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 pevent *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 pevent *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 177