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Introduce plugin_crt0.c that every plugin links.

Browse source 
It handles exit() properly, calling the handler also when the plugin returns
normally (also it makes 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 it 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@27862 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2010-08-23 16:56:49 +00:00
parent 8106c9dc64
commit abdc5935be
142 changed files with 372 additions and 341 deletions
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12
apps/plugins/euroconverter.c
View file

@ -45,7 +45,7 @@ To do:
- The Irish currency needs 6 digits after the . to have sufficient precision on big number
*/
PLUGIN_HEADER
/* Name and path of the config file*/
static const char cfg_filename[] = "euroconverter.cfg";
@ -387,10 +387,8 @@ static int euro_menu(void)
/* Call when the program end */
static void euro_exit(void *parameter)
static void euro_exit(void)
{
(void)parameter;
//Restore the old pattern (i don't find another way to do this. An idea?)
rb->lcd_unlock_pattern(heuro);
rb->lcd_unlock_pattern(hhome);
@ -411,6 +409,7 @@ enum plugin_status plugin_start(const void* parameter)
/* if you don't use the parameter, you can do like
this to avoid the compiler warning about it */
(void)parameter;
atexit(euro_exit);
/*Get the pattern handle*/
heuro=rb->lcd_get_locked_pattern();
@ -587,9 +586,7 @@ enum plugin_status plugin_start(const void* parameter)
break;
default:
if (rb->default_event_handler_ex(button, euro_exit, NULL)
== SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
exit_on_usb(button);
break;
}
/*Display*/
@ -599,7 +596,6 @@ enum plugin_status plugin_start(const void* parameter)
e=mydiv(h,currency[country]);
display(e,h,pos);
}
euro_exit(NULL);
return PLUGIN_OK;
}