1/*
2 * trace-event-scripting.  Scripting engine common and initialization code.
3 *
4 * Copyright (C) 2009-2010 Tom Zanussi <tzanussi@gmail.com>
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *  GNU General Public License for more details.
15 *
16 *  You should have received a copy of the GNU General Public License
17 *  along with this program; if not, write to the Free Software
18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19 *
20 */
21
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25#include <errno.h>
26
27#include "../perf.h"
28#include "util.h"
29#include "trace-event.h"
30
31struct scripting_context *scripting_context;
32
33static int stop_script_unsupported(void)
34{
35	return 0;
36}
37
38static void process_event_unsupported(union perf_event *event __maybe_unused,
39				      struct perf_sample *sample __maybe_unused,
40				      struct perf_evsel *evsel __maybe_unused,
41				      struct machine *machine __maybe_unused,
42				      struct thread *thread __maybe_unused,
43					  struct addr_location *al __maybe_unused)
44{
45}
46
47static void print_python_unsupported_msg(void)
48{
49	fprintf(stderr, "Python scripting not supported."
50		"  Install libpython and rebuild perf to enable it.\n"
51		"For example:\n  # apt-get install python-dev (ubuntu)"
52		"\n  # yum install python-devel (Fedora)"
53		"\n  etc.\n");
54}
55
56static int python_start_script_unsupported(const char *script __maybe_unused,
57					   int argc __maybe_unused,
58					   const char **argv __maybe_unused)
59{
60	print_python_unsupported_msg();
61
62	return -1;
63}
64
65static int python_generate_script_unsupported(struct pevent *pevent
66					      __maybe_unused,
67					      const char *outfile
68					      __maybe_unused)
69{
70	print_python_unsupported_msg();
71
72	return -1;
73}
74
75struct scripting_ops python_scripting_unsupported_ops = {
76	.name = "Python",
77	.start_script = python_start_script_unsupported,
78	.stop_script = stop_script_unsupported,
79	.process_event = process_event_unsupported,
80	.generate_script = python_generate_script_unsupported,
81};
82
83static void register_python_scripting(struct scripting_ops *scripting_ops)
84{
85	int err;
86	err = script_spec_register("Python", scripting_ops);
87	if (err)
88		die("error registering Python script extension");
89
90	err = script_spec_register("py", scripting_ops);
91	if (err)
92		die("error registering py script extension");
93
94	scripting_context = malloc(sizeof(struct scripting_context));
95}
96
97#ifdef NO_LIBPYTHON
98void setup_python_scripting(void)
99{
100	register_python_scripting(&python_scripting_unsupported_ops);
101}
102#else
103extern struct scripting_ops python_scripting_ops;
104
105void setup_python_scripting(void)
106{
107	register_python_scripting(&python_scripting_ops);
108}
109#endif
110
111static void print_perl_unsupported_msg(void)
112{
113	fprintf(stderr, "Perl scripting not supported."
114		"  Install libperl and rebuild perf to enable it.\n"
115		"For example:\n  # apt-get install libperl-dev (ubuntu)"
116		"\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
117		"\n  etc.\n");
118}
119
120static int perl_start_script_unsupported(const char *script __maybe_unused,
121					 int argc __maybe_unused,
122					 const char **argv __maybe_unused)
123{
124	print_perl_unsupported_msg();
125
126	return -1;
127}
128
129static int perl_generate_script_unsupported(struct pevent *pevent
130					    __maybe_unused,
131					    const char *outfile __maybe_unused)
132{
133	print_perl_unsupported_msg();
134
135	return -1;
136}
137
138struct scripting_ops perl_scripting_unsupported_ops = {
139	.name = "Perl",
140	.start_script = perl_start_script_unsupported,
141	.stop_script = stop_script_unsupported,
142	.process_event = process_event_unsupported,
143	.generate_script = perl_generate_script_unsupported,
144};
145
146static void register_perl_scripting(struct scripting_ops *scripting_ops)
147{
148	int err;
149	err = script_spec_register("Perl", scripting_ops);
150	if (err)
151		die("error registering Perl script extension");
152
153	err = script_spec_register("pl", scripting_ops);
154	if (err)
155		die("error registering pl script extension");
156
157	scripting_context = malloc(sizeof(struct scripting_context));
158}
159
160#ifdef NO_LIBPERL
161void setup_perl_scripting(void)
162{
163	register_perl_scripting(&perl_scripting_unsupported_ops);
164}
165#else
166extern struct scripting_ops perl_scripting_ops;
167
168void setup_perl_scripting(void)
169{
170	register_perl_scripting(&perl_scripting_ops);
171}
172#endif
173