pj-profiling.php

<?php
/** XHProf configuration */
if ( isset( $_REQUEST['pressjitsu-profile'] ) && $_REQUEST['pressjitsu-profile'] == 'enable' ) {
	xhprof_enable( XHPROF_FLAGS_MEMORY | XHPROF_FLAGS_CPU );
	ob_start();

	register_shutdown_function( function() {
		ob_end_clean();
		header( 'Content-type: application/octet-stream' );
		header( sprintf( 'Content-Disposition: attachment; filename="%d.perf.xhprof"', time() ) );
		echo serialize( xhprof_disable() );
		exit;
	});
}