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-rw-r--r--memory/jemalloc/src/test/unit/rb.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/memory/jemalloc/src/test/unit/rb.c b/memory/jemalloc/src/test/unit/rb.c
new file mode 100644
index 000000000..cf3d3a783
--- /dev/null
+++ b/memory/jemalloc/src/test/unit/rb.c
@@ -0,0 +1,354 @@
+#include "test/jemalloc_test.h"
+
+#define rbtn_black_height(a_type, a_field, a_rbt, r_height) do { \
+ a_type *rbp_bh_t; \
+ for (rbp_bh_t = (a_rbt)->rbt_root, (r_height) = 0; \
+ rbp_bh_t != NULL; \
+ rbp_bh_t = rbtn_left_get(a_type, a_field, rbp_bh_t)) { \
+ if (!rbtn_red_get(a_type, a_field, rbp_bh_t)) { \
+ (r_height)++; \
+ } \
+ } \
+} while (0)
+
+typedef struct node_s node_t;
+
+struct node_s {
+#define NODE_MAGIC 0x9823af7e
+ uint32_t magic;
+ rb_node(node_t) link;
+ uint64_t key;
+};
+
+static int
+node_cmp(const node_t *a, const node_t *b) {
+ int ret;
+
+ assert_u32_eq(a->magic, NODE_MAGIC, "Bad magic");
+ assert_u32_eq(b->magic, NODE_MAGIC, "Bad magic");
+
+ ret = (a->key > b->key) - (a->key < b->key);
+ if (ret == 0) {
+ /*
+ * Duplicates are not allowed in the tree, so force an
+ * arbitrary ordering for non-identical items with equal keys.
+ */
+ ret = (((uintptr_t)a) > ((uintptr_t)b))
+ - (((uintptr_t)a) < ((uintptr_t)b));
+ }
+ return (ret);
+}
+
+typedef rb_tree(node_t) tree_t;
+rb_gen(static, tree_, tree_t, node_t, link, node_cmp);
+
+TEST_BEGIN(test_rb_empty)
+{
+ tree_t tree;
+ node_t key;
+
+ tree_new(&tree);
+
+ assert_true(tree_empty(&tree), "Tree should be empty");
+ assert_ptr_null(tree_first(&tree), "Unexpected node");
+ assert_ptr_null(tree_last(&tree), "Unexpected node");
+
+ key.key = 0;
+ key.magic = NODE_MAGIC;
+ assert_ptr_null(tree_search(&tree, &key), "Unexpected node");
+
+ key.key = 0;
+ key.magic = NODE_MAGIC;
+ assert_ptr_null(tree_nsearch(&tree, &key), "Unexpected node");
+
+ key.key = 0;
+ key.magic = NODE_MAGIC;
+ assert_ptr_null(tree_psearch(&tree, &key), "Unexpected node");
+}
+TEST_END
+
+static unsigned
+tree_recurse(node_t *node, unsigned black_height, unsigned black_depth)
+{
+ unsigned ret = 0;
+ node_t *left_node;
+ node_t *right_node;
+
+ if (node == NULL)
+ return (ret);
+
+ left_node = rbtn_left_get(node_t, link, node);
+ right_node = rbtn_right_get(node_t, link, node);
+
+ if (!rbtn_red_get(node_t, link, node))
+ black_depth++;
+
+ /* Red nodes must be interleaved with black nodes. */
+ if (rbtn_red_get(node_t, link, node)) {
+ if (left_node != NULL)
+ assert_false(rbtn_red_get(node_t, link, left_node),
+ "Node should be black");
+ if (right_node != NULL)
+ assert_false(rbtn_red_get(node_t, link, right_node),
+ "Node should be black");
+ }
+
+ /* Self. */
+ assert_u32_eq(node->magic, NODE_MAGIC, "Bad magic");
+
+ /* Left subtree. */
+ if (left_node != NULL)
+ ret += tree_recurse(left_node, black_height, black_depth);
+ else
+ ret += (black_depth != black_height);
+
+ /* Right subtree. */
+ if (right_node != NULL)
+ ret += tree_recurse(right_node, black_height, black_depth);
+ else
+ ret += (black_depth != black_height);
+
+ return (ret);
+}
+
+static node_t *
+tree_iterate_cb(tree_t *tree, node_t *node, void *data)
+{
+ unsigned *i = (unsigned *)data;
+ node_t *search_node;
+
+ assert_u32_eq(node->magic, NODE_MAGIC, "Bad magic");
+
+ /* Test rb_search(). */
+ search_node = tree_search(tree, node);
+ assert_ptr_eq(search_node, node,
+ "tree_search() returned unexpected node");
+
+ /* Test rb_nsearch(). */
+ search_node = tree_nsearch(tree, node);
+ assert_ptr_eq(search_node, node,
+ "tree_nsearch() returned unexpected node");
+
+ /* Test rb_psearch(). */
+ search_node = tree_psearch(tree, node);
+ assert_ptr_eq(search_node, node,
+ "tree_psearch() returned unexpected node");
+
+ (*i)++;
+
+ return (NULL);
+}
+
+static unsigned
+tree_iterate(tree_t *tree)
+{
+ unsigned i;
+
+ i = 0;
+ tree_iter(tree, NULL, tree_iterate_cb, (void *)&i);
+
+ return (i);
+}
+
+static unsigned
+tree_iterate_reverse(tree_t *tree)
+{
+ unsigned i;
+
+ i = 0;
+ tree_reverse_iter(tree, NULL, tree_iterate_cb, (void *)&i);
+
+ return (i);
+}
+
+static void
