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 flush_script_unsupported(void)
  34 {
  35         return 0;
  36 }
  37
  38 static int stop_script_unsupported(void)
  39 {
  40         return 0;
  41 }
  42
  43 static void process_event_unsupported(union perf_event *event __maybe_unused,
  44                                       struct perf_sample *sample __maybe_unused,
  45                                       struct perf_evsel *evsel __maybe_unused,
  46                                       struct thread *thread __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         int err;
  91         err = script_spec_register("Python", scripting_ops);
  92         if (err)
  93                 die("error registering Python script extension");
  94
  95         err = script_spec_register("py", scripting_ops);
  96         if (err)
  97                 die("error registering py script extension");
  98
  99         scripting_context = malloc(sizeof(struct scripting_context));
 100 }
 101
 102 #ifdef NO_LIBPYTHON
 103 void setup_python_scripting(void)
 104 {
 105         register_python_scripting(&python_scripting_unsupported_ops);
 106 }
 107 #else
 108 extern struct scripting_ops python_scripting_ops;
 109
 110 void setup_python_scripting(void)
 111 {
 112         register_python_scripting(&python_scripting_ops);
 113 }
 114 #endif
 115
 116 static void print_perl_unsupported_msg(void)
 117 {
 118         fprintf(stderr, "Perl scripting not supported."
 119                 "  Install libperl and rebuild perf to enable it.\n"
 120                 "For example:\n  # apt-get install libperl-dev (ubuntu)"
 121                 "\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
 122                 "\n  etc.\n");
 123 }
 124
 125 static int perl_start_script_unsupported(const char *script __maybe_unused,
 126                                          int argc __maybe_unused,
 127                                          const char **argv __maybe_unused)
 128 {
 129         print_perl_unsupported_msg();
 130
 131         return -1;
 132 }
 133
 134 static int perl_generate_script_unsupported(struct pevent *pevent
 135                                             __maybe_unused,
 136                                             const char *outfile __maybe_unused)
 137 {
 138         print_perl_unsupported_msg();
 139
 140         return -1;
 141 }
 142
 143 struct scripting_ops perl_scripting_unsupported_ops = {
 144         .name = "Perl",
 145         .start_script = perl_start_script_unsupported,
 146         .flush_script = flush_script_unsupported,
 147         .stop_script = stop_script_unsupported,
 148         .process_event = process_event_unsupported,
 149         .generate_script = perl_generate_script_unsupported,
 150 };
 151
 152 static void register_perl_scripting(struct scripting_ops *scripting_ops)
 153 {
 154         int err;
 155         err = script_spec_register("Perl", scripting_ops);
 156         if (err)
 157                 die("error registering Perl script extension");
 158
 159         err = script_spec_register("pl", scripting_ops);
 160         if (err)
 161                 die("error registering pl script extension");
 162
 163         scripting_context = malloc(sizeof(struct scripting_context));
 164 }
 165
 166 #ifdef NO_LIBPERL
 167 void setup_perl_scripting(void)
 168 {
 169         register_perl_scripting(&perl_scripting_unsupported_ops);
 170 }
 171 #else
 172 extern struct scripting_ops perl_scripting_ops;
 173
 174 void setup_perl_scripting(void)
 175 {
 176         register_perl_scripting(&perl_scripting_ops);
 177 }
 178 #endif