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