+node_remove(tree_t *tree, node_t *node, unsigned nnodes)
+{
+ node_t *search_node;
+ unsigned black_height, imbalances;
+
+ tree_remove(tree, node);
+
+ /* Test rb_nsearch(). */
+ search_node = tree_nsearch(tree, node);
+ if (search_node != NULL) {
+ assert_u64_ge(search_node->key, node->key,
+ "Key ordering error");
+ }
+
+ /* Test rb_psearch(). */
+ search_node = tree_psearch(tree, node);
+ if (search_node != NULL) {
+ assert_u64_le(search_node->key, node->key,
+ "Key ordering error");
+ }
+
+ node->magic = 0;
+
+ rbtn_black_height(node_t, link, tree, black_height);
+ imbalances = tree_recurse(tree->rbt_root, black_height, 0);
+ assert_u_eq(imbalances, 0, "Tree is unbalanced");
+ assert_u_eq(tree_iterate(tree), nnodes-1,
+ "Unexpected node iteration count");
+ assert_u_eq(tree_iterate_reverse(tree), nnodes-1,
+ "Unexpected node iteration count");
+}
+
+static node_t *
+remove_iterate_cb(tree_t *tree, node_t *node, void *data)
+{
+ unsigned *nnodes = (unsigned *)data;
+ node_t *ret = tree_next(tree, node);
+
+ node_remove(tree, node, *nnodes);
+
+ return (ret);
+}
+
+static node_t *
+remove_reverse_iterate_cb(tree_t *tree, node_t *node, void *data)
+{
+ unsigned *nnodes = (unsigned *)data;
+ node_t *ret = tree_prev(tree, node);
+
+ node_remove(tree, node, *nnodes);
+
+ return (ret);
+}
+
+static void
+destroy_cb(node_t *node, void *data)
+{
+ unsigned *nnodes = (unsigned *)data;
+
+ assert_u_gt(*nnodes, 0, "Destruction removed too many nodes");
+ (*nnodes)--;
+}
+
+TEST_BEGIN(test_rb_random)
+{
+#define NNODES 25
+#define NBAGS 250
+#define SEED 42
+ sfmt_t *sfmt;
+ uint64_t bag[NNODES];
+ tree_t tree;
+ node_t nodes[NNODES];
+ unsigned i, j, k, black_height, imbalances;
+
+ sfmt = init_gen_rand(SEED);
+ for (i = 0; i < NBAGS; i++) {
+ switch (i) {
+ case 0:
+ /* Insert in order. */
+ for (j = 0; j < NNODES; j++)
+ bag[j] = j;
+ break;
+ case 1:
+ /* Insert in reverse order. */
+ for (j = 0; j < NNODES; j++)
+ bag[j] = NNODES - j - 1;
+ break;
+ default:
+ for (j = 0; j < NNODES; j++)
+ bag[j] = gen_rand64_range(sfmt, NNODES);
+ }
+
+ for (j = 1; j <= NNODES; j++) {
+ /* Initialize tree and nodes. */
+ tree_new(&tree);
+ for (k = 0; k < j; k++) {
+ nodes[k].magic = NODE_MAGIC;
+ nodes[k].key = bag[k];
+ }
+
+ /* Insert nodes. */
+ for (k = 0; k < j; k++) {
+ tree_insert(&tree, &nodes[k]);
+
+ rbtn_black_height(node_t, link, &tree,
+ black_height);
+ imbalances = tree_recurse(tree.rbt_root,
+ black_height, 0);
+ assert_u_eq(imbalances, 0,
+ "Tree is unbalanced");
+
+ assert_u_eq(tree_iterate(&tree), k+1,
+ "Unexpected node iteration count");
+ assert_u_eq(tree_iterate_reverse(&tree), k+1,
+ "Unexpected node iteration count");
+
+ assert_false(tree_empty(&tree),
+ "Tree should not be empty");
+ assert_ptr_not_null(tree_first(&tree),
+ "Tree should not be empty");
+ assert_ptr_not_null(tree_last(&tree),
+ "Tree should not be empty");
+
+ tree_next(&tree, &nodes[k]);
+ tree_prev(&tree, &nodes[k]);
+ }
+
+ /* Remove nodes. */
+ switch (i % 5) {
+ case 0:
+ for (k = 0; k < j; k++)
+ node_remove(&tree, &nodes[k], j - k);
+ break;
+ case 1:
+ for (k = j; k > 0; k--)
+ node_remove(&tree, &nodes[k-1], k);
+ break;
+ case 2: {
+ node_t *start;
+ unsigned nnodes = j;
+
+ start = NULL;
+ do {
+ start = tree_iter(&tree, start,
+ remove_iterate_cb, (void *)&nnodes);
+ nnodes--;
+ } while (start != NULL);
+ assert_u_eq(nnodes, 0,
+ "Removal terminated early");
+ break;
+ } case 3: {
+ node_t *start;
+ unsigned nnodes = j;
+
+ start = NULL;
+ do {
+ start = tree_reverse_iter(&tree, start,
+ remove_reverse_iterate_cb,
+ (void *)&nnodes);
+ nnodes--;
+ } while (start != NULL);
+ assert_u_eq(nnodes, 0,
+ "Removal terminated early");
+ break;
+ } case 4: {
+ unsigned nnodes = j;
+ tree_destroy(&tree, destroy_cb, &nnodes);
+ assert_u_eq(nnodes, 0,
+ "Destruction terminated early");
+ break;
+ } default:
+ not_reached();
+ }
+ }
+ }
+ fini_gen_rand(sfmt);
+#undef NNODES
+#undef NBAGS
+#undef SEED
+}
+TEST_END
+
+int
+main(void)
+{
+
+ return (test(
+ test_rb_empty,
+ test_rb_random));
+}
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