#!/usr/sbin/dtrace -Zs /* * js_objnew.d - count JavaScript object creation using DTrace. * Written for the JavaScript DTrace provider. * * $Id: js_objnew.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * This traces JavaScript activity from all browsers running on the system * with JavaScript provider support. * * USAGE: js_objnew.d # hit Ctrl-C to end * * FIELDS: * FILE Filename of the JavaScript program * CLASS Class of new object * COUNT Number of object creations during tracing * * Filename and class names are printed if available. * * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. * * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at Docs/cddl1.txt * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * CDDL HEADER END * * 09-Sep-2007 Brendan Gregg Created this. */ #pragma D option quiet dtrace:::BEGIN { printf("Tracing... Hit Ctrl-C to end.\n"); } javascript*:::object-create-done { @objs[basename(copyinstr(arg0)), copyinstr(arg1)] = count(); } dtrace:::END { printf(" %-24s %-36s %8s\n", "FILE", "CLASS", "COUNT"); printa(" %-24.24s %-36s %@8d\n", @objs); }