#!/usr/sbin/dtrace -Zs /* * js_calls.d - count JavaScript calls using DTrace. * Written for the JavaScript DTrace provider. * * $Id: js_calls.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ * * This traces activity from all browsers on the system that are * running with JavaScript provider support. * * USAGE: js_calls.d # hit Ctrl-C to end * * FIELDS: * FILE Filename of the JavaScript program * TYPE Type of call (func/obj-new/...) * NAME Descriptive name of call * COUNT Number of calls during sample * * Filename and function 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*:::function-entry { this->name = copyinstr(arg2); @calls[basename(copyinstr(arg0)), "func", this->name] = count(); } javascript*:::execute-start { this->filename = basename(copyinstr(arg0)); @calls[this->filename, "exec", "."] = count(); } javascript*:::object-create-start { this->name = copyinstr(arg1); this->filename = basename(copyinstr(arg0)); @calls[this->filename, "obj-new", this->name] = count(); } javascript*:::object-finalize { this->name = copyinstr(arg1); @calls["", "obj-free", this->name] = count(); } dtrace:::END { printf(" %-24s %-10s %-30s %8s\n", "FILE", "TYPE", "NAME", "CALLS"); printa(" %-24s %-10s %-30s %@8d\n", @calls); }