stdlib.h File Reference

#include <sys/types.h>

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Macros
#define	NULL   ((void *)0)

Functions
int	atexit (void(*function)(void))
void	exit (int status)
_Noreturn void	abort (void)
void *	calloc (size_t num, size_t sz)
void *	malloc (size_t sz)
void	free (void *buf)
int	atoi (const char *nptr)

Macro Definition Documentation

NULL

#define NULL   ((void *)0)

Definition at line 8 of file stdlib.h.

Function Documentation

abort()

_Noreturn void abort

(

void

)

Definition at line 9 of file abort.c.

{
    OSExit(-1);
 
    UNREACHABLE();
}

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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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atoi()

int atoi

(

const char *

nptr

)

Definition at line 3 of file stdlib.c.

{
    int i = 0;
    int val = 0;
 
    while (nptr[i] != '\0') {
        if (nptr[i] >= '0' && nptr[i] <= '9') {
            val = val * 10 + (int)(nptr[i] - '0');
        } else {
            return 0;
        }
        i++;
    }
 
    return val;
}

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calloc()

void * calloc	(	size_t	num,
		size_t	sz
	)

Definition at line 154 of file malloc.c.

{
    return malloc(num*sz);
}

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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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free()

void free

(

void *

buf

)

Definition at line 169 of file malloc.c.

{
    Header *hdr = (Header *)mem;
    hdr--;
 
    if (mem == NULL)
        return;
 
    assert(hdr->magic == HEAP_MAGIC);
 
    if (hdr->size > HEAP_MAX_POOLSIZE)
        free_large(hdr);
    else
        free_small(hdr);
}

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malloc()

void * malloc

(

size_t

sz

)

Definition at line 160 of file malloc.c.

{
    if (sz > HEAP_MAX_POOLSIZE)
        return malloc_large(sz);
    else
        return malloc_small(sz);
}

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