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 <ctype.h>
  26 #include <errno.h>
  27
  28 #include "../perf.h"
  29 #include "util.h"
  30 #include "trace-event.h"
  31
  32 struct scripting_context *scripting_context;
  33
  34 static int stop_script_unsupported(void)
  35 {
  36         return 0;
  37 }
  38
  39 static void process_event_unsupported(union perf_event *event __unused,
  40                                       struct perf_sample *sample __unused,
  41                                       struct perf_evsel *evsel __unused,
  42                                       struct perf_session *session __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(const char *outfile __unused)
  66 {
  67         print_python_unsupported_msg();
  68
  69         return -1;
  70 }
  71
  72 struct scripting_ops python_scripting_unsupported_ops = {
  73         .name = "Python",
  74         .start_script = python_start_script_unsupported,
  75         .stop_script = stop_script_unsupported,
  76         .process_event = process_event_unsupported,
  77         .generate_script = python_generate_script_unsupported,
  78 };
  79
  80 static void register_python_scripting(struct scripting_ops *scripting_ops)
  81 {
  82         int err;
  83         err = script_spec_register("Python", scripting_ops);
  84         if (err)
  85                 die("error registering Python script extension");
  86
  87         err = script_spec_register("py", scripting_ops);
  88         if (err)
  89                 die("error registering py script extension");
  90
  91         if (scripting_context == NULL)
  92                 scripting_context = malloc(sizeof(*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(const char *outfile __unused)
 128 {
 129         print_perl_unsupported_msg();
 130
 131         return -1;
 132 }
 133
 134 struct scripting_ops perl_scripting_unsupported_ops = {
 135         .name = "Perl",
 136         .start_script = perl_start_script_unsupported,
 137         .stop_script = stop_script_unsupported,
 138         .process_event = process_event_unsupported,
 139         .generate_script = perl_generate_script_unsupported,
 140 };
 141
 142 static void register_perl_scripting(struct scripting_ops *scripting_ops)
 143 {
 144         int err;
 145         err = script_spec_register("Perl", scripting_ops);
 146         if (err)
 147                 die("error registering Perl script extension");
 148
 149         err = script_spec_register("pl", scripting_ops);
 150         if (err)
 151                 die("error registering pl script extension");
 152
 153         if (scripting_context == NULL)
 154                 scripting_context = malloc(sizeof(*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