js_cpudist.d revision 235368 
1#!/usr/sbin/dtrace -Zs
2/*
3 * js_cpudist.d - measure JavaScript on-CPU times for types of operation.
4 *                 Written for the JavaScript DTrace provider.
5 *
6 * $Id: js_cpudist.d 63 2007-10-04 04:34:38Z brendan $
7 *
8 * This traces JavaScript activity from all browsers running on the system with
9 * JavaScript provider support.
10 *
11 * USAGE: js_cpudist.d 		# hit Ctrl-C to end
12 *
13 * FIELDS:
14 *		1		Filename of the JavaScript program
15 *		2		Type of call (func/obj-new)
16 *		3		Name of call
17 *
18 * Filename and function names are printed if available.
19 *
20 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
21 *
22 * CDDL HEADER START
23 *
24 *  The contents of this file are subject to the terms of the
25 *  Common Development and Distribution License, Version 1.0 only
26 *  (the "License").  You may not use this file except in compliance
27 *  with the License.
28 *
29 *  You can obtain a copy of the license at Docs/cddl1.txt
30 *  or http://www.opensolaris.org/os/licensing.
31 *  See the License for the specific language governing permissions
32 *  and limitations under the License.
33 *
34 * CDDL HEADER END
35 *
36 * 09-Sep-2007	Brendan Gregg	Created this.
37 */
38
39#pragma D option quiet
40
41dtrace:::BEGIN
42{
43	printf("Tracing... Hit Ctrl-C to end.\n");
44}
45
46javascript*:::function-entry
47{
48	self->depth++;
49	self->exclude[self->depth] = 0;
50	self->function[self->depth] = vtimestamp;
51}
52
53javascript*:::function-return
54/self->function[self->depth]/
55{
56	this->oncpu_incl = vtimestamp - self->function[self->depth];
57	this->oncpu_excl = this->oncpu_incl - self->exclude[self->depth];
58	self->function[self->depth] = 0;
59	self->exclude[self->depth] = 0;
60	this->file = basename(copyinstr(arg0));
61	this->name = copyinstr(arg2);
62
63	@types_incl[this->file, "func", this->name] =
64	    quantize(this->oncpu_incl / 1000);
65	@types_excl[this->file, "func", this->name] =
66	    quantize(this->oncpu_excl / 1000);
67
68	self->depth--;
69	self->exclude[self->depth] += this->oncpu_incl;
70}
71
72javascript*:::object-create-start
73{
74	self->object = vtimestamp;
75}
76
77javascript*:::object-create-done
78/self->object/
79{
80	this->oncpu = vtimestamp - self->object;
81	self->object = 0;
82	this->file = basename(copyinstr(arg0));
83	this->name = copyinstr(arg1);
84
85	@types[this->file, "obj-new", this->name] =
86	    quantize(this->oncpu / 1000);
87
88	self->exclude[self->depth] += this->oncpu;
89}
90
91dtrace:::END
92{
93	printf("\nElapsed times (us),\n");
94	printa("   %s, %s, %s %@d\n", @types);
95
96	printf("\nExclusive function on-CPU times (us),\n");
97	printa("   %s, %s, %s %@d\n", @types_excl);
98
99	printf("\nInclusive function on-CPU times (us),\n");
100	printa("   %s, %s, %s %@d\n", @types_incl);
101}
102