1#!/usr/sbin/dtrace -Zs
2/*
3 * php_flow.d - snoop PHP execution showing function flow.
4 *              Written for the PHP DTrace provider.
5 *
6 * $Id: php_flow.d 53 2007-09-24 04:58:38Z brendan $
7 *
8 * This traces PHP activity from all PHP programs on the system
9 * running with PHP provider support.
10 *
11 * USAGE: php_flow.d			# hit Ctrl-C to end
12 *
13 * This watches PHP function entries and returns, and indents child
14 * function calls.
15 *
16 * FIELDS:
17 *		C		CPU-id
18 *		TIME(us)	Time since boot, us
19 *		FILE		Filename that this function belongs to
20 *		FUNC		Function name
21 *
22 * LEGEND:
23 *		->		function entry
24 *		<-		function return
25 *
26 * WARNING: Watch the first column carefully, it prints the CPU-id. If it
27 * changes, then it is very likely that the output has been shuffled.
28 *
29 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
30 *
31 * CDDL HEADER START
32 *
33 *  The contents of this file are subject to the terms of the
34 *  Common Development and Distribution License, Version 1.0 only
35 *  (the "License").  You may not use this file except in compliance
36 *  with the License.
37 *
38 *  You can obtain a copy of the license at Docs/cddl1.txt
39 *  or http://www.opensolaris.org/os/licensing.
40 *  See the License for the specific language governing permissions
41 *  and limitations under the License.
42 *
43 * CDDL HEADER END
44 *
45 * 09-Sep-2007	Brendan Gregg	Created this.
46 */
47
48#pragma D option quiet
49#pragma D option switchrate=10
50
51self int depth;
52
53dtrace:::BEGIN
54{
55	printf("%3s %-16s %-16s -- %s\n", "C", "TIME(us)", "FILE", "FUNC");
56}
57
58php*:::function-entry
59/arg0/
60{
61	printf("%3d %-16d %-16s %*s-> %s\n", cpu, timestamp / 1000,
62	    basename(copyinstr(arg1)), self->depth * 2, "", copyinstr(arg0));
63	self->depth++;
64}
65
66php*:::function-return
67/arg0/
68{
69	self->depth -= self->depth > 0 ? 1 : 0;
70	printf("%3d %-16d %-16s %*s<- %s\n", cpu, timestamp / 1000,
71	    basename(copyinstr(arg1)), self->depth * 2, "", copyinstr(arg0));
72}
73