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 <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 __maybe_unused,
  39                                       struct perf_sample *sample __maybe_unused,
  40                                       struct perf_evsel *evsel __maybe_unused,
  41                                       struct machine *machine __maybe_unused,
  42                                       struct thread *thread __maybe_unused,
  43                                           struct addr_location *al __maybe_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 __maybe_unused,
  57                                            int argc __maybe_unused,
  58                                            const char **argv __maybe_unused)
  59 {
  60         print_python_unsupported_msg();
  61
  62         return -1;
  63 }
  64
  65 static int python_generate_script_unsupported(struct pevent *pevent
  66                                               __maybe_unused,
  67                                               const char *outfile
  68                                               __maybe_unused)
  69 {
  70         print_python_unsupported_msg();
  71
  72         return -1;
  73 }
  74
  75 struct scripting_ops python_scripting_unsupported_ops = {
  76         .name = "Python",
  77         .start_script = python_start_script_unsupported,
  78         .stop_script = stop_script_unsupported,
  79         .process_event = process_event_unsupported,
  80         .generate_script = python_generate_script_unsupported,
  81 };
  82
  83 static void register_python_scripting(struct scripting_ops *scripting_ops)
  84 {
  85         int err;
  86         err = script_spec_register("Python", scripting_ops);
  87         if (err)
  88                 die("error registering Python script extension");
  89
  90         err = script_spec_register("py", scripting_ops);
  91         if (err)
  92                 die("error registering py script extension");
  93
  94         scripting_context = malloc(sizeof(struct scripting_context));
  95 }
  96
  97 #ifdef NO_LIBPYTHON
  98 void setup_python_scripting(void)
  99 {
 100         register_python_scripting(&python_scripting_unsupported_ops);
 101 }
 102 #else
 103 extern struct scripting_ops python_scripting_ops;
 104
 105 void setup_python_scripting(void)
 106 {
 107         register_python_scripting(&python_scripting_ops);
 108 }
 109 #endif
 110
 111 static void print_perl_unsupported_msg(void)
 112 {
 113         fprintf(stderr, "Perl scripting not supported."
 114                 "  Install libperl and rebuild perf to enable it.\n"
 115                 "For example:\n  # apt-get install libperl-dev (ubuntu)"
 116                 "\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
 117                 "\n  etc.\n");
 118 }
 119
 120 static int perl_start_script_unsupported(const char *script __maybe_unused,
 121                                          int argc __maybe_unused,
 122                                          const char **argv __maybe_unused)
 123 {
 124         print_perl_unsupported_msg();
 125
 126         return -1;
 127 }
 128
 129 static int perl_generate_script_unsupported(struct pevent *pevent
 130                                             __maybe_unused,
 131                                             const char *outfile __maybe_unused)
 132 {
 133         print_perl_unsupported_msg();
 134
 135         return -1;
 136 }
 137
 138 struct scripting_ops perl_scripting_unsupported_ops = {
 139         .name = "Perl",
 140         .start_script = perl_start_script_unsupported,
 141         .stop_script = stop_script_unsupported,
 142         .process_event = process_event_unsupported,
 143         .generate_script = perl_generate_script_unsupported,
 144 };
 145
 146 static void register_perl_scripting(struct scripting_ops *scripting_ops)
 147 {
 148         int err;
 149         err = script_spec_register("Perl", scripting_ops);
 150         if (err)
 151                 die("error registering Perl script extension");
 152
 153         err = script_spec_register("pl", scripting_ops);
 154         if (err)
 155                 die("error registering pl script extension");
 156
 157         scripting_context = malloc(sizeof(struct scripting_context));
 158 }
 159
 160 #ifdef NO_LIBPERL
 161 void setup_perl_scripting(void)
 162 {
 163         register_perl_scripting(&perl_scripting_unsupported_ops);
 164 }
 165 #else
 166 extern struct scripting_ops perl_scripting_ops;
 167
 168 void setup_perl_scripting(void)
 169 {
 170         register_perl_scripting(&perl_scripting_ops);
 171 }
 172 #endif