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Script Loader: Improve performance of `wp_script_is()` for scripts registered with complex dependencies. 

This switches `WP_Dependencies::recurse_deps()` from recursively checking the same handles over and over again to keep a flattened array of queued items and their dependencies for faster lookup in `WP_Dependencies::query()`.

Props superdav42.
Fixes #46469.
Built from https://develop.svn.wordpress.org/trunk@47359


git-svn-id: http://core.svn.wordpress.org/trunk@47146 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Sergey Biryukov 2020-02-25 13:42:05 +00:00
parent c60ea3261f
commit 67a6527d51
2 changed files with 47 additions and 18 deletions
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63
wp-includes/class.wp-dependencies.php
View File

@ -75,6 +75,14 @@ class WP_Dependencies {
*/
public $group = 0;
/**
* Cached lookup array of flattened queued items and dependencies.
*
* @since 5.4.0
* @var array
*/
private $all_queued_deps;
/**
* Processes the items and dependencies.
*
@ -302,8 +310,13 @@ class WP_Dependencies {
public function enqueue( $handles ) {
foreach ( (array) $handles as $handle ) {
$handle = explode( '?', $handle );
if ( ! in_array( $handle[0], $this->queue ) && isset( $this->registered[ $handle[0] ] ) ) {
if ( ! in_array( $handle[0], $this->queue, true ) && isset( $this->registered[ $handle[0] ] ) ) {
$this->queue[] = $handle[0];
// Reset all dependencies so they must be recalculated in recurse_deps().
$this->all_queued_deps = null;
if ( isset( $handle[1] ) ) {
$this->args[ $handle[0] ] = $handle[1];
}
@ -325,8 +338,12 @@ class WP_Dependencies {
public function dequeue( $handles ) {
foreach ( (array) $handles as $handle ) {
$handle = explode( '?', $handle );
$key = array_search( $handle[0], $this->queue );
$key = array_search( $handle[0], $this->queue, true );
if ( false !== $key ) {
// Reset all dependencies so they must be recalculated in recurse_deps().
$this->all_queued_deps = null;
unset( $this->queue[ $key ] );
unset( $this->args[ $handle[0] ] );
}
@ -334,7 +351,7 @@ class WP_Dependencies {
}
/**
* Recursively search the passed dependency tree for $handle
* Recursively search the passed dependency tree for $handle.
*
* @since 4.0.0
*
@ -343,19 +360,31 @@ class WP_Dependencies {
* @return bool Whether the handle is found after recursively searching the dependency tree.
*/
protected function recurse_deps( $queue, $handle ) {
foreach ( $queue as $queued ) {
if ( ! isset( $this->registered[ $queued ] ) ) {
continue;
}
if ( in_array( $handle, $this->registered[ $queued ]->deps ) ) {
return true;
} elseif ( $this->recurse_deps( $this->registered[ $queued ]->deps, $handle ) ) {
return true;
}
if ( isset( $this->all_queued_deps ) ) {
return isset( $this->all_queued_deps[ $handle ] );
}
return false;
$all_deps = array_fill_keys( $queue, true );
$queues = array();
$done = array();
while ( $queue ) {
foreach ( $queue as $queued ) {
if ( ! isset( $done[ $queued ] ) && isset( $this->registered[ $queued ] ) ) {
$deps = $this->registered[ $queued ]->deps;
if ( $deps ) {
$all_deps += array_fill_keys( $deps, true );
array_push( $queues, $deps );
}
$done[ $queued ] = true;
}
}
$queue = array_pop( $queues );
}
$this->all_queued_deps = $all_deps;
return isset( $this->all_queued_deps[ $handle ] );
}
/**
@ -379,18 +408,18 @@ class WP_Dependencies {
case 'enqueued':
case 'queue':
if ( in_array( $handle, $this->queue ) ) {
if ( in_array( $handle, $this->queue, true ) ) {
return true;
}
return $this->recurse_deps( $this->queue, $handle );
case 'to_do':
case 'to_print': // Back compat.
return in_array( $handle, $this->to_do );
return in_array( $handle, $this->to_do, true );
case 'done':
case 'printed': // Back compat.
return in_array( $handle, $this->done );
return in_array( $handle, $this->done, true );
}
return false;
}

2
wp-includes/version.php
View File

@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.4-beta2-47358';
$wp_version = '5.4-beta2-47359';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.