Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#include "zbxsysinfo.h"

#include "../sysinfo.h"

​

#ifdef HAVE_LIBPERFSTAT

​

static perfstat_memory_total_t  m;

​

#define ZBX_PERFSTAT_PAGE_SHIFT 12  /* 4 KB */

​

#define ZBX_PERFSTAT_MEMORY_TOTAL()                                 \

                                                    \

    if (-1 == perfstat_memory_total(NULL, &m, sizeof(m), 1))                    \

    {                                               \

        SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s",   \

                zbx_strerror(errno)));                          \

        return SYSINFO_RET_FAIL;                                \

    }

​

static int  vm_memory_total(AGENT_RESULT *result)

{

    ZBX_PERFSTAT_MEMORY_TOTAL();

​

    /* total real memory in pages */

    SET_UI64_RESULT(result, m.real_total << ZBX_PERFSTAT_PAGE_SHIFT);

​

    return SYSINFO_RET_OK;

}

​

static int  vm_memory_pinned(AGENT_RESULT *result)

{

    ZBX_PERFSTAT_MEMORY_TOTAL();

​

    /* real memory which is pinned in pages */

    SET_UI64_RESULT(result, m.real_pinned << ZBX_PERFSTAT_PAGE_SHIFT);

​

    return SYSINFO_RET_OK;

}

​

static int  vm_memory_free(AGENT_RESULT *result)

{

    ZBX_PERFSTAT_MEMORY_TOTAL();

​

    /* free real memory in pages */

    SET_UI64_RESULT(result, m.real_free << ZBX_PERFSTAT_PAGE_SHIFT);

​

    return SYSINFO_RET_OK;

}

​

static int  vm_memory_used(AGENT_RESULT *result)