| 1 | /* $Id: systemmem-solaris.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - RTSystemQueryTotalRam, Solaris ring-3.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2012-2024 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * The contents of this file may alternatively be used under the terms
|
|---|
| 26 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
|
|---|
| 28 | * in the VirtualBox distribution, in which case the provisions of the
|
|---|
| 29 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 30 | *
|
|---|
| 31 | * You may elect to license modified versions of this file under the
|
|---|
| 32 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 33 | *
|
|---|
| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | /*********************************************************************************************************************************
|
|---|
| 39 | * Header Files *
|
|---|
| 40 | *********************************************************************************************************************************/
|
|---|
| 41 | #include <iprt/system.h>
|
|---|
| 42 | #include "internal/iprt.h"
|
|---|
| 43 |
|
|---|
| 44 | #include <iprt/errcore.h>
|
|---|
| 45 | #include <iprt/assert.h>
|
|---|
| 46 | #include <iprt/critsect.h>
|
|---|
| 47 | #include <iprt/once.h>
|
|---|
| 48 | #include <iprt/param.h>
|
|---|
| 49 |
|
|---|
| 50 | #include <errno.h>
|
|---|
| 51 | #include <kstat.h>
|
|---|
| 52 |
|
|---|
| 53 |
|
|---|
| 54 | /*********************************************************************************************************************************
|
|---|
| 55 | * Global Variables *
|
|---|
| 56 | *********************************************************************************************************************************/
|
|---|
| 57 | /** Initialize globals once. */
|
|---|
| 58 | static RTONCE g_rtSysMemSolInitOnce = RTONCE_INITIALIZER;
|
|---|
| 59 | /** Critical section serializing access to g_pKStatCtl and the other handles. */
|
|---|
| 60 | static RTCRITSECT g_rtSysMemSolCritSect;
|
|---|
| 61 | /** The kstate control handle. */
|
|---|
| 62 | static kstat_ctl_t *g_pKStatCtl = NULL;
|
|---|
| 63 | /** The unix.system_pages handle. */
|
|---|
| 64 | static kstat_t *g_pUnixSysPages = NULL;
|
|---|
| 65 | /** The zfs.archstats handle. */
|
|---|
| 66 | static kstat_t *g_pZfsArcStats = NULL;
|
|---|
| 67 |
|
|---|
| 68 |
|
|---|
| 69 | /** @callback_method_impl{FNRTONCE} */
|
|---|
| 70 | static DECLCALLBACK(int) rtSysMemSolInit(void *pvUser)
|
|---|
| 71 | {
|
|---|
| 72 | int rc = RTCritSectInit(&g_rtSysMemSolCritSect);
|
|---|
| 73 | if (RT_SUCCESS(rc))
|
|---|
| 74 | {
|
|---|
| 75 | g_pKStatCtl = kstat_open();
|
|---|
| 76 | if (g_pKStatCtl)
|
|---|
| 77 | {
|
|---|
| 78 | g_pUnixSysPages = kstat_lookup(g_pKStatCtl, (char *)"unix", 0, (char *)"system_pages");
|
|---|
| 79 | if (g_pUnixSysPages)
|
|---|
| 80 | {
|
|---|
| 81 | g_pZfsArcStats = kstat_lookup(g_pKStatCtl, (char *)"zfs", 0, (char *)"arcstats"); /* allow NULL */
|
|---|
| 82 | return VINF_SUCCESS;
|
|---|
| 83 | }
|
|---|
| 84 |
|
|---|
| 85 | rc = RTErrConvertFromErrno(errno);
|
|---|
| 86 | kstat_close(g_pKStatCtl);
|
|---|
| 87 | g_pKStatCtl = NULL;
|
|---|
| 88 | }
|
|---|
| 89 | else
|
|---|
| 90 | rc = RTErrConvertFromErrno(errno);
|
|---|
| 91 | }
|
|---|
| 92 | return rc;
|
|---|
| 93 | }
|
|---|
| 94 |
|
|---|
| 95 |
|
|---|
