106 lines
2.2 KiB
PHP
106 lines
2.2 KiB
PHP
<?php
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/**
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* Hold PhpMyAdmin\SysInfoLinux class
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use function array_combine;
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use function array_merge;
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use function file_get_contents;
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use function intval;
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use function is_readable;
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use function mb_strpos;
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use function mb_substr;
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use function preg_match_all;
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use function preg_split;
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/**
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* Linux based SysInfo class
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*/
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class SysInfoLinux extends SysInfoBase
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{
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public $os = 'Linux';
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/**
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* Gets load information
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*
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* @return array with load data
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*/
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public function loadavg()
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{
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$buf = file_get_contents('/proc/stat');
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if ($buf === false) {
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$buf = '';
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}
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$pos = mb_strpos($buf, "\n");
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if ($pos === false) {
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$pos = 0;
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}
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$nums = preg_split(
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'/\s+/',
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mb_substr(
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$buf,
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0,
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$pos
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)
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);
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return [
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'busy' => (int) $nums[1] + (int) $nums[2] + (int) $nums[3],
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'idle' => (int) $nums[4],
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];
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}
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/**
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* Checks whether class is supported in this environment
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*
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* @return bool true on success
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*/
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public function supported()
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{
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return @is_readable('/proc/meminfo') && @is_readable('/proc/stat');
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}
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/**
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* Gets information about memory usage
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*
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* @return array with memory usage data
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*/
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public function memory()
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{
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preg_match_all(
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SysInfo::MEMORY_REGEXP,
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file_get_contents('/proc/meminfo'),
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$matches
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);
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$mem = array_combine($matches[1], $matches[2]);
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$defaults = [
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'MemTotal' => 0,
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'MemFree' => 0,
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'Cached' => 0,
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'Buffers' => 0,
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'SwapTotal' => 0,
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'SwapFree' => 0,
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'SwapCached' => 0,
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];
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$mem = array_merge($defaults, $mem);
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foreach ($mem as $idx => $value) {
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$mem[$idx] = intval($value);
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}
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$mem['MemUsed'] = $mem['MemTotal']
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- $mem['MemFree'] - $mem['Cached'] - $mem['Buffers'];
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$mem['SwapUsed'] = $mem['SwapTotal']
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- $mem['SwapFree'] - $mem['SwapCached'];
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return $mem;
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}
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}
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