Function large_ralloc_no_move

deps/jemalloc/src/large.c:218–262

}

bool
large_ralloc_no_move(tsdn_t *tsdn, extent_t *extent, size_t usize_min,
    size_t usize_max, bool zero) {
	size_t oldusize = extent_usize_get(extent);

	/* The following should have been caught by callers. */
	assert(usize_min > 0 && usize_max <= SC_LARGE_MAXCLASS);
	/* Both allocation sizes must be large to avoid a move. */
	assert(oldusize >= SC_LARGE_MINCLASS
	    && usize_max >= SC_LARGE_MINCLASS);

	if (usize_max > oldusize) {
		/* Attempt to expand the allocation in-place. */
		if (!large_ralloc_no_move_expand(tsdn, extent, usize_max,
		    zero)) {
			arena_decay_tick(tsdn, extent_arena_get(extent));
			return false;
		}
		/* Try again, this time with usize_min. */
		if (usize_min < usize_max && usize_min > oldusize &&
		    large_ralloc_no_move_expand(tsdn, extent, usize_min,
		    zero)) {
			arena_decay_tick(tsdn, extent_arena_get(extent));
			return false;
		}
	}

	/*
	 * Avoid moving the allocation if the existing extent size accommodates
	 * the new size.
	 */
	if (oldusize >= usize_min && oldusize <= usize_max) {
		arena_decay_tick(tsdn, extent_arena_get(extent));
		return false;
	}

	/* Attempt to shrink the allocation in-place. */
	if (oldusize > usize_max) {
		if (!large_ralloc_no_move_shrink(tsdn, extent, usize_max)) {
			arena_decay_tick(tsdn, extent_arena_get(extent));
			return false;
		}
	}
	return true;
}

static void *
large_ralloc_move_helper(tsdn_t *tsdn, arena_t *arena, size_t usize,