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kolibrios/programs/develop/ktcc/libc.obj/source/stdlib/atexit.c
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Egor00fandBurer d486c6b33a libc.obj: update exit (#340)
## New functions:
+ implement `_exit`/`_Exit`.
+ implement `atexit`.
+ implement `abort`.
`abort` write `Aborted pid: %d` to debug board

## Changes:

### call `exit` after main.
Just calling `exit`

### `exit` write exit code
If exit code isn't 0 `exit` will write exit code to debug board.

### use `con_exit(0)`
use
```c
con_exit(0)
```
instead of
```c
con_exit(status);
```
[from console.obj readme](310999dcc4/programs/develop/libraries/console_coff/console_en.txt (L15)).
I think the console window shouldn't be so dependent on the exit code. It's must only always close or always stay on screen

### `exit` writing exit code to debug board
Since the exit code is not used anywhere right now, I think it's better to just show it on the debug board.

for auto rebuild `crt0.o` need #339

from #311

---------

Co-authored-by: Burer <burer@kolibrios.org>
Reviewed-on: KolibriOS/kolibrios#340
Reviewed-by: Mikhail Frolov <mixa.frolov2003@gmail.com>
Reviewed-by: Burer <burer@kolibrios.org>
Co-authored-by: Egor00f <y.yarin@inbox.ru>
Co-committed-by: Egor00f <y.yarin@inbox.ru>
2026-05-19 10:30:46 +00:00

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668 B
C

/*
* SPDX-License-Identifier: GPL-2.0-only
* Copyright (C) 2026 KolibriOS team
*/
#include <stdlib.h>
struct atexit_n {
struct atexit_n* last;
void (*func)(void);
};
static struct atexit_n* __last_atexit_node = NULL;
int atexit(void (*func)(void))
{
struct atexit_n* n = malloc(sizeof(struct atexit_n));
if (n == NULL) {
return 1;
}
n->last = __last_atexit_node;
n->func = func;
__last_atexit_node = n;
return 0;
}
void __run_atexit()
{
struct atexit_n* n = __last_atexit_node;
while (n != NULL) {
n->func();
struct atexit_n* to_free = n;
n = n->last;
free(to_free);
}
}