GNU Linux-libre 4.19.211-gnu1
[releases.git] / tools / perf / util / trace-event-scripting.c
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 "debug.h"
29 #include "util.h"
30 #include "trace-event.h"
31
32 struct scripting_context *scripting_context;
33
34 static int flush_script_unsupported(void)
35 {
36         return 0;
37 }
38
39 static int stop_script_unsupported(void)
40 {
41         return 0;
42 }
43
44 static void process_event_unsupported(union perf_event *event __maybe_unused,
45                                       struct perf_sample *sample __maybe_unused,
46                                       struct perf_evsel *evsel __maybe_unused,
47                                       struct addr_location *al __maybe_unused)
48 {
49 }
50
51 static void print_python_unsupported_msg(void)
52 {
53         fprintf(stderr, "Python scripting not supported."
54                 "  Install libpython and rebuild perf to enable it.\n"
55                 "For example:\n  # apt-get install python-dev (ubuntu)"
56                 "\n  # yum install python-devel (Fedora)"
57                 "\n  etc.\n");
58 }
59
60 static int python_start_script_unsupported(const char *script __maybe_unused,
61                                            int argc __maybe_unused,
62                                            const char **argv __maybe_unused)
63 {
64         print_python_unsupported_msg();
65
66         return -1;
67 }
68
69 static int python_generate_script_unsupported(struct tep_handle *pevent
70                                               __maybe_unused,
71                                               const char *outfile
72                                               __maybe_unused)
73 {
74         print_python_unsupported_msg();
75
76         return -1;
77 }
78
79 struct scripting_ops python_scripting_unsupported_ops = {
80         .name = "Python",
81         .start_script = python_start_script_unsupported,
82         .flush_script = flush_script_unsupported,
83         .stop_script = stop_script_unsupported,
84         .process_event = process_event_unsupported,
85         .generate_script = python_generate_script_unsupported,
86 };
87
88 static void register_python_scripting(struct scripting_ops *scripting_ops)
89 {
90         if (scripting_context == NULL)
91                 scripting_context = malloc(sizeof(*scripting_context));
92
93        if (scripting_context == NULL ||
94            script_spec_register("Python", scripting_ops) ||
95            script_spec_register("py", scripting_ops)) {
96                 pr_err("Error registering Python script extension: disabling it\n");
97                 zfree(&scripting_context);
98         }
99 }
100
101 #ifndef HAVE_LIBPYTHON_SUPPORT
102 void setup_python_scripting(void)
103 {
104         register_python_scripting(&python_scripting_unsupported_ops);
105 }
106 #else
107 extern struct scripting_ops python_scripting_ops;
108
109 void setup_python_scripting(void)
110 {
111         register_python_scripting(&python_scripting_ops);
112 }
113 #endif
114
115 static 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
124 static 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
133 static int perl_generate_script_unsupported(struct tep_handle *pevent
134                                             __maybe_unused,
135                                             const char *outfile __maybe_unused)
136 {
137         print_perl_unsupported_msg();
138
139         return -1;
140 }
141
142 struct 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
151 static void register_perl_scripting(struct scripting_ops *scripting_ops)
152 {
153         if (scripting_context == NULL)
154                 scripting_context = malloc(sizeof(*scripting_context));
155
156        if (scripting_context == NULL ||
157            script_spec_register("Perl", scripting_ops) ||
158            script_spec_register("pl", scripting_ops)) {
159                 pr_err("Error registering Perl script extension: disabling it\n");
160                 zfree(&scripting_context);
161         }
162 }
163
164 #ifndef HAVE_LIBPERL_SUPPORT
165 void setup_perl_scripting(void)
166 {
167         register_perl_scripting(&perl_scripting_unsupported_ops);
168 }
169 #else
170 extern struct scripting_ops perl_scripting_ops;
171
172 void setup_perl_scripting(void)
173 {
174         register_perl_scripting(&perl_scripting_ops);
175 }
176 #endif