js_objnew.d revision 235368
1235368Sgnn#!/usr/sbin/dtrace -Zs 2235368Sgnn/* 3235368Sgnn * js_objnew.d - count JavaScript object creation using DTrace. 4235368Sgnn * Written for the JavaScript DTrace provider. 5235368Sgnn * 6235368Sgnn * $Id: js_objnew.d 63 2007-10-04 04:34:38Z brendan $ 7235368Sgnn * 8235368Sgnn * This traces JavaScript activity from all browsers running on the system 9235368Sgnn * with JavaScript provider support. 10235368Sgnn * 11235368Sgnn * USAGE: js_objnew.d # hit Ctrl-C to end 12235368Sgnn * 13235368Sgnn * FIELDS: 14235368Sgnn * FILE Filename of the JavaScript program 15235368Sgnn * CLASS Class of new object 16235368Sgnn * COUNT Number of object creations during tracing 17235368Sgnn * 18235368Sgnn * Filename and class names are printed if available. 19235368Sgnn * 20235368Sgnn * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 21235368Sgnn * 22235368Sgnn * CDDL HEADER START 23235368Sgnn * 24235368Sgnn * The contents of this file are subject to the terms of the 25235368Sgnn * Common Development and Distribution License, Version 1.0 only 26235368Sgnn * (the "License"). You may not use this file except in compliance 27235368Sgnn * with the License. 28235368Sgnn * 29235368Sgnn * You can obtain a copy of the license at Docs/cddl1.txt 30235368Sgnn * or http://www.opensolaris.org/os/licensing. 31235368Sgnn * See the License for the specific language governing permissions 32235368Sgnn * and limitations under the License. 33235368Sgnn * 34235368Sgnn * CDDL HEADER END 35235368Sgnn * 36235368Sgnn * 09-Sep-2007 Brendan Gregg Created this. 37235368Sgnn */ 38235368Sgnn 39235368Sgnn#pragma D option quiet 40235368Sgnn 41235368Sgnndtrace:::BEGIN 42235368Sgnn{ 43235368Sgnn printf("Tracing... Hit Ctrl-C to end.\n"); 44235368Sgnn} 45235368Sgnn 46235368Sgnnjavascript*:::object-create-done 47235368Sgnn{ 48235368Sgnn @objs[basename(copyinstr(arg0)), copyinstr(arg1)] = count(); 49235368Sgnn} 50235368Sgnn 51235368Sgnndtrace:::END 52235368Sgnn{ 53235368Sgnn printf(" %-24s %-36s %8s\n", "FILE", "CLASS", "COUNT"); 54235368Sgnn printa(" %-24.24s %-36s %@8d\n", @objs); 55235368Sgnn} 56