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<?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.
*/
namespace Twig\Profiler;
/**
* @author Fabien Potencier <[email protected]>
*/
final class Profile implements \IteratorAggregate, \Serializable
{
public const ROOT = 'ROOT';
public const BLOCK = 'block';
public const TEMPLATE = 'template';
public const MACRO = 'macro';
private $template;
private $name;
private $type;
private $starts = [];
private $ends = [];
private $profiles = [];
public function __construct(string $template = 'main', string $type = self::ROOT, string $name = 'main')
{
$this->template = $template;
$this->type = $type;
$this->name = 0 === strpos($name, '__internal_') ? 'INTERNAL' : $name;
$this->enter();
}
public function getTemplate(): string
{
return $this->template;
}
public function getType(): string
{
return $this->type;
}
public function getName(): string
{
return $this->name;
}
public function isRoot(): bool
{
return self::ROOT === $this->type;
}
public function isTemplate(): bool
{
return self::TEMPLATE === $this->type;
}
public function isBlock(): bool
{
return self::BLOCK === $this->type;
}
public function isMacro(): bool
{
return self::MACRO === $this->type;
}
/**
* @return Profile[]
*/
public function getProfiles(): array
{
return $this->profiles;
}
public function addProfile(self $profile): void
{
$this->profiles[] = $profile;
}
/**
* Returns the duration in microseconds.
*/
public function getDuration(): float
{
if ($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'] - $this->starts['wt'] : 0;
}
/**
* Returns the memory usage in bytes.
*/
public function getMemoryUsage(): int
{
return isset($this->ends['mu']) && isset($this->starts['mu']) ? $this->ends['mu'] - $this->starts['mu'] : 0;
}
/**
* Returns the peak memory usage in bytes.
*/
public function getPeakMemoryUsage(): int
{
return isset($this->ends['pmu']) && isset($this->starts['pmu']) ? $this->ends['pmu'] - $this->starts['pmu'] : 0;
}
/**
* Starts the profiling.
*/
public function enter(): void
{
$this->starts = [
'wt' => microtime(true),
'mu' => memory_get_usage(),
'pmu' => memory_get_peak_usage(),
];
}
/**
* Stops the profiling.
*/
public function leave(): void
{
$this->ends = [
'wt' => microtime(true),
'mu' => memory_get_usage(),
'pmu' => memory_get_peak_usage(),
];
}
public function reset(): void
{
$this->starts = $this->ends = $this->profiles = [];
$this->enter();
}
public function getIterator(): \Traversable
{
return new \ArrayIterator($this->profiles);
}
public function serialize(): string
{
return serialize($this->__serialize());
}
public function unserialize($data): void
{
$this->__unserialize(unserialize($data));
}
/**
* @internal
*/
public function __serialize(): array
{
return [$this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles];
}
/**
* @internal
*/
public function __unserialize(array $data): void
{
list($this->template, $this->name, $this->type, $this->starts, $this->ends, $this->profiles) = $data;
}
}
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