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#!/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);
}
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