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authorDerek Jones <derek.jones@ellislab.com>2010-03-02 19:53:43 +0100
committerDerek Jones <derek.jones@ellislab.com>2010-03-02 19:53:43 +0100
commitb97d21f92c3f38aaab36d2c1f885918375417845 (patch)
treec113ccbbbb00340b190905252a4cc6a571e11c8e /system/core/Benchmark.php
parent7313237eaef22530789067066954280d609a0550 (diff)
moving core library files out of libraries into new core folder
Diffstat (limited to 'system/core/Benchmark.php')
-rw-r--r--system/core/Benchmark.php113
1 files changed, 113 insertions, 0 deletions
diff --git a/system/core/Benchmark.php b/system/core/Benchmark.php
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+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CodeIgniter 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 ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/libraries/benchmark.html
+ */
+class CI_Benchmark {
+
+ var $marker = array();
+
+ // --------------------------------------------------------------------
+
+ /**
+ * 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();
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * 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 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 particular marked point
+ * @param string a particular 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($this->marker[$point1]))
+ {
+ return '';
+ }
+
+ 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);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * 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 CI_Benchmark class
+
+/* End of file Benchmark.php */
+/* Location: ./system/libraries/Benchmark.php */ \ No newline at end of file