| 96 | /** @callback_method_impl{FNRTONCECLEANUP} */
|
|---|
| 97 | static DECLCALLBACK(void) rtSysMemSolCleanUp(void *pvUser, bool fLazyCleanUpOk)
|
|---|
| 98 | {
|
|---|
| 99 | RTCritSectDelete(&g_rtSysMemSolCritSect);
|
|---|
| 100 |
|
|---|
| 101 | kstat_close(g_pKStatCtl);
|
|---|
| 102 | g_pKStatCtl = NULL;
|
|---|
| 103 | g_pUnixSysPages = NULL;
|
|---|
| 104 | g_pZfsArcStats = NULL;
|
|---|
| 105 |
|
|---|
| 106 | NOREF(pvUser); NOREF(fLazyCleanUpOk);
|
|---|
| 107 | }
|
|---|
| 108 |
|
|---|
| 109 |
|
|---|
| 110 |
|
|---|
| 111 | RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb)
|
|---|
| 112 | {
|
|---|
| 113 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
|
|---|
| 114 |
|
|---|
| 115 | int rc = RTOnceEx(&g_rtSysMemSolInitOnce, rtSysMemSolInit, rtSysMemSolCleanUp, NULL);
|
|---|
| 116 | if (RT_SUCCESS(rc))
|
|---|
| 117 | {
|
|---|
| 118 | rc = RTCritSectEnter(&g_rtSysMemSolCritSect);
|
|---|
| 119 | if (RT_SUCCESS(rc))
|
|---|
| 120 | {
|
|---|
| 121 | if (kstat_read(g_pKStatCtl, g_pUnixSysPages, NULL) != -1)
|
|---|
| 122 | {
|
|---|
| 123 | kstat_named_t *pData = (kstat_named_t *)kstat_data_lookup(g_pUnixSysPages, (char *)"physmem");
|
|---|
| 124 | if (pData)
|
|---|
| 125 | *pcb = (uint64_t)pData->value.ul * PAGE_SIZE;
|
|---|
| 126 | else
|
|---|
| 127 | rc = RTErrConvertFromErrno(errno);
|
|---|
| 128 | }
|
|---|
| 129 | else
|
|---|
| 130 | rc = RTErrConvertFromErrno(errno);
|
|---|
| 131 | RTCritSectLeave(&g_rtSysMemSolCritSect);
|
|---|
| 132 | }
|
|---|
| 133 | }
|
|---|
| 134 | return rc;
|
|---|
| 135 | }
|
|---|
| 136 |
|
|---|
| 137 |
|
|---|
| 138 | RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb)
|
|---|
| 139 | {
|
|---|
| 140 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
|
|---|
| 141 |
|
|---|
| 142 | int rc = RTOnceEx(&g_rtSysMemSolInitOnce, rtSysMemSolInit, rtSysMemSolCleanUp, NULL);
|
|---|
| 143 | if (RT_SUCCESS(rc))
|
|---|
| 144 | {
|
|---|
| 145 | rc = RTCritSectEnter(&g_rtSysMemSolCritSect);
|
|---|
| 146 | if (RT_SUCCESS(rc))
|
|---|
| 147 | {
|
|---|
| 148 | if (kstat_read(g_pKStatCtl, g_pUnixSysPages, NULL) != -1)
|
|---|
| 149 | {
|
|---|
| 150 | kstat_named_t *pData = (kstat_named_t *)kstat_data_lookup(g_pUnixSysPages, (char *)"freemem");
|
|---|
| 151 | if (pData)
|
|---|
| 152 | {
|
|---|
| 153 | *pcb = (uint64_t)pData->value.ul * PAGE_SIZE;
|
|---|
| 154 |
|
|---|
| 155 | /*
|
|---|
| 156 | * Adjust for ZFS greedyness if possible.
|
|---|
| 157 | * (c_min is the target minimum size of the cache, it is not
|
|---|
| 158 | * an absolute minimum.)
|
|---|
| 159 | */
|
|---|
| 160 | if ( g_pZfsArcStats
|
|---|
| 161 | && kstat_read(g_pKStatCtl, g_pZfsArcStats, NULL) != -1)
|
|---|
| 162 | {
|
|---|
| 163 | kstat_named_t *pCurSize = (kstat_named_t *)kstat_data_lookup(g_pZfsArcStats, (char *)"size");
|
|---|
| 164 | kstat_named_t *pMinSize = (kstat_named_t *)kstat_data_lookup(g_pZfsArcStats, (char *)"c_min");
|
|---|
| 165 | if ( pCurSize
|
|---|
| 166 | && pMinSize
|
|---|
| 167 | && pCurSize->value.ul > pMinSize->value.ul)
|
|---|
| 168 | {
|
|---|
| 169 | *pcb += pCurSize->value.ul - pMinSize->value.ul;
|
|---|
| 170 | }
|
|---|
| 171 | }
|
|---|
| 172 | }
|
|---|
| 173 | else
|
|---|
| 174 | rc = RTErrConvertFromErrno(errno);
|
|---|
| 175 | }
|
|---|
| 176 |
|
|---|
| 177 | RTCritSectLeave(&g_rtSysMemSolCritSect);
|
|---|
| 178 | }
|
|---|
| 179 | }
|
|---|
| 180 | return rc;
|
|---|
| 181 | }
|
|---|
| 182 |
|
|---|
