/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 by Maurus Cuelenaere
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/


#include "plugin.h"
#if (CONFIG_PLATFORM & PLATFORM_NATIVE)
#include "../codecs/lib/setjmp.h"
#else
#include <setjmp.h>
#endif

PLUGIN_HEADER

/*
* EXIT_MAGIC magic, because 0 cannot be used due to setjmp()
* must be > 0
*/
#define EXIT_MAGIC 0x0CDEBABE

extern enum plugin_status plugin_start(const void*);

static jmp_buf __exit_env;
/* only 1 atexit handler for now */
static void (*atexit_handler)(void);

int atexit(void (*fn)(void))
{
if (atexit_handler)
return -1;
atexit_handler = fn;
return 0;
}

void exit(int status)
{
longjmp(__exit_env, status != 0 ? status : EXIT_MAGIC);
}

void _exit(int status)
{ /* don't call exit handler */
atexit_handler = NULL;
exit(status);
}

enum plugin_status plugin__start(const void *param)
{
int exit_ret;
enum plugin_status ret;

exit_ret = setjmp(__exit_env);
if (exit_ret == 0)
{ /* start the plugin */
ret = plugin_start(param);
}
else
{ /* plugin exit via exit() */
if (exit_ret == EXIT_MAGIC)
{ /* exit(EXIT_SUCCESS) */
ret = PLUGIN_OK;
}
else if (exit_ret < 0)
{ /* exit(EXIT_FAILURE) */
ret = PLUGIN_ERROR;
}
else
{ /* exit(PLUGIN_XXX) */
ret = (enum plugin_status)exit_ret;
}
}

if (atexit_handler != NULL)
atexit_handler();

return ret;
}

static void cleanup_wrapper(void *param)
{
(void)param;
if (atexit_handler)
atexit_handler();
}

void exit_on_usb(int button)
{
if (rb->default_event_handler_ex(button, cleanup_wrapper, NULL)
== SYS_USB_CONNECTED)
_exit(PLUGIN_USB_CONNECTED);
}