Cron API: Make wp-cron.php non-blocking where possible.

tellyworth · tellyworth · commit e06121f2edd5 · 2019-01-09T01:05:16.000Z
This should make cron spawning faster by ensuring requests to wp-cron.php return immediately regardless of transport method. It is enabled only on recent PHP versions with fastcgi, due to historical bugs and availability of `fastcgi_finish_request()`. This needs testing on a range of platforms, to help determine if it's safe to use in other contexts also. Props vnsavage, johnbillion, jnylen0. See #18738, #41358 git-svn-id: https://develop.svn.wordpress.org/trunk@44488 602fd350-edb4-49c9-b593-d223f7449a82
diff --git a/src/wp-cron.php b/src/wp-cron.php
@@ -18,6 +18,11 @@
 
 ignore_user_abort( true );
 
+/* Don't make the request block till we finish, if possible. */
+if ( function_exists( 'fastcgi_finish_request' ) && version_compare( phpversion(), '7.0.16', '>=' ) ) {
+	fastcgi_finish_request();
+}
+
 if ( ! empty( $_POST ) || defined( 'DOING_AJAX' ) || defined( 'DOING_CRON' ) ) {
 	die();
 }
