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