WordPress at a glance
function is not described

_get_cron_lock() WP 3.3.0

Retrieves the cron lock.

Returns the uncached doing_cron transient.

  • Global. wpdb. $wpdb WordPress database abstraction object.

No Hooks.

Return

String/false. Value of the doing_cron transient, 0|false otherwise.

Usage

_get_cron_lock();

Code of get cron lock: wp-cron.php VER 5.0.3

<?php
function _get_cron_lock() {
	global $wpdb;

	$value = 0;
	if ( wp_using_ext_object_cache() ) {
		/*
		 * Skip local cache and force re-fetch of doing_cron transient
		 * in case another process updated the cache.
		 */
		$value = wp_cache_get( 'doing_cron', 'transient', true );
	} else {
		$row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", '_transient_doing_cron' ) );
		if ( is_object( $row ) )
			$value = $row->option_value;
	}

	return $value;
}