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 flush_script_unsupported(void)
34{
35	return 0;
36}
37
38static int stop_script_unsupported(void)
39{
40	return 0;
41}
42
43static void process_event_unsupported(union perf_event *event __maybe_unused,
44				      struct perf_sample *sample __maybe_unused,
45				      struct perf_evsel *evsel __maybe_unused,
46				      struct addr_location *al __maybe_unused)
47{
48}
49
50static void print_python_unsupported_msg(void)
51{
52	fprintf(stderr, "Python scripting not supported."
53		"  Install libpython and rebuild perf to enable it.\n"
54		"For example:\n  # apt-get install python-dev (ubuntu)"
55		"\n  # yum install python-devel (Fedora)"
56		"\n  etc.\n");
57}
58
59static int python_start_script_unsupported(const char *script __maybe_unused,
60					   int argc __maybe_unused,
61					   const char **argv __maybe_unused)
62{
63	print_python_unsupported_msg();
64
65	return -1;
66}
67
68static int python_generate_script_unsupported(struct pevent *pevent
69					      __maybe_unused,
70					      const char *outfile
71					      __maybe_unused)
72{
73	print_python_unsupported_msg();
74
75	return -1;
76}
77
78struct scripting_ops python_scripting_unsupported_ops = {
79	.name = "Python",
80	.start_script = python_start_script_unsupported,
81	.flush_script = flush_script_unsupported,
82	.stop_script = stop_script_unsupported,
83	.process_event = process_event_unsupported,
84	.generate_script = python_generate_script_unsupported,
85};
86
87static void register_python_scripting(struct scripting_ops *scripting_ops)
88{
89	int err;
90	err = script_spec_register("Python", scripting_ops);
91	if (err)
92		die("error registering Python script extension");
93
94	err = script_spec_register("py", scripting_ops);
95	if (err)
96		die("error registering py script extension");
97
98	scripting_context = malloc(sizeof(struct scripting_context));
99}
100
101#ifdef NO_LIBPYTHON
102void setup_python_scripting(void)
103{
104	register_python_scripting(&python_scripting_unsupported_ops);
105}
106#else
107extern struct scripting_ops python_scripting_ops;
108
109void setup_python_scripting(void)
110{
111	register_python_scripting(&python_scripting_ops);
112}
113#endif
114
115static void print_perl_unsupported_msg(void)
116{
117	fprintf(stderr, "Perl scripting not supported."
118		"  Install libperl and rebuild perf to enable it.\n"
119		"For example:\n  # apt-get install libperl-dev (ubuntu)"
120		"\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
121		"\n  etc.\n");
122}
123
124static int perl_start_script_unsupported(const char *script __maybe_unused,
125					 int argc __maybe_unused,
126					 const char **argv __maybe_unused)
127{
128	print_perl_unsupported_msg();
129
130	return -1;
131}
132
133static int perl_generate_script_unsupported(struct pevent *pevent
134					    __maybe_unused,
135					    const char *outfile __maybe_unused)
136{
137	print_perl_unsupported_msg();
138
139	return -1;
140}
141
142struct scripting_ops perl_scripting_unsupported_ops = {
143	.name = "Perl",
144	.start_script = perl_start_script_unsupported,
145	.flush_script = flush_script_unsupported,
146	.stop_script = stop_script_unsupported,
147	.process_event = process_event_unsupported,
148	.generate_script = perl_generate_script_unsupported,
149};
150
151static void register_perl_scripting(struct scripting_ops *scripting_ops)
152{
153	int err;
154	err = script_spec_register("Perl", scripting_ops);
155	if (err)
156		die("error registering Perl script extension");
157
158	err = script_spec_register("pl", scripting_ops);
159	if (err)
160		die("error registering pl script extension");
161
162	scripting_context = malloc(sizeof(struct scripting_context));
163}
164
165#ifdef NO_LIBPERL
166void setup_perl_scripting(void)
167{
168	register_perl_scripting(&perl_scripting_unsupported_ops);
169}
170#else
171extern struct scripting_ops perl_scripting_ops;
172
173void setup_perl_scripting(void)
174{
175	register_perl_scripting(&perl_scripting_ops);
176}
177#endif
178