diff options
Diffstat (limited to 'src/VBox/Runtime/r3/solaris/systemmem-solaris.cpp')
| -rw-r--r-- | src/VBox/Runtime/r3/solaris/systemmem-solaris.cpp | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/solaris/systemmem-solaris.cpp b/src/VBox/Runtime/r3/solaris/systemmem-solaris.cpp new file mode 100644 index 00000000..b083c4f0 --- /dev/null +++ b/src/VBox/Runtime/r3/solaris/systemmem-solaris.cpp @@ -0,0 +1,182 @@ +/* $Id: systemmem-solaris.cpp $ */ +/** @file + * IPRT - RTSystemQueryTotalRam, Solaris ring-3. + */ + +/* + * Copyright (C) 2012-2023 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 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/system.h> +#include "internal/iprt.h" + +#include <iprt/errcore.h> +#include <iprt/assert.h> +#include <iprt/critsect.h> +#include <iprt/once.h> +#include <iprt/param.h> + +#include <errno.h> +#include <kstat.h> + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** Initialize globals once. */ +static RTONCE g_rtSysMemSolInitOnce = RTONCE_INITIALIZER; +/** Critical section serializing access to g_pKStatCtl and the other handles. */ +static RTCRITSECT g_rtSysMemSolCritSect; +/** The kstate control handle. */ +static kstat_ctl_t *g_pKStatCtl = NULL; +/** The unix.system_pages handle. */ +static kstat_t *g_pUnixSysPages = NULL; +/** The zfs.archstats handle. */ +static kstat_t *g_pZfsArcStats = NULL; + + +/** @callback_method_impl{FNRTONCE} */ +static DECLCALLBACK(int) rtSysMemSolInit(void *pvUser) +{ + int rc = RTCritSectInit(&g_rtSysMemSolCritSect); + if (RT_SUCCESS(rc)) + { + g_pKStatCtl = kstat_open(); + if (g_pKStatCtl) + { + g_pUnixSysPages = kstat_lookup(g_pKStatCtl, (char *)"unix", 0, (char *)"system_pages"); + if (g_pUnixSysPages) + { + g_pZfsArcStats = kstat_lookup(g_pKStatCtl, (char *)"zfs", 0, (char *)"arcstats"); /* allow NULL */ + return VINF_SUCCESS; + } + + rc = RTErrConvertFromErrno(errno); + kstat_close(g_pKStatCtl); + g_pKStatCtl = NULL; + } + else + rc = RTErrConvertFromErrno(errno); + } + return rc; +} + + +/** @callback_method_impl{FNRTONCECLEANUP} */ +static DECLCALLBACK(void) rtSysMemSolCleanUp(void *pvUser, bool fLazyCleanUpOk) +{ + RTCritSectDelete(&g_rtSysMemSolCritSect); + + kstat_close(g_pKStatCtl); + g_pKStatCtl = NULL; + g_pUnixSysPages = NULL; + g_pZfsArcStats = NULL; + + NOREF(pvUser); NOREF(fLazyCleanUpOk); +} + + + +RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb) +{ + AssertPtrReturn(pcb, VERR_INVALID_POINTER); + + int rc = RTOnceEx(&g_rtSysMemSolInitOnce, rtSysMemSolInit, rtSysMemSolCleanUp, NULL); + if (RT_SUCCESS(rc)) + { + rc = RTCritSectEnter(&g_rtSysMemSolCritSect); + if (RT_SUCCESS(rc)) + { + if (kstat_read(g_pKStatCtl, g_pUnixSysPages, NULL) != -1) + { + kstat_named_t *pData = (kstat_named_t *)kstat_data_lookup(g_pUnixSysPages, (char *)"physmem"); + if (pData) + *pcb = (uint64_t)pData->value.ul * PAGE_SIZE; + else + rc = RTErrConvertFromErrno(errno); + } + else + rc = RTErrConvertFromErrno(errno); + RTCritSectLeave(&g_rtSysMemSolCritSect); + } + } + return rc; +} + + +RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb) +{ + AssertPtrReturn(pcb, VERR_INVALID_POINTER); + + int rc = RTOnceEx(&g_rtSysMemSolInitOnce, rtSysMemSolInit, rtSysMemSolCleanUp, NULL); + if (RT_SUCCESS(rc)) + { + rc = RTCritSectEnter(&g_rtSysMemSolCritSect); + if (RT_SUCCESS(rc)) + { + if (kstat_read(g_pKStatCtl, g_pUnixSysPages, NULL) != -1) + { + kstat_named_t *pData = (kstat_named_t *)kstat_data_lookup(g_pUnixSysPages, (char *)"freemem"); + if (pData) + { + *pcb = (uint64_t)pData->value.ul * PAGE_SIZE; + + /* + * Adjust for ZFS greedyness if possible. + * (c_min is the target minimum size of the cache, it is not + * an absolute minimum.) + */ + if ( g_pZfsArcStats + && kstat_read(g_pKStatCtl, g_pZfsArcStats, NULL) != -1) + { + kstat_named_t *pCurSize = (kstat_named_t *)kstat_data_lookup(g_pZfsArcStats, (char *)"size"); + kstat_named_t *pMinSize = (kstat_named_t *)kstat_data_lookup(g_pZfsArcStats, (char *)"c_min"); + if ( pCurSize + && pMinSize + && pCurSize->value.ul > pMinSize->value.ul) + { + *pcb += pCurSize->value.ul - pMinSize->value.ul; + } + } + } + else + rc = RTErrConvertFromErrno(errno); + } + + RTCritSectLeave(&g_rtSysMemSolCritSect); + } + } + return rc; +} + |