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(int cpu __unused,
40 				      void *data __unused,
41 				      int size __unused,
42 				      unsigned long long nsecs __unused,
43 				      char *comm __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(const char *outfile __unused)
66 {
67 	print_python_unsupported_msg();
68 
69 	return -1;
70 }
71 
72 struct 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 
80 static 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
95 void setup_python_scripting(void)
96 {
97 	register_python_scripting(&python_scripting_unsupported_ops);
98 }
99 #else
100 extern struct scripting_ops python_scripting_ops;
101 
102 void setup_python_scripting(void)
103 {
104 	register_python_scripting(&python_scripting_ops);
105 }
106 #endif
107 
108 static 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 
117 static 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 
126 static int perl_generate_script_unsupported(const char *outfile __unused)
127 {
128 	print_perl_unsupported_msg();
129 
130 	return -1;
131 }
132 
133 struct 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 
141 static 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
156 void setup_perl_scripting(void)
157 {
158 	register_perl_scripting(&perl_scripting_unsupported_ops);
159 }
160 #else
161 extern struct scripting_ops perl_scripting_ops;
162 
163 void setup_perl_scripting(void)
164 {
165 	register_perl_scripting(&perl_scripting_ops);
166 }
167 #endif
168