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#!/usr/sbin/dtrace -Zs
/*
* js_objcpu.d - measure JavaScript object creation on-CPU time using DTrace.
* Written for the JavaScript DTrace provider.
*
* $Id: js_objcpu.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_objcpu.d # hit Ctrl-C to end
*
* 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-start
{
self->vstart = vtimestamp;
}
javascript*:::object-create-done
/self->vstart/
{
this->oncpu = vtimestamp - self->vstart;
@total = sum(this->oncpu);
@dist[copyinstr(arg1)] = quantize(this->oncpu / 1000);
self->vstart = 0;
}
dtrace:::END
{
normalize(@total, 1000000);
printa("Total object creation on-CPU time (ms): %@d\n\n", @total);
printf("Object creation on-CPU time distributions (us),\n");
printa(@dist);
}
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