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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Hold PhpMyAdmin\SysInfoWINNT class
*
* @package PhpMyAdmin
*/
namespace PhpMyAdmin;
use COM;
use PhpMyAdmin\SysInfoBase;
/**
* Windows NT based SysInfo class
*
* @package PhpMyAdmin
*/
class SysInfoWINNT extends SysInfoBase
{
private $_wmi;
public $os = 'WINNT';
/**
* Constructor to access to wmi database.
*/
public function __construct()
{
if (!class_exists('COM')) {
$this->_wmi = null;
} else {
// initialize the wmi object
$objLocator = new COM('WbemScripting.SWbemLocator');
$this->_wmi = $objLocator->ConnectServer();
}
}
/**
* Gets load information
*
* @return array with load data
*/
function loadavg()
{
$loadavg = "";
$sum = 0;
$buffer = $this->_getWMI('Win32_Processor', array('LoadPercentage'));
foreach ($buffer as $load) {
$value = $load['LoadPercentage'];
$loadavg .= $value . ' ';
$sum += $value;
}
return array('loadavg' => $sum / count($buffer));
}
/**
* Checks whether class is supported in this environment
*
* @return true on success
*/
public function supported()
{
return !is_null($this->_wmi);
}
/**
* Reads data from WMI
*
* @param string $strClass Class to read
* @param array $strValue Values to read
*
* @return array with results
*/
private function _getWMI($strClass, array $strValue = array())
{
$arrData = array();
$objWEBM = $this->_wmi->Get($strClass);
$arrProp = $objWEBM->Properties_;
$arrWEBMCol = $objWEBM->Instances_();
foreach ($arrWEBMCol as $objItem) {
$arrInstance = array();
foreach ($arrProp as $propItem) {
$name = $propItem->Name;
if (empty($strValue) || in_array($name, $strValue)) {
$value = $objItem->$name;
if (is_string($value)) {
$arrInstance[$name] = trim($value);
} else {
$arrInstance[$name] = $value;
}
}
}
$arrData[] = $arrInstance;
}
return $arrData;
}
/**
* Gets information about memory usage
*
* @return array with memory usage data
*/
function memory()
{
$buffer = $this->_getWMI(
"Win32_OperatingSystem",
array('TotalVisibleMemorySize', 'FreePhysicalMemory')
);
$mem = Array();
$mem['MemTotal'] = $buffer[0]['TotalVisibleMemorySize'];
$mem['MemFree'] = $buffer[0]['FreePhysicalMemory'];
$mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'];
$buffer = $this->_getWMI('Win32_PageFileUsage');
$mem['SwapTotal'] = 0;
$mem['SwapUsed'] = 0;
$mem['SwapPeak'] = 0;
foreach ($buffer as $swapdevice) {
$mem['SwapTotal'] += $swapdevice['AllocatedBaseSize'] * 1024;
$mem['SwapUsed'] += $swapdevice['CurrentUsage'] * 1024;
$mem['SwapPeak'] += $swapdevice['PeakUsage'] * 1024;
}
return $mem;
}
}