Root/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 <ctype.h>
26#include <errno.h>
27
28#include "../perf.h"
29#include "util.h"
30#include "trace-event.h"
31
32struct scripting_context *scripting_context;
33
34static int stop_script_unsupported(void)
35{
36    return 0;
37}
38
39static void process_event_unsupported(int cpu __unused,
40                      void *data __unused,
41                      int size __unused,
42                      unsigned long long nsecs __unused,
43                      char *comm __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 __unused,
57                       int argc __unused,
58                       const char **argv __unused)
59{
60    print_python_unsupported_msg();
61
62    return -1;
63}
64
65static int python_generate_script_unsupported(const char *outfile __unused)
66{
67    print_python_unsupported_msg();
68
69    return -1;
70}
71
72struct scripting_ops python_scripting_unsupported_ops = {
73    .name = "Python",
74    .start_script = python_start_script_unsupported,
75    .stop_script = stop_script_unsupported,
76    .process_event = process_event_unsupported,
77    .generate_script = python_generate_script_unsupported,
78};
79
80static void register_python_scripting(struct scripting_ops *scripting_ops)
81{
82    int err;
83    err = script_spec_register("Python", scripting_ops);
84    if (err)
85        die("error registering Python script extension");
86
87    err = script_spec_register("py", scripting_ops);
88    if (err)
89        die("error registering py script extension");
90
91    scripting_context = malloc(sizeof(struct scripting_context));
92}
93
94#ifdef NO_LIBPYTHON
95void setup_python_scripting(void)
96{
97    register_python_scripting(&python_scripting_unsupported_ops);
98}
99#else
100struct scripting_ops python_scripting_ops;
101
102void setup_python_scripting(void)
103{
104    register_python_scripting(&python_scripting_ops);
105}
106#endif
107
108static void print_perl_unsupported_msg(void)
109{
110    fprintf(stderr, "Perl scripting not supported."
111        " Install libperl and rebuild perf to enable it.\n"
112        "For example:\n # apt-get install libperl-dev (ubuntu)"
113        "\n # yum install 'perl(ExtUtils::Embed)' (Fedora)"
114        "\n etc.\n");
115}
116
117static int perl_start_script_unsupported(const char *script __unused,
118                     int argc __unused,
119                     const char **argv __unused)
120{
121    print_perl_unsupported_msg();
122
123    return -1;
124}
125
126static int perl_generate_script_unsupported(const char *outfile __unused)
127{
128    print_perl_unsupported_msg();
129
130    return -1;
131}
132
133struct scripting_ops perl_scripting_unsupported_ops = {
134    .name = "Perl",
135    .start_script = perl_start_script_unsupported,
136    .stop_script = stop_script_unsupported,
137    .process_event = process_event_unsupported,
138    .generate_script = perl_generate_script_unsupported,
139};
140
141static void register_perl_scripting(struct scripting_ops *scripting_ops)
142{
143    int err;
144    err = script_spec_register("Perl", scripting_ops);
145    if (err)
146        die("error registering Perl script extension");
147
148    err = script_spec_register("pl", scripting_ops);
149    if (err)
150        die("error registering pl script extension");
151
152    scripting_context = malloc(sizeof(struct scripting_context));
153}
154
155#ifdef NO_LIBPERL
156void setup_perl_scripting(void)
157{
158    register_perl_scripting(&perl_scripting_unsupported_ops);
159}
160#else
161struct scripting_ops perl_scripting_ops;
162
163void setup_perl_scripting(void)
164{
165    register_perl_scripting(&perl_scripting_ops);
166}
167#endif
168

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