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Diffstat (limited to 'apps/plugins/lib/pluginlib_exit.h')
-rw-r--r--apps/plugins/lib/pluginlib_exit.h48
1 files changed, 25 insertions, 23 deletions
diff --git a/apps/plugins/lib/pluginlib_exit.h b/apps/plugins/lib/pluginlib_exit.h
index 8c7f0c437f..411d0751d1 100644
--- a/apps/plugins/lib/pluginlib_exit.h
+++ b/apps/plugins/lib/pluginlib_exit.h
@@ -22,31 +22,33 @@
22#ifndef __PLUGINLIB_EXIT_H__ 22#ifndef __PLUGINLIB_EXIT_H__
23#define __PLUGINLIB_EXIT_H__ 23#define __PLUGINLIB_EXIT_H__
24 24
25#include "config.h" 25/* make sure we are in sync with the real definitions, especially on
26#include <setjmp.h> 26 * hosted systems */
27#include <stdlib.h>
28#include "gcc_extensions.h"
27 29
28#define _PLUGINLIB_EXIT_INIT(atexit) switch(setjmp(__exit_env)) \ 30/* these are actually implemented in plugin_crt0.c which all plugins link */
29 { \ 31extern int atexit(void (*func)(void));
30 case 1: \ 32extern void exit(int status) NORETURN_ATTR;
31 atexit \ 33/* these don't call the exit handlers */
32 return PLUGIN_OK; \ 34extern void _exit(int status) NORETURN_ATTR;
33 case 2: \ 35/* C99 version */
34 atexit \ 36#define _Exit _exit
35 return PLUGIN_ERROR; \
36 case 0: \
37 default: \
38 break; \
39 }
40 37
41/* Either PLUGINLIB_EXIT_INIT or PLUGINLIB_EXIT_INIT_ATEXIT needs to be placed 38#ifndef EXIT_SUCCESS
42 * as the first line in plugin_start. The _ATEXIT version will call the named 39#define EXIT_SUCCESS 0
43 * no-argument function when exit() is called before exiting the plugin, to 40#define EXIT_FAILURE 1
44 * allow for cleanup. 41#endif
45 */
46#define PLUGINLIB_EXIT_INIT _PLUGINLIB_EXIT_INIT()
47#define PLUGINLIB_EXIT_INIT_ATEXIT(atexit) _PLUGINLIB_EXIT_INIT(atexit();)
48 42
49extern jmp_buf __exit_env; 43/**
50#define exit(status) longjmp(__exit_env, status != 0 ? 2 : 1) 44 * helper function to handle USB connected events coming from
45 * button_get()
46 *
47 * it will exit the plugin if usb is detected, but it will call the atexit func
48 * before actually showing the usb screen
49 *
50 * it additionally handles power off as well, with the same behavior
51 */
52extern void exit_on_usb(int button);
51 53
52#endif /* __PLUGINLIB_EXIT_H__ */ 54#endif /* __PLUGINLIB_EXIT_H__ */