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First pass at profiling intermediate stages

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This commit is contained in:
Daniel Bachhuber 2016-10-09 10:33:48 -07:00
parent 569e107293
commit 7bb69131f2
1 changed files with 104 additions and 5 deletions
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109
inc/class-profiler.php
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@ -40,6 +40,12 @@ class Profiler {
private $previous_filter_callbacks = null;
private $filter_depth = 0;
private $tick_callback = null;
private $tick_start_time = null;
private $tick_query_offset = null;
private $tick_cache_hit_offset = null;
private $tick_cache_miss_offset = null;
public function __construct( $type, $focus ) {
$this->type = $type;
$this->focus = $focus;
@ -107,11 +113,20 @@ class Profiler {
$this->previous_filter_callbacks = null;
}
if ( 'hook' === $this->type
&& ( $current_filter === $this->focus || true === $this->focus )
&& 0 === $this->filter_depth ) {
$this->wrap_current_filter_callbacks( $current_filter );
if ( 'hook' === $this->type && 0 === $this->filter_depth ) {
if ( $current_filter === $this->focus || true === $this->focus ) {
$this->wrap_current_filter_callbacks( $current_filter );
} else if ( ':before' === substr( $this->focus, -7, 7 ) && $current_filter === substr( $this->focus, 0, -7 ) ) {
unregister_tick_function( array( $this, 'handle_function_tick' ) );
foreach( $this->loggers as $hash => $logger ) {
list( $name, $location ) = self::get_name_location_from_callback( $logger['callback'] );
$logger['callback'] = $name;
$logger['location'] = $location;
$this->loggers[ $hash ] = new Logger( $logger );
}
}
}
$this->filter_depth++;
WP_CLI::add_wp_hook( $current_filter, array( $this, 'wp_hook_end' ), 9999 );
@ -181,9 +196,93 @@ class Profiler {
$this->filter_depth--;
$stage_hooks = array();
foreach( $this->stage_hooks as $hooks ) {
$stage_hooks = array_merge( $stage_hooks, $hooks );
}
if ( 'hook' === $this->type
&& 0 === $this->filter_depth
&& ':before' === substr( $this->focus, -7, 7 ) ) {
$key = array_search( $current_filter, $stage_hooks );
if ( false !== $key
&& isset( $stage_hooks[ $key + 1 ] )
&& $stage_hooks[ $key + 1 ] === substr( $this->focus, 0, -7 ) ) {
register_tick_function( array( $this, 'handle_function_tick' ) );
declare( ticks = 1 );
}
}
return $filter_value;
}
/**
* Handle the tick of a function
*/
public function handle_function_tick() {
global $wpdb, $wp_object_cache;
if ( ! is_null( $this->tick_start_time ) ) {
$time = microtime( true ) - $this->tick_start_time;
$callback_hash = md5( serialize( $this->tick_callback ) );
if ( ! isset( $this->loggers[ $callback_hash ] ) ) {
$this->loggers[ $callback_hash ] = array(
'callback' => $this->tick_callback,
'time' => 0,
'query_time' => 0,
'query_count' => 0,
'cache_hits' => 0,
'cache_misses' => 0,
'cache_ratio' => null,
);
}
$this->loggers[ $callback_hash ]['time'] += $time;
if ( isset( $wpdb ) ) {
for ( $i = $this->tick_query_offset; $i < count( $wpdb->queries ); $i++ ) {
$this->loggers[ $callback_hash ]['query_time'] += $wpdb->queries[ $i ][1];
$this->loggers[ $callback_hash ]['query_count']++;
}
}
if ( isset( $wp_object_cache ) ) {
$hits = ! empty( $wp_object_cache->cache_hits ) ? $wp_object_cache->cache_hits : 0;
$misses = ! empty( $wp_object_cache->cache_misses ) ? $wp_object_cache->cache_misses : 0;
$this->loggers[ $callback_hash ]['cache_hits'] = ( $hits - $this->tick_cache_hit_offset ) + $this->loggers[ $callback_hash ]['cache_hits'];
$this->loggers[ $callback_hash ]['cache_misses'] = ( $misses - $this->tick_cache_miss_offset ) + $this->loggers[ $callback_hash ]['cache_misses'];
$total = $this->loggers[ $callback_hash ]['cache_hits'] + $this->loggers[ $callback_hash ]['cache_misses'];
if ( $total ) {
$ratio = ( $this->loggers[ $callback_hash ]['cache_hits'] / $total ) * 100;
$this->loggers[ $callback_hash ]['cache_ratio'] = round( $ratio, 2 ) . '%';
}
}
}
$bt = debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS | DEBUG_BACKTRACE_PROVIDE_OBJECT, 2 );
$frame = $bt[0];
if ( isset( $bt[1] ) ) {
$frame = $bt[1];
}
$callback = '';
if ( in_array( strtolower( $frame['function'] ), array( 'include', 'require', 'include_once', 'require_once' ) ) ) {
$callback = $frame['args'][0];
} else if ( isset( $frame['object'] ) && method_exists( $frame['object'], $frame['function'] ) ) {
$callback = array( $frame['object'], $frame['function'] );
} else if ( isset( $frame['class'] ) && method_exists( $frame['class'], $frame['function'] ) ) {
$callback = array( $frame['class'], $frame['function'] );
} elseif ( ! empty( $frame['function'] ) && function_exists( $frame['function'] ) ) {
$callback = $frame['function'];
}
$this->tick_callback = $callback;
$this->tick_start_time = microtime( true );
$this->tick_query_offset = ! empty( $wpdb->queries ) ? count( $wpdb->queries ) : 0;
$this->tick_cache_hit_offset = ! empty( $wp_object_cache->cache_hits ) ? $wp_object_cache->cache_hits : 0;
$this->tick_cache_miss_offset = ! empty( $wp_object_cache->cache_misses ) ? $wp_object_cache->cache_misses : 0;
}
/**
* Profiling request time for any active Loggers
*/
@ -299,7 +398,7 @@ class Profiler {
} elseif ( is_object( $callback ) && is_a( $callback, 'Closure' ) ) {
$reflection = new \ReflectionFunction( $callback );
$name = 'function(){}';
} else if ( is_string( $callback ) ) {
} else if ( is_string( $callback ) && function_exists( $callback ) ) {
$reflection = new \ReflectionFunction( $callback );
$name = $callback . '()';
}