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Performance tweak; close connection before running queue.

This commit is contained in:
Mike Jolley 2017-12-08 16:57:53 +00:00
parent 39b947e1ee
commit cb97f0fc80
1 changed files with 30 additions and 1 deletions
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31
includes/class-wc-background-emailer.php
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@ -37,7 +37,7 @@ class WC_Background_Emailer extends WP_Background_Process {
$this->action = 'wc_emailer';
// Dispatch queue after shutdown.
add_action( 'shutdown', array( $this, 'dispatch_queue' ) );
add_action( 'shutdown', array( $this, 'dispatch_queue' ), 100 );
parent::__construct();
}
@ -75,11 +75,40 @@ class WC_Background_Emailer extends WP_Background_Process {
return false;
}
/**
* Finishes replying to the client, but keeps the process running for further (async) code execution.
*
* @see https://core.trac.wordpress.org/ticket/41358 .
*/
protected function close_http_connection() {
// Only 1 PHP process can access a session object at a time, close this so the next request isn't kept waiting.
// @codingStandardsIgnoreStart
if ( session_id() ) {
session_write_close();
}
// @codingStandardsIgnoreEnd
wc_set_time_limit( 0 );
// fastcgi_finish_request is the cleanest way to send the response and keep the script running, but not every server has it.
if ( is_callable( 'fastcgi_finish_request' ) ) {
fastcgi_finish_request();
} else {
// Fallback: send headers and flush buffers.
if ( ! headers_sent() ) {
header( 'Connection: close' );
}
@ob_end_flush();
flush();
}
}
/**
* Save and run queue.
*/
public function dispatch_queue() {
if ( ! empty( $this->data ) ) {
$this->close_http_connection();
$this->save()->dispatch();
}
}