libui/unix/alloc.c

44 lines
737 B
C

// 7 april 2015
#include <string.h>
#include "uipriv_unix.h"
void initAlloc(void)
{
}
#define UINT8(p) ((uint8_t *) (p))
#define PVOID(p) ((void *) (p))
#define DATA(p) PVOID(UINT8(p) + sizeof (size_t))
#define BASE(p) PVOID(UINT8(p) - sizeof (size_t))
#define SIZE(p) ((size_t *) (p))
void *uiAlloc(size_t size)
{
void *out;
out = g_malloc0(sizeof (size_t) + size);
*SIZE(out) = size;
return DATA(out);
}
void *uiRealloc(void *p, size_t new)
{
void *out;
size_t *s;
if (p == NULL)
return uiAlloc(new);
p = BASE(p);
out = g_realloc(p, sizeof (size_t) + new);
s = SIZE(out);
if (new <= *s)
memset(((uint8_t *) DATA(out)) + *s, 0, new - *s);
*s = new;
return DATA(out);
}
void uiFree(void *p)
{
g_free(BASE(p));
}