 221 |
|
|---|
| 222 |
|
|---|
| 223 | RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu)
|
|---|
| 224 | {
|
|---|
| 225 | int iStatus = p_online(idCpu, P_STATUS);
|
|---|
| 226 | return iStatus == P_ONLINE
|
|---|
| 227 | || iStatus == P_NOINTR;
|
|---|
| 228 | }
|
|---|
| 229 |
|
|---|
| 230 |
|
|---|
| 231 | RTDECL(bool) RTMpIsCpuPresent(RTCPUID idCpu)
|
|---|
| 232 | {
|
|---|
| 233 | int iStatus = p_online(idCpu, P_STATUS);
|
|---|
| 234 | return iStatus != -1;
|
|---|
| 235 | }
|
|---|
| 236 |
|
|---|
| 237 |
|
|---|
| 238 | RTDECL(RTCPUID) RTMpGetCount(void)
|
|---|
| 239 | {
|
|---|
| 240 | /*
|
|---|
| 241 | * Solaris has sysconf.
|
|---|
| 242 | */
|
|---|
| 243 | int cCpus = sysconf(_SC_NPROCESSORS_MAX);
|
|---|
| 244 | if (cCpus < 0)
|
|---|
| 245 | cCpus = sysconf(_SC_NPROCESSORS_CONF);
|
|---|
| 246 | return cCpus;
|
|---|
| 247 | }
|
|---|
| 248 |
|
|---|
| 249 |
|
|---|
| 250 | RTDECL(PRTCPUSET) RTMpGetSet(PRTCPUSET pSet)
|
|---|
| 251 | {
|
|---|
| 252 | RTCpuSetEmpty(pSet);
|
|---|
| 253 | int idCpu = RTMpGetCount();
|
|---|
| 254 | while (idCpu-- > 0)
|
|---|
| 255 | RTCpuSetAdd(pSet, idCpu);
|
|---|
| 256 | return pSet;
|
|---|
| 257 | }
|
|---|
| 258 |
|
|---|
| 259 |
|
|---|
| 260 | RTDECL(RTCPUID) RTMpGetOnlineCount(void)
|
|---|
| 261 | {
|
|---|
| 262 | /*
|
|---|
| 263 | * Solaris has sysconf.
|
|---|
| 264 | */
|
|---|
| 265 | return sysconf(_SC_NPROCESSORS_ONLN);
|
|---|
| 266 | }
|
|---|
| 267 |
|
|---|
| 268 |
|
|---|
| 269 | RTDECL(PRTCPUSET) RTMpGetOnlineSet(PRTCPUSET pSet)
|
|---|
| 270 | {
|
|---|
| 271 | RTCpuSetEmpty(pSet);
|
|---|
| 272 | RTCPUID cCpus = RTMpGetCount();
|
|---|
| 273 | for (RTCPUID idCpu = 0; idCpu < cCpus; idCpu++)
|
|---|
| 274 | if (RTMpIsCpuOnline(idCpu))
|
|---|
| 275 | RTCpuSetAdd(pSet, idCpu);
|
|---|
| 276 | return pSet;
|
|---|
| 277 | }
|
|---|
| 278 |
|
|---|
| 279 |
|
|---|
| 280 | RTDECL(PRTCPUSET) RTMpGetPresentSet(PRTCPUSET pSet)
|
|---|
| 281 | {
|
|---|
| 282 | #ifdef RT_STRICT
|
|---|
| 283 | long cCpusPresent = 0;
|
|---|
| 284 | #endif
|
|---|
| 285 | RTCpuSetEmpty(pSet);
|
|---|
| 286 | RTCPUID cCpus = RTMpGetCount();
|
|---|
| 287 | for (RTCPUID idCpu = 0; idCpu < cCpus; idCpu++)
|
|---|
| 288 | if (RTMpIsCpuPresent(idCpu))
|
|---|
| 289 | {
|
|---|
| 290 | RTCpuSetAdd(pSet, idCpu);
|
|---|
| 291 | #ifdef RT_STRICT
|
|---|
| 292 | cCpusPresent++;
|
|---|
| 293 | #endif
|
|---|
| 294 | }
|
|---|
| 295 | Assert(cCpusPresent == RTMpGetPresentCount());
|
|---|
| 296 | return pSet;
|
|---|
| 297 | }
|
|---|
| 298 |
|
|---|
| 299 |
|
|---|
| 300 | RTDECL(RTCPUID) RTMpGetPresentCount(void)
|
|---|
| 301 | {
|
|---|
| 302 | /*
|
|---|
| 303 | * Solaris has sysconf.
|
|---|
| 304 | */
|
|---|
| 305 | return sysconf(_SC_NPROCESSORS_CONF);
|
|---|
| 306 | }
|
|---|
| 307 |
|
|---|
