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 
32 struct scripting_context *scripting_context;
33 
34 static int stop_script_unsupported(void)
35 {
36 	return 0;
37 }
38 
39 static void process_event_unsupported(union perf_event *event __unused,
40 				      struct perf_sample *sample __unused,
41 				      struct perf_session *session __unused,
42 				      struct thread *thread __unused)
43 {
44 }
45 
46 static void print_python_unsupported_msg(void)
47 {
48 	fprintf(stderr, "Python scripting not supported."
49 		"  Install libpython and rebuild perf to enable it.\n"
50 		"For example:\n  # apt-get install python-dev (ubuntu)"
51 		"\n  # yum install python-devel (Fedora)"
52 		"\n  etc.\n");
53 }
54 
55 static int python_start_script_unsupported(const char *script __unused,
56 					   int argc __unused,
57 					   const char **argv __unused)
58 {
59 	print_python_unsupported_msg();
60 
61 	return -1;
62 }
63 
64 static int python_generate_script_unsupported(const char *outfile __unused)
65 {
66 	print_python_unsupported_msg();
67 
68 	return -1;
69 }
70 
71 struct scripting_ops python_scripting_unsupported_ops = {
72 	.name = "Python",
73 	.start_script = python_start_script_unsupported,
74 	.stop_script = stop_script_unsupported,
75 	.process_event = process_event_unsupported,
76 	.generate_script = python_generate_script_unsupported,
77 };
78 
79 static void register_python_scripting(struct scripting_ops *scripting_ops)
80 {
81 	int err;
82 	err = script_spec_register("Python", scripting_ops);
83 	if (err)
84 		die("error registering Python script extension");
85 
86 	err = script_spec_register("py", scripting_ops);
87 	if (err)
88 		die("error registering py script extension");
89 
90 	scripting_context = malloc(sizeof(struct scripting_context));
91 }
92 
93 #ifdef NO_LIBPYTHON
94 void setup_python_scripting(void)
95 {
96 	register_python_scripting(&python_scripting_unsupported_ops);
97 }
98 #else
99 extern struct scripting_ops python_scripting_ops;
100 
101 void setup_python_scripting(void)
102 {
103 	register_python_scripting(&python_scripting_ops);
104 }
105 #endif
106 
107 static void print_perl_unsupported_msg(void)
108 {
109 	fprintf(stderr, "Perl scripting not supported."
110 		"  Install libperl and rebuild perf to enable it.\n"
111 		"For example:\n  # apt-get install libperl-dev (ubuntu)"
112 		"\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
113 		"\n  etc.\n");
114 }
115 
116 static int perl_start_script_unsupported(const char *script __unused,
117 					 int argc __unused,
118 					 const char **argv __unused)
119 {
120 	print_perl_unsupported_msg();
121 
122 	return -1;
123 }
124 
125 static int perl_generate_script_unsupported(const char *outfile __unused)
126 {
127 	print_perl_unsupported_msg();
128 
129 	return -1;
130 }
131 
132 struct scripting_ops perl_scripting_unsupported_ops = {
133 	.name = "Perl",
134 	.start_script = perl_start_script_unsupported,
135 	.stop_script = stop_script_unsupported,
136 	.process_event = process_event_unsupported,
137 	.generate_script = perl_generate_script_unsupported,
138 };
139 
140 static void register_perl_scripting(struct scripting_ops *scripting_ops)
141 {
142 	int err;
143 	err = script_spec_register("Perl", scripting_ops);
144 	if (err)
145 		die("error registering Perl script extension");
146 
147 	err = script_spec_register("pl", scripting_ops);
148 	if (err)
149 		die("error registering pl script extension");
150 
151 	scripting_context = malloc(sizeof(struct scripting_context));
152 }
153 
154 #ifdef NO_LIBPERL
155 void setup_perl_scripting(void)
156 {
157 	register_perl_scripting(&perl_scripting_unsupported_ops);
158 }
159 #else
160 extern struct scripting_ops perl_scripting_ops;
161 
162 void setup_perl_scripting(void)
163 {
164 	register_perl_scripting(&perl_scripting_ops);
165 }
166 #endif
167