Function uma_zcreate

freebsd/vm/uma_core.c:3062–3105

See uma.h */

/* See uma.h */
uma_zone_t
uma_zcreate(const char *name, size_t size, uma_ctor ctor, uma_dtor dtor,
		uma_init uminit, uma_fini fini, int align, uint32_t flags)

{
	struct uma_zctor_args args;
	uma_zone_t res;

	KASSERT(powerof2(align + 1), ("invalid zone alignment %d for \"%s\"",
	    align, name));

	/* This stuff is essential for the zone ctor */
	memset(&args, 0, sizeof(args));
	args.name = name;
	args.size = size;
	args.ctor = ctor;
	args.dtor = dtor;
	args.uminit = uminit;
	args.fini = fini;
#ifdef  INVARIANTS
	/*
	 * Inject procedures which check for memory use after free if we are
	 * allowed to scramble the memory while it is not allocated.  This
	 * requires that: UMA is actually able to access the memory, no init
	 * or fini procedures, no dependency on the initial value of the
	 * memory, and no (legitimate) use of the memory after free.  Note,
	 * the ctor and dtor do not need to be empty.
	 */
	if ((!(flags & (UMA_ZONE_ZINIT | UMA_ZONE_NOTOUCH |
	    UMA_ZONE_NOFREE))) && uminit == NULL && fini == NULL) {
		args.uminit = trash_init;
		args.fini = trash_fini;
	}
#endif
	args.align = align;
	args.flags = flags;
	args.keg = NULL;

	sx_slock(&uma_reclaim_lock);
	res = zone_alloc_item(zones, &args, UMA_ANYDOMAIN, M_WAITOK);
	sx_sunlock(&uma_reclaim_lock);

	return (res);
}

/* See uma.h */
uma_zone_t