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 addr_location *al __maybe_unused)
  43 {
  44 }
  45
  46 static void print_python_unsupported_msg(void)
  47 {
  48         fprintf(stderr, "Python scripting not supported."
  49                 "  Install libpython and rebuild perf to enable it.\n"
  50                 "For example:\n  # apt-get install python-dev (ubuntu)"
  51                 "\n  # yum install python-devel (Fedora)"
  52                 "\n  etc.\n");
  53 }
  54
  55 static int python_start_script_unsupported(const char *script __maybe_unused,
  56                                            int argc __maybe_unused,
  57                                            const char **argv __maybe_unused)
  58 {
  59         print_python_unsupported_msg();
  60
  61         return -1;
  62 }
  63
  64 static int python_generate_script_unsupported(struct pevent *pevent
  65                                               __maybe_unused,
  66                                               const char *outfile
  67                                               __maybe_unused)
  68 {
  69         print_python_unsupported_msg();
  70
  71         return -1;
  72 }
  73
  74 struct scripting_ops python_scripting_unsupported_ops = {
  75         .name = "Python",
  76         .start_script = python_start_script_unsupported,
  77         .stop_script = stop_script_unsupported,
  78         .process_event = process_event_unsupported,
  79         .generate_script = python_generate_script_unsupported,
  80 };
  81
  82 static void register_python_scripting(struct scripting_ops *scripting_ops)
  83 {
  84         int err;
  85         err = script_spec_register("Python", scripting_ops);
  86         if (err)
  87                 die("error registering Python script extension");
  88
  89         err = script_spec_register("py", scripting_ops);
  90         if (err)
  91                 die("error registering py script extension");
  92
  93         scripting_context = malloc(sizeof(struct scripting_context));
  94 }
  95
  96 #ifdef NO_LIBPYTHON
  97 void setup_python_scripting(void)
  98 {
  99         register_python_scripting(&python_scripting_unsupported_ops);
 100 }
 101 #else
 102 extern struct scripting_ops python_scripting_ops;
 103
 104 void setup_python_scripting(void)
 105 {
 106         register_python_scripting(&python_scripting_ops);
 107 }
 108 #endif
 109
 110 static void print_perl_unsupported_msg(void)
 111 {
 112         fprintf(stderr, "Perl scripting not supported."
 113                 "  Install libperl and rebuild perf to enable it.\n"
 114                 "For example:\n  # apt-get install libperl-dev (ubuntu)"
 115                 "\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
 116                 "\n  etc.\n");
 117 }
 118
 119 static int perl_start_script_unsupported(const char *script __maybe_unused,
 120                                          int argc __maybe_unused,
 121                                          const char **argv __maybe_unused)
 122 {
 123         print_perl_unsupported_msg();
 124
 125         return -1;
 126 }
 127
 128 static int perl_generate_script_unsupported(struct pevent *pevent
 129                                             __maybe_unused,
 130                                             const char *outfile __maybe_unused)
 131 {
 132         print_perl_unsupported_msg();
 133
 134         return -1;
 135 }
 136
 137 struct scripting_ops perl_scripting_unsupported_ops = {
 138         .name = "Perl",
 139         .start_script = perl_start_script_unsupported,
 140         .stop_script = stop_script_unsupported,
 141         .process_event = process_event_unsupported,
 142         .generate_script = perl_generate_script_unsupported,
 143 };
 144
 145 static void register_perl_scripting(struct scripting_ops *scripting_ops)
 146 {
 147         int err;
 148         err = script_spec_register("Perl", scripting_ops);
 149         if (err)
 150                 die("error registering Perl script extension");
 151
 152         err = script_spec_register("pl", scripting_ops);
 153         if (err)
 154                 die("error registering pl script extension");
 155
 156         scripting_context = malloc(sizeof(struct scripting_context));
 157 }
 158
 159 #ifdef NO_LIBPERL
 160 void setup_perl_scripting(void)
 161 {
 162         register_perl_scripting(&perl_scripting_unsupported_ops);
 163 }
 164 #else
 165 extern struct scripting_ops perl_scripting_ops;
 166
 167 void setup_perl_scripting(void)
 168 {
 169         register_perl_scripting(&perl_scripting_ops);
 170 }
 171 #endif