LXR linux/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
  31struct scripting_context *scripting_context;
  32
  33static int stop_script_unsupported(void)
  34{
  35        return 0;
  36}
  37
  38static 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 thread *thread __maybe_unused,
  43                                          struct addr_location *al __maybe_unused)
  44{
  45}
  46
  47static 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
  56static int python_start_script_unsupported(const char *script __maybe_unused,
  57                                           int argc __maybe_unused,
  58                                           const char **argv __maybe_unused)
  59{
  60        print_python_unsupported_msg();
  61
  62        return -1;
  63}
  64
  65static int python_generate_script_unsupported(struct pevent *pevent
  66                                              __maybe_unused,
  67                                              const char *outfile
  68                                              __maybe_unused)
  69{
  70        print_python_unsupported_msg();
  71
  72        return -1;
  73}
  74
  75struct scripting_ops python_scripting_unsupported_ops = {
  76        .name = "Python",
  77        .start_script = python_start_script_unsupported,
  78        .stop_script = stop_script_unsupported,
  79        .process_event = process_event_unsupported,
  80        .generate_script = python_generate_script_unsupported,
  81};
  82
  83static void register_python_scripting(struct scripting_ops *scripting_ops)
  84{
  85        int err;
  86        err = script_spec_register("Python", scripting_ops);
  87        if (err)
  88                die("error registering Python script extension");
  89
  90        err = script_spec_register("py", scripting_ops);
  91        if (err)
  92                die("error registering py script extension");
  93
  94        scripting_context = malloc(sizeof(struct scripting_context));
  95}
  96
  97#ifdef NO_LIBPYTHON
  98void setup_python_scripting(void)
  99{
 100        register_python_scripting(&python_scripting_unsupported_ops);
 101}
 102#else
 103extern struct scripting_ops python_scripting_ops;
 104
 105void setup_python_scripting(void)
 106{
 107        register_python_scripting(&python_scripting_ops);
 108}
 109#endif
 110
 111static void print_perl_unsupported_msg(void)
 112{
 113        fprintf(stderr, "Perl scripting not supported."
 114                "  Install libperl and rebuild perf to enable it.\n"
 115                "For example:\n  # apt-get install libperl-dev (ubuntu)"
 116                "\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
 117                "\n  etc.\n");
 118}
 119
 120static int perl_start_script_unsupported(const char *script __maybe_unused,
 121                                         int argc __maybe_unused,
 122                                         const char **argv __maybe_unused)
 123{
 124        print_perl_unsupported_msg();
 125
 126        return -1;
 127}
 128
 129static int perl_generate_script_unsupported(struct pevent *pevent
 130                                            __maybe_unused,
 131                                            const char *outfile __maybe_unused)
 132{
 133        print_perl_unsupported_msg();
 134
 135        return -1;
 136}
 137
 138struct scripting_ops perl_scripting_unsupported_ops = {
 139        .name = "Perl",
 140        .start_script = perl_start_script_unsupported,
 141        .stop_script = stop_script_unsupported,
 142        .process_event = process_event_unsupported,
 143        .generate_script = perl_generate_script_unsupported,
 144};
 145
 146static void register_perl_scripting(struct scripting_ops *scripting_ops)
 147{
 148        int err;
 149        err = script_spec_register("Perl", scripting_ops);
 150        if (err)
 151                die("error registering Perl script extension");
 152
 153        err = script_spec_register("pl", scripting_ops);
 154        if (err)
 155                die("error registering pl script extension");
 156
 157        scripting_context = malloc(sizeof(struct scripting_context));
 158}
 159
 160#ifdef NO_LIBPERL
 161void setup_perl_scripting(void)
 162{
 163        register_perl_scripting(&perl_scripting_unsupported_ops);
 164}
 165#else
 166extern struct scripting_ops perl_scripting_ops;
 167
 168void setup_perl_scripting(void)
 169{
 170        register_perl_scripting(&perl_scripting_ops);
 171}
 172#endif
 173