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 
31 struct scripting_context *scripting_context;
32 
33 static int stop_script_unsupported(void)
34 {
35 	return 0;
36 }
37 
38 static void process_event_unsupported(union perf_event *event __unused,
39 				      struct pevent *pevent __unused,
40 				      struct perf_sample *sample __unused,
41 				      struct perf_evsel *evsel __unused,
42 				      struct machine *machine __unused,
43 				      struct thread *thread __unused)
44 {
45 }
46 
47 static 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 
56 static 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 
65 static int python_generate_script_unsupported(struct pevent *pevent __unused,
66 					      const char *outfile __unused)
67 {
68 	print_python_unsupported_msg();
69 
70 	return -1;
71 }
72 
73 struct scripting_ops python_scripting_unsupported_ops = {
74 	.name = "Python",
75 	.start_script = python_start_script_unsupported,
76 	.stop_script = stop_script_unsupported,
77 	.process_event = process_event_unsupported,
78 	.generate_script = python_generate_script_unsupported,
79 };
80 
81 static void register_python_scripting(struct scripting_ops *scripting_ops)
82 {
83 	int err;
84 	err = script_spec_register("Python", scripting_ops);
85 	if (err)
86 		die("error registering Python script extension");
87 
88 	err = script_spec_register("py", scripting_ops);
89 	if (err)
90 		die("error registering py script extension");
91 
92 	scripting_context = malloc(sizeof(struct scripting_context));
93 }
94 
95 #ifdef NO_LIBPYTHON
96 void setup_python_scripting(void)
97 {
98 	register_python_scripting(&python_scripting_unsupported_ops);
99 }
100 #else
101 extern struct scripting_ops python_scripting_ops;
102 
103 void setup_python_scripting(void)
104 {
105 	register_python_scripting(&python_scripting_ops);
106 }
107 #endif
108 
109 static void print_perl_unsupported_msg(void)
110 {
111 	fprintf(stderr, "Perl scripting not supported."
112 		"  Install libperl and rebuild perf to enable it.\n"
113 		"For example:\n  # apt-get install libperl-dev (ubuntu)"
114 		"\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
115 		"\n  etc.\n");
116 }
117 
118 static int perl_start_script_unsupported(const char *script __unused,
119 					 int argc __unused,
120 					 const char **argv __unused)
121 {
122 	print_perl_unsupported_msg();
123 
124 	return -1;
125 }
126 
127 static int perl_generate_script_unsupported(struct pevent *pevent __unused,
128 					    const char *outfile __unused)
129 {
130 	print_perl_unsupported_msg();
131 
132 	return -1;
133 }
134 
135 struct scripting_ops perl_scripting_unsupported_ops = {
136 	.name = "Perl",
137 	.start_script = perl_start_script_unsupported,
138 	.stop_script = stop_script_unsupported,
139 	.process_event = process_event_unsupported,
140 	.generate_script = perl_generate_script_unsupported,
141 };
142 
143 static void register_perl_scripting(struct scripting_ops *scripting_ops)
144 {
145 	int err;
146 	err = script_spec_register("Perl", scripting_ops);
147 	if (err)
148 		die("error registering Perl script extension");
149 
150 	err = script_spec_register("pl", scripting_ops);
151 	if (err)
152 		die("error registering pl script extension");
153 
154 	scripting_context = malloc(sizeof(struct scripting_context));
155 }
156 
157 #ifdef NO_LIBPERL
158 void setup_perl_scripting(void)
159 {
160 	register_perl_scripting(&perl_scripting_unsupported_ops);
161 }
162 #else
163 extern struct scripting_ops perl_scripting_ops;
164 
165 void setup_perl_scripting(void)
166 {
167 	register_perl_scripting(&perl_scripting_ops);
168 }
169 #endif
170