* @since 2.0
*/
class ProfilingPanel extends Panel
{
public function getName()
{
return 'Profiling';
}
public function getDetail()
{
$messages = $this->data['messages'];
$timings = array();
$stack = array();
foreach ($messages as $i => $log) {
list($token, $level, $category, $timestamp) = $log;
$log[4] = $i;
if ($level == Logger::LEVEL_PROFILE_BEGIN) {
$stack[] = $log;
} elseif ($level == Logger::LEVEL_PROFILE_END) {
if (($last = array_pop($stack)) !== null && $last[0] === $token) {
$timings[$last[4]] = array(count($stack), $token, $category, $timestamp - $last[3]);
}
}
}
$now = microtime(true);
while (($last = array_pop($stack)) !== null) {
$delta = $now - $last[3];
$timings[$last[4]] = array(count($stack), $last[0], $last[2], $delta);
}
ksort($timings);
$rows = array();
foreach ($timings as $timing) {
$time = sprintf('%.1f ms', $timing[3] * 1000);
$procedure = str_repeat('→', $timing[0]) . Html::encode($timing[1]);
$category = Html::encode($timing[2]);
$rows[] = "| $time | $category | $procedure | ";
}
$rows = implode("\n", $rows);
return <<Performance Profiling
| Time |
Category |
Procedure |
$rows
EOD;
}
public function save()
{
$target = $this->module->logTarget;
$messages = $target->filterMessages($target->messages, Logger::LEVEL_PROFILE);
return array(
'messages' => $messages,
);
}
}