xref: /freebsd-9.3-release/cddl/contrib/dtracetoolkit/JavaScript/js_objnew.d

#!/usr/sbin/dtrace -Zs
/*
 * js_objnew.d - count JavaScript object creation using DTrace.
 *               Written for the JavaScript DTrace provider.
 *
 * $Id: js_objnew.d 63 2007-10-04 04:34:38Z brendan $
 *
 * 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);
}