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<?php
/*
* This file is part of the DebugBar package.
*
* (c) 2013 Maxime Bouroumeau-Fuseau
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace DebugBar\DataCollector;
use DebugBar\DebugBarException;
/**
* Collects info about the request duration as well as providing
* a way to log duration of any operations
*/
class TimeDataCollector extends DataCollector implements Renderable
{
/**
* @var float
*/
protected $requestStartTime;
/**
* @var float
*/
protected $requestEndTime;
/**
* @var array
*/
protected $startedMeasures = array();
/**
* @var array
*/
protected $measures = array();
/**
* @var bool
*/
protected $memoryMeasure = false;
/**
* @param float $requestStartTime
*/
public function __construct($requestStartTime = null)
{
if ($requestStartTime === null) {
if (isset($_SERVER['REQUEST_TIME_FLOAT'])) {
$requestStartTime = $_SERVER['REQUEST_TIME_FLOAT'];
} else {
$requestStartTime = microtime(true);
}
}
$this->requestStartTime = (float)$requestStartTime;
}
/**
* Starts memory measuring
*/
public function showMemoryUsage()
{
$this->memoryMeasure = true;
}
/**
* Starts a measure
*
* @param string $name Internal name, used to stop the measure
* @param string|null $label Public name
* @param string|null $collector The source of the collector
*/
public function startMeasure($name, $label = null, $collector = null)
{
$start = microtime(true);
$this->startedMeasures[$name] = array(
'label' => $label ?: $name,
'start' => $start,
'memory' => $this->memoryMeasure ? memory_get_usage(false) : null,
'collector' => $collector
);
}
/**
* Check a measure exists
*
* @param string $name
* @return bool
*/
public function hasStartedMeasure($name)
{
return isset($this->startedMeasures[$name]);
}
/**
* Stops a measure
*
* @param string $name
* @param array $params
* @throws DebugBarException
*/
public function stopMeasure($name, $params = array())
{
$end = microtime(true);
if (!$this->hasStartedMeasure($name)) {
throw new DebugBarException("Failed stopping measure '$name' because it hasn't been started");
}
if (! is_null($this->startedMeasures[$name]['memory'])) {
$params['memoryUsage'] = memory_get_usage(false) - $this->startedMeasures[$name]['memory'];
}
$this->addMeasure(
$this->startedMeasures[$name]['label'],
$this->startedMeasures[$name]['start'],
$end,
$params,
$this->startedMeasures[$name]['collector']
);
unset($this->startedMeasures[$name]);
}
/**
* Adds a measure
*
* @param string $label
* @param float $start
* @param float $end
* @param array $params
* @param string|null $collector
*/
public function addMeasure($label, $start, $end, $params = array(), $collector = null)
{
if (isset($params['memoryUsage'])) {
$memory = $this->memoryMeasure ? $params['memoryUsage'] : 0;
unset($params['memoryUsage']);
}
$this->measures[] = array(
'label' => $label,
'start' => $start,
'relative_start' => $start - $this->requestStartTime,
'end' => $end,
'relative_end' => $end - $this->requestEndTime,
'duration' => $end - $start,
'duration_str' => $this->getDataFormatter()->formatDuration($end - $start),
'memory' => $memory ?? 0,
'memory_str' => $this->getDataFormatter()->formatBytes($memory ?? 0),
'params' => $params,
'collector' => $collector
);
}
/**
* Utility function to measure the execution of a Closure
*
* @param string $label
* @param \Closure $closure
* @param string|null $collector
* @return mixed
*/
public function measure($label, \Closure $closure, $collector = null)
{
$name = spl_object_hash($closure);
$this->startMeasure($name, $label, $collector);
$result = $closure();
$params = is_array($result) ? $result : array();
$this->stopMeasure($name, $params);
return $result;
}
/**
* Returns an array of all measures
*
* @return array
*/
public function getMeasures()
{
return $this->measures;
}
/**
* Returns the request start time
*
* @return float
*/
public function getRequestStartTime()
{
return $this->requestStartTime;
}
/**
* Returns the request end time
*
* @return float
*/
public function getRequestEndTime()
{
return $this->requestEndTime;
}
/**
* Returns the duration of a request
*
* @return float
*/
public function getRequestDuration()
{
if ($this->requestEndTime !== null) {
return $this->requestEndTime - $this->requestStartTime;
}
return microtime(true) - $this->requestStartTime;
}
/**
* @return array
* @throws DebugBarException
*/
public function collect()
{
$this->requestEndTime = microtime(true);
foreach (array_keys($this->startedMeasures) as $name) {
$this->stopMeasure($name);
}
usort($this->measures, function($a, $b) {
if ($a['start'] == $b['start']) {
return 0;
}
return $a['start'] < $b['start'] ? -1 : 1;
});
return array(
'start' => $this->requestStartTime,
'end' => $this->requestEndTime,
'duration' => $this->getRequestDuration(),
'duration_str' => $this->getDataFormatter()->formatDuration($this->getRequestDuration()),
'measures' => array_values($this->measures)
);
}
/**
* @return string
*/
public function getName()
{
return 'time';
}
/**
* @return array
*/
public function getWidgets()
{
return array(
"time" => array(
"icon" => "clock-o",
"tooltip" => "Request Duration",
"map" => "time.duration_str",
"default" => "'0ms'"
),
"timeline" => array(
"icon" => "tasks",
"widget" => "PhpDebugBar.Widgets.TimelineWidget",
"map" => "time",
"default" => "{}"
)
);
}
}