text: /*
   * trace-event-scripting.  Scripting engine common and initialization code.
   *
   * Copyright (C) 2009-2010 Tom Zanussi <tzanussi@gmail.com>
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <errno.h>
  
  #include "../perf.h"
  #include "debug.h"
  #include "util.h"
  #include "trace-event.h"
  
  struct scripting_context *scripting_context;
  
  static int flush_script_unsupported(void)
  {
  	return 0;
  }
  
  static int stop_script_unsupported(void)
  {
  	return 0;
  }
  
  static void process_event_unsupported(union perf_event *event __maybe_unused,
  				      struct perf_sample *sample __maybe_unused,
  				      struct perf_evsel *evsel __maybe_unused,
  				      struct addr_location *al __maybe_unused)
  {
  }
  
  static void print_python_unsupported_msg(void)
  {
  	fprintf(stderr, "Python scripting not supported."
  		"  Install libpython and rebuild perf to enable it.\n"
  		"For example:\n  # apt-get install python-dev (ubuntu)"
  		"\n  # yum install python-devel (Fedora)"
  		"\n  etc.\n");
  }
  
  static int python_start_script_unsupported(const char *script __maybe_unused,
  					   int argc __maybe_unused,
  					   const char **argv __maybe_unused)
  {
  	print_python_unsupported_msg();
  
  	return -1;
  }
  
  static int python_generate_script_unsupported(struct tep_handle *pevent
  					      __maybe_unused,
  					      const char *outfile
  					      __maybe_unused)
  {
  	print_python_unsupported_msg();
  
  	return -1;
  }
  
  struct scripting_ops python_scripting_unsupported_ops = {
  	.name = "Python",
  	.start_script = python_start_script_unsupported,
  	.flush_script = flush_script_unsupported,
  	.stop_script = stop_script_unsupported,
  	.process_event = process_event_unsupported,
  	.generate_script = python_generate_script_unsupported,
  };
  
  static void register_python_scripting(struct scripting_ops *scripting_ops)
  {
  	if (scripting_context == NULL)
  		scripting_context = malloc(sizeof(*scripting_context));
  
         if (scripting_context == NULL ||
  	   script_spec_register("Python", scripting_ops) ||
  	   script_spec_register("py", scripting_ops)) {
  		pr_err("Error registering Python script extension: disabling it\n");
  		zfree(&scripting_context);
  	}
  }
  
  #ifndef HAVE_LIBPYTHON_SUPPORT
  void setup_python_scripting(void)
  {
  	register_python_scripting(&python_scripting_unsupported_ops);
  }
  #else
  extern struct scripting_ops python_scripting_ops;
  
  void setup_python_scripting(void)
  {
  	register_python_scripting(&python_scripting_ops);
  }
  #endif
  
  static void print_perl_unsupported_msg(void)
  {
  	fprintf(stderr, "Perl scripting not supported."
  		"  Install libperl and rebuild perf to enable it.\n"
  		"For example:\n  # apt-get install libperl-dev (ubuntu)"
  		"\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
  		"\n  etc.\n");
  }
  
  static int perl_start_script_unsupported(const char *script __maybe_unused,
  					 int argc __maybe_unused,
  					 const char **argv __maybe_unused)
  {
  	print_perl_unsupported_msg();
  
  	return -1;
  }
  
  static int perl_generate_script_unsupported(struct tep_handle *pevent
  					    __maybe_unused,
  					    const char *outfile __maybe_unused)
  {
  	print_perl_unsupported_msg();
  
  	return -1;
  }
  
  struct scripting_ops perl_scripting_unsupported_ops = {
  	.name = "Perl",
  	.start_script = perl_start_script_unsupported,
  	.flush_script = flush_script_unsupported,
  	.stop_script = stop_script_unsupported,
  	.process_event = process_event_unsupported,
  	.generate_script = perl_generate_script_unsupported,
  };
  
  static void register_perl_scripting(struct scripting_ops *scripting_ops)
  {
  	if (scripting_context == NULL)
  		scripting_context = malloc(sizeof(*scripting_context));
  
         if (scripting_context == NULL ||
  	   script_spec_register("Perl", scripting_ops) ||
  	   script_spec_register("pl", scripting_ops)) {
  		pr_err("Error registering Perl script extension: disabling it\n");
  		zfree(&scripting_context);
  	}
  }
  
  #ifndef HAVE_LIBPERL_SUPPORT
  void setup_perl_scripting(void)
  {
  	register_perl_scripting(&perl_scripting_unsupported_ops);
  }
  #else
  extern struct scripting_ops perl_scripting_ops;
  
  void setup_perl_scripting(void)
  {
  	register_perl_scripting(&perl_scripting_ops);
  }
  #endif
  