Function extent_interior_deregister

deps/jemalloc/src/extent.c:837–849

* Removes all pointers to the given extent from the global rtree indices for * its interior. This is relevant for slab extents, for which we need to do * metadata lookups at places other than the head of the extent. We deregister * on the interior, then, when an extent moves from being an active slab to an * inactive state. */

 * inactive state.
 */
static void
extent_interior_deregister(tsdn_t *tsdn, rtree_ctx_t *rtree_ctx,
    extent_t *extent) {
	size_t i;

	assert(extent_slab_get(extent));

	for (i = 1; i < (extent_size_get(extent) >> LG_PAGE) - 1; i++) {
		rtree_clear(tsdn, &extents_rtree, rtree_ctx,
		    (uintptr_t)extent_base_get(extent) + (uintptr_t)(i <<
		    LG_PAGE));
	}
}

/*
 * Removes all pointers to the given extent from the global rtree.