1: <?php
  2: 
  3: /**
  4:  * XSLT Benchmarking
  5:  * @link https://github.com/masicek/XSLT-Benchmarking
  6:  * @author Viktor Mašíček <viktor@masicek.net>
  7:  * @license "New" BSD License
  8:  */
  9: 
 10: namespace XSLTBenchmarking\TestsRunner;
 11: 
 12: require_once __DIR__ . '/AMemoryUsageDriver.php';
 13: require_once ROOT . '/Exceptions.php';
 14: require_once LIBS . '/PhpPath/PhpPath.min.php';
 15: 
 16: use PhpPath\P;
 17: 
 18: /**
 19:  * Linux driver for geting maximum memory usage of command excuteb by 'exec'
 20:  *
 21:  * @author Viktor Mašíček <viktor@masicek.net>
 22:  */
 23: class LinuxMemoryUsageDriver extends AMemoryUsageDriver
 24: {
 25: 
 26: 
 27:     /**
 28:      * Path of log file for reporting measured PeakWorkingSetSize from '/usr/bin/time'
 29:      *
 30:      * @var string
 31:      */
 32:     private $logPath;
 33: 
 34:     /**
 35:      * Path of script included running command for running in '/usr/bin/time'
 36:      *
 37:      * @var string
 38:      */
 39:     private $scriptPath;
 40: 
 41: 
 42:     /**
 43:      * Construct path of main and end log files
 44:      *
 45:      * @param type $tmpDir Path of temporary directory
 46:      */
 47:     public function __construct($tmpDir)
 48:     {
 49:         parent::__construct($tmpDir);
 50: 
 51:         $this->logPath = P::m($this->tmpDir, 'linuxMemoryUsage.log');
 52:         $this->scriptPath = P::m($this->tmpDir, 'linuxMemoryUsage.sh');
 53:     }
 54: 
 55: 
 56:     /**
 57:      * Save command into scrit and return command for running set command and
 58:      * checking its memory usage.
 59:      *
 60:      * @param string $command Checked command
 61:      *
 62:      * @throws \XSLTBenchmarking\InvalidArgumentException Log/Script file exist
 63:      * @return string
 64:      */
 65:     public function run($command)
 66:     {
 67:         if (is_file($this->logPath))
 68:         {
 69:             throw new \XSLTBenchmarking\InvalidArgumentException('Linux memory usage log file exist.');
 70:         }
 71:         if (is_file($this->scriptPath))
 72:         {
 73:             throw new \XSLTBenchmarking\InvalidArgumentException('Linux memory usage script file exist.');
 74:         }
 75: 
 76:         file_put_contents($this->scriptPath, $command);
 77:         chmod($this->scriptPath, 0777);
 78: 
 79:         $command =
 80:             '/usr/bin/time -v ' . $this->scriptPath . ' 2>&1 | ' .
 81:             'grep \'Maximum resident set size (kbytes):\' | ' .
 82:             'sed \'s/^.*: //\' > ' . $this->logPath;
 83: 
 84:         return $command;
 85:     }
 86: 
 87: 
 88:     /**
 89:      * Return maximum memory usage (in bytes) last checked command by self::run().
 90:      *
 91:      * @return integer
 92:      */
 93:     public function get()
 94:     {
 95:         $maxMemory = file_get_contents($this->logPath);
 96:         $maxMemory = trim($maxMemory);
 97: 
 98:         unlink($this->logPath);
 99:         unlink($this->scriptPath);
100: 
101:         // units corrections (Kilobytes -> Bytes)
102:         $maxMemory = $maxMemory * 1000;
103: 
104:         return $maxMemory;
105:     }
106: 
107: 
108: }
109: