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#!/usr/sbin/dtrace -Zs
/*
* js_cpudist.d - measure JavaScript on-CPU times for types of operation.
* Written for the JavaScript DTrace provider.
*
* $Id: js_cpudist.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_cpudist.d # hit Ctrl-C to end
*
* FIELDS:
* 1 Filename of the JavaScript program
* 2 Type of call (func/obj-new)
* 3 Name of call
*
* 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
{
self->depth++;
self->exclude[self->depth] = 0;
self->function[self->depth] = vtimestamp;
}
javascript*:::function-return
/self->function[self->depth]/
{
this->oncpu_incl = vtimestamp - self->function[self->depth];
this->oncpu_excl = this->oncpu_incl - self->exclude[self->depth];
self->function[self->depth] = 0;
self->exclude[self->depth] = 0;
this->file = basename(copyinstr(arg0));
this->name = copyinstr(arg2);
@types_incl[this->file, "func", this->name] =
quantize(this->oncpu_incl / 1000);
@types_excl[this->file, "func", this->name] =
quantize(this->oncpu_excl / 1000);
self->depth--;
self->exclude[self->depth] += this->oncpu_incl;
}
javascript*:::object-create-start
{
self->object = vtimestamp;
}
javascript*:::object-create-done
/self->object/
{
this->oncpu = vtimestamp - self->object;
self->object = 0;
this->file = basename(copyinstr(arg0));
this->name = copyinstr(arg1);
@types[this->file, "obj-new", this->name] =
quantize(this->oncpu / 1000);
self->exclude[self->depth] += this->oncpu;
}
dtrace:::END
{
printf("\nElapsed times (us),\n");
printa(" %s, %s, %s %@d\n", @types);
printf("\nExclusive function on-CPU times (us),\n");
printa(" %s, %s, %s %@d\n", @types_excl);
printf("\nInclusive function on-CPU times (us),\n");
printa(" %s, %s, %s %@d\n", @types_incl);
}
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