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/* try MemAvailable (present since Linux 3.14), falling back to a calculation based on sysinfo() and Cached */
/*
** Zabbix
** Copyright (C) 2001-2022 Zabbix SIA
**
** 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; either version 2 of the License, or
** (at your option) any later version.
**
** 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, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
static int VM_MEMORY_TOTAL(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, (zbx_uint64_t)info.totalram * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_FREE(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, (zbx_uint64_t)info.freeram * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_BUFFERS(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, (zbx_uint64_t)info.bufferram * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_USED(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, (zbx_uint64_t)(info.totalram - info.freeram) * info.mem_unit);
return SYSINFO_RET_OK;
}
static int VM_MEMORY_PUSED(AGENT_RESULT *result)
{
struct sysinfo info;
if (0 != sysinfo(&info))
{
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));