extern int zft_vmalloc_once(void *new, size_t size);
extern int zft_vcalloc_once(void *new, size_t size);
extern int zft_vmalloc_always(void *new, size_t size);
extern int zft_vmalloc_once(void *new, size_t size);
extern int zft_vcalloc_once(void *new, size_t size);
extern int zft_vmalloc_always(void *new, size_t size);