apps/plugins/lib/pluginlib_exit.h

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Copyright (C) 2009 by Maurus Cuelenaere
  11 *
  12 * This program is free software; you can redistribute it and/or
  13 * modify it under the terms of the GNU General Public License
  14 * as published by the Free Software Foundation; either version 2
  15 * of the License, or (at your option) any later version.
  16 *
  17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18 * KIND, either express or implied.
  19 *
  20 ****************************************************************************/
  21
  22 #ifndef __PLUGINLIB_EXIT_H__
  23 #define __PLUGINLIB_EXIT_H__
  24
  25 /* make sure we are in sync with the real definitions, especially on
  26  * hosted systems */
  27 #include <stdlib.h>
  28 #include "gcc_extensions.h"
  29
  30 /* these are actually implemented in plugin_crt0.c which all plugins link
  31  *
  32  * the cygwin/mingw shared library stub also defines atexit, so give our
  33  * implementation a prefix */
  34 #define atexit rb_atexit
  35 extern int rb_atexit(void (*func)(void));
  36 extern void exit(int status) NORETURN_ATTR;
  37 /* these don't call the exit handlers */
  38 extern void _exit(int status) NORETURN_ATTR;
  39 /* C99 version */
  40 #define _Exit _exit
  41
  42 #ifndef EXIT_SUCCESS
  43 #define EXIT_SUCCESS 0
  44 #define EXIT_FAILURE 1
  45 #endif
  46
  47 /**
  48  * helper function to handle USB connected events coming from
  49  * button_get()
  50  *
  51  * it will exit the plugin if usb is detected, but it will call the atexit func
  52  * before actually showing the usb screen
  53  *
  54  * it additionally handles power off as well, with the same behavior
  55  */
  56 extern void exit_on_usb(int button);
  57
  58 #endif /*  __PLUGINLIB_EXIT_H__ */