--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @final
+ */
+class Twig_Profiler_Profile implements IteratorAggregate, Serializable
+{
+ const ROOT = 'ROOT';
+ const BLOCK = 'block';
+ const TEMPLATE = 'template';
+ const MACRO = 'macro';
+
+ private $template;
+ private $name;
+ private $type;
+ private $starts = array();
+ private $ends = array();
+ private $profiles = array();
+
+ public function __construct($template = 'main', $type = self::ROOT, $name = 'main')
+ {
+ $this->template = $template;
+ $this->type = $type;
+ $this->name = 0 === strpos($name, '__internal_') ? 'INTERNAL' : $name;
+ $this->enter();
+ }
+
+ public function getTemplate()
+ {
+ return $this->template;
+ }
+
+ public function getType()
+ {
+ return $this->type;
+ }
+
+ public function getName()
+ {
+ return $this->name;
+ }
+
+ public function isRoot()
+ {
+ return self::ROOT === $this->type;
+ }
+
+ public function isTemplate()
+ {
+ return self::TEMPLATE === $this->type;
+ }
+
+ public function isBlock()
+ {
+ return self::BLOCK === $this->type;
+ }
+
+ public function isMacro()
+ {
+ return self::MACRO === $this->type;
+ }
+
+ public function getProfiles()
+ {
+ return $this->profiles;
+ }
+
+ public function addProfile(Twig_Profiler_Profile $profile)
+ {
+ $this->profiles[] = $profile;
+ }
+
+ /**
+ * Returns the duration in microseconds.
+ *
+ * @return int
+ */
+ public function getDuration()
+ {
+ if ($this->isRoot() && $this->profiles) {
+ // for the root node with children, duration is the sum of all child durations
+ $duration = 0;
+ foreach ($this->profiles as $profile) {
+ $duration += $profile->getDuration();
+ }
+
+ return $duration;
+ }
+
+ return isset($this->ends['wt']) && isset($this->starts['wt']) ? $this->ends['wt'] - $this->starts['wt'] : 0;
+ }
+
+ /**
+ * Returns the memory usage in bytes.
+ *
+ * @return int
+ */
+ public function getMemoryUsage()
+ {
+ return isset($this->ends['mu']) && isset($this->starts['mu']) ? $this->ends['mu'] - $this->starts['mu'] : 0;
+ }
+
+ /**
+ * Returns the peak memory usage in bytes.
+ *
+ * @return int
+ */
+ public function getPeakMemoryUsage()
+ {
+ return isset($this->ends['pmu']) && isset($this->starts['pmu']) ? $this->ends['pmu'] - $this->starts['pmu'] : 0;
+ }
+
+ /**
+ * Starts the profiling.
+ */
+ public function enter()
+ {
+ $this->starts = array(
+ 'wt' => microtime(true),
+ 'mu' => memory_get_usage(),
+ 'pmu' => memory_get_peak_usage(),
+ );
+ }
+
+ /**
+ * Stops the profiling.
+ */
+ public function leave()
+ {
+ $this->ends = array(
+ 'wt' => microtime(true),
+ 'mu' => memory_get_usage(),
+ 'pmu' => memory_get_peak_usage(),
+ );
+ }
+
+ public function getIterator()
+ {
+ return new ArrayIterator($this->profiles);
+ }
+
+ public function serialize()
+ {
+ return serialize(array($this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles));
+ }
+
+ public function unserialize($data)
+ {
+ list($this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles) = unserialize($data);
+ }
+}