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Diffstat (limited to 'system/libraries/Benchmark.php')
| -rw-r--r-- | system/libraries/Benchmark.php | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/system/libraries/Benchmark.php b/system/libraries/Benchmark.php new file mode 100644 index 000000000..9dd9d4ac4 --- /dev/null +++ b/system/libraries/Benchmark.php @@ -0,0 +1,117 @@ +<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); +/** + * Code Igniter + * + * An open source application development framework for PHP 4.3.2 or newer + * + * @package CodeIgniter + * @author Rick Ellis + * @copyright Copyright (c) 2006, pMachine, Inc. + * @license http://www.codeignitor.com/user_guide/license.html + * @link http://www.codeigniter.com + * @since Version 1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * Code Igniter Benchmark Class + * + * This class enables you to mark points and calculate the time difference + * between them. Memory consumption can also be displayed. + * + * @package CodeIgniter + * @subpackage Libraries + * @category Libraries + * @author Rick Ellis + * @link http://www.codeigniter.com/user_guide/libraries/benchmark.html + */ +class CI_Benchmark { + + var $marker = array(); + + /** + * Constructor + * + * @access public + */ + function CI_Benchmark() + { + } + // END CI_Benchmark() + + // -------------------------------------------------------------------- + + /** + * Set a benchmark marker + * + * Multiple calls to this function can be made so that several + * execution points can be timed + * + * @access public + * @param string $name name of the marker + * @return void + */ + function mark($name) + { + $this->marker[$name] = microtime(); + } + // END mark() + + // -------------------------------------------------------------------- + + /** + * Calculates the time difference between two marked points. + * + * If the first parameter is empty this function instead returns the + * {elapsed_time} pseudo-variable. This permits the the full system + * execution time to be shown in a template. The output class will + * swap the real value for this variable. + * + * @access public + * @param string a paricular marked point + * @param string a paricular marked point + * @param integer the number of decimal places + * @return mixed + */ + function elapsed_time($point1 = '', $point2 = '', $decimals = 4) + { + if ($point1 == '') + { + return '{elapsed_time}'; + } + + if ( ! isset($this->marker[$point2])) + $this->marker[$point2] = microtime(); + + list($sm, $ss) = explode(' ', $this->marker[$point1]); + list($em, $es) = explode(' ', $this->marker[$point2]); + + return number_format(($em + $es) - ($sm + $ss), $decimals); + } + // END elapsed_time() + + // -------------------------------------------------------------------- + + /** + * Memory Usage + * + * This function returns the {memory_usage} pseudo-variable. + * This permits it to be put it anywhere in a template + * without the memory being calculated until the end. + * The output class will swap the real value for this variable. + * + * @access public + * @return string + */ + function memory_usage() + { + return '{memory_usage}'; + } + // END memory_usage() + +} + +// END CI_Benchmark class +?>
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