forked from len0rd/rockbox
cae4ae2c71
It handles exit() properly, calling the handler also when the plugin returns normally (also make exit() more standard compliant while at it). It also holds PLUGIN_HEADER, so that it doesn't need to be in each plugin anymore. To work better together with callbacks passed to rb->default_event_handler_ex() introduce exit_on_usb() which will call the exit handler before showing the usb screen and exit() after it. In most cases rb->default_event_handler_ex() was passed a callback which was manually called at all other return points. This can now be done via atexit(). In future plugin_crt0.c could also handle clearing bss, initializing iram and more. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27873 a1c6a512-1295-4272-9138-f99709370657
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2009 by Maurus Cuelenaere
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __PLUGINLIB_EXIT_H__
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#define __PLUGINLIB_EXIT_H__
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/* make sure we are in sync with the real definitions, especially on
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* hosted systems */
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#include <stdlib.h>
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#include "gcc_extensions.h"
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/* these are actually implemented in plugin_crt0.c which all plugins link */
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extern int atexit(void (*func)(void));
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extern void exit(int status) NORETURN_ATTR;
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/* these don't call the exit handlers */
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extern void _exit(int status) NORETURN_ATTR;
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/* C99 version */
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#define _Exit _exit
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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#define EXIT_FAILURE 1
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#endif
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/**
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* helper function to handle USB connected events coming from
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* button_get()
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*
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* it will exit the plugin if usb is detected, but it will call the atexit func
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* before actually showing the usb screen
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*
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* it additionally handles power off as well, with the same behavior
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*/
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extern void exit_on_usb(int button);
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#endif /* __PLUGINLIB_EXIT_H__ */
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