exit.c File Reference

#include <stdint.h>
#include <stdlib.h>
#include <syscall.h>

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Data Structures
struct	atexit_cb

Functions
int	atexit (void(*function)(void))
void	exit (int status)

Variables
static uint64_t	_atexit_count = 0
static struct atexit_cb	_atexits [32]
static struct atexit_cb *	_atexit_last = NULL

Function Documentation

atexit()

int atexit

(

void(*)(void)

function

)

Definition at line 17 of file exit.c.

{
    if (_atexit_count < 32) {
        struct atexit_cb *prev = _atexit_last;
 
        _atexits[_atexit_count].cb = function;
        _atexits[_atexit_count].next = prev;
 
        _atexit_last = &_atexits[_atexit_count];
        _atexit_count++;
    } else {
        // XXX: Support malloc
        return -1;
    }
 
    return 0;
}

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exit()

void exit

(

int

status

)

Definition at line 36 of file exit.c.

{
    while (_atexit_last != NULL) {
        (_atexit_last->cb)();
        _atexit_last = _atexit_last->next;
    }
 
    OSExit(status & 0x00ff);
 
    __builtin_unreachable();
}

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Variable Documentation

_atexit_count

uint64_t _atexit_count = 0

static

Definition at line 12 of file exit.c.

_atexit_last

struct atexit_cb* _atexit_last = NULL

static

Definition at line 14 of file exit.c.

_atexits

struct atexit_cb _atexits[32]

static

Definition at line 13 of file exit.c.