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Felix Förtsch
@@ -0,0 +1,235 @@
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<?php
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/**
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* Plugin Name: Debug Bar Slow Actions
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* Description: Easily find the slowest actions and filters during a page request.
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* Version: 0.8.4
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* Author: Konstantin Kovshenin
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* Author URI: http://kovshenin.com
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* License: GPLv2 or later
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*/
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class Debug_Bar_Slow_Actions {
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public $start;
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public $flow;
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function __construct() {
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$this->start = microtime( true );
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$this->flow = array();
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add_action( 'all', array( $this, 'time_start' ) );
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add_filter( 'debug_bar_panels', array( $this, 'debug_bar_panels' ), 9000 );
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// add_action( 'wp_footer', function() { print_r( $this->flow ); }, 9000 );
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}
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function time_start() {
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if ( ! isset( $this->flow[ current_filter() ] ) ) {
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$this->flow[ current_filter() ] = array(
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'count' => 0,
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'stack' => array(),
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'time' => array(),
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'callbacks' => array(),
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);
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// @todo: add support for nesting filters, see #17817
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add_action( current_filter(), array( $this, 'time_stop' ), 9000 );
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}
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$count = ++$this->flow[ current_filter() ]['count'];
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array_push( $this->flow[ current_filter() ]['stack'], array( 'start' => microtime( true ) ) );
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}
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function time_stop( $value = null ) {
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$time = array_pop( $this->flow[ current_filter() ]['stack'] );
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$time['stop'] = microtime( true );
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array_push( $this->flow[ current_filter() ]['time'], $time );
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// In case this was a filter.
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return $value;
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}
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function debug_bar_panels( $panels ) {
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require_once( dirname( __FILE__ ) . '/class-debug-bar-slow-actions-panel.php' );
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$panel = new Debug_Bar_Slow_Actions_Panel( 'Slow Actions' );
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$panel->set_callback( array( $this, 'panel_callback' ) );
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$panels[] = $panel;
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return $panels;
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}
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function panel_callback() {
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// Hack wp_footer: this callback is executed late into wp_footer, but not after, so
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// let's assume it is the last call in wp_footer and manually stop the timer, otherwise
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// we won't get a wp_footer entry in the output.
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if ( ! empty( $this->flow['wp_footer']['stack'] ) ) {
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$time = array_pop( $this->flow['wp_footer']['stack'] );
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if ( $time && empty( $time['stop'] ) ) {
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$time['stop'] = microtime( true );
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array_push( $this->flow['wp_footer']['time'], $time );
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}
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}
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printf( '<div id="dbsa-container">%s</div>', $this->output() );
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}
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function sort_actions_by_time( $a, $b ) {
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if ( $a['total'] == $b['total'] )
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return 0;
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return ( $a['total'] > $b['total'] ) ? -1 : 1;
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}
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function output() {
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global $wp_filter;
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$output = '';
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$total_actions = 0;
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$total_actions_time = 0;
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foreach ( $this->flow as $action => $data ) {
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$total = 0;
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foreach ( $data['time'] as $time )
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$total += ( $time['stop'] - $time['start'] ) * 1000;
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$this->flow[ $action ]['total'] = $total;
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$total_actions_time += $total;
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$total_actions += $data['count'];
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$this->flow[ $action ]['callbacks_count'] = 0;
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// Add all filter callbacks.
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foreach ( $wp_filter[ $action ] as $priority => $callbacks ) {
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if ( ! isset( $this->flow[ $action ]['callbacks'][ $priority ] ) ) {
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$this->flow[ $action ]['callbacks'][ $priority ] = array();
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}
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foreach ( $callbacks as $callback ) {
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if ( is_array( $callback['function'] ) && count( $callback['function'] ) == 2 ) {
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list( $object_or_class, $method ) = $callback['function'];
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if ( is_object( $object_or_class ) ) {
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$object_or_class = get_class( $object_or_class );
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}
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$this->flow[ $action ]['callbacks'][ $priority ][] = sprintf( '%s::%s', $object_or_class, $method );
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} elseif ( is_object( $callback['function'] ) ) {
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// Probably an anonymous function.
