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Database: Add the query start time to logged query data.

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This allows debugging plugins to plot the time at which queries were executed.

Props Rarst for initial patch.

Fixes #43315

Built from https://develop.svn.wordpress.org/trunk@42789


git-svn-id: http://core.svn.wordpress.org/trunk@42619 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
John Blackbourn 2018-03-05 22:54:35 +00:00
parent ea6360b47c
commit 6c09e79cc5
2 changed files with 24 additions and 5 deletions
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2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.0-alpha-42788';
$wp_version = '5.0-alpha-42789';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

27
wp-includes/wp-db.php
View File

@ -174,10 +174,24 @@ class wpdb {
protected $col_info;
/**
* Saved queries that were executed
* Log of queries that were executed, for debugging purposes.
*
* @since 1.5.0
* @var array
* @since 2.5.0 The third element in each query log was added to record the calling functions.
* @since 5.0.0 The fourth element in each query log was added to record the start time.
*
* @var array[] {
* Array of queries that were executed.
*
* @type array ...$0 {
* Data for each query.
*
* @type string $0 The query's SQL.
* @type float $1 Total time spent on the query, in seconds.
* @type string $2 Comma separated list of the calling functions.
* @type float $3 Unix timestamp of the time at the start of the query.
* }
* }
*/
var $queries;
@ -1986,7 +2000,12 @@ class wpdb {
$this->num_queries++;
if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) {
$this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() );
$this->queries[] = array(
$query,
$this->timer_stop(),
$this->get_caller(),
$this->time_start,
);
}
}
@ -3493,7 +3512,7 @@ class wpdb {
*
* @since 2.5.0
*
* @return string|array The name of the calling function
* @return string Comma separated list of the calling functions.
*/
public function get_caller() {
return wp_debug_backtrace_summary( __CLASS__ );