source: trunk/packages/xen-3.1/xen-3.1/extras/mini-os/include/xmalloc.h @ 34

#ifndef __XMALLOC_H__
#define __XMALLOC_H__

/* Allocate space for typed object. */
#define xmalloc(_type) ((_type *)_xmalloc(sizeof(_type), __alignof__(_type)))

/* Allocate space for array of typed objects. */
#define xmalloc_array(_type, _num) ((_type *)_xmalloc_array(sizeof(_type), __alignof__(_type), _num))

#define malloc(size) _xmalloc(size, 4)
#define free(ptr) xfree(ptr)

/* Free any of the above. */
extern void xfree(const void *);

/* Underlying functions */
extern void *_xmalloc(size_t size, size_t align);
static inline void *_xmalloc_array(size_t size, size_t align, size_t num)
{
        /* Check for overflow. */
        if (size && num > UINT_MAX / size)
                return NULL;
        return _xmalloc(size * num, align);
}

#endif /* __XMALLOC_H__ */