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$this->flow[ $action ]['callbacks'][ $priority ][] = get_class( $callback['function'] );
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} else {
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$this->flow[ $action ]['callbacks'][ $priority ][] = $callback['function'];
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}
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$this->flow[ $action ]['callbacks_count']++;
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}
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}
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}
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uasort( $this->flow, array( $this, 'sort_actions_by_time' ) );
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$slowest_action = reset( $this->flow );
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$table = '<table>';
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$table .= '<tr>';
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$table .= '<th>Action or Filter</th>';
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$table .= '<th style="text-align: right;">Callbacks</th>';
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$table .= '<th style="text-align: right;">Calls</th>';
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$table .= '<th style="text-align: right;">Per Call</th>';
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$table .= '<th style="text-align: right;">Total</th>';
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$table .= '</tr>';
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foreach ( array_slice( $this->flow, 0, 100 ) as $action => $data ) {
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$callbacks_output = '<ol class="dbsa-callbacks">';
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foreach ( $data['callbacks'] as $priority => $callbacks ) {
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foreach ( $callbacks as $callback ) {
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$callbacks_output .= sprintf( '<li value="%d">%s</li>', $priority, $callback );
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}
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}
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$callbacks_output .= '</ol>';
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$table .= '<tr>';
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$table .= sprintf( '<td><span class="dbsa-action">%s</span> %s</td>', $action, $callbacks_output );
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$table .= sprintf( '<td style="text-align: right;">%d</td>', $data['callbacks_count'] );
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$table .= sprintf( '<td style="text-align: right;">%d</td>', $data['count'] );
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$table .= sprintf( '<td style="text-align: right;">%.2fms</td>', $data['total'] / $data['count'] );
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$table .= sprintf( '<td style="text-align: right;">%.2fms</td>', $data['total'] );
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$table .= '</tr>';
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}
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$table .= '</table>';
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$output .= sprintf( '<h2><span>Unique actions:</span> %d</h2>', count( $this->flow ) );
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$output .= sprintf( '<h2><span>Total actions:</span> %d</h2>', $total_actions );
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$output .= sprintf( '<h2><span>Actions Execution time:</span> %.2fms</h2>', $total_actions_time );
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$output .= sprintf( '<h2><span>Slowest Action:</span> %.2fms</h2>', $slowest_action['total'] );
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$output .= '<div class="clear"></div>';
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$output .= '<h3>Slow Actions</h3>';
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$output .= $table;
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$output .= <<<EOD
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<style>
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#dbsa-container table {
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border-spacing: 0;
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width: 100%;
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}
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#dbsa-container td,
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#dbsa-container th {
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padding: 6px;
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border-bottom: solid 1px #ddd;
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}
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#dbsa-container td {
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font: 12px Monaco, 'Courier New', Courier, Fixed !important;
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line-height: 180% !important;
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cursor: pointer;
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vertical-align: top;
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}
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#dbsa-container tr:hover {
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background: #e8e8e8;
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}
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#dbsa-container th {
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font-weight: 600;
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}
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#dbsa-container h3 {
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float: none;
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clear: both;
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font-family: georgia, times, serif;
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font-size: 22px;
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margin: 15px 10px 15px 0 !important;
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}
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ol.dbsa-callbacks {
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list-style: decimal;
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padding-left: 50px;
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color: #777;
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margin-top: 10px;
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display: none;
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}
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.dbsa-expanded ol.dbsa-callbacks {
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display: block;
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}
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.dbsa-action:before {
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content: '\\f140';
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display: inline-block;
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-webkit-font-smoothing: antialiased;
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font: normal 20px/1 'dashicons';
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vertical-align: top;
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color: #aaa;
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margin-right: 4px;
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margin-left: -6px;
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}
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.dbsa-expanded .dbsa-action:before {
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content: '\\f142';
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}
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</style>
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EOD;
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$output .= <<<EOD
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<script>
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(function($){
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$('#dbsa-container td').on('click', function() {
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$(this).parents('tr').toggleClass('dbsa-expanded');
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});
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}(jQuery));
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</script>
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EOD;
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return $output;
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}
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}
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new Debug_Bar_Slow_Actions